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343<!--
1721caef 344 "$Id$"
896cc0e8 345
a1a2e89a 346 HTTP and IPP API header for CUPS.
896cc0e8 347
a1a2e89a 348 Copyright 2007-2011 by Apple Inc.
896cc0e8 349 Copyright 1997-2006 by Easy Software Products, all rights reserved.
350
351 These coded instructions, statements, and computer programs are the
352 property of Apple Inc. and are protected by Federal copyright
353 law. Distribution and use rights are outlined in the file "LICENSE.txt"
354 which should have been included with this file. If this file is
355 file is missing or damaged, see the license at "http://www.cups.org/".
356-->
357
abc7086c 358<h1 class='title'>HTTP and IPP APIs</h1>
359
896cc0e8 360<div class='summary'><table summary='General Information'>
361<thead>
362<tr>
363 <th>Header</th>
364 <th>cups/cups.h</th>
365</tr>
366</thead>
367<tbody>
368<tr>
369 <th>Library</th>
370 <td>-lcups</td>
371</tr>
372<tr>
373 <th>See Also</th>
374 <td>Programming: <a href='api-overview.html'>Introduction to CUPS Programming</a><br>
375 Programming: <a href='api-cups.html'>CUPS API</a><br>
376 References: <a href='spec-ipp.html'>CUPS Implementation of IPP</a></td>
377</tr>
378</tbody>
379</table></div>
380<h2 class="title">Contents</h2>
381<ul class="contents">
896cc0e8 382<li><a href="#OVERVIEW">Overview</a><ul class="subcontents">
562234e1 383 <li><a href="#CREATING_URI_STRINGS">Creating URI Strings</a></li>
384 <li><a href="#SENDING_REQUESTS_WITH_FILES">Sending Requests with Files</a></li>
385 <li><a href="#ASYNCHRONOUS_REQUEST_PROCESSING">Asynchronous Request Processing</a></li>
896cc0e8 386</ul></li>
387<li><a href="#FUNCTIONS">Functions</a><ul class="code">
562234e1 388 <li><a href="#cupsDoAuthentication" title="Authenticate a request.">cupsDoAuthentication</a></li>
389 <li><a href="#cupsDoFileRequest" title="Do an IPP request with a file.">cupsDoFileRequest</a></li>
390 <li><a href="#cupsDoIORequest" title="Do an IPP request with file descriptors.">cupsDoIORequest</a></li>
391 <li><a href="#cupsDoRequest" title="Do an IPP request.">cupsDoRequest</a></li>
392 <li><a href="#cupsEncodeOptions" title="Encode printer options into IPP attributes.">cupsEncodeOptions</a></li>
393 <li><a href="#cupsEncodeOptions2" title="Encode printer options into IPP attributes for a group.">cupsEncodeOptions2</a></li>
394 <li><a href="#cupsGetDevices" title="Get available printer devices.">cupsGetDevices</a></li>
395 <li><a href="#cupsGetFd" title="Get a file from the server.">cupsGetFd</a></li>
396 <li><a href="#cupsGetFile" title="Get a file from the server.">cupsGetFile</a></li>
397 <li><a href="#cupsGetResponse" title="Get a response to an IPP request.">cupsGetResponse</a></li>
398 <li><a href="#cupsLastError" title="Return the last IPP status code.">cupsLastError</a></li>
399 <li><a href="#cupsLastErrorString" title="Return the last IPP status-message.">cupsLastErrorString</a></li>
400 <li><a href="#cupsPutFd" title="Put a file on the server.">cupsPutFd</a></li>
401 <li><a href="#cupsPutFile" title="Put a file on the server.">cupsPutFile</a></li>
402 <li><a href="#cupsReadResponseData" title="Read additional data after the IPP response.">cupsReadResponseData</a></li>
403 <li><a href="#cupsSendRequest" title="Send an IPP request.">cupsSendRequest</a></li>
404 <li><a href="#cupsWriteRequestData" title="Write additional data after an IPP request.">cupsWriteRequestData</a></li>
405 <li><a href="#httpAddCredential" title="Allocates and adds a single credential to an array.">httpAddCredential</a></li>
406 <li><a href="#httpAddrAny" title="Check for the &quot;any&quot; address.">httpAddrAny</a></li>
407 <li><a href="#httpAddrEqual" title="Compare two addresses.">httpAddrEqual</a></li>
408 <li><a href="#httpAddrLength" title="Return the length of the address in bytes.">httpAddrLength</a></li>
409 <li><a href="#httpAddrLocalhost" title="Check for the local loopback address.">httpAddrLocalhost</a></li>
410 <li><a href="#httpAddrLookup" title="Lookup the hostname associated with the address.">httpAddrLookup</a></li>
411 <li><a href="#httpAddrString" title="Convert an address to a numeric string.">httpAddrString</a></li>
412 <li><a href="#httpAssembleURI" title="Assemble a uniform resource identifier from its
896cc0e8 413components.">httpAssembleURI</a></li>
562234e1 414 <li><a href="#httpAssembleURIf" title="Assemble a uniform resource identifier from its
896cc0e8 415components with a formatted resource.">httpAssembleURIf</a></li>
562234e1 416 <li><a href="#httpBlocking" title="Set blocking/non-blocking behavior on a connection.">httpBlocking</a></li>
417 <li><a href="#httpCheck" title="Check to see if there is a pending response from the server.">httpCheck</a></li>
418 <li><a href="#httpClearCookie" title="Clear the cookie value(s).">httpClearCookie</a></li>
419 <li><a href="#httpClearFields" title="Clear HTTP request fields.">httpClearFields</a></li>
420 <li><a href="#httpClose" title="Close an HTTP connection.">httpClose</a></li>
421 <li><a href="#httpConnect" title="Connect to a HTTP server.">httpConnect</a></li>
422 <li><a href="#httpConnectEncrypt" title="Connect to a HTTP server using encryption.">httpConnectEncrypt</a></li>
423 <li><a href="#httpCopyCredentials" title="Copy the credentials associated with an encrypted
22ac733b 424connection.">httpCopyCredentials</a></li>
562234e1 425 <li><a href="#httpDecode64" title="Base64-decode a string.">httpDecode64</a></li>
426 <li><a href="#httpDecode64_2" title="Base64-decode a string.">httpDecode64_2</a></li>
427 <li><a href="#httpDelete" title="Send a DELETE request to the server.">httpDelete</a></li>
428 <li><a href="#httpEncode64" title="Base64-encode a string.">httpEncode64</a></li>
429 <li><a href="#httpEncode64_2" title="Base64-encode a string.">httpEncode64_2</a></li>
430 <li><a href="#httpEncryption" title="Set the required encryption on the link.">httpEncryption</a></li>
431 <li><a href="#httpError" title="Get the last error on a connection.">httpError</a></li>
432 <li><a href="#httpFlush" title="Flush data from a HTTP connection.">httpFlush</a></li>
433 <li><a href="#httpFlushWrite" title="Flush data in write buffer.">httpFlushWrite</a></li>
434 <li><a href="#httpFreeCredentials" title="Free an array of credentials.">httpFreeCredentials</a></li>
435 <li><a href="#httpGet" title="Send a GET request to the server.">httpGet</a></li>
436 <li><a href="#httpGetAuthString" title="Get the current authorization string.">httpGetAuthString</a></li>
437 <li><a href="#httpGetBlocking" title="Get the blocking/non-block state of a connection.">httpGetBlocking</a></li>
438 <li><a href="#httpGetCookie" title="Get any cookie data from the response.">httpGetCookie</a></li>
439 <li><a href="#httpGetDateString" title="Get a formatted date/time string from a time value.">httpGetDateString</a></li>
440 <li><a href="#httpGetDateString2" title="Get a formatted date/time string from a time value.">httpGetDateString2</a></li>
441 <li><a href="#httpGetDateTime" title="Get a time value from a formatted date/time string.">httpGetDateTime</a></li>
442 <li><a href="#httpGetFd" title="Get the file descriptor associated with a connection.">httpGetFd</a></li>
443 <li><a href="#httpGetField" title="Get a field value from a request/response.">httpGetField</a></li>
444 <li><a href="#httpGetHostByName" title="Lookup a hostname or IPv4 address, and return
896cc0e8 445address records for the specified name.">httpGetHostByName</a></li>
562234e1 446 <li><a href="#httpGetHostname" title="Get the FQDN for the connection or local system.">httpGetHostname</a></li>
447 <li><a href="#httpGetLength" title="Get the amount of data remaining from the
896cc0e8 448content-length or transfer-encoding fields.">httpGetLength</a></li>
562234e1 449 <li><a href="#httpGetLength2" title="Get the amount of data remaining from the
896cc0e8 450content-length or transfer-encoding fields.">httpGetLength2</a></li>
562234e1 451 <li><a href="#httpGetStatus" title="Get the status of the last HTTP request.">httpGetStatus</a></li>
452 <li><a href="#httpGetSubField" title="Get a sub-field value.">httpGetSubField</a></li>
453 <li><a href="#httpGetSubField2" title="Get a sub-field value.">httpGetSubField2</a></li>
454 <li><a href="#httpGets" title="Get a line of text from a HTTP connection.">httpGets</a></li>
455 <li><a href="#httpHead" title="Send a HEAD request to the server.">httpHead</a></li>
456 <li><a href="#httpInitialize" title="Initialize the HTTP interface library and set the
896cc0e8 457default HTTP proxy (if any).">httpInitialize</a></li>
562234e1 458 <li><a href="#httpMD5" title="Compute the MD5 sum of the username:group:password.">httpMD5</a></li>
459 <li><a href="#httpMD5Final" title="Combine the MD5 sum of the username, group, and password
896cc0e8 460with the server-supplied nonce value, method, and
461request-uri.">httpMD5Final</a></li>
562234e1 462 <li><a href="#httpMD5String" title="Convert an MD5 sum to a character string.">httpMD5String</a></li>
463 <li><a href="#httpOptions" title="Send an OPTIONS request to the server.">httpOptions</a></li>
464 <li><a href="#httpPost" title="Send a POST request to the server.">httpPost</a></li>
465 <li><a href="#httpPut" title="Send a PUT request to the server.">httpPut</a></li>
466 <li><a href="#httpRead" title="Read data from a HTTP connection.">httpRead</a></li>
467 <li><a href="#httpRead2" title="Read data from a HTTP connection.">httpRead2</a></li>
468 <li><a href="#httpReconnect" title="Reconnect to a HTTP server.">httpReconnect</a></li>
469 <li><a href="#httpSeparate" title="Separate a Universal Resource Identifier into its
896cc0e8 470components.">httpSeparate</a></li>
562234e1 471 <li><a href="#httpSeparate2" title="Separate a Universal Resource Identifier into its
896cc0e8 472components.">httpSeparate2</a></li>
562234e1 473 <li><a href="#httpSeparateURI" title="Separate a Universal Resource Identifier into its
896cc0e8 474components.">httpSeparateURI</a></li>
562234e1 475 <li><a href="#httpSetAuthString" title="Set the current authorization string.">httpSetAuthString</a></li>
476 <li><a href="#httpSetCookie" title="Set the cookie value(s).">httpSetCookie</a></li>
477 <li><a href="#httpSetCredentials" title="Set the credentials associated with an encrypted
22ac733b 478connection.">httpSetCredentials</a></li>
562234e1 479 <li><a href="#httpSetExpect" title="Set the Expect: header in a request.">httpSetExpect</a></li>
480 <li><a href="#httpSetField" title="Set the value of an HTTP header.">httpSetField</a></li>
481 <li><a href="#httpSetLength" title="Set the content-length and content-encoding.">httpSetLength</a></li>
482 <li><a href="#httpStatus" title="Return a short string describing a HTTP status code.">httpStatus</a></li>
483 <li><a href="#httpTrace" title="Send an TRACE request to the server.">httpTrace</a></li>
484 <li><a href="#httpUpdate" title="Update the current HTTP state for incoming data.">httpUpdate</a></li>
485 <li><a href="#httpWait" title="Wait for data available on a connection.">httpWait</a></li>
486 <li><a href="#httpWrite" title="Write data to a HTTP connection.">httpWrite</a></li>
487 <li><a href="#httpWrite2" title="Write data to a HTTP connection.">httpWrite2</a></li>
488 <li><a href="#ippAddBoolean" title="Add a boolean attribute to an IPP message.">ippAddBoolean</a></li>
489 <li><a href="#ippAddBooleans" title="Add an array of boolean values.">ippAddBooleans</a></li>
490 <li><a href="#ippAddCollection" title="Add a collection value.">ippAddCollection</a></li>
491 <li><a href="#ippAddCollections" title="Add an array of collection values.">ippAddCollections</a></li>
492 <li><a href="#ippAddDate" title="Add a date attribute to an IPP message.">ippAddDate</a></li>
493 <li><a href="#ippAddInteger" title="Add a integer attribute to an IPP message.">ippAddInteger</a></li>
494 <li><a href="#ippAddIntegers" title="Add an array of integer values.">ippAddIntegers</a></li>
495 <li><a href="#ippAddOctetString" title="Add an octetString value to an IPP message.">ippAddOctetString</a></li>
496 <li><a href="#ippAddRange" title="Add a range of values to an IPP message.">ippAddRange</a></li>
497 <li><a href="#ippAddRanges" title="Add ranges of values to an IPP message.">ippAddRanges</a></li>
498 <li><a href="#ippAddResolution" title="Add a resolution value to an IPP message.">ippAddResolution</a></li>
499 <li><a href="#ippAddResolutions" title="Add resolution values to an IPP message.">ippAddResolutions</a></li>
500 <li><a href="#ippAddSeparator" title="Add a group separator to an IPP message.">ippAddSeparator</a></li>
501 <li><a href="#ippAddString" title="Add a language-encoded string to an IPP message.">ippAddString</a></li>
502 <li><a href="#ippAddStrings" title="Add language-encoded strings to an IPP message.">ippAddStrings</a></li>
503 <li><a href="#ippDateToTime" title="Convert from RFC 1903 Date/Time format to UNIX time
896cc0e8 504in seconds.">ippDateToTime</a></li>
562234e1 505 <li><a href="#ippDelete" title="Delete an IPP message.">ippDelete</a></li>
506 <li><a href="#ippDeleteAttribute" title="Delete a single attribute in an IPP message.">ippDeleteAttribute</a></li>
507 <li><a href="#ippErrorString" title="Return a name for the given status code.">ippErrorString</a></li>
508 <li><a href="#ippErrorValue" title="Return a status code for the given name.">ippErrorValue</a></li>
509 <li><a href="#ippFindAttribute" title="Find a named attribute in a request...">ippFindAttribute</a></li>
510 <li><a href="#ippFindNextAttribute" title="Find the next named attribute in a request...">ippFindNextAttribute</a></li>
511 <li><a href="#ippLength" title="Compute the length of an IPP message.">ippLength</a></li>
512 <li><a href="#ippNew" title="Allocate a new IPP message.">ippNew</a></li>
513 <li><a href="#ippNewRequest" title="Allocate a new IPP request message.">ippNewRequest</a></li>
514 <li><a href="#ippOpString" title="Return a name for the given operation id.">ippOpString</a></li>
515 <li><a href="#ippOpValue" title="Return an operation id for the given name.">ippOpValue</a></li>
516 <li><a href="#ippPort" title="Return the default IPP port number.">ippPort</a></li>
517 <li><a href="#ippRead" title="Read data for an IPP message from a HTTP connection.">ippRead</a></li>
518 <li><a href="#ippReadFile" title="Read data for an IPP message from a file.">ippReadFile</a></li>
519 <li><a href="#ippReadIO" title="Read data for an IPP message.">ippReadIO</a></li>
520 <li><a href="#ippSetPort" title="Set the default port number.">ippSetPort</a></li>
521 <li><a href="#ippTagString" title="Return the tag name corresponding to a tag value.">ippTagString</a></li>
522 <li><a href="#ippTagValue" title="Return the tag value corresponding to a tag name.">ippTagValue</a></li>
523 <li><a href="#ippTimeToDate" title="Convert from UNIX time to RFC 1903 format.">ippTimeToDate</a></li>
524 <li><a href="#ippWrite" title="Write data for an IPP message to a HTTP connection.">ippWrite</a></li>
525 <li><a href="#ippWriteFile" title="Write data for an IPP message to a file.">ippWriteFile</a></li>
526 <li><a href="#ippWriteIO" title="Write data for an IPP message.">ippWriteIO</a></li>
a45b55c7 527</ul></li>
896cc0e8 528<li><a href="#TYPES">Data Types</a><ul class="code">
562234e1 529 <li><a href="#gss_auth_identity_desc" title="Local functions...">gss_auth_identity_desc</a></li>
8eb1383e 530 <li><a href="#http_addr_t" title="Socket address union, which
531makes using IPv6 and other
532address types easier and
533more portable. ">http_addr_t</a></li>
896cc0e8 534 <li><a href="#http_addrlist_t" title="Socket address list, which is
535used to enumerate all of the
536addresses that are associated
537with a hostname. ">http_addrlist_t</a></li>
538 <li><a href="#http_auth_t" title="HTTP authentication types">http_auth_t</a></li>
22ac733b 539 <li><a href="#http_credential_t" title="Credential data ">http_credential_t</a></li>
896cc0e8 540 <li><a href="#http_encoding_t" title="HTTP transfer encoding values">http_encoding_t</a></li>
541 <li><a href="#http_encryption_t" title="HTTP encryption values">http_encryption_t</a></li>
f2324746 542 <li><a href="#http_field_t" title="HTTP field names">http_field_t</a></li>
8eb1383e 543 <li><a href="#http_keepalive_t" title="HTTP keep-alive values">http_keepalive_t</a></li>
544 <li><a href="#http_state_t" title="HTTP state values; states
545are server-oriented...">http_state_t</a></li>
f2324746 546 <li><a href="#http_status_t" title="HTTP status codes">http_status_t</a></li>
896cc0e8 547 <li><a href="#http_t" title="HTTP connection type">http_t</a></li>
8eb1383e 548 <li><a href="#http_uri_coding_t" title="URI en/decode flags">http_uri_coding_t</a></li>
549 <li><a href="#http_uri_status_t" title="URI separation status ">http_uri_status_t</a></li>
550 <li><a href="#http_version_t" title="HTTP version numbers">http_version_t</a></li>
896cc0e8 551 <li><a href="#ipp_attribute_t" title="Attribute">ipp_attribute_t</a></li>
fab532bb 552 <li><a href="#ipp_finish_t" title="Finishings">ipp_finish_t</a></li>
896cc0e8 553 <li><a href="#ipp_iocb_t" title="IPP IO Callback Function ">ipp_iocb_t</a></li>
fab532bb 554 <li><a href="#ipp_jstate_t" title="Job states">ipp_jstate_t</a></li>
555 <li><a href="#ipp_op_t" title="IPP operations">ipp_op_t</a></li>
556 <li><a href="#ipp_orient_t" title="Orientation values">ipp_orient_t</a></li>
557 <li><a href="#ipp_pstate_t" title="Printer states">ipp_pstate_t</a></li>
558 <li><a href="#ipp_quality_t" title="Qualities">ipp_quality_t</a></li>
896cc0e8 559 <li><a href="#ipp_request_t" title="Request Header">ipp_request_t</a></li>
fab532bb 560 <li><a href="#ipp_res_t" title="Resolution units">ipp_res_t</a></li>
561 <li><a href="#ipp_state_t" title="IPP states">ipp_state_t</a></li>
896cc0e8 562 <li><a href="#ipp_t" title="Attribute Value">ipp_t</a></li>
fab532bb 563 <li><a href="#ipp_uchar_t" title="IPP status codes">ipp_uchar_t</a></li>
564 <li><a href="#ipp_tag_t" title="Format tags for attributes">ipp_tag_t</a></li>
8eb1383e 565 <li><a href="#ipp_value_t" title="Attribute Value">ipp_value_t</a></li>
896cc0e8 566</ul></li>
567<li><a href="#STRUCTURES">Structures</a><ul class="code">
562234e1 568 <li><a href="#gss_auth_identity" title="Local functions...">gss_auth_identity</a></li>
896cc0e8 569 <li><a href="#http_addrlist_s" title="Socket address list, which is
570used to enumerate all of the
571addresses that are associated
572with a hostname. ">http_addrlist_s</a></li>
22ac733b 573 <li><a href="#http_credential_s" title="Credential data ">http_credential_s</a></li>
896cc0e8 574 <li><a href="#ipp_attribute_s" title="Attribute">ipp_attribute_s</a></li>
575 <li><a href="#ipp_s" title="IPP Request/Response/Notification">ipp_s</a></li>
576</ul></li>
577<li><a href="#UNIONS">Unions</a><ul class="code">
578 <li><a href="#ipp_request_u" title="Request Header">ipp_request_u</a></li>
8eb1383e 579 <li><a href="#ipp_value_u" title="Attribute Value">ipp_value_u</a></li>
896cc0e8 580</ul></li>
581<li><a href="#ENUMERATIONS">Constants</a><ul class="code">
582 <li><a href="#http_auth_e" title="HTTP authentication types">http_auth_e</a></li>
583 <li><a href="#http_encoding_e" title="HTTP transfer encoding values">http_encoding_e</a></li>
584 <li><a href="#http_encryption_e" title="HTTP encryption values">http_encryption_e</a></li>
585 <li><a href="#http_field_e" title="HTTP field names">http_field_e</a></li>
8eb1383e 586 <li><a href="#http_keepalive_e" title="HTTP keep-alive values">http_keepalive_e</a></li>
587 <li><a href="#http_state_e" title="HTTP state values; states
588are server-oriented...">http_state_e</a></li>
896cc0e8 589 <li><a href="#http_status_e" title="HTTP status codes">http_status_e</a></li>
8eb1383e 590 <li><a href="#http_uri_coding_e" title="URI en/decode flags">http_uri_coding_e</a></li>
591 <li><a href="#http_uri_status_e" title="URI separation status ">http_uri_status_e</a></li>
592 <li><a href="#http_version_e" title="HTTP version numbers">http_version_e</a></li>
fab532bb 593 <li><a href="#ipp_finish_e" title="Finishings">ipp_finish_e</a></li>
594 <li><a href="#ipp_jstate_e" title="Job states">ipp_jstate_e</a></li>
595 <li><a href="#ipp_op_e" title="IPP operations">ipp_op_e</a></li>
596 <li><a href="#ipp_orient_e" title="Orientation values">ipp_orient_e</a></li>
597 <li><a href="#ipp_pstate_e" title="Printer states">ipp_pstate_e</a></li>
598 <li><a href="#ipp_quality_e" title="Qualities">ipp_quality_e</a></li>
599 <li><a href="#ipp_res_e" title="Resolution units">ipp_res_e</a></li>
600 <li><a href="#ipp_state_e" title="IPP states">ipp_state_e</a></li>
601 <li><a href="#ipp_status_e" title="IPP status codes">ipp_status_e</a></li>
602 <li><a href="#ipp_tag_e" title="Format tags for attributes">ipp_tag_e</a></li>
896cc0e8 603</ul></li>
562234e1 604</ul>
896cc0e8 605<!--
1721caef 606 "$Id$"
896cc0e8 607
2637dd2e 608 HTTP and IPP API introduction for CUPS.
896cc0e8 609
2637dd2e 610 Copyright 2007-2011 by Apple Inc.
896cc0e8 611 Copyright 1997-2006 by Easy Software Products, all rights reserved.
612
613 These coded instructions, statements, and computer programs are the
614 property of Apple Inc. and are protected by Federal copyright
615 law. Distribution and use rights are outlined in the file "LICENSE.txt"
616 which should have been included with this file. If this file is
617 file is missing or damaged, see the license at "http://www.cups.org/".
618-->
619
620<h2 class='title'><a name='OVERVIEW'>Overview</a></h2>
621
622<p>The CUPS HTTP and IPP APIs provide low-level access to the HTTP and IPP
623protocols and CUPS scheduler. They are typically used by monitoring and
624administration programs to perform specific functions not supported by the
625high-level CUPS API functions.</p>
626
627<p>The HTTP APIs use an opaque structure called
628<a href='#http_t'><code>http_t</code></a> to manage connections to
629a particular HTTP or IPP server. The
630<a href='#httpConnectEncrypt'><code>httpConnectEncrypt</code></a> function is
631used to create an instance of this structure for a particular server.
632The constant <code>CUPS_HTTP_DEFAULT</code> can be used with all of the
633<code>cups</code> functions to refer to the default CUPS server - the functions
634create a per-thread <a href='#http_t'><code>http_t</code></a> as needed.</p>
635
636<p>The IPP APIs use two structures for requests (messages sent to the CUPS
637scheduler) and responses (messages sent back to your application from the
638scheduler). The <a href='#ipp_t'><code>ipp_t</code></a> structure holds a
639complete request or response and is allocated using the
640<a href='#ippNew'><code>ippNew</code></a> or
641<a href='#ippNewRequest'><code>ippNewRequest</code></a> functions and
642freed using the <a href='#ippDelete'><code>ippDelete</code></a> function.</p>
643
644<p>The second structure is called
645<a href='#ipp_attribute_t'><code>ipp_attribute_t</code></a> and holds a
646single IPP attribute which consists of a group tag (<code>group_tag</code>), a
647value type tag (<code>value_tag</code>), the attribute name (<code>name</code>),
648and 1 or more values (<code>values[]</code>). Attributes are added to an
649<a href='#ipp_t'><code>ipp_t</code></a> structure using one of the
650<code>ippAdd</code> functions. For example, use
651<a href='#ippAddString'><code>ippAddString</code></a> to add a
652"requesting-user-name" string attribute to a request:</p>
653
654<pre class='example'>
655<a href='#ipp_t'>ipp_t</a> *request = <a href='#ippNewRequest'>ippNewRequest</a>(IPP_GET_JOBS);
656
657<a href='#ippAddString'>ippAddString</a>(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
658 NULL, cupsUser());
659</pre>
660
661<p>Once you have created an IPP request, use the <code>cups</code>
662functions to send the request to and read the response from the server.
663For example, the <a href='#cupsDoRequest'><code>cupsDoRequest</code></a>
664function can be used for simple query operations that do not involve files:</p>
665
666<pre class='example'>
667#include &lt;cups/cups.h&gt;
668
669
670<a href='#ipp_t'>ipp_t</a> *<a name='get_jobs'>get_jobs</a>(void)
671{
672 <a href='#ipp_t'>ipp_t</a> *request = <a href='#ippNewRequest'>ippNewRequest</a>(IPP_GET_JOBS);
673
674 <a href='#ippAddString'>ippAddString</a>(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
675 NULL, cupsUser());
676
677 return (<a href='#cupsDoRequest'>cupsDoRequest</a>(CUPS_HTTP_DEFAULT, request, "/"));
678}
679</pre>
680
681<p>The <a href='#cupsDoRequest'><code>cupsDoRequest</code></a> function frees
682the request structure and returns an IPP response structure or NULL pointer if
683the request could not be sent to the server. Once you have a response from
684the server, you can either use the
685<a href='#ippFindAttribute'><code>ippFindAttribute</code></a> and
686<a href='#ippFindNextAttribute'><code>ippFindNextAttribute</code></a> functions
687to find specific attributes, for example:</p>
688
689<pre class='example'>
690<a href='#ipp_t'>ipp_t</a> *response;
691<a href='#ipp_attribute_t'>ipp_attribute_t</a> *attr;
692
693attr = <a href='#ippFindAttribute'>ippFindAttribute</a>(response, "printer-state", IPP_TAG_ENUM);
694</pre>
695
696<p>You can also walk the list of attributes with a simple <code>for</code> loop
697like this:</p>
698
699<pre class='example'>
700<a href='#ipp_t'>ipp_t</a> *response;
701<a href='#ipp_attribute_t'>ipp_attribute_t</a> *attr;
702
703for (attr = response->attrs; attr != NULL; attr = attr->next)
704 if (attr->name == NULL)
705 puts("--SEPARATOR--");
706 else
707 puts(attr->name);
708</pre>
709
710<p>The <code>for</code> loop approach is normally used when collecting
711attributes for multiple objects (jobs, printers, etc.) in a response. Attributes
712with <code>NULL</code> names indicate a separator between the attributes of
713each object. For example, the following code will list the jobs returned from
714our previous <a href='#get_jobs'><code>get_jobs</code></a> example code:</p>
715
716<pre class='example'>
717<a href='#ipp_t'>ipp_t</a> *response = <a href='#get_jobs'>get_jobs</a>();
718
719if (response != NULL)
720{
721 <a href='#ipp_attribute_t'>ipp_attribute_t</a> *attr;
722 int job_id = 0;
723 char *job_name = NULL;
724 char *job_originating_user_name = NULL;
725
726 puts("Job ID Owner Title");
727 puts("------ ---------------- ---------------------------------");
728
729 for (attr = response->attrs; attr != NULL; attr = attr->next)
730 {
731 /* Attributes without names are separators between jobs */
732 if (attr->name == NULL)
733 {
734 if (job_id > 0 &amp;&amp; job_name != NULL &amp;&amp; job_originating_user_name != NULL)
735 printf("%5d %-16s %s\n", job_id, job_originating_user_name, job_name);
736
737 job_id = 0;
738 job_name = NULL;
739 job_originating_user_name = NULL;
740 continue;
741 }
742 else if (!strcmp(attr->name, "job-id") &amp;&amp; attr->value_tag == IPP_TAG_INTEGER)
743 job_id = attr->values[0].integer;
744 else if (!strcmp(attr->name, "job-name") &amp;&amp; attr->value_tag == IPP_TAG_NAME)
745 job_name = attr->values[0].string.text;
746 else if (!strcmp(attr->name, "job-originating-user-name") &amp;&amp;
747 attr->value_tag == IPP_TAG_NAME)
748 job_originating_user_name = attr->values[0].string.text;
749 }
750
751 if (job_id > 0 &amp;&amp; job_name != NULL &amp;&amp; job_originating_user_name != NULL)
752 printf("%5d %-16s %s\n", job_id, job_originating_user_name, job_name);
753}
754</pre>
755
756<h3><a name='CREATING_URI_STRINGS'>Creating URI Strings</a></h3>
757
758<p>To ensure proper encoding, the
759<a href='#httpAssembleURIf'><code>httpAssembleURIf</code></a> function must be
760used to format a "printer-uri" string for all printer-based requests:</p>
761
762<pre class='example'>
763const char *name = "Foo";
764char uri[1024];
765<a href='#ipp_t'>ipp_t</a> *request;
766
767<a href='#httpAssembleURIf'>httpAssembleURIf</a>(HTTP_URI_CODING_ALL, uri, sizeof(uri), "ipp", NULL, cupsServer(),
768 ippPort(), "/printers/%s", name);
769<a href='#ippAddString'>ippAddString</a>(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
770</pre>
771
772<h3><a name='SENDING_REQUESTS_WITH_FILES'>Sending Requests with Files</a></h3>
773
774<p>The <a href='#cupsDoFileRequest'><code>cupsDoFileRequest</code></a> and
775<a href='#cupsDoIORequest'><code>cupsDoIORequest</code></a> functions are
776used for requests involving files. The
777<a href='#cupsDoFileRequest'><code>cupsDoFileRequest</code></a> function
778attaches the named file to a request and is typically used when sending a print
779file or changing a printer's PPD file:</p>
780
781<pre class='example'>
782const char *filename = "/usr/share/cups/data/testprint.ps";
783const char *name = "Foo";
784char uri[1024];
785char resource[1024];
786<a href='#ipp_t'>ipp_t</a> *request = <a href='#ippNewRequest'>ippNewRequest</a>(IPP_PRINT_JOB);
787<a href='#ipp_t'>ipp_t</a> *response;
788
789/* Use httpAssembleURIf for the printer-uri string */
790<a href='#httpAssembleURIf'>httpAssembleURIf</a>(HTTP_URI_CODING_ALL, uri, sizeof(uri), "ipp", NULL, cupsServer(),
791 ippPort(), "/printers/%s", name);
792<a href='#ippAddString'>ippAddString</a>(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
793<a href='#ippAddString'>ippAddString</a>(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
794 NULL, cupsUser());
795<a href='#ippAddString'>ippAddString</a>(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "job-name",
796 NULL, "testprint.ps");
797
798/* Use snprintf for the resource path */
799snprintf(resource, sizeof(resource), "/printers/%s", name);
800
801response = <a href='#cupsDoFileRequest'>cupsDoFileRequest</a>(CUPS_HTTP_DEFAULT, request, resource, filename);
802</pre>
803
804<p>The <a href='#cupsDoIORequest'><code>cupsDoIORequest</code></a> function
805optionally attaches a file to the request and optionally saves a file in the
806response from the server. It is used when using a pipe for the request
807attachment or when using a request that returns a file, currently only
808<code>CUPS_GET_DOCUMENT</code> and <code>CUPS_GET_PPD</code>. For example,
809the following code will download the PPD file for the sample HP LaserJet
810printer driver:</p>
811
812<pre class='example'>
813char tempfile[1024];
814int tempfd;
815<a href='#ipp_t'>ipp_t</a> *request = <a href='#ippNewRequest'>ippNewRequest</a>(CUPS_GET_PPD);
816<a href='#ipp_t'>ipp_t</a> *response;
817
818<a href='#ippAddString'>ippAddString</a>(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "ppd-name",
819 NULL, "laserjet.ppd");
820
821tempfd = cupsTempFd(tempfile, sizeof(tempfile));
822
823response = <a href='#cupsDoIORequest'>cupsDoIORequest</a>(CUPS_HTTP_DEFAULT, request, "/", -1, tempfd);
824</pre>
825
826<p>The example passes <code>-1</code> for the input file descriptor to specify
827that no file is to be attached to the request. The PPD file attached to the
828response is written to the temporary file descriptor we created using the
829<code>cupsTempFd</code> function.</p>
830
831<h3><a name='ASYNCHRONOUS_REQUEST_PROCESSING'>Asynchronous Request Processing</a></h3>
832
833<p>The <a href='#cupsSendRequest'><code>cupsSendRequest</code></a> and
834<a href='#cupsGetResponse'><code>cupsGetResponse</code></a> support
835asynchronous communications with the server. Unlike the other request
836functions, the IPP request is not automatically freed, so remember to
837free your request with the <a href='#ippDelete'><code>ippDelete</code></a>
838function.</p>
839
840<p>File data is attached to the request using the
841<a href='#cupsWriteRequestData'><code>cupsWriteRequestData</code></a>
842function, while file data returned from the server is read using the
843<a href='#cupsReadResponseData'><code>cupsReadResponseData</code></a>
844function. We can rewrite the previous <code>CUPS_GET_PPD</code> example
845to use the asynchronous functions quite easily:</p>
846
847<pre class='example'>
848char tempfile[1024];
849int tempfd;
850<a href='#ipp_t'>ipp_t</a> *request = <a href='#ippNewRequest'>ippNewRequest</a>(CUPS_GET_PPD);
851<a href='#ipp_t'>ipp_t</a> *response;
852
853<a href='#ippAddString'>ippAddString</a>(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "ppd-name",
854 NULL, "laserjet.ppd");
855
856tempfd = cupsTempFd(tempfile, sizeof(tempfile));
857
858if (<a href='#cupsSendRequest'>cupsSendRequest</a>(CUPS_HTTP_DEFAULT, request, "/") == HTTP_CONTINUE)
859{
860 response = <a href='#cupsGetResponse'>cupsGetResponse</a>(CUPS_HTTP_DEFAULT, "/");
861
862 if (response != NULL)
863 {
864 ssize_t bytes;
865 char buffer[8192];
866
867 while ((bytes = <a href='#cupsReadResponseData'>cupsReadResponseData</a>(CUPS_HTTP_DEFAULT, buffer, sizeof(buffer))) > 0)
868 write(tempfd, buffer, bytes);
869 }
870}
871
872/* Free the request! */
873<a href='#ippDelete'>ippDelete</a>(request);
874</pre>
875
876<p>The <a href='#cupsSendRequest'><code>cupsSendRequest</code></a> function
877returns the initial HTTP request status, typically either
878<code>HTTP_CONTINUE</code> or <code>HTTP_UNAUTHORIZED</code>. The latter status
879is returned when the request requires authentication of some sort. The
880<a href='#cupsDoAuthentication'><code>cupsDoAuthentication</code></a> function
881must be called when your see <code>HTTP_UNAUTHORIZED</code> and the request
882re-sent. We can add authentication support to our example code by using a
883<code>do ... while</code> loop:</p>
884
885<pre class='example'>
886char tempfile[1024];
887int tempfd;
888<a href='#ipp_t'>ipp_t</a> *request = <a href='#ippNewRequest'>ippNewRequest</a>(CUPS_GET_PPD);
889<a href='#ipp_t'>ipp_t</a> *response;
890http_status_t status;
891
892<a href='#ippAddString'>ippAddString</a>(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "ppd-name",
893 NULL, "laserjet.ppd");
894
895tempfd = cupsTempFd(tempfile, sizeof(tempfile));
896
897/* Loop for authentication */
898do
899{
f2324746 900 status = <a href='#cupsSendRequest'>cupsSendRequest</a>(CUPS_HTTP_DEFAULT, request, "/");
896cc0e8 901
902 if (status == HTTP_UNAUTHORIZED)
903 {
904 /* Try to authenticate, break out of the loop if that fails */
905 if (<a href='#cupsDoAuthentication'>cupsDoAuthentication</a>(CUPS_HTTP_DEFAULT, "POST", "/"))
906 break;
907 }
908}
909while (status != HTTP_CONTINUE &amp;&amp; status != HTTP_UNAUTHORIZED);
910
911if (status == HTTP_CONTINUE)
912{
913 response = <a href='#cupsGetResponse'>cupsGetResponse</a>(CUPS_HTTP_DEFAULT, "/");
914
915 if (response != NULL)
916 {
917 ssize_t bytes;
918 char buffer[8192];
919
920 while ((bytes = <a href='#cupsReadResponseData'>cupsReadResponseData</a>(CUPS_HTTP_DEFAULT, buffer, sizeof(buffer))) > 0)
921 write(tempfd, buffer, bytes);
922 }
923}
924
925/* Free the request! */
926<a href='#ippDelete'>ippDelete</a>(request);
927</pre>
928<h2 class="title"><a name="FUNCTIONS">Functions</a></h2>
373b3e5f 929<h3 class="function"><span class="info">&nbsp;CUPS 1.1.20/Mac OS X 10.4&nbsp;</span><a name="cupsDoAuthentication">cupsDoAuthentication</a></h3>
896cc0e8 930<p class="description">Authenticate a request.</p>
931<p class="code">
932int cupsDoAuthentication (<br>
933&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
934&nbsp;&nbsp;&nbsp;&nbsp;const char *method,<br>
935&nbsp;&nbsp;&nbsp;&nbsp;const char *resource<br>
936);</p>
937<h4 class="parameters">Parameters</h4>
938<dl>
939<dt>http</dt>
c73f649f 940<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
896cc0e8 941<dt>method</dt>
942<dd class="description">Request method (&quot;GET&quot;, &quot;POST&quot;, &quot;PUT&quot;)</dd>
943<dt>resource</dt>
944<dd class="description">Resource path</dd>
945</dl>
946<h4 class="returnvalue">Return Value</h4>
947<p class="description">0 on success, -1 on error</p>
948<h4 class="discussion">Discussion</h4>
949<p class="discussion">This function should be called in response to a <code>HTTP_UNAUTHORIZED</code>
950status, prior to resubmitting your request.
951
952</p>
953<h3 class="function"><a name="cupsDoFileRequest">cupsDoFileRequest</a></h3>
954<p class="description">Do an IPP request with a file.</p>
955<p class="code">
956<a href="#ipp_t">ipp_t</a> *cupsDoFileRequest (<br>
957&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
958&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *request,<br>
959&nbsp;&nbsp;&nbsp;&nbsp;const char *resource,<br>
960&nbsp;&nbsp;&nbsp;&nbsp;const char *filename<br>
961);</p>
962<h4 class="parameters">Parameters</h4>
963<dl>
964<dt>http</dt>
c73f649f 965<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
896cc0e8 966<dt>request</dt>
967<dd class="description">IPP request</dd>
968<dt>resource</dt>
969<dd class="description">HTTP resource for POST</dd>
970<dt>filename</dt>
c73f649f 971<dd class="description">File to send or <code>NULL</code> for none</dd>
896cc0e8 972</dl>
973<h4 class="returnvalue">Return Value</h4>
974<p class="description">Response data</p>
975<h4 class="discussion">Discussion</h4>
976<p class="discussion">This function sends the IPP request to the specified server, retrying
c73f649f 977and authenticating as necessary. The request is freed with <a href="#ippDelete"><code>ippDelete</code></a>
896cc0e8 978after receiving a valid IPP response.</p>
373b3e5f 979<h3 class="function"><span class="info">&nbsp;CUPS 1.3/Mac OS X 10.5&nbsp;</span><a name="cupsDoIORequest">cupsDoIORequest</a></h3>
896cc0e8 980<p class="description">Do an IPP request with file descriptors.</p>
981<p class="code">
982<a href="#ipp_t">ipp_t</a> *cupsDoIORequest (<br>
983&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
984&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *request,<br>
985&nbsp;&nbsp;&nbsp;&nbsp;const char *resource,<br>
986&nbsp;&nbsp;&nbsp;&nbsp;int infile,<br>
987&nbsp;&nbsp;&nbsp;&nbsp;int outfile<br>
988);</p>
989<h4 class="parameters">Parameters</h4>
990<dl>
991<dt>http</dt>
c73f649f 992<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
896cc0e8 993<dt>request</dt>
994<dd class="description">IPP request</dd>
995<dt>resource</dt>
996<dd class="description">HTTP resource for POST</dd>
997<dt>infile</dt>
998<dd class="description">File to read from or -1 for none</dd>
999<dt>outfile</dt>
1000<dd class="description">File to write to or -1 for none</dd>
1001</dl>
1002<h4 class="returnvalue">Return Value</h4>
1003<p class="description">Response data</p>
1004<h4 class="discussion">Discussion</h4>
1005<p class="discussion">This function sends the IPP request to the specified server, retrying
1006and authenticating as necessary. The request is freed with ippDelete()
1007after receiving a valid IPP response.<br>
1008<br>
1009If &quot;infile&quot; is a valid file descriptor, cupsDoIORequest() copies
1010all of the data from the file after the IPP request message.<br>
1011<br>
1012If &quot;outfile&quot; is a valid file descriptor, cupsDoIORequest() copies
1013all of the data after the IPP response message to the file.
1014
1015</p>
1016<h3 class="function"><a name="cupsDoRequest">cupsDoRequest</a></h3>
1017<p class="description">Do an IPP request.</p>
1018<p class="code">
1019<a href="#ipp_t">ipp_t</a> *cupsDoRequest (<br>
1020&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1021&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *request,<br>
1022&nbsp;&nbsp;&nbsp;&nbsp;const char *resource<br>
1023);</p>
1024<h4 class="parameters">Parameters</h4>
1025<dl>
1026<dt>http</dt>
c73f649f 1027<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
896cc0e8 1028<dt>request</dt>
1029<dd class="description">IPP request</dd>
1030<dt>resource</dt>
1031<dd class="description">HTTP resource for POST</dd>
1032</dl>
1033<h4 class="returnvalue">Return Value</h4>
1034<p class="description">Response data</p>
1035<h4 class="discussion">Discussion</h4>
1036<p class="discussion">This function sends the IPP request to the specified server, retrying
1037and authenticating as necessary. The request is freed with ippDelete()
1038after receiving a valid IPP response.</p>
1039<h3 class="function"><a name="cupsEncodeOptions">cupsEncodeOptions</a></h3>
1040<p class="description">Encode printer options into IPP attributes.</p>
1041<p class="code">
1042void cupsEncodeOptions (<br>
1043&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
1044&nbsp;&nbsp;&nbsp;&nbsp;int num_options,<br>
1045&nbsp;&nbsp;&nbsp;&nbsp;cups_option_t *options<br>
1046);</p>
1047<h4 class="parameters">Parameters</h4>
1048<dl>
1049<dt>ipp</dt>
1050<dd class="description">Request to add to</dd>
1051<dt>num_options</dt>
1052<dd class="description">Number of options</dd>
1053<dt>options</dt>
1054<dd class="description">Options</dd>
1055</dl>
1056<h4 class="discussion">Discussion</h4>
1057<p class="discussion">This function adds operation, job, and then subscription attributes,
1058in that order. Use the cupsEncodeOptions2() function to add attributes
1059for a single group.</p>
373b3e5f 1060<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="cupsEncodeOptions2">cupsEncodeOptions2</a></h3>
896cc0e8 1061<p class="description">Encode printer options into IPP attributes for a group.</p>
1062<p class="code">
1063void cupsEncodeOptions2 (<br>
1064&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
1065&nbsp;&nbsp;&nbsp;&nbsp;int num_options,<br>
1066&nbsp;&nbsp;&nbsp;&nbsp;cups_option_t *options,<br>
f2324746 1067&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group_tag<br>
896cc0e8 1068);</p>
1069<h4 class="parameters">Parameters</h4>
1070<dl>
1071<dt>ipp</dt>
1072<dd class="description">Request to add to</dd>
1073<dt>num_options</dt>
1074<dd class="description">Number of options</dd>
1075<dt>options</dt>
1076<dd class="description">Options</dd>
1077<dt>group_tag</dt>
1078<dd class="description">Group to encode</dd>
1079</dl>
1080<h4 class="discussion">Discussion</h4>
1081<p class="discussion">This function only adds attributes for a single group. Call this
1082function multiple times for each group, or use cupsEncodeOptions()
1083to add the standard groups.
1084
ed12a8ec 1085</p>
abc7086c 1086<h3 class="function"><span class="info">&nbsp;CUPS 1.4/Mac OS X 10.6&nbsp;</span><a name="cupsGetDevices">cupsGetDevices</a></h3>
ed12a8ec 1087<p class="description">Get available printer devices.</p>
1088<p class="code">
1089ipp_status_t cupsGetDevices (<br>
1090&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1091&nbsp;&nbsp;&nbsp;&nbsp;int timeout,<br>
a45b55c7 1092&nbsp;&nbsp;&nbsp;&nbsp;const char *include_schemes,<br>
ed12a8ec 1093&nbsp;&nbsp;&nbsp;&nbsp;const char *exclude_schemes,<br>
1094&nbsp;&nbsp;&nbsp;&nbsp;cups_device_cb_t callback,<br>
1095&nbsp;&nbsp;&nbsp;&nbsp;void *user_data<br>
1096);</p>
1097<h4 class="parameters">Parameters</h4>
1098<dl>
1099<dt>http</dt>
1100<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
1101<dt>timeout</dt>
1102<dd class="description">Timeout in seconds or <code>CUPS_TIMEOUT_DEFAULT</code></dd>
a45b55c7 1103<dt>include_schemes</dt>
1104<dd class="description">Comma-separated URI schemes to include or <code>CUPS_INCLUDE_ALL</code></dd>
ed12a8ec 1105<dt>exclude_schemes</dt>
1106<dd class="description">Comma-separated URI schemes to exclude or <code>CUPS_EXCLUDE_NONE</code></dd>
1107<dt>callback</dt>
1108<dd class="description">Callback function</dd>
1109<dt>user_data</dt>
1110<dd class="description">User data pointer</dd>
1111</dl>
1112<h4 class="returnvalue">Return Value</h4>
1113<p class="description">Request status - <code>IPP_OK</code> on success.</p>
1114<h4 class="discussion">Discussion</h4>
1115<p class="discussion">This function sends a CUPS-Get-Devices request and streams the discovered
1116devices to the specified callback function. The &quot;timeout&quot; parameter controls
a45b55c7 1117how long the request lasts, while the &quot;include_schemes&quot; and &quot;exclude_schemes&quot;
1118parameters provide comma-delimited lists of backends to include or omit from
1119the request respectively.
ed12a8ec 1120
1121</p>
373b3e5f 1122<h3 class="function"><span class="info">&nbsp;CUPS 1.1.20/Mac OS X 10.4&nbsp;</span><a name="cupsGetFd">cupsGetFd</a></h3>
ed12a8ec 1123<p class="description">Get a file from the server.</p>
1124<p class="code">
f2324746 1125<a href="#http_status_t">http_status_t</a> cupsGetFd (<br>
ed12a8ec 1126&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1127&nbsp;&nbsp;&nbsp;&nbsp;const char *resource,<br>
1128&nbsp;&nbsp;&nbsp;&nbsp;int fd<br>
1129);</p>
1130<h4 class="parameters">Parameters</h4>
1131<dl>
1132<dt>http</dt>
1133<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
1134<dt>resource</dt>
1135<dd class="description">Resource name</dd>
1136<dt>fd</dt>
1137<dd class="description">File descriptor</dd>
1138</dl>
1139<h4 class="returnvalue">Return Value</h4>
1140<p class="description">HTTP status</p>
1141<h4 class="discussion">Discussion</h4>
1142<p class="discussion">This function returns <code>HTTP_OK</code> when the file is successfully retrieved.
1143
1144</p>
373b3e5f 1145<h3 class="function"><span class="info">&nbsp;CUPS 1.1.20/Mac OS X 10.4&nbsp;</span><a name="cupsGetFile">cupsGetFile</a></h3>
ed12a8ec 1146<p class="description">Get a file from the server.</p>
1147<p class="code">
f2324746 1148<a href="#http_status_t">http_status_t</a> cupsGetFile (<br>
ed12a8ec 1149&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1150&nbsp;&nbsp;&nbsp;&nbsp;const char *resource,<br>
1151&nbsp;&nbsp;&nbsp;&nbsp;const char *filename<br>
1152);</p>
1153<h4 class="parameters">Parameters</h4>
1154<dl>
1155<dt>http</dt>
1156<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
1157<dt>resource</dt>
1158<dd class="description">Resource name</dd>
1159<dt>filename</dt>
1160<dd class="description">Filename</dd>
1161</dl>
1162<h4 class="returnvalue">Return Value</h4>
1163<p class="description">HTTP status</p>
1164<h4 class="discussion">Discussion</h4>
1165<p class="discussion">This function returns <code>HTTP_OK</code> when the file is successfully retrieved.
1166
896cc0e8 1167</p>
abc7086c 1168<h3 class="function"><span class="info">&nbsp;CUPS 1.4/Mac OS X 10.6&nbsp;</span><a name="cupsGetResponse">cupsGetResponse</a></h3>
896cc0e8 1169<p class="description">Get a response to an IPP request.</p>
1170<p class="code">
1171<a href="#ipp_t">ipp_t</a> *cupsGetResponse (<br>
1172&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1173&nbsp;&nbsp;&nbsp;&nbsp;const char *resource<br>
1174);</p>
1175<h4 class="parameters">Parameters</h4>
1176<dl>
1177<dt>http</dt>
c73f649f 1178<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
896cc0e8 1179<dt>resource</dt>
1180<dd class="description">HTTP resource for POST</dd>
1181</dl>
1182<h4 class="returnvalue">Return Value</h4>
c73f649f 1183<p class="description">Response or <code>NULL</code> on HTTP error</p>
896cc0e8 1184<h4 class="discussion">Discussion</h4>
1185<p class="discussion">Use this function to get the response for an IPP request sent using
1186cupsSendDocument() or cupsSendRequest(). For requests that return
1187additional data, use httpRead() after getting a successful response.
1188
ed12a8ec 1189</p>
22ac733b 1190<h3 class="function"><a name="cupsLastError">cupsLastError</a></h3>
1191<p class="description">Return the last IPP status code.</p>
1192<p class="code">
1193ipp_status_t cupsLastError (void);</p>
1194<h4 class="returnvalue">Return Value</h4>
1195<p class="description">IPP status code from last request</p>
1196<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="cupsLastErrorString">cupsLastErrorString</a></h3>
1197<p class="description">Return the last IPP status-message.</p>
1198<p class="code">
1199const char *cupsLastErrorString (void);</p>
1200<h4 class="returnvalue">Return Value</h4>
1201<p class="description">status-message text from last request</p>
373b3e5f 1202<h3 class="function"><span class="info">&nbsp;CUPS 1.1.20/Mac OS X 10.4&nbsp;</span><a name="cupsPutFd">cupsPutFd</a></h3>
ed12a8ec 1203<p class="description">Put a file on the server.</p>
1204<p class="code">
f2324746 1205<a href="#http_status_t">http_status_t</a> cupsPutFd (<br>
ed12a8ec 1206&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1207&nbsp;&nbsp;&nbsp;&nbsp;const char *resource,<br>
1208&nbsp;&nbsp;&nbsp;&nbsp;int fd<br>
1209);</p>
1210<h4 class="parameters">Parameters</h4>
1211<dl>
1212<dt>http</dt>
1213<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
1214<dt>resource</dt>
1215<dd class="description">Resource name</dd>
1216<dt>fd</dt>
1217<dd class="description">File descriptor</dd>
1218</dl>
1219<h4 class="returnvalue">Return Value</h4>
1220<p class="description">HTTP status</p>
1221<h4 class="discussion">Discussion</h4>
1222<p class="discussion">This function returns <code>HTTP_CREATED</code> when the file is stored
1223successfully.
1224
1225</p>
373b3e5f 1226<h3 class="function"><span class="info">&nbsp;CUPS 1.1.20/Mac OS X 10.4&nbsp;</span><a name="cupsPutFile">cupsPutFile</a></h3>
ed12a8ec 1227<p class="description">Put a file on the server.</p>
1228<p class="code">
f2324746 1229<a href="#http_status_t">http_status_t</a> cupsPutFile (<br>
ed12a8ec 1230&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1231&nbsp;&nbsp;&nbsp;&nbsp;const char *resource,<br>
1232&nbsp;&nbsp;&nbsp;&nbsp;const char *filename<br>
1233);</p>
1234<h4 class="parameters">Parameters</h4>
1235<dl>
1236<dt>http</dt>
1237<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
1238<dt>resource</dt>
1239<dd class="description">Resource name</dd>
1240<dt>filename</dt>
1241<dd class="description">Filename</dd>
1242</dl>
1243<h4 class="returnvalue">Return Value</h4>
1244<p class="description">HTTP status</p>
1245<h4 class="discussion">Discussion</h4>
1246<p class="discussion">This function returns <code>HTTP_CREATED</code> when the file is stored
1247successfully.
1248
896cc0e8 1249</p>
abc7086c 1250<h3 class="function"><span class="info">&nbsp;CUPS 1.4/Mac OS X 10.6&nbsp;</span><a name="cupsReadResponseData">cupsReadResponseData</a></h3>
896cc0e8 1251<p class="description">Read additional data after the IPP response.</p>
1252<p class="code">
1253ssize_t cupsReadResponseData (<br>
1254&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1255&nbsp;&nbsp;&nbsp;&nbsp;char *buffer,<br>
1256&nbsp;&nbsp;&nbsp;&nbsp;size_t length<br>
1257);</p>
1258<h4 class="parameters">Parameters</h4>
1259<dl>
1260<dt>http</dt>
c73f649f 1261<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
896cc0e8 1262<dt>buffer</dt>
1263<dd class="description">Buffer to use</dd>
1264<dt>length</dt>
1265<dd class="description">Number of bytes to read</dd>
1266</dl>
1267<h4 class="returnvalue">Return Value</h4>
1268<p class="description">Bytes read, 0 on EOF, -1 on error</p>
1269<h4 class="discussion">Discussion</h4>
1270<p class="discussion">This function is used after cupsGetResponse() to read the PPD or document
1271files for CUPS_GET_PPD and CUPS_GET_DOCUMENT requests, respectively.
1272
1273</p>
abc7086c 1274<h3 class="function"><span class="info">&nbsp;CUPS 1.4/Mac OS X 10.6&nbsp;</span><a name="cupsSendRequest">cupsSendRequest</a></h3>
896cc0e8 1275<p class="description">Send an IPP request.</p>
1276<p class="code">
f2324746 1277<a href="#http_status_t">http_status_t</a> cupsSendRequest (<br>
896cc0e8 1278&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1279&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *request,<br>
1280&nbsp;&nbsp;&nbsp;&nbsp;const char *resource,<br>
1281&nbsp;&nbsp;&nbsp;&nbsp;size_t length<br>
1282);</p>
1283<h4 class="parameters">Parameters</h4>
1284<dl>
1285<dt>http</dt>
c73f649f 1286<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
896cc0e8 1287<dt>request</dt>
1288<dd class="description">IPP request</dd>
1289<dt>resource</dt>
1290<dd class="description">Resource path</dd>
1291<dt>length</dt>
ed12a8ec 1292<dd class="description">Length of data to follow or <code>CUPS_LENGTH_VARIABLE</code></dd>
896cc0e8 1293</dl>
1294<h4 class="returnvalue">Return Value</h4>
1295<p class="description">Initial HTTP status</p>
1296<h4 class="discussion">Discussion</h4>
1297<p class="discussion">Use httpWrite() to write any additional data (document, PPD file, etc.)
1298for the request, cupsGetResponse() to get the IPP response, and httpRead()
22ac733b 1299to read any additional data following the response. Only one request can be
896cc0e8 1300sent/queued at a time.<br>
1301<br>
1302Unlike cupsDoFileRequest(), cupsDoIORequest(), and cupsDoRequest(), the
1303request is not freed.
1304
1305</p>
abc7086c 1306<h3 class="function"><span class="info">&nbsp;CUPS 1.4/Mac OS X 10.6&nbsp;</span><a name="cupsWriteRequestData">cupsWriteRequestData</a></h3>
896cc0e8 1307<p class="description">Write additional data after an IPP request.</p>
1308<p class="code">
f2324746 1309<a href="#http_status_t">http_status_t</a> cupsWriteRequestData (<br>
896cc0e8 1310&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1311&nbsp;&nbsp;&nbsp;&nbsp;const char *buffer,<br>
1312&nbsp;&nbsp;&nbsp;&nbsp;size_t length<br>
1313);</p>
1314<h4 class="parameters">Parameters</h4>
1315<dl>
1316<dt>http</dt>
c73f649f 1317<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
896cc0e8 1318<dt>buffer</dt>
1319<dd class="description">Bytes to write</dd>
1320<dt>length</dt>
1321<dd class="description">Number of bytes to write</dd>
1322</dl>
1323<h4 class="returnvalue">Return Value</h4>
c73f649f 1324<p class="description"><code>HTTP_CONTINUE</code> if OK or HTTP status on error</p>
896cc0e8 1325<h4 class="discussion">Discussion</h4>
c73f649f 1326<p class="discussion">This function is used after <a href="#cupsSendRequest"><code>cupsSendRequest</code></a> to provide a PPD and
1327after <a href="#cupsStartDocument"><code>cupsStartDocument</code></a> to provide a document file.
896cc0e8 1328
22ac733b 1329</p>
a1a2e89a 1330<h3 class="function"><span class="info">&nbsp;CUPS 1.5/Mac OS X 10.7&nbsp;</span><a name="httpAddCredential">httpAddCredential</a></h3>
22ac733b 1331<p class="description">Allocates and adds a single credential to an array.</p>
1332<p class="code">
1333int httpAddCredential (<br>
1334&nbsp;&nbsp;&nbsp;&nbsp;cups_array_t *credentials,<br>
1335&nbsp;&nbsp;&nbsp;&nbsp;const void *data,<br>
1336&nbsp;&nbsp;&nbsp;&nbsp;size_t datalen<br>
1337);</p>
1338<h4 class="parameters">Parameters</h4>
1339<dl>
1340<dt>credentials</dt>
1341<dd class="description">Credentials array</dd>
1342<dt>data</dt>
1343<dd class="description">PEM-encoded X.509 data</dd>
1344<dt>datalen</dt>
1345<dd class="description">Length of data</dd>
1346</dl>
1347<h4 class="returnvalue">Return Value</h4>
1348<p class="description">0 on success, -1 on error</p>
1349<h4 class="discussion">Discussion</h4>
1350<p class="discussion">Use <code>cupsArrayNew(NULL, NULL)</code> to create a credentials array.
1351
896cc0e8 1352</p>
373b3e5f 1353<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpAddrAny">httpAddrAny</a></h3>
896cc0e8 1354<p class="description">Check for the &quot;any&quot; address.</p>
1355<p class="code">
1356int httpAddrAny (<br>
1357&nbsp;&nbsp;&nbsp;&nbsp;const <a href="#http_addr_t">http_addr_t</a> *addr<br>
1358);</p>
1359<h4 class="parameters">Parameters</h4>
1360<dl>
1361<dt>addr</dt>
1362<dd class="description">Address to check</dd>
1363</dl>
1364<h4 class="returnvalue">Return Value</h4>
1365<p class="description">1 if &quot;any&quot;, 0 otherwise</p>
373b3e5f 1366<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpAddrEqual">httpAddrEqual</a></h3>
896cc0e8 1367<p class="description">Compare two addresses.</p>
1368<p class="code">
1369int httpAddrEqual (<br>
1370&nbsp;&nbsp;&nbsp;&nbsp;const <a href="#http_addr_t">http_addr_t</a> *addr1,<br>
1371&nbsp;&nbsp;&nbsp;&nbsp;const <a href="#http_addr_t">http_addr_t</a> *addr2<br>
1372);</p>
1373<h4 class="parameters">Parameters</h4>
1374<dl>
1375<dt>addr1</dt>
1376<dd class="description">First address</dd>
1377<dt>addr2</dt>
1378<dd class="description">Second address</dd>
1379</dl>
1380<h4 class="returnvalue">Return Value</h4>
1381<p class="description">1 if equal, 0 if not</p>
373b3e5f 1382<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpAddrLength">httpAddrLength</a></h3>
896cc0e8 1383<p class="description">Return the length of the address in bytes.</p>
1384<p class="code">
1385int httpAddrLength (<br>
1386&nbsp;&nbsp;&nbsp;&nbsp;const <a href="#http_addr_t">http_addr_t</a> *addr<br>
1387);</p>
1388<h4 class="parameters">Parameters</h4>
1389<dl>
1390<dt>addr</dt>
1391<dd class="description">Address</dd>
1392</dl>
1393<h4 class="returnvalue">Return Value</h4>
1394<p class="description">Length in bytes</p>
373b3e5f 1395<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpAddrLocalhost">httpAddrLocalhost</a></h3>
896cc0e8 1396<p class="description">Check for the local loopback address.</p>
1397<p class="code">
1398int httpAddrLocalhost (<br>
1399&nbsp;&nbsp;&nbsp;&nbsp;const <a href="#http_addr_t">http_addr_t</a> *addr<br>
1400);</p>
1401<h4 class="parameters">Parameters</h4>
1402<dl>
1403<dt>addr</dt>
1404<dd class="description">Address to check</dd>
1405</dl>
1406<h4 class="returnvalue">Return Value</h4>
1407<p class="description">1 if local host, 0 otherwise</p>
373b3e5f 1408<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpAddrLookup">httpAddrLookup</a></h3>
896cc0e8 1409<p class="description">Lookup the hostname associated with the address.</p>
1410<p class="code">
1411char *httpAddrLookup (<br>
1412&nbsp;&nbsp;&nbsp;&nbsp;const <a href="#http_addr_t">http_addr_t</a> *addr,<br>
1413&nbsp;&nbsp;&nbsp;&nbsp;char *name,<br>
1414&nbsp;&nbsp;&nbsp;&nbsp;int namelen<br>
1415);</p>
1416<h4 class="parameters">Parameters</h4>
1417<dl>
1418<dt>addr</dt>
1419<dd class="description">Address to lookup</dd>
1420<dt>name</dt>
1421<dd class="description">Host name buffer</dd>
1422<dt>namelen</dt>
1423<dd class="description">Size of name buffer</dd>
1424</dl>
1425<h4 class="returnvalue">Return Value</h4>
1426<p class="description">Host name</p>
373b3e5f 1427<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpAddrString">httpAddrString</a></h3>
896cc0e8 1428<p class="description">Convert an address to a numeric string.</p>
1429<p class="code">
1430char *httpAddrString (<br>
1431&nbsp;&nbsp;&nbsp;&nbsp;const <a href="#http_addr_t">http_addr_t</a> *addr,<br>
1432&nbsp;&nbsp;&nbsp;&nbsp;char *s,<br>
1433&nbsp;&nbsp;&nbsp;&nbsp;int slen<br>
1434);</p>
1435<h4 class="parameters">Parameters</h4>
1436<dl>
1437<dt>addr</dt>
1438<dd class="description">Address to convert</dd>
1439<dt>s</dt>
1440<dd class="description">String buffer</dd>
1441<dt>slen</dt>
1442<dd class="description">Length of string</dd>
1443</dl>
1444<h4 class="returnvalue">Return Value</h4>
1445<p class="description">Numeric address string</p>
373b3e5f 1446<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpAssembleURI">httpAssembleURI</a></h3>
896cc0e8 1447<p class="description">Assemble a uniform resource identifier from its
1448components.</p>
1449<p class="code">
f2324746 1450<a href="#http_uri_status_t">http_uri_status_t</a> httpAssembleURI (<br>
1451&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_uri_coding_t">http_uri_coding_t</a> encoding,<br>
896cc0e8 1452&nbsp;&nbsp;&nbsp;&nbsp;char *uri,<br>
1453&nbsp;&nbsp;&nbsp;&nbsp;int urilen,<br>
1454&nbsp;&nbsp;&nbsp;&nbsp;const char *scheme,<br>
1455&nbsp;&nbsp;&nbsp;&nbsp;const char *username,<br>
1456&nbsp;&nbsp;&nbsp;&nbsp;const char *host,<br>
1457&nbsp;&nbsp;&nbsp;&nbsp;int port,<br>
1458&nbsp;&nbsp;&nbsp;&nbsp;const char *resource<br>
1459);</p>
1460<h4 class="parameters">Parameters</h4>
1461<dl>
1462<dt>encoding</dt>
1463<dd class="description">Encoding flags</dd>
1464<dt>uri</dt>
1465<dd class="description">URI buffer</dd>
1466<dt>urilen</dt>
1467<dd class="description">Size of URI buffer</dd>
1468<dt>scheme</dt>
1469<dd class="description">Scheme name</dd>
1470<dt>username</dt>
1471<dd class="description">Username</dd>
1472<dt>host</dt>
1473<dd class="description">Hostname or address</dd>
1474<dt>port</dt>
1475<dd class="description">Port number</dd>
1476<dt>resource</dt>
1477<dd class="description">Resource</dd>
1478</dl>
1479<h4 class="returnvalue">Return Value</h4>
1480<p class="description">URI status</p>
1481<h4 class="discussion">Discussion</h4>
1482<p class="discussion">This function escapes reserved characters in the URI depending on the
1483value of the &quot;encoding&quot; argument. You should use this function in
1484place of traditional string functions whenever you need to create a
1485URI string.
1486
1487</p>
373b3e5f 1488<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpAssembleURIf">httpAssembleURIf</a></h3>
896cc0e8 1489<p class="description">Assemble a uniform resource identifier from its
1490components with a formatted resource.</p>
1491<p class="code">
f2324746 1492<a href="#http_uri_status_t">http_uri_status_t</a> httpAssembleURIf (<br>
1493&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_uri_coding_t">http_uri_coding_t</a> encoding,<br>
896cc0e8 1494&nbsp;&nbsp;&nbsp;&nbsp;char *uri,<br>
1495&nbsp;&nbsp;&nbsp;&nbsp;int urilen,<br>
1496&nbsp;&nbsp;&nbsp;&nbsp;const char *scheme,<br>
1497&nbsp;&nbsp;&nbsp;&nbsp;const char *username,<br>
1498&nbsp;&nbsp;&nbsp;&nbsp;const char *host,<br>
1499&nbsp;&nbsp;&nbsp;&nbsp;int port,<br>
1500&nbsp;&nbsp;&nbsp;&nbsp;const char *resourcef,<br>
1501&nbsp;&nbsp;&nbsp;&nbsp;...<br>
1502);</p>
1503<h4 class="parameters">Parameters</h4>
1504<dl>
1505<dt>encoding</dt>
1506<dd class="description">Encoding flags</dd>
1507<dt>uri</dt>
1508<dd class="description">URI buffer</dd>
1509<dt>urilen</dt>
1510<dd class="description">Size of URI buffer</dd>
1511<dt>scheme</dt>
1512<dd class="description">Scheme name</dd>
1513<dt>username</dt>
1514<dd class="description">Username</dd>
1515<dt>host</dt>
1516<dd class="description">Hostname or address</dd>
1517<dt>port</dt>
1518<dd class="description">Port number</dd>
1519<dt>resourcef</dt>
1520<dd class="description">Printf-style resource</dd>
1521<dt>...</dt>
1522<dd class="description">Additional arguments as needed</dd>
1523</dl>
1524<h4 class="returnvalue">Return Value</h4>
1525<p class="description">URI status</p>
1526<h4 class="discussion">Discussion</h4>
1527<p class="discussion">This function creates a formatted version of the resource string
1528argument &quot;resourcef&quot; and escapes reserved characters in the URI
1529depending on the value of the &quot;encoding&quot; argument. You should use
1530this function in place of traditional string functions whenever
1531you need to create a URI string.
1532
1533</p>
1534<h3 class="function"><a name="httpBlocking">httpBlocking</a></h3>
1535<p class="description">Set blocking/non-blocking behavior on a connection.</p>
1536<p class="code">
1537void httpBlocking (<br>
1538&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1539&nbsp;&nbsp;&nbsp;&nbsp;int b<br>
1540);</p>
1541<h4 class="parameters">Parameters</h4>
1542<dl>
1543<dt>http</dt>
c73f649f 1544<dd class="description">Connection to server</dd>
896cc0e8 1545<dt>b</dt>
1546<dd class="description">1 = blocking, 0 = non-blocking</dd>
1547</dl>
1548<h3 class="function"><a name="httpCheck">httpCheck</a></h3>
1549<p class="description">Check to see if there is a pending response from the server.</p>
1550<p class="code">
1551int httpCheck (<br>
1552&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1553);</p>
1554<h4 class="parameters">Parameters</h4>
1555<dl>
1556<dt>http</dt>
c73f649f 1557<dd class="description">Connection to server</dd>
896cc0e8 1558</dl>
1559<h4 class="returnvalue">Return Value</h4>
1560<p class="description">0 = no data, 1 = data available</p>
373b3e5f 1561<h3 class="function"><span class="info">&nbsp;CUPS 1.1.19/Mac OS X 10.3&nbsp;</span><a name="httpClearCookie">httpClearCookie</a></h3>
896cc0e8 1562<p class="description">Clear the cookie value(s).</p>
1563<p class="code">
1564void httpClearCookie (<br>
1565&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1566);</p>
1567<h4 class="parameters">Parameters</h4>
1568<dl>
1569<dt>http</dt>
c73f649f 1570<dd class="description">Connection to server</dd>
896cc0e8 1571</dl>
1572<h3 class="function"><a name="httpClearFields">httpClearFields</a></h3>
1573<p class="description">Clear HTTP request fields.</p>
1574<p class="code">
1575void httpClearFields (<br>
1576&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1577);</p>
1578<h4 class="parameters">Parameters</h4>
1579<dl>
1580<dt>http</dt>
c73f649f 1581<dd class="description">Connection to server</dd>
896cc0e8 1582</dl>
1583<h3 class="function"><a name="httpClose">httpClose</a></h3>
22ac733b 1584<p class="description">Close an HTTP connection.</p>
896cc0e8 1585<p class="code">
1586void httpClose (<br>
1587&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1588);</p>
1589<h4 class="parameters">Parameters</h4>
1590<dl>
1591<dt>http</dt>
c73f649f 1592<dd class="description">Connection to server</dd>
896cc0e8 1593</dl>
50bcef02 1594<h3 class="function"><span class="info">&nbsp;DEPRECATED&nbsp;</span><a name="httpConnect">httpConnect</a></h3>
896cc0e8 1595<p class="description">Connect to a HTTP server.</p>
1596<p class="code">
1597<a href="#http_t">http_t</a> *httpConnect (<br>
1598&nbsp;&nbsp;&nbsp;&nbsp;const char *host,<br>
1599&nbsp;&nbsp;&nbsp;&nbsp;int port<br>
1600);</p>
1601<h4 class="parameters">Parameters</h4>
1602<dl>
1603<dt>host</dt>
1604<dd class="description">Host to connect to</dd>
1605<dt>port</dt>
1606<dd class="description">Port number</dd>
1607</dl>
1608<h4 class="returnvalue">Return Value</h4>
1609<p class="description">New HTTP connection</p>
50bcef02 1610<h4 class="discussion">Discussion</h4>
1611<p class="discussion">This function is deprecated - use <a href="#httpConnectEncrypt"><code>httpConnectEncrypt</code></a> instead.
1612
1613</p>
896cc0e8 1614<h3 class="function"><a name="httpConnectEncrypt">httpConnectEncrypt</a></h3>
1615<p class="description">Connect to a HTTP server using encryption.</p>
1616<p class="code">
1617<a href="#http_t">http_t</a> *httpConnectEncrypt (<br>
1618&nbsp;&nbsp;&nbsp;&nbsp;const char *host,<br>
1619&nbsp;&nbsp;&nbsp;&nbsp;int port,<br>
1620&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_encryption_t">http_encryption_t</a> encryption<br>
1621);</p>
1622<h4 class="parameters">Parameters</h4>
1623<dl>
1624<dt>host</dt>
1625<dd class="description">Host to connect to</dd>
1626<dt>port</dt>
1627<dd class="description">Port number</dd>
1628<dt>encryption</dt>
1629<dd class="description">Type of encryption to use</dd>
1630</dl>
1631<h4 class="returnvalue">Return Value</h4>
1632<p class="description">New HTTP connection</p>
a1a2e89a 1633<h3 class="function"><span class="info">&nbsp;CUPS 1.5/Mac OS X 10.7&nbsp;</span><a name="httpCopyCredentials">httpCopyCredentials</a></h3>
22ac733b 1634<p class="description">Copy the credentials associated with an encrypted
1635connection.</p>
1636<p class="code">
1637int httpCopyCredentials (<br>
1638&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1639&nbsp;&nbsp;&nbsp;&nbsp;cups_array_t **credentials<br>
1640);</p>
1641<h4 class="parameters">Parameters</h4>
1642<dl>
1643<dt>http</dt>
1644<dd class="description">Connection to server</dd>
1645<dt>credentials</dt>
1646<dd class="description">Array of credentials</dd>
1647</dl>
1648<h4 class="returnvalue">Return Value</h4>
1649<p class="description">Status of call (0 = success)</p>
896cc0e8 1650<h3 class="function"><span class="info">&nbsp;DEPRECATED&nbsp;</span><a name="httpDecode64">httpDecode64</a></h3>
1651<p class="description">Base64-decode a string.</p>
1652<p class="code">
1653char *httpDecode64 (<br>
1654&nbsp;&nbsp;&nbsp;&nbsp;char *out,<br>
1655&nbsp;&nbsp;&nbsp;&nbsp;const char *in<br>
1656);</p>
1657<h4 class="parameters">Parameters</h4>
1658<dl>
1659<dt>out</dt>
1660<dd class="description">String to write to</dd>
1661<dt>in</dt>
1662<dd class="description">String to read from</dd>
1663</dl>
1664<h4 class="returnvalue">Return Value</h4>
1665<p class="description">Decoded string</p>
1666<h4 class="discussion">Discussion</h4>
1667<p class="discussion">This function is deprecated. Use the httpDecode64_2() function instead
1668which provides buffer length arguments.
1669
1670</p>
373b3e5f 1671<h3 class="function"><span class="info">&nbsp;CUPS 1.1.21/Mac OS X 10.4&nbsp;</span><a name="httpDecode64_2">httpDecode64_2</a></h3>
896cc0e8 1672<p class="description">Base64-decode a string.</p>
1673<p class="code">
1674char *httpDecode64_2 (<br>
1675&nbsp;&nbsp;&nbsp;&nbsp;char *out,<br>
1676&nbsp;&nbsp;&nbsp;&nbsp;int *outlen,<br>
1677&nbsp;&nbsp;&nbsp;&nbsp;const char *in<br>
1678);</p>
1679<h4 class="parameters">Parameters</h4>
1680<dl>
1681<dt>out</dt>
1682<dd class="description">String to write to</dd>
1683<dt>outlen</dt>
1684<dd class="description">Size of output string</dd>
1685<dt>in</dt>
1686<dd class="description">String to read from</dd>
1687</dl>
1688<h4 class="returnvalue">Return Value</h4>
1689<p class="description">Decoded string</p>
1690<h3 class="function"><a name="httpDelete">httpDelete</a></h3>
1691<p class="description">Send a DELETE request to the server.</p>
1692<p class="code">
1693int httpDelete (<br>
1694&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1695&nbsp;&nbsp;&nbsp;&nbsp;const char *uri<br>
1696);</p>
1697<h4 class="parameters">Parameters</h4>
1698<dl>
1699<dt>http</dt>
c73f649f 1700<dd class="description">Connection to server</dd>
896cc0e8 1701<dt>uri</dt>
1702<dd class="description">URI to delete</dd>
1703</dl>
1704<h4 class="returnvalue">Return Value</h4>
1705<p class="description">Status of call (0 = success)</p>
1706<h3 class="function"><span class="info">&nbsp;DEPRECATED&nbsp;</span><a name="httpEncode64">httpEncode64</a></h3>
1707<p class="description">Base64-encode a string.</p>
1708<p class="code">
1709char *httpEncode64 (<br>
1710&nbsp;&nbsp;&nbsp;&nbsp;char *out,<br>
1711&nbsp;&nbsp;&nbsp;&nbsp;const char *in<br>
1712);</p>
1713<h4 class="parameters">Parameters</h4>
1714<dl>
1715<dt>out</dt>
1716<dd class="description">String to write to</dd>
1717<dt>in</dt>
1718<dd class="description">String to read from</dd>
1719</dl>
1720<h4 class="returnvalue">Return Value</h4>
1721<p class="description">Encoded string</p>
1722<h4 class="discussion">Discussion</h4>
1723<p class="discussion">This function is deprecated. Use the httpEncode64_2() function instead
1724which provides buffer length arguments.
1725
1726</p>
373b3e5f 1727<h3 class="function"><span class="info">&nbsp;CUPS 1.1.21/Mac OS X 10.4&nbsp;</span><a name="httpEncode64_2">httpEncode64_2</a></h3>
896cc0e8 1728<p class="description">Base64-encode a string.</p>
1729<p class="code">
1730char *httpEncode64_2 (<br>
1731&nbsp;&nbsp;&nbsp;&nbsp;char *out,<br>
1732&nbsp;&nbsp;&nbsp;&nbsp;int outlen,<br>
1733&nbsp;&nbsp;&nbsp;&nbsp;const char *in,<br>
1734&nbsp;&nbsp;&nbsp;&nbsp;int inlen<br>
1735);</p>
1736<h4 class="parameters">Parameters</h4>
1737<dl>
1738<dt>out</dt>
1739<dd class="description">String to write to</dd>
1740<dt>outlen</dt>
1741<dd class="description">Size of output string</dd>
1742<dt>in</dt>
1743<dd class="description">String to read from</dd>
1744<dt>inlen</dt>
1745<dd class="description">Size of input string</dd>
1746</dl>
1747<h4 class="returnvalue">Return Value</h4>
1748<p class="description">Encoded string</p>
1749<h3 class="function"><a name="httpEncryption">httpEncryption</a></h3>
1750<p class="description">Set the required encryption on the link.</p>
1751<p class="code">
1752int httpEncryption (<br>
1753&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1754&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_encryption_t">http_encryption_t</a> e<br>
1755);</p>
1756<h4 class="parameters">Parameters</h4>
1757<dl>
1758<dt>http</dt>
c73f649f 1759<dd class="description">Connection to server</dd>
896cc0e8 1760<dt>e</dt>
1761<dd class="description">New encryption preference</dd>
1762</dl>
1763<h4 class="returnvalue">Return Value</h4>
1764<p class="description">-1 on error, 0 on success</p>
1765<h3 class="function"><a name="httpError">httpError</a></h3>
1766<p class="description">Get the last error on a connection.</p>
1767<p class="code">
1768int httpError (<br>
1769&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1770);</p>
1771<h4 class="parameters">Parameters</h4>
1772<dl>
1773<dt>http</dt>
c73f649f 1774<dd class="description">Connection to server</dd>
896cc0e8 1775</dl>
1776<h4 class="returnvalue">Return Value</h4>
1777<p class="description">Error code (errno) value</p>
1778<h3 class="function"><a name="httpFlush">httpFlush</a></h3>
1779<p class="description">Flush data from a HTTP connection.</p>
1780<p class="code">
1781void httpFlush (<br>
1782&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1783);</p>
1784<h4 class="parameters">Parameters</h4>
1785<dl>
1786<dt>http</dt>
c73f649f 1787<dd class="description">Connection to server</dd>
896cc0e8 1788</dl>
373b3e5f 1789<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpFlushWrite">httpFlushWrite</a></h3>
896cc0e8 1790<p class="description">Flush data in write buffer.</p>
1791<p class="code">
1792int httpFlushWrite (<br>
1793&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1794);</p>
1795<h4 class="parameters">Parameters</h4>
1796<dl>
1797<dt>http</dt>
c73f649f 1798<dd class="description">Connection to server</dd>
896cc0e8 1799</dl>
1800<h4 class="returnvalue">Return Value</h4>
1801<p class="description">Bytes written or -1 on error</p>
22ac733b 1802<h3 class="function"><a name="httpFreeCredentials">httpFreeCredentials</a></h3>
1803<p class="description">Free an array of credentials.</p>
1804<p class="code">
1805void httpFreeCredentials (<br>
1806&nbsp;&nbsp;&nbsp;&nbsp;cups_array_t *credentials<br>
1807);</p>
1808<h4 class="parameters">Parameters</h4>
1809<dl>
1810<dt>credentials</dt>
1811<dd class="description">Array of credentials</dd>
1812</dl>
896cc0e8 1813<h3 class="function"><a name="httpGet">httpGet</a></h3>
1814<p class="description">Send a GET request to the server.</p>
1815<p class="code">
1816int httpGet (<br>
1817&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1818&nbsp;&nbsp;&nbsp;&nbsp;const char *uri<br>
1819);</p>
1820<h4 class="parameters">Parameters</h4>
1821<dl>
1822<dt>http</dt>
c73f649f 1823<dd class="description">Connection to server</dd>
896cc0e8 1824<dt>uri</dt>
1825<dd class="description">URI to get</dd>
1826</dl>
1827<h4 class="returnvalue">Return Value</h4>
1828<p class="description">Status of call (0 = success)</p>
373b3e5f 1829<h3 class="function"><span class="info">&nbsp;CUPS 1.3/Mac OS X 10.5&nbsp;</span><a name="httpGetAuthString">httpGetAuthString</a></h3>
896cc0e8 1830<p class="description">Get the current authorization string.</p>
1831<p class="code">
1832char *httpGetAuthString (<br>
1833&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1834);</p>
1835<h4 class="parameters">Parameters</h4>
1836<dl>
1837<dt>http</dt>
c73f649f 1838<dd class="description">Connection to server</dd>
896cc0e8 1839</dl>
1840<h4 class="returnvalue">Return Value</h4>
1841<p class="description">Authorization string</p>
1842<h4 class="discussion">Discussion</h4>
1843<p class="discussion">The authorization string is set by cupsDoAuthentication() and
1844httpSetAuthString(). Use httpGetAuthString() to retrieve the
1845string to use with httpSetField() for the HTTP_FIELD_AUTHORIZATION
1846value.
1847
1848</p>
373b3e5f 1849<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpGetBlocking">httpGetBlocking</a></h3>
896cc0e8 1850<p class="description">Get the blocking/non-block state of a connection.</p>
1851<p class="code">
1852int httpGetBlocking (<br>
1853&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1854);</p>
1855<h4 class="parameters">Parameters</h4>
1856<dl>
1857<dt>http</dt>
c73f649f 1858<dd class="description">Connection to server</dd>
896cc0e8 1859</dl>
1860<h4 class="returnvalue">Return Value</h4>
1861<p class="description">1 if blocking, 0 if non-blocking</p>
373b3e5f 1862<h3 class="function"><span class="info">&nbsp;CUPS 1.1.19/Mac OS X 10.3&nbsp;</span><a name="httpGetCookie">httpGetCookie</a></h3>
896cc0e8 1863<p class="description">Get any cookie data from the response.</p>
1864<p class="code">
1865const char *httpGetCookie (<br>
1866&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1867);</p>
1868<h4 class="parameters">Parameters</h4>
1869<dl>
1870<dt>http</dt>
1871<dd class="description">HTTP connecion</dd>
1872</dl>
1873<h4 class="returnvalue">Return Value</h4>
1874<p class="description">Cookie data or NULL</p>
1875<h3 class="function"><span class="info">&nbsp;DEPRECATED&nbsp;</span><a name="httpGetDateString">httpGetDateString</a></h3>
1876<p class="description">Get a formatted date/time string from a time value.</p>
1877<p class="code">
1878const char *httpGetDateString (<br>
1879&nbsp;&nbsp;&nbsp;&nbsp;time_t t<br>
1880);</p>
1881<h4 class="parameters">Parameters</h4>
1882<dl>
1883<dt>t</dt>
1884<dd class="description">UNIX time</dd>
1885</dl>
1886<h4 class="returnvalue">Return Value</h4>
1887<p class="description">Date/time string</p>
373b3e5f 1888<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpGetDateString2">httpGetDateString2</a></h3>
896cc0e8 1889<p class="description">Get a formatted date/time string from a time value.</p>
1890<p class="code">
1891const char *httpGetDateString2 (<br>
1892&nbsp;&nbsp;&nbsp;&nbsp;time_t t,<br>
1893&nbsp;&nbsp;&nbsp;&nbsp;char *s,<br>
1894&nbsp;&nbsp;&nbsp;&nbsp;int slen<br>
1895);</p>
1896<h4 class="parameters">Parameters</h4>
1897<dl>
1898<dt>t</dt>
1899<dd class="description">UNIX time</dd>
1900<dt>s</dt>
1901<dd class="description">String buffer</dd>
1902<dt>slen</dt>
1903<dd class="description">Size of string buffer</dd>
1904</dl>
1905<h4 class="returnvalue">Return Value</h4>
1906<p class="description">Date/time string</p>
1907<h3 class="function"><a name="httpGetDateTime">httpGetDateTime</a></h3>
1908<p class="description">Get a time value from a formatted date/time string.</p>
1909<p class="code">
1910time_t httpGetDateTime (<br>
1911&nbsp;&nbsp;&nbsp;&nbsp;const char *s<br>
1912);</p>
1913<h4 class="parameters">Parameters</h4>
1914<dl>
1915<dt>s</dt>
1916<dd class="description">Date/time string</dd>
1917</dl>
1918<h4 class="returnvalue">Return Value</h4>
1919<p class="description">UNIX time</p>
373b3e5f 1920<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpGetFd">httpGetFd</a></h3>
896cc0e8 1921<p class="description">Get the file descriptor associated with a connection.</p>
1922<p class="code">
1923int httpGetFd (<br>
1924&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1925);</p>
1926<h4 class="parameters">Parameters</h4>
1927<dl>
1928<dt>http</dt>
c73f649f 1929<dd class="description">Connection to server</dd>
896cc0e8 1930</dl>
1931<h4 class="returnvalue">Return Value</h4>
1932<p class="description">File descriptor or -1 if none</p>
1933<h3 class="function"><a name="httpGetField">httpGetField</a></h3>
1934<p class="description">Get a field value from a request/response.</p>
1935<p class="code">
1936const char *httpGetField (<br>
1937&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
f2324746 1938&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_field_t">http_field_t</a> field<br>
896cc0e8 1939);</p>
1940<h4 class="parameters">Parameters</h4>
1941<dl>
1942<dt>http</dt>
c73f649f 1943<dd class="description">Connection to server</dd>
896cc0e8 1944<dt>field</dt>
1945<dd class="description">Field to get</dd>
1946</dl>
1947<h4 class="returnvalue">Return Value</h4>
1948<p class="description">Field value</p>
1949<h3 class="function"><span class="info">&nbsp;DEPRECATED&nbsp;</span><a name="httpGetHostByName">httpGetHostByName</a></h3>
1950<p class="description">Lookup a hostname or IPv4 address, and return
1951address records for the specified name.</p>
1952<p class="code">
1953struct hostent *httpGetHostByName (<br>
1954&nbsp;&nbsp;&nbsp;&nbsp;const char *name<br>
1955);</p>
1956<h4 class="parameters">Parameters</h4>
1957<dl>
1958<dt>name</dt>
1959<dd class="description">Hostname or IP address</dd>
1960</dl>
1961<h4 class="returnvalue">Return Value</h4>
1962<p class="description">Host entry</p>
373b3e5f 1963<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpGetHostname">httpGetHostname</a></h3>
896cc0e8 1964<p class="description">Get the FQDN for the connection or local system.</p>
1965<p class="code">
1966const char *httpGetHostname (<br>
1967&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1968&nbsp;&nbsp;&nbsp;&nbsp;char *s,<br>
1969&nbsp;&nbsp;&nbsp;&nbsp;int slen<br>
1970);</p>
1971<h4 class="parameters">Parameters</h4>
1972<dl>
1973<dt>http</dt>
1974<dd class="description">HTTP connection or NULL</dd>
1975<dt>s</dt>
1976<dd class="description">String buffer for name</dd>
1977<dt>slen</dt>
1978<dd class="description">Size of buffer</dd>
1979</dl>
1980<h4 class="returnvalue">Return Value</h4>
1981<p class="description">FQDN for connection or system</p>
1982<h4 class="discussion">Discussion</h4>
1983<p class="discussion">When &quot;http&quot; points to a connected socket, return the hostname or
1984address that was used in the call to httpConnect() or httpConnectEncrypt().
1985Otherwise, return the FQDN for the local system using both gethostname()
1986and gethostbyname() to get the local hostname with domain.
1987
1988</p>
1989<h3 class="function"><span class="info">&nbsp;DEPRECATED&nbsp;</span><a name="httpGetLength">httpGetLength</a></h3>
1990<p class="description">Get the amount of data remaining from the
1991content-length or transfer-encoding fields.</p>
1992<p class="code">
1993int httpGetLength (<br>
1994&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1995);</p>
1996<h4 class="parameters">Parameters</h4>
1997<dl>
1998<dt>http</dt>
c73f649f 1999<dd class="description">Connection to server</dd>
896cc0e8 2000</dl>
2001<h4 class="returnvalue">Return Value</h4>
2002<p class="description">Content length</p>
2003<h4 class="discussion">Discussion</h4>
2004<p class="discussion">This function is deprecated and will not return lengths larger than
20052^31 - 1; use httpGetLength2() instead.
2006
2007</p>
373b3e5f 2008<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpGetLength2">httpGetLength2</a></h3>
896cc0e8 2009<p class="description">Get the amount of data remaining from the
2010content-length or transfer-encoding fields.</p>
2011<p class="code">
2012off_t httpGetLength2 (<br>
2013&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
2014);</p>
2015<h4 class="parameters">Parameters</h4>
2016<dl>
2017<dt>http</dt>
c73f649f 2018<dd class="description">Connection to server</dd>
896cc0e8 2019</dl>
2020<h4 class="returnvalue">Return Value</h4>
2021<p class="description">Content length</p>
2022<h4 class="discussion">Discussion</h4>
2023<p class="discussion">This function returns the complete content length, even for
2024content larger than 2^31 - 1.
2025
2026</p>
373b3e5f 2027<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpGetStatus">httpGetStatus</a></h3>
896cc0e8 2028<p class="description">Get the status of the last HTTP request.</p>
2029<p class="code">
f2324746 2030<a href="#http_status_t">http_status_t</a> httpGetStatus (<br>
896cc0e8 2031&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
2032);</p>
2033<h4 class="parameters">Parameters</h4>
2034<dl>
2035<dt>http</dt>
c73f649f 2036<dd class="description">Connection to server</dd>
896cc0e8 2037</dl>
2038<h4 class="returnvalue">Return Value</h4>
2039<p class="description">HTTP status</p>
2040<h3 class="function"><span class="info">&nbsp;DEPRECATED&nbsp;</span><a name="httpGetSubField">httpGetSubField</a></h3>
2041<p class="description">Get a sub-field value.</p>
2042<p class="code">
2043char *httpGetSubField (<br>
2044&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
f2324746 2045&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_field_t">http_field_t</a> field,<br>
896cc0e8 2046&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2047&nbsp;&nbsp;&nbsp;&nbsp;char *value<br>
2048);</p>
2049<h4 class="parameters">Parameters</h4>
2050<dl>
2051<dt>http</dt>
c73f649f 2052<dd class="description">Connection to server</dd>
896cc0e8 2053<dt>field</dt>
2054<dd class="description">Field index</dd>
2055<dt>name</dt>
2056<dd class="description">Name of sub-field</dd>
2057<dt>value</dt>
2058<dd class="description">Value string</dd>
2059</dl>
2060<h4 class="returnvalue">Return Value</h4>
2061<p class="description">Value or NULL</p>
373b3e5f 2062<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpGetSubField2">httpGetSubField2</a></h3>
896cc0e8 2063<p class="description">Get a sub-field value.</p>
2064<p class="code">
2065char *httpGetSubField2 (<br>
2066&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
f2324746 2067&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_field_t">http_field_t</a> field,<br>
896cc0e8 2068&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2069&nbsp;&nbsp;&nbsp;&nbsp;char *value,<br>
2070&nbsp;&nbsp;&nbsp;&nbsp;int valuelen<br>
2071);</p>
2072<h4 class="parameters">Parameters</h4>
2073<dl>
2074<dt>http</dt>
c73f649f 2075<dd class="description">Connection to server</dd>
896cc0e8 2076<dt>field</dt>
2077<dd class="description">Field index</dd>
2078<dt>name</dt>
2079<dd class="description">Name of sub-field</dd>
2080<dt>value</dt>
2081<dd class="description">Value string</dd>
2082<dt>valuelen</dt>
2083<dd class="description">Size of value buffer</dd>
2084</dl>
2085<h4 class="returnvalue">Return Value</h4>
2086<p class="description">Value or NULL</p>
2087<h3 class="function"><a name="httpGets">httpGets</a></h3>
2088<p class="description">Get a line of text from a HTTP connection.</p>
2089<p class="code">
2090char *httpGets (<br>
2091&nbsp;&nbsp;&nbsp;&nbsp;char *line,<br>
2092&nbsp;&nbsp;&nbsp;&nbsp;int length,<br>
2093&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
2094);</p>
2095<h4 class="parameters">Parameters</h4>
2096<dl>
2097<dt>line</dt>
2098<dd class="description">Line to read into</dd>
2099<dt>length</dt>
2100<dd class="description">Max length of buffer</dd>
2101<dt>http</dt>
c73f649f 2102<dd class="description">Connection to server</dd>
896cc0e8 2103</dl>
2104<h4 class="returnvalue">Return Value</h4>
2105<p class="description">Line or NULL</p>
2106<h3 class="function"><a name="httpHead">httpHead</a></h3>
2107<p class="description">Send a HEAD request to the server.</p>
2108<p class="code">
2109int httpHead (<br>
2110&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2111&nbsp;&nbsp;&nbsp;&nbsp;const char *uri<br>
2112);</p>
2113<h4 class="parameters">Parameters</h4>
2114<dl>
2115<dt>http</dt>
c73f649f 2116<dd class="description">Connection to server</dd>
896cc0e8 2117<dt>uri</dt>
2118<dd class="description">URI for head</dd>
2119</dl>
2120<h4 class="returnvalue">Return Value</h4>
2121<p class="description">Status of call (0 = success)</p>
2122<h3 class="function"><a name="httpInitialize">httpInitialize</a></h3>
2123<p class="description">Initialize the HTTP interface library and set the
2124default HTTP proxy (if any).</p>
2125<p class="code">
2126void httpInitialize (void);</p>
2127<h3 class="function"><a name="httpMD5">httpMD5</a></h3>
2128<p class="description">Compute the MD5 sum of the username:group:password.</p>
2129<p class="code">
2130char *httpMD5 (<br>
2131&nbsp;&nbsp;&nbsp;&nbsp;const char *username,<br>
2132&nbsp;&nbsp;&nbsp;&nbsp;const char *realm,<br>
2133&nbsp;&nbsp;&nbsp;&nbsp;const char *passwd,<br>
2134&nbsp;&nbsp;&nbsp;&nbsp;char md5[33]<br>
2135);</p>
2136<h4 class="parameters">Parameters</h4>
2137<dl>
2138<dt>username</dt>
2139<dd class="description">User name</dd>
2140<dt>realm</dt>
2141<dd class="description">Realm name</dd>
2142<dt>passwd</dt>
2143<dd class="description">Password string</dd>
2144<dt>md5[33]</dt>
2145<dd class="description">MD5 string</dd>
2146</dl>
2147<h4 class="returnvalue">Return Value</h4>
2148<p class="description">MD5 sum</p>
2149<h3 class="function"><a name="httpMD5Final">httpMD5Final</a></h3>
2150<p class="description">Combine the MD5 sum of the username, group, and password
2151with the server-supplied nonce value, method, and
2152request-uri.</p>
2153<p class="code">
2154char *httpMD5Final (<br>
2155&nbsp;&nbsp;&nbsp;&nbsp;const char *nonce,<br>
2156&nbsp;&nbsp;&nbsp;&nbsp;const char *method,<br>
2157&nbsp;&nbsp;&nbsp;&nbsp;const char *resource,<br>
2158&nbsp;&nbsp;&nbsp;&nbsp;char md5[33]<br>
2159);</p>
2160<h4 class="parameters">Parameters</h4>
2161<dl>
2162<dt>nonce</dt>
2163<dd class="description">Server nonce value</dd>
2164<dt>method</dt>
2165<dd class="description">METHOD (GET, POST, etc.)</dd>
2166<dt>resource</dt>
2167<dd class="description">Resource path</dd>
2168<dt>md5[33]</dt>
2169<dd class="description">MD5 sum</dd>
2170</dl>
2171<h4 class="returnvalue">Return Value</h4>
2172<p class="description">New sum</p>
2173<h3 class="function"><a name="httpMD5String">httpMD5String</a></h3>
2174<p class="description">Convert an MD5 sum to a character string.</p>
2175<p class="code">
2176char *httpMD5String (<br>
2177&nbsp;&nbsp;&nbsp;&nbsp;const unsigned char *sum,<br>
2178&nbsp;&nbsp;&nbsp;&nbsp;char md5[33]<br>
2179);</p>
2180<h4 class="parameters">Parameters</h4>
2181<dl>
2182<dt>sum</dt>
2183<dd class="description">MD5 sum data</dd>
2184<dt>md5[33]</dt>
2185<dd class="description">MD5 sum in hex</dd>
2186</dl>
2187<h4 class="returnvalue">Return Value</h4>
2188<p class="description">MD5 sum in hex</p>
2189<h3 class="function"><a name="httpOptions">httpOptions</a></h3>
2190<p class="description">Send an OPTIONS request to the server.</p>
2191<p class="code">
2192int httpOptions (<br>
2193&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2194&nbsp;&nbsp;&nbsp;&nbsp;const char *uri<br>
2195);</p>
2196<h4 class="parameters">Parameters</h4>
2197<dl>
2198<dt>http</dt>
c73f649f 2199<dd class="description">Connection to server</dd>
896cc0e8 2200<dt>uri</dt>
2201<dd class="description">URI for options</dd>
2202</dl>
2203<h4 class="returnvalue">Return Value</h4>
2204<p class="description">Status of call (0 = success)</p>
2205<h3 class="function"><a name="httpPost">httpPost</a></h3>
2206<p class="description">Send a POST request to the server.</p>
2207<p class="code">
2208int httpPost (<br>
2209&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2210&nbsp;&nbsp;&nbsp;&nbsp;const char *uri<br>
2211);</p>
2212<h4 class="parameters">Parameters</h4>
2213<dl>
2214<dt>http</dt>
c73f649f 2215<dd class="description">Connection to server</dd>
896cc0e8 2216<dt>uri</dt>
2217<dd class="description">URI for post</dd>
2218</dl>
2219<h4 class="returnvalue">Return Value</h4>
2220<p class="description">Status of call (0 = success)</p>
2221<h3 class="function"><a name="httpPut">httpPut</a></h3>
2222<p class="description">Send a PUT request to the server.</p>
2223<p class="code">
2224int httpPut (<br>
2225&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2226&nbsp;&nbsp;&nbsp;&nbsp;const char *uri<br>
2227);</p>
2228<h4 class="parameters">Parameters</h4>
2229<dl>
2230<dt>http</dt>
c73f649f 2231<dd class="description">Connection to server</dd>
896cc0e8 2232<dt>uri</dt>
2233<dd class="description">URI to put</dd>
2234</dl>
2235<h4 class="returnvalue">Return Value</h4>
2236<p class="description">Status of call (0 = success)</p>
2237<h3 class="function"><span class="info">&nbsp;DEPRECATED&nbsp;</span><a name="httpRead">httpRead</a></h3>
2238<p class="description">Read data from a HTTP connection.</p>
2239<p class="code">
2240int httpRead (<br>
2241&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2242&nbsp;&nbsp;&nbsp;&nbsp;char *buffer,<br>
2243&nbsp;&nbsp;&nbsp;&nbsp;int length<br>
2244);</p>
2245<h4 class="parameters">Parameters</h4>
2246<dl>
2247<dt>http</dt>
c73f649f 2248<dd class="description">Connection to server</dd>
896cc0e8 2249<dt>buffer</dt>
2250<dd class="description">Buffer for data</dd>
2251<dt>length</dt>
2252<dd class="description">Maximum number of bytes</dd>
2253</dl>
2254<h4 class="returnvalue">Return Value</h4>
2255<p class="description">Number of bytes read</p>
2256<h4 class="discussion">Discussion</h4>
2257<p class="discussion">This function is deprecated. Use the httpRead2() function which can
2258read more than 2GB of data.
2259
2260</p>
373b3e5f 2261<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpRead2">httpRead2</a></h3>
896cc0e8 2262<p class="description">Read data from a HTTP connection.</p>
2263<p class="code">
2264ssize_t httpRead2 (<br>
2265&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2266&nbsp;&nbsp;&nbsp;&nbsp;char *buffer,<br>
2267&nbsp;&nbsp;&nbsp;&nbsp;size_t length<br>
2268);</p>
2269<h4 class="parameters">Parameters</h4>
2270<dl>
2271<dt>http</dt>
c73f649f 2272<dd class="description">Connection to server</dd>
896cc0e8 2273<dt>buffer</dt>
2274<dd class="description">Buffer for data</dd>
2275<dt>length</dt>
2276<dd class="description">Maximum number of bytes</dd>
2277</dl>
2278<h4 class="returnvalue">Return Value</h4>
2279<p class="description">Number of bytes read</p>
2280<h3 class="function"><a name="httpReconnect">httpReconnect</a></h3>
2281<p class="description">Reconnect to a HTTP server.</p>
2282<p class="code">
2283int httpReconnect (<br>
2284&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
2285);</p>
2286<h4 class="parameters">Parameters</h4>
2287<dl>
2288<dt>http</dt>
c73f649f 2289<dd class="description">Connection to server</dd>
896cc0e8 2290</dl>
2291<h4 class="returnvalue">Return Value</h4>
2292<p class="description">0 on success, non-zero on failure</p>
2293<h3 class="function"><span class="info">&nbsp;DEPRECATED&nbsp;</span><a name="httpSeparate">httpSeparate</a></h3>
2294<p class="description">Separate a Universal Resource Identifier into its
2295components.</p>
2296<p class="code">
2297void httpSeparate (<br>
2298&nbsp;&nbsp;&nbsp;&nbsp;const char *uri,<br>
2299&nbsp;&nbsp;&nbsp;&nbsp;char *scheme,<br>
2300&nbsp;&nbsp;&nbsp;&nbsp;char *username,<br>
2301&nbsp;&nbsp;&nbsp;&nbsp;char *host,<br>
2302&nbsp;&nbsp;&nbsp;&nbsp;int *port,<br>
2303&nbsp;&nbsp;&nbsp;&nbsp;char *resource<br>
2304);</p>
2305<h4 class="parameters">Parameters</h4>
2306<dl>
2307<dt>uri</dt>
2308<dd class="description">Universal Resource Identifier</dd>
2309<dt>scheme</dt>
2310<dd class="description">Scheme [32] (http, https, etc.)</dd>
2311<dt>username</dt>
2312<dd class="description">Username [1024]</dd>
2313<dt>host</dt>
2314<dd class="description">Hostname [1024]</dd>
2315<dt>port</dt>
2316<dd class="description">Port number to use</dd>
2317<dt>resource</dt>
2318<dd class="description">Resource/filename [1024]</dd>
2319</dl>
2320<h4 class="discussion">Discussion</h4>
2321<p class="discussion">This function is deprecated; use the httpSeparateURI() function instead.
2322
2323</p>
373b3e5f 2324<h3 class="function"><span class="info">&nbsp;CUPS 1.1.21/Mac OS X 10.4&nbsp;</span><a name="httpSeparate2">httpSeparate2</a></h3>
896cc0e8 2325<p class="description">Separate a Universal Resource Identifier into its
2326components.</p>
2327<p class="code">
2328void httpSeparate2 (<br>
2329&nbsp;&nbsp;&nbsp;&nbsp;const char *uri,<br>
2330&nbsp;&nbsp;&nbsp;&nbsp;char *scheme,<br>
2331&nbsp;&nbsp;&nbsp;&nbsp;int schemelen,<br>
2332&nbsp;&nbsp;&nbsp;&nbsp;char *username,<br>
2333&nbsp;&nbsp;&nbsp;&nbsp;int usernamelen,<br>
2334&nbsp;&nbsp;&nbsp;&nbsp;char *host,<br>
2335&nbsp;&nbsp;&nbsp;&nbsp;int hostlen,<br>
2336&nbsp;&nbsp;&nbsp;&nbsp;int *port,<br>
2337&nbsp;&nbsp;&nbsp;&nbsp;char *resource,<br>
2338&nbsp;&nbsp;&nbsp;&nbsp;int resourcelen<br>
2339);</p>
2340<h4 class="parameters">Parameters</h4>
2341<dl>
2342<dt>uri</dt>
2343<dd class="description">Universal Resource Identifier</dd>
2344<dt>scheme</dt>
2345<dd class="description">Scheme (http, https, etc.)</dd>
2346<dt>schemelen</dt>
2347<dd class="description">Size of scheme buffer</dd>
2348<dt>username</dt>
2349<dd class="description">Username</dd>
2350<dt>usernamelen</dt>
2351<dd class="description">Size of username buffer</dd>
2352<dt>host</dt>
2353<dd class="description">Hostname</dd>
2354<dt>hostlen</dt>
2355<dd class="description">Size of hostname buffer</dd>
2356<dt>port</dt>
2357<dd class="description">Port number to use</dd>
2358<dt>resource</dt>
2359<dd class="description">Resource/filename</dd>
2360<dt>resourcelen</dt>
2361<dd class="description">Size of resource buffer</dd>
2362</dl>
2363<h4 class="discussion">Discussion</h4>
2364<p class="discussion">This function is deprecated; use the httpSeparateURI() function instead.
2365
2366
2367</p>
373b3e5f 2368<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpSeparateURI">httpSeparateURI</a></h3>
896cc0e8 2369<p class="description">Separate a Universal Resource Identifier into its
2370components.</p>
2371<p class="code">
f2324746 2372<a href="#http_uri_status_t">http_uri_status_t</a> httpSeparateURI (<br>
2373&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_uri_coding_t">http_uri_coding_t</a> decoding,<br>
896cc0e8 2374&nbsp;&nbsp;&nbsp;&nbsp;const char *uri,<br>
2375&nbsp;&nbsp;&nbsp;&nbsp;char *scheme,<br>
2376&nbsp;&nbsp;&nbsp;&nbsp;int schemelen,<br>
2377&nbsp;&nbsp;&nbsp;&nbsp;char *username,<br>
2378&nbsp;&nbsp;&nbsp;&nbsp;int usernamelen,<br>
2379&nbsp;&nbsp;&nbsp;&nbsp;char *host,<br>
2380&nbsp;&nbsp;&nbsp;&nbsp;int hostlen,<br>
2381&nbsp;&nbsp;&nbsp;&nbsp;int *port,<br>
2382&nbsp;&nbsp;&nbsp;&nbsp;char *resource,<br>
2383&nbsp;&nbsp;&nbsp;&nbsp;int resourcelen<br>
2384);</p>
2385<h4 class="parameters">Parameters</h4>
2386<dl>
2387<dt>decoding</dt>
2388<dd class="description">Decoding flags</dd>
2389<dt>uri</dt>
2390<dd class="description">Universal Resource Identifier</dd>
2391<dt>scheme</dt>
2392<dd class="description">Scheme (http, https, etc.)</dd>
2393<dt>schemelen</dt>
2394<dd class="description">Size of scheme buffer</dd>
2395<dt>username</dt>
2396<dd class="description">Username</dd>
2397<dt>usernamelen</dt>
2398<dd class="description">Size of username buffer</dd>
2399<dt>host</dt>
2400<dd class="description">Hostname</dd>
2401<dt>hostlen</dt>
2402<dd class="description">Size of hostname buffer</dd>
2403<dt>port</dt>
2404<dd class="description">Port number to use</dd>
2405<dt>resource</dt>
2406<dd class="description">Resource/filename</dd>
2407<dt>resourcelen</dt>
2408<dd class="description">Size of resource buffer</dd>
2409</dl>
2410<h4 class="returnvalue">Return Value</h4>
2411<p class="description">Result of separation</p>
373b3e5f 2412<h3 class="function"><span class="info">&nbsp;CUPS 1.3/Mac OS X 10.5&nbsp;</span><a name="httpSetAuthString">httpSetAuthString</a></h3>
896cc0e8 2413<p class="description">Set the current authorization string.</p>
2414<p class="code">
2415void httpSetAuthString (<br>
2416&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2417&nbsp;&nbsp;&nbsp;&nbsp;const char *scheme,<br>
2418&nbsp;&nbsp;&nbsp;&nbsp;const char *data<br>
2419);</p>
2420<h4 class="parameters">Parameters</h4>
2421<dl>
2422<dt>http</dt>
c73f649f 2423<dd class="description">Connection to server</dd>
896cc0e8 2424<dt>scheme</dt>
2425<dd class="description">Auth scheme (NULL to clear it)</dd>
2426<dt>data</dt>
2427<dd class="description">Auth data (NULL for none)</dd>
2428</dl>
2429<h4 class="discussion">Discussion</h4>
2430<p class="discussion">This function just stores a copy of the current authorization string in
2431the HTTP connection object. You must still call httpSetField() to set
2432HTTP_FIELD_AUTHORIZATION prior to issuing a HTTP request using httpGet(),
2433httpHead(), httpOptions(), httpPost, or httpPut().
2434
2435</p>
373b3e5f 2436<h3 class="function"><span class="info">&nbsp;CUPS 1.1.19/Mac OS X 10.3&nbsp;</span><a name="httpSetCookie">httpSetCookie</a></h3>
22ac733b 2437<p class="description">Set the cookie value(s).</p>
896cc0e8 2438<p class="code">
2439void httpSetCookie (<br>
2440&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2441&nbsp;&nbsp;&nbsp;&nbsp;const char *cookie<br>
2442);</p>
2443<h4 class="parameters">Parameters</h4>
2444<dl>
2445<dt>http</dt>
2446<dd class="description">Connection</dd>
2447<dt>cookie</dt>
2448<dd class="description">Cookie string</dd>
2449</dl>
a1a2e89a 2450<h3 class="function"><span class="info">&nbsp;CUPS 1.5/Mac OS X 10.7&nbsp;</span><a name="httpSetCredentials">httpSetCredentials</a></h3>
22ac733b 2451<p class="description">Set the credentials associated with an encrypted
2452connection.</p>
2453<p class="code">
2454int httpSetCredentials (<br>
2455&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2456&nbsp;&nbsp;&nbsp;&nbsp;cups_array_t *credentials<br>
2457);</p>
2458<h4 class="parameters">Parameters</h4>
2459<dl>
2460<dt>http</dt>
2461<dd class="description">Connection to server</dd>
2462<dt>credentials</dt>
2463<dd class="description">Array of credentials</dd>
2464</dl>
2465<h4 class="returnvalue">Return Value</h4>
2466<p class="description">Status of call (0 = success)</p>
373b3e5f 2467<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpSetExpect">httpSetExpect</a></h3>
896cc0e8 2468<p class="description">Set the Expect: header in a request.</p>
2469<p class="code">
2470void httpSetExpect (<br>
2471&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
f2324746 2472&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_status_t">http_status_t</a> expect<br>
896cc0e8 2473);</p>
2474<h4 class="parameters">Parameters</h4>
2475<dl>
2476<dt>http</dt>
c73f649f 2477<dd class="description">Connection to server</dd>
896cc0e8 2478<dt>expect</dt>
2479<dd class="description">HTTP status to expect (HTTP_CONTINUE)</dd>
2480</dl>
2481<h4 class="discussion">Discussion</h4>
2482<p class="discussion">Currently only HTTP_CONTINUE is supported for the &quot;expect&quot; argument.
2483
2484</p>
2485<h3 class="function"><a name="httpSetField">httpSetField</a></h3>
2486<p class="description">Set the value of an HTTP header.</p>
2487<p class="code">
2488void httpSetField (<br>
2489&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
f2324746 2490&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_field_t">http_field_t</a> field,<br>
896cc0e8 2491&nbsp;&nbsp;&nbsp;&nbsp;const char *value<br>
2492);</p>
2493<h4 class="parameters">Parameters</h4>
2494<dl>
2495<dt>http</dt>
c73f649f 2496<dd class="description">Connection to server</dd>
896cc0e8 2497<dt>field</dt>
2498<dd class="description">Field index</dd>
2499<dt>value</dt>
2500<dd class="description">Value</dd>
2501</dl>
373b3e5f 2502<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpSetLength">httpSetLength</a></h3>
896cc0e8 2503<p class="description">Set the content-length and content-encoding.</p>
2504<p class="code">
2505void httpSetLength (<br>
2506&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2507&nbsp;&nbsp;&nbsp;&nbsp;size_t length<br>
2508);</p>
2509<h4 class="parameters">Parameters</h4>
2510<dl>
2511<dt>http</dt>
c73f649f 2512<dd class="description">Connection to server</dd>
896cc0e8 2513<dt>length</dt>
2514<dd class="description">Length (0 for chunked)</dd>
2515</dl>
2516<h3 class="function"><a name="httpStatus">httpStatus</a></h3>
2517<p class="description">Return a short string describing a HTTP status code.</p>
2518<p class="code">
2519const char *httpStatus (<br>
f2324746 2520&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_status_t">http_status_t</a> status<br>
896cc0e8 2521);</p>
2522<h4 class="parameters">Parameters</h4>
2523<dl>
2524<dt>status</dt>
2525<dd class="description">HTTP status code</dd>
2526</dl>
2527<h4 class="returnvalue">Return Value</h4>
50bcef02 2528<p class="description">Localized status string</p>
2529<h4 class="discussion">Discussion</h4>
2530<p class="discussion">The returned string is localized to the current POSIX locale and is based
2531on the status strings defined in RFC 2616.</p>
896cc0e8 2532<h3 class="function"><a name="httpTrace">httpTrace</a></h3>
2533<p class="description">Send an TRACE request to the server.</p>
2534<p class="code">
2535int httpTrace (<br>
2536&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2537&nbsp;&nbsp;&nbsp;&nbsp;const char *uri<br>
2538);</p>
2539<h4 class="parameters">Parameters</h4>
2540<dl>
2541<dt>http</dt>
c73f649f 2542<dd class="description">Connection to server</dd>
896cc0e8 2543<dt>uri</dt>
2544<dd class="description">URI for trace</dd>
2545</dl>
2546<h4 class="returnvalue">Return Value</h4>
2547<p class="description">Status of call (0 = success)</p>
2548<h3 class="function"><a name="httpUpdate">httpUpdate</a></h3>
2549<p class="description">Update the current HTTP state for incoming data.</p>
2550<p class="code">
f2324746 2551<a href="#http_status_t">http_status_t</a> httpUpdate (<br>
896cc0e8 2552&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
2553);</p>
2554<h4 class="parameters">Parameters</h4>
2555<dl>
2556<dt>http</dt>
c73f649f 2557<dd class="description">Connection to server</dd>
896cc0e8 2558</dl>
2559<h4 class="returnvalue">Return Value</h4>
2560<p class="description">HTTP status</p>
373b3e5f 2561<h3 class="function"><span class="info">&nbsp;CUPS 1.1.19/Mac OS X 10.3&nbsp;</span><a name="httpWait">httpWait</a></h3>
896cc0e8 2562<p class="description">Wait for data available on a connection.</p>
2563<p class="code">
2564int httpWait (<br>
2565&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2566&nbsp;&nbsp;&nbsp;&nbsp;int msec<br>
2567);</p>
2568<h4 class="parameters">Parameters</h4>
2569<dl>
2570<dt>http</dt>
c73f649f 2571<dd class="description">Connection to server</dd>
896cc0e8 2572<dt>msec</dt>
2573<dd class="description">Milliseconds to wait</dd>
2574</dl>
2575<h4 class="returnvalue">Return Value</h4>
2576<p class="description">1 if data is available, 0 otherwise</p>
2577<h3 class="function"><span class="info">&nbsp;DEPRECATED&nbsp;</span><a name="httpWrite">httpWrite</a></h3>
2578<p class="description">Write data to a HTTP connection.</p>
2579<p class="code">
2580int httpWrite (<br>
2581&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2582&nbsp;&nbsp;&nbsp;&nbsp;const char *buffer,<br>
2583&nbsp;&nbsp;&nbsp;&nbsp;int length<br>
2584);</p>
2585<h4 class="parameters">Parameters</h4>
2586<dl>
2587<dt>http</dt>
c73f649f 2588<dd class="description">Connection to server</dd>
896cc0e8 2589<dt>buffer</dt>
2590<dd class="description">Buffer for data</dd>
2591<dt>length</dt>
2592<dd class="description">Number of bytes to write</dd>
2593</dl>
2594<h4 class="returnvalue">Return Value</h4>
2595<p class="description">Number of bytes written</p>
2596<h4 class="discussion">Discussion</h4>
2597<p class="discussion">This function is deprecated. Use the httpWrite2() function which can
2598write more than 2GB of data.
2599
2600</p>
373b3e5f 2601<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="httpWrite2">httpWrite2</a></h3>
896cc0e8 2602<p class="description">Write data to a HTTP connection.</p>
2603<p class="code">
2604ssize_t httpWrite2 (<br>
2605&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2606&nbsp;&nbsp;&nbsp;&nbsp;const char *buffer,<br>
2607&nbsp;&nbsp;&nbsp;&nbsp;size_t length<br>
2608);</p>
2609<h4 class="parameters">Parameters</h4>
2610<dl>
2611<dt>http</dt>
c73f649f 2612<dd class="description">Connection to server</dd>
896cc0e8 2613<dt>buffer</dt>
2614<dd class="description">Buffer for data</dd>
2615<dt>length</dt>
2616<dd class="description">Number of bytes to write</dd>
2617</dl>
2618<h4 class="returnvalue">Return Value</h4>
2619<p class="description">Number of bytes written</p>
2620<h3 class="function"><a name="ippAddBoolean">ippAddBoolean</a></h3>
2621<p class="description">Add a boolean attribute to an IPP message.</p>
2622<p class="code">
2623<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddBoolean (<br>
2624&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
f2324746 2625&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
896cc0e8 2626&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2627&nbsp;&nbsp;&nbsp;&nbsp;char value<br>
2628);</p>
2629<h4 class="parameters">Parameters</h4>
2630<dl>
2631<dt>ipp</dt>
2632<dd class="description">IPP message</dd>
2633<dt>group</dt>
2634<dd class="description">IPP group</dd>
2635<dt>name</dt>
2636<dd class="description">Name of attribute</dd>
2637<dt>value</dt>
2638<dd class="description">Value of attribute</dd>
2639</dl>
2640<h4 class="returnvalue">Return Value</h4>
2641<p class="description">New attribute</p>
2642<h3 class="function"><a name="ippAddBooleans">ippAddBooleans</a></h3>
2643<p class="description">Add an array of boolean values.</p>
2644<p class="code">
2645<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddBooleans (<br>
2646&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
f2324746 2647&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
896cc0e8 2648&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2649&nbsp;&nbsp;&nbsp;&nbsp;int num_values,<br>
2650&nbsp;&nbsp;&nbsp;&nbsp;const char *values<br>
2651);</p>
2652<h4 class="parameters">Parameters</h4>
2653<dl>
2654<dt>ipp</dt>
2655<dd class="description">IPP message</dd>
2656<dt>group</dt>
2657<dd class="description">IPP group</dd>
2658<dt>name</dt>
2659<dd class="description">Name of attribute</dd>
2660<dt>num_values</dt>
2661<dd class="description">Number of values</dd>
2662<dt>values</dt>
2663<dd class="description">Values</dd>
2664</dl>
2665<h4 class="returnvalue">Return Value</h4>
2666<p class="description">New attribute</p>
373b3e5f 2667<h3 class="function"><span class="info">&nbsp;CUPS 1.1.19/Mac OS X 10.3&nbsp;</span><a name="ippAddCollection">ippAddCollection</a></h3>
896cc0e8 2668<p class="description">Add a collection value.</p>
2669<p class="code">
2670<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddCollection (<br>
2671&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
f2324746 2672&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
896cc0e8 2673&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2674&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *value<br>
2675);</p>
2676<h4 class="parameters">Parameters</h4>
2677<dl>
2678<dt>ipp</dt>
2679<dd class="description">IPP message</dd>
2680<dt>group</dt>
2681<dd class="description">IPP group</dd>
2682<dt>name</dt>
2683<dd class="description">Name of attribute</dd>
2684<dt>value</dt>
2685<dd class="description">Value</dd>
2686</dl>
2687<h4 class="returnvalue">Return Value</h4>
2688<p class="description">New attribute</p>
373b3e5f 2689<h3 class="function"><span class="info">&nbsp;CUPS 1.1.19/Mac OS X 10.3&nbsp;</span><a name="ippAddCollections">ippAddCollections</a></h3>
896cc0e8 2690<p class="description">Add an array of collection values.</p>
2691<p class="code">
2692<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddCollections (<br>
2693&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
f2324746 2694&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
896cc0e8 2695&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2696&nbsp;&nbsp;&nbsp;&nbsp;int num_values,<br>
2697&nbsp;&nbsp;&nbsp;&nbsp;const <a href="#ipp_t">ipp_t</a> **values<br>
2698);</p>
2699<h4 class="parameters">Parameters</h4>
2700<dl>
2701<dt>ipp</dt>
2702<dd class="description">IPP message</dd>
2703<dt>group</dt>
2704<dd class="description">IPP group</dd>
2705<dt>name</dt>
2706<dd class="description">Name of attribute</dd>
2707<dt>num_values</dt>
2708<dd class="description">Number of values</dd>
2709<dt>values</dt>
2710<dd class="description">Values</dd>
2711</dl>
2712<h4 class="returnvalue">Return Value</h4>
2713<p class="description">New attribute</p>
2714<h3 class="function"><a name="ippAddDate">ippAddDate</a></h3>
2715<p class="description">Add a date attribute to an IPP message.</p>
2716<p class="code">
2717<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddDate (<br>
2718&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
f2324746 2719&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
896cc0e8 2720&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2721&nbsp;&nbsp;&nbsp;&nbsp;const <a href="#ipp_uchar_t">ipp_uchar_t</a> *value<br>
2722);</p>
2723<h4 class="parameters">Parameters</h4>
2724<dl>
2725<dt>ipp</dt>
2726<dd class="description">IPP message</dd>
2727<dt>group</dt>
2728<dd class="description">IPP group</dd>
2729<dt>name</dt>
2730<dd class="description">Name of attribute</dd>
2731<dt>value</dt>
2732<dd class="description">Value</dd>
2733</dl>
2734<h4 class="returnvalue">Return Value</h4>
2735<p class="description">New attribute</p>
2736<h3 class="function"><a name="ippAddInteger">ippAddInteger</a></h3>
2737<p class="description">Add a integer attribute to an IPP message.</p>
2738<p class="code">
2739<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddInteger (<br>
2740&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
f2324746 2741&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
2742&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> type,<br>
896cc0e8 2743&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2744&nbsp;&nbsp;&nbsp;&nbsp;int value<br>
2745);</p>
2746<h4 class="parameters">Parameters</h4>
2747<dl>
2748<dt>ipp</dt>
2749<dd class="description">IPP message</dd>
2750<dt>group</dt>
2751<dd class="description">IPP group</dd>
2752<dt>type</dt>
2753<dd class="description">Type of attribute</dd>
2754<dt>name</dt>
2755<dd class="description">Name of attribute</dd>
2756<dt>value</dt>
2757<dd class="description">Value of attribute</dd>
2758</dl>
2759<h4 class="returnvalue">Return Value</h4>
2760<p class="description">New attribute</p>
2761<h3 class="function"><a name="ippAddIntegers">ippAddIntegers</a></h3>
2762<p class="description">Add an array of integer values.</p>
2763<p class="code">
2764<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddIntegers (<br>
2765&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
f2324746 2766&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
2767&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> type,<br>
896cc0e8 2768&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2769&nbsp;&nbsp;&nbsp;&nbsp;int num_values,<br>
2770&nbsp;&nbsp;&nbsp;&nbsp;const int *values<br>
2771);</p>
2772<h4 class="parameters">Parameters</h4>
2773<dl>
2774<dt>ipp</dt>
2775<dd class="description">IPP message</dd>
2776<dt>group</dt>
2777<dd class="description">IPP group</dd>
2778<dt>type</dt>
2779<dd class="description">Type of attribute</dd>
2780<dt>name</dt>
2781<dd class="description">Name of attribute</dd>
2782<dt>num_values</dt>
2783<dd class="description">Number of values</dd>
2784<dt>values</dt>
2785<dd class="description">Values</dd>
2786</dl>
2787<h4 class="returnvalue">Return Value</h4>
2788<p class="description">New attribute</p>
373b3e5f 2789<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="ippAddOctetString">ippAddOctetString</a></h3>
896cc0e8 2790<p class="description">Add an octetString value to an IPP message.</p>
2791<p class="code">
2792<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddOctetString (<br>
2793&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
f2324746 2794&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
896cc0e8 2795&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2796&nbsp;&nbsp;&nbsp;&nbsp;const void *data,<br>
2797&nbsp;&nbsp;&nbsp;&nbsp;int datalen<br>
2798);</p>
2799<h4 class="parameters">Parameters</h4>
2800<dl>
2801<dt>ipp</dt>
2802<dd class="description">IPP message</dd>
2803<dt>group</dt>
2804<dd class="description">IPP group</dd>
2805<dt>name</dt>
2806<dd class="description">Name of attribute</dd>
2807<dt>data</dt>
2808<dd class="description">octetString data</dd>
2809<dt>datalen</dt>
2810<dd class="description">Length of data in bytes</dd>
2811</dl>
2812<h4 class="returnvalue">Return Value</h4>
2813<p class="description">New attribute</p>
2814<h3 class="function"><a name="ippAddRange">ippAddRange</a></h3>
2815<p class="description">Add a range of values to an IPP message.</p>
2816<p class="code">
2817<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddRange (<br>
2818&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
f2324746 2819&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
896cc0e8 2820&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2821&nbsp;&nbsp;&nbsp;&nbsp;int lower,<br>
2822&nbsp;&nbsp;&nbsp;&nbsp;int upper<br>
2823);</p>
2824<h4 class="parameters">Parameters</h4>
2825<dl>
2826<dt>ipp</dt>
2827<dd class="description">IPP message</dd>
2828<dt>group</dt>
2829<dd class="description">IPP group</dd>
2830<dt>name</dt>
2831<dd class="description">Name of attribute</dd>
2832<dt>lower</dt>
2833<dd class="description">Lower value</dd>
2834<dt>upper</dt>
2835<dd class="description">Upper value</dd>
2836</dl>
2837<h4 class="returnvalue">Return Value</h4>
2838<p class="description">New attribute</p>
2839<h3 class="function"><a name="ippAddRanges">ippAddRanges</a></h3>
2840<p class="description">Add ranges of values to an IPP message.</p>
2841<p class="code">
2842<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddRanges (<br>
2843&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
f2324746 2844&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
896cc0e8 2845&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2846&nbsp;&nbsp;&nbsp;&nbsp;int num_values,<br>
2847&nbsp;&nbsp;&nbsp;&nbsp;const int *lower,<br>
2848&nbsp;&nbsp;&nbsp;&nbsp;const int *upper<br>
2849);</p>
2850<h4 class="parameters">Parameters</h4>
2851<dl>
2852<dt>ipp</dt>
2853<dd class="description">IPP message</dd>
2854<dt>group</dt>
2855<dd class="description">IPP group</dd>
2856<dt>name</dt>
2857<dd class="description">Name of attribute</dd>
2858<dt>num_values</dt>
2859<dd class="description">Number of values</dd>
2860<dt>lower</dt>
2861<dd class="description">Lower values</dd>
2862<dt>upper</dt>
2863<dd class="description">Upper values</dd>
2864</dl>
2865<h4 class="returnvalue">Return Value</h4>
2866<p class="description">New attribute</p>
2867<h3 class="function"><a name="ippAddResolution">ippAddResolution</a></h3>
2868<p class="description">Add a resolution value to an IPP message.</p>
2869<p class="code">
2870<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddResolution (<br>
2871&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
f2324746 2872&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
896cc0e8 2873&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
f2324746 2874&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_res_t">ipp_res_t</a> units,<br>
896cc0e8 2875&nbsp;&nbsp;&nbsp;&nbsp;int xres,<br>
2876&nbsp;&nbsp;&nbsp;&nbsp;int yres<br>
2877);</p>
2878<h4 class="parameters">Parameters</h4>
2879<dl>
2880<dt>ipp</dt>
2881<dd class="description">IPP message</dd>
2882<dt>group</dt>
2883<dd class="description">IPP group</dd>
2884<dt>name</dt>
2885<dd class="description">Name of attribute</dd>
2886<dt>units</dt>
2887<dd class="description">Units for resolution</dd>
2888<dt>xres</dt>
2889<dd class="description">X resolution</dd>
2890<dt>yres</dt>
2891<dd class="description">Y resolution</dd>
2892</dl>
2893<h4 class="returnvalue">Return Value</h4>
2894<p class="description">New attribute</p>
2895<h3 class="function"><a name="ippAddResolutions">ippAddResolutions</a></h3>
2896<p class="description">Add resolution values to an IPP message.</p>
2897<p class="code">
2898<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddResolutions (<br>
2899&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
f2324746 2900&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
896cc0e8 2901&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2902&nbsp;&nbsp;&nbsp;&nbsp;int num_values,<br>
f2324746 2903&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_res_t">ipp_res_t</a> units,<br>
896cc0e8 2904&nbsp;&nbsp;&nbsp;&nbsp;const int *xres,<br>
2905&nbsp;&nbsp;&nbsp;&nbsp;const int *yres<br>
2906);</p>
2907<h4 class="parameters">Parameters</h4>
2908<dl>
2909<dt>ipp</dt>
2910<dd class="description">IPP message</dd>
2911<dt>group</dt>
2912<dd class="description">IPP group</dd>
2913<dt>name</dt>
2914<dd class="description">Name of attribute</dd>
2915<dt>num_values</dt>
2916<dd class="description">Number of values</dd>
2917<dt>units</dt>
2918<dd class="description">Units for resolution</dd>
2919<dt>xres</dt>
2920<dd class="description">X resolutions</dd>
2921<dt>yres</dt>
2922<dd class="description">Y resolutions</dd>
2923</dl>
2924<h4 class="returnvalue">Return Value</h4>
2925<p class="description">New attribute</p>
2926<h3 class="function"><a name="ippAddSeparator">ippAddSeparator</a></h3>
2927<p class="description">Add a group separator to an IPP message.</p>
2928<p class="code">
2929<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddSeparator (<br>
2930&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp<br>
2931);</p>
2932<h4 class="parameters">Parameters</h4>
2933<dl>
2934<dt>ipp</dt>
2935<dd class="description">IPP message</dd>
2936</dl>
2937<h4 class="returnvalue">Return Value</h4>
2938<p class="description">New attribute</p>
2939<h3 class="function"><a name="ippAddString">ippAddString</a></h3>
2940<p class="description">Add a language-encoded string to an IPP message.</p>
2941<p class="code">
2942<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddString (<br>
2943&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
f2324746 2944&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
2945&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> type,<br>
896cc0e8 2946&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2947&nbsp;&nbsp;&nbsp;&nbsp;const char *charset,<br>
2948&nbsp;&nbsp;&nbsp;&nbsp;const char *value<br>
2949);</p>
2950<h4 class="parameters">Parameters</h4>
2951<dl>
2952<dt>ipp</dt>
2953<dd class="description">IPP message</dd>
2954<dt>group</dt>
2955<dd class="description">IPP group</dd>
2956<dt>type</dt>
2957<dd class="description">Type of attribute</dd>
2958<dt>name</dt>
2959<dd class="description">Name of attribute</dd>
2960<dt>charset</dt>
2961<dd class="description">Character set</dd>
2962<dt>value</dt>
2963<dd class="description">Value</dd>
2964</dl>
2965<h4 class="returnvalue">Return Value</h4>
2966<p class="description">New attribute</p>
2967<h3 class="function"><a name="ippAddStrings">ippAddStrings</a></h3>
2968<p class="description">Add language-encoded strings to an IPP message.</p>
2969<p class="code">
2970<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddStrings (<br>
2971&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
f2324746 2972&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
2973&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> type,<br>
896cc0e8 2974&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2975&nbsp;&nbsp;&nbsp;&nbsp;int num_values,<br>
2976&nbsp;&nbsp;&nbsp;&nbsp;const char *charset,<br>
2977&nbsp;&nbsp;&nbsp;&nbsp;const char *const *values<br>
2978);</p>
2979<h4 class="parameters">Parameters</h4>
2980<dl>
2981<dt>ipp</dt>
2982<dd class="description">IPP message</dd>
2983<dt>group</dt>
2984<dd class="description">IPP group</dd>
2985<dt>type</dt>
2986<dd class="description">Type of attribute</dd>
2987<dt>name</dt>
2988<dd class="description">Name of attribute</dd>
2989<dt>num_values</dt>
2990<dd class="description">Number of values</dd>
2991<dt>charset</dt>
2992<dd class="description">Character set</dd>
2993<dt>values</dt>
2994<dd class="description">Values</dd>
2995</dl>
2996<h4 class="returnvalue">Return Value</h4>
2997<p class="description">New attribute</p>
2998<h3 class="function"><a name="ippDateToTime">ippDateToTime</a></h3>
2999<p class="description">Convert from RFC 1903 Date/Time format to UNIX time
3000in seconds.</p>
3001<p class="code">
3002time_t ippDateToTime (<br>
3003&nbsp;&nbsp;&nbsp;&nbsp;const <a href="#ipp_uchar_t">ipp_uchar_t</a> *date<br>
3004);</p>
3005<h4 class="parameters">Parameters</h4>
3006<dl>
3007<dt>date</dt>
3008<dd class="description">RFC 1903 date info</dd>
3009</dl>
3010<h4 class="returnvalue">Return Value</h4>
3011<p class="description">UNIX time value</p>
3012<h3 class="function"><a name="ippDelete">ippDelete</a></h3>
3013<p class="description">Delete an IPP message.</p>
3014<p class="code">
3015void ippDelete (<br>
3016&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp<br>
3017);</p>
3018<h4 class="parameters">Parameters</h4>
3019<dl>
3020<dt>ipp</dt>
3021<dd class="description">IPP message</dd>
3022</dl>
373b3e5f 3023<h3 class="function"><span class="info">&nbsp;CUPS 1.1.19/Mac OS X 10.3&nbsp;</span><a name="ippDeleteAttribute">ippDeleteAttribute</a></h3>
896cc0e8 3024<p class="description">Delete a single attribute in an IPP message.</p>
3025<p class="code">
3026void ippDeleteAttribute (<br>
3027&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
3028&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr<br>
3029);</p>
3030<h4 class="parameters">Parameters</h4>
3031<dl>
3032<dt>ipp</dt>
3033<dd class="description">IPP message</dd>
3034<dt>attr</dt>
3035<dd class="description">Attribute to delete</dd>
3036</dl>
3037<h3 class="function"><a name="ippErrorString">ippErrorString</a></h3>
3038<p class="description">Return a name for the given status code.</p>
3039<p class="code">
3040const char *ippErrorString (<br>
3041&nbsp;&nbsp;&nbsp;&nbsp;ipp_status_t error<br>
3042);</p>
3043<h4 class="parameters">Parameters</h4>
3044<dl>
3045<dt>error</dt>
3046<dd class="description">Error status</dd>
3047</dl>
3048<h4 class="returnvalue">Return Value</h4>
3049<p class="description">Text string</p>
373b3e5f 3050<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="ippErrorValue">ippErrorValue</a></h3>
896cc0e8 3051<p class="description">Return a status code for the given name.</p>
3052<p class="code">
3053ipp_status_t ippErrorValue (<br>
3054&nbsp;&nbsp;&nbsp;&nbsp;const char *name<br>
3055);</p>
3056<h4 class="parameters">Parameters</h4>
3057<dl>
3058<dt>name</dt>
3059<dd class="description">Name</dd>
3060</dl>
3061<h4 class="returnvalue">Return Value</h4>
3062<p class="description">IPP status code</p>
3063<h3 class="function"><a name="ippFindAttribute">ippFindAttribute</a></h3>
3064<p class="description">Find a named attribute in a request...</p>
3065<p class="code">
3066<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippFindAttribute (<br>
3067&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
3068&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
f2324746 3069&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> type<br>
896cc0e8 3070);</p>
3071<h4 class="parameters">Parameters</h4>
3072<dl>
3073<dt>ipp</dt>
3074<dd class="description">IPP message</dd>
3075<dt>name</dt>
3076<dd class="description">Name of attribute</dd>
3077<dt>type</dt>
3078<dd class="description">Type of attribute</dd>
3079</dl>
3080<h4 class="returnvalue">Return Value</h4>
3081<p class="description">Matching attribute</p>
3082<h3 class="function"><a name="ippFindNextAttribute">ippFindNextAttribute</a></h3>
3083<p class="description">Find the next named attribute in a request...</p>
3084<p class="code">
3085<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippFindNextAttribute (<br>
3086&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
3087&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
f2324746 3088&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> type<br>
896cc0e8 3089);</p>
3090<h4 class="parameters">Parameters</h4>
3091<dl>
3092<dt>ipp</dt>
3093<dd class="description">IPP message</dd>
3094<dt>name</dt>
3095<dd class="description">Name of attribute</dd>
3096<dt>type</dt>
3097<dd class="description">Type of attribute</dd>
3098</dl>
3099<h4 class="returnvalue">Return Value</h4>
3100<p class="description">Matching attribute</p>
3101<h3 class="function"><a name="ippLength">ippLength</a></h3>
3102<p class="description">Compute the length of an IPP message.</p>
3103<p class="code">
3104size_t ippLength (<br>
3105&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp<br>
3106);</p>
3107<h4 class="parameters">Parameters</h4>
3108<dl>
3109<dt>ipp</dt>
3110<dd class="description">IPP message</dd>
3111</dl>
3112<h4 class="returnvalue">Return Value</h4>
3113<p class="description">Size of IPP message</p>
3114<h3 class="function"><a name="ippNew">ippNew</a></h3>
3115<p class="description">Allocate a new IPP message.</p>
3116<p class="code">
3117<a href="#ipp_t">ipp_t</a> *ippNew (void);</p>
3118<h4 class="returnvalue">Return Value</h4>
3119<p class="description">New IPP message</p>
373b3e5f 3120<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="ippNewRequest">ippNewRequest</a></h3>
896cc0e8 3121<p class="description">Allocate a new IPP request message.</p>
3122<p class="code">
3123<a href="#ipp_t">ipp_t</a> *ippNewRequest (<br>
f2324746 3124&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_op_t">ipp_op_t</a> op<br>
896cc0e8 3125);</p>
3126<h4 class="parameters">Parameters</h4>
3127<dl>
3128<dt>op</dt>
3129<dd class="description">Operation code</dd>
3130</dl>
3131<h4 class="returnvalue">Return Value</h4>
3132<p class="description">IPP request message</p>
3133<h4 class="discussion">Discussion</h4>
3134<p class="discussion">The new request message is initialized with the attributes-charset and
3135attributes-natural-language attributes added. The
3136attributes-natural-language value is derived from the current locale.
3137
3138</p>
373b3e5f 3139<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="ippOpString">ippOpString</a></h3>
896cc0e8 3140<p class="description">Return a name for the given operation id.</p>
3141<p class="code">
3142const char *ippOpString (<br>
f2324746 3143&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_op_t">ipp_op_t</a> op<br>
896cc0e8 3144);</p>
3145<h4 class="parameters">Parameters</h4>
3146<dl>
3147<dt>op</dt>
3148<dd class="description">Operation ID</dd>
3149</dl>
3150<h4 class="returnvalue">Return Value</h4>
3151<p class="description">Name</p>
373b3e5f 3152<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="ippOpValue">ippOpValue</a></h3>
896cc0e8 3153<p class="description">Return an operation id for the given name.</p>
3154<p class="code">
f2324746 3155<a href="#ipp_op_t">ipp_op_t</a> ippOpValue (<br>
896cc0e8 3156&nbsp;&nbsp;&nbsp;&nbsp;const char *name<br>
3157);</p>
3158<h4 class="parameters">Parameters</h4>
3159<dl>
3160<dt>name</dt>
3161<dd class="description">Textual name</dd>
3162</dl>
3163<h4 class="returnvalue">Return Value</h4>
3164<p class="description">Operation ID</p>
3165<h3 class="function"><a name="ippPort">ippPort</a></h3>
3166<p class="description">Return the default IPP port number.</p>
3167<p class="code">
3168int ippPort (void);</p>
3169<h4 class="returnvalue">Return Value</h4>
3170<p class="description">Port number</p>
3171<h3 class="function"><a name="ippRead">ippRead</a></h3>
3172<p class="description">Read data for an IPP message from a HTTP connection.</p>
3173<p class="code">
f2324746 3174<a href="#ipp_state_t">ipp_state_t</a> ippRead (<br>
896cc0e8 3175&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
3176&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp<br>
3177);</p>
3178<h4 class="parameters">Parameters</h4>
3179<dl>
3180<dt>http</dt>
3181<dd class="description">HTTP connection</dd>
3182<dt>ipp</dt>
3183<dd class="description">IPP data</dd>
3184</dl>
3185<h4 class="returnvalue">Return Value</h4>
3186<p class="description">Current state</p>
373b3e5f 3187<h3 class="function"><span class="info">&nbsp;CUPS 1.1.19/Mac OS X 10.3&nbsp;</span><a name="ippReadFile">ippReadFile</a></h3>
896cc0e8 3188<p class="description">Read data for an IPP message from a file.</p>
3189<p class="code">
f2324746 3190<a href="#ipp_state_t">ipp_state_t</a> ippReadFile (<br>
896cc0e8 3191&nbsp;&nbsp;&nbsp;&nbsp;int fd,<br>
3192&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp<br>
3193);</p>
3194<h4 class="parameters">Parameters</h4>
3195<dl>
3196<dt>fd</dt>
3197<dd class="description">HTTP data</dd>
3198<dt>ipp</dt>
3199<dd class="description">IPP data</dd>
3200</dl>
3201<h4 class="returnvalue">Return Value</h4>
3202<p class="description">Current state</p>
373b3e5f 3203<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="ippReadIO">ippReadIO</a></h3>
896cc0e8 3204<p class="description">Read data for an IPP message.</p>
3205<p class="code">
f2324746 3206<a href="#ipp_state_t">ipp_state_t</a> ippReadIO (<br>
896cc0e8 3207&nbsp;&nbsp;&nbsp;&nbsp;void *src,<br>
3208&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_iocb_t">ipp_iocb_t</a> cb,<br>
3209&nbsp;&nbsp;&nbsp;&nbsp;int blocking,<br>
3210&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *parent,<br>
3211&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp<br>
3212);</p>
3213<h4 class="parameters">Parameters</h4>
3214<dl>
3215<dt>src</dt>
3216<dd class="description">Data source</dd>
3217<dt>cb</dt>
3218<dd class="description">Read callback function</dd>
3219<dt>blocking</dt>
3220<dd class="description">Use blocking IO?</dd>
3221<dt>parent</dt>
3222<dd class="description">Parent request, if any</dd>
3223<dt>ipp</dt>
3224<dd class="description">IPP data</dd>
3225</dl>
3226<h4 class="returnvalue">Return Value</h4>
3227<p class="description">Current state</p>
3228<h3 class="function"><a name="ippSetPort">ippSetPort</a></h3>
3229<p class="description">Set the default port number.</p>
3230<p class="code">
3231void ippSetPort (<br>
3232&nbsp;&nbsp;&nbsp;&nbsp;int p<br>
3233);</p>
3234<h4 class="parameters">Parameters</h4>
3235<dl>
3236<dt>p</dt>
3237<dd class="description">Port number to use</dd>
3238</dl>
abc7086c 3239<h3 class="function"><span class="info">&nbsp;CUPS 1.4/Mac OS X 10.6&nbsp;</span><a name="ippTagString">ippTagString</a></h3>
50bcef02 3240<p class="description">Return the tag name corresponding to a tag value.</p>
3241<p class="code">
3242const char *ippTagString (<br>
3243&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> tag<br>
3244);</p>
3245<h4 class="parameters">Parameters</h4>
3246<dl>
3247<dt>tag</dt>
3248<dd class="description">Tag value</dd>
3249</dl>
3250<h4 class="returnvalue">Return Value</h4>
3251<p class="description">Tag name</p>
3252<h4 class="discussion">Discussion</h4>
3253<p class="discussion">The returned names are defined in RFC 2911 and 3382.
3254
3255</p>
abc7086c 3256<h3 class="function"><span class="info">&nbsp;CUPS 1.4/Mac OS X 10.6&nbsp;</span><a name="ippTagValue">ippTagValue</a></h3>
50bcef02 3257<p class="description">Return the tag value corresponding to a tag name.</p>
3258<p class="code">
3259<a href="#ipp_tag_t">ipp_tag_t</a> ippTagValue (<br>
3260&nbsp;&nbsp;&nbsp;&nbsp;const char *name<br>
3261);</p>
3262<h4 class="parameters">Parameters</h4>
3263<dl>
3264<dt>name</dt>
3265<dd class="description">Tag name</dd>
3266</dl>
3267<h4 class="returnvalue">Return Value</h4>
3268<p class="description">Tag value</p>
3269<h4 class="discussion">Discussion</h4>
3270<p class="discussion">The tag names are defined in RFC 2911 and 3382.
3271
3272</p>
896cc0e8 3273<h3 class="function"><a name="ippTimeToDate">ippTimeToDate</a></h3>
3274<p class="description">Convert from UNIX time to RFC 1903 format.</p>
3275<p class="code">
3276const <a href="#ipp_uchar_t">ipp_uchar_t</a> *ippTimeToDate (<br>
3277&nbsp;&nbsp;&nbsp;&nbsp;time_t t<br>
3278);</p>
3279<h4 class="parameters">Parameters</h4>
3280<dl>
3281<dt>t</dt>
3282<dd class="description">UNIX time value</dd>
3283</dl>
3284<h4 class="returnvalue">Return Value</h4>
3285<p class="description">RFC-1903 date/time data</p>
3286<h3 class="function"><a name="ippWrite">ippWrite</a></h3>
3287<p class="description">Write data for an IPP message to a HTTP connection.</p>
3288<p class="code">
f2324746 3289<a href="#ipp_state_t">ipp_state_t</a> ippWrite (<br>
896cc0e8 3290&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
3291&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp<br>
3292);</p>
3293<h4 class="parameters">Parameters</h4>
3294<dl>
3295<dt>http</dt>
3296<dd class="description">HTTP connection</dd>
3297<dt>ipp</dt>
3298<dd class="description">IPP data</dd>
3299</dl>
3300<h4 class="returnvalue">Return Value</h4>
3301<p class="description">Current state</p>
373b3e5f 3302<h3 class="function"><span class="info">&nbsp;CUPS 1.1.19/Mac OS X 10.3&nbsp;</span><a name="ippWriteFile">ippWriteFile</a></h3>
896cc0e8 3303<p class="description">Write data for an IPP message to a file.</p>
3304<p class="code">
f2324746 3305<a href="#ipp_state_t">ipp_state_t</a> ippWriteFile (<br>
896cc0e8 3306&nbsp;&nbsp;&nbsp;&nbsp;int fd,<br>
3307&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp<br>
3308);</p>
3309<h4 class="parameters">Parameters</h4>
3310<dl>
3311<dt>fd</dt>
3312<dd class="description">HTTP data</dd>
3313<dt>ipp</dt>
3314<dd class="description">IPP data</dd>
3315</dl>
3316<h4 class="returnvalue">Return Value</h4>
3317<p class="description">Current state</p>
373b3e5f 3318<h3 class="function"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="ippWriteIO">ippWriteIO</a></h3>
896cc0e8 3319<p class="description">Write data for an IPP message.</p>
3320<p class="code">
f2324746 3321<a href="#ipp_state_t">ipp_state_t</a> ippWriteIO (<br>
896cc0e8 3322&nbsp;&nbsp;&nbsp;&nbsp;void *dst,<br>
3323&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_iocb_t">ipp_iocb_t</a> cb,<br>
3324&nbsp;&nbsp;&nbsp;&nbsp;int blocking,<br>
3325&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *parent,<br>
3326&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp<br>
3327);</p>
3328<h4 class="parameters">Parameters</h4>
3329<dl>
3330<dt>dst</dt>
3331<dd class="description">Destination</dd>
3332<dt>cb</dt>
3333<dd class="description">Write callback function</dd>
3334<dt>blocking</dt>
3335<dd class="description">Use blocking IO?</dd>
3336<dt>parent</dt>
3337<dd class="description">Parent IPP message</dd>
3338<dt>ipp</dt>
3339<dd class="description">IPP data</dd>
3340</dl>
3341<h4 class="returnvalue">Return Value</h4>
3342<p class="description">Current state</p>
3343<h2 class="title"><a name="TYPES">Data Types</a></h2>
562234e1 3344<h3 class="typedef"><a name="gss_auth_identity_desc">gss_auth_identity_desc</a></h3>
3345<p class="description">Local functions...</p>
3346<p class="code">
3347typedef struct <a href="#gss_auth_identity">gss_auth_identity</a> gss_auth_identity_desc;
3348</p>
8eb1383e 3349<h3 class="typedef"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="http_addr_t">http_addr_t</a></h3>
3350<p class="description">Socket address union, which
3351makes using IPv6 and other
3352address types easier and
3353more portable. </p>
3354<p class="code">
3355typedef union _http_addr_u / http_addr_t;
3356</p>
373b3e5f 3357<h3 class="typedef"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="http_addrlist_t">http_addrlist_t</a></h3>
896cc0e8 3358<p class="description">Socket address list, which is
3359used to enumerate all of the
3360addresses that are associated
3361with a hostname. </p>
3362<p class="code">
3363typedef struct <a href="#http_addrlist_s">http_addrlist_s</a> / http_addrlist_t;
3364</p>
3365<h3 class="typedef"><a name="http_auth_t">http_auth_t</a></h3>
3366<p class="description">HTTP authentication types</p>
3367<p class="code">
3368typedef enum <a href="#http_auth_e">http_auth_e</a> http_auth_t;
3369</p>
a1a2e89a 3370<h3 class="typedef"><span class="info">&nbsp;CUPS 1.5/Mac OS X 10.7&nbsp;</span><a name="http_credential_t">http_credential_t</a></h3>
22ac733b 3371<p class="description">Credential data </p>
3372<p class="code">
3373typedef struct <a href="#http_credential_s">http_credential_s</a> http_credential_t;
3374</p>
896cc0e8 3375<h3 class="typedef"><a name="http_encoding_t">http_encoding_t</a></h3>
3376<p class="description">HTTP transfer encoding values</p>
3377<p class="code">
3378typedef enum <a href="#http_encoding_e">http_encoding_e</a> http_encoding_t;
3379</p>
3380<h3 class="typedef"><a name="http_encryption_t">http_encryption_t</a></h3>
3381<p class="description">HTTP encryption values</p>
3382<p class="code">
3383typedef enum <a href="#http_encryption_e">http_encryption_e</a> http_encryption_t;
3384</p>
f2324746 3385<h3 class="typedef"><a name="http_field_t">http_field_t</a></h3>
3386<p class="description">HTTP field names</p>
3387<p class="code">
3388typedef enum <a href="#http_field_e">http_field_e</a> http_field_t;
3389</p>
3390<h3 class="typedef"><a name="http_keepalive_t">http_keepalive_t</a></h3>
8eb1383e 3391<p class="description">HTTP keep-alive values</p>
f2324746 3392<p class="code">
3393typedef enum <a href="#http_keepalive_e">http_keepalive_e</a> http_keepalive_t;
3394</p>
8eb1383e 3395<h3 class="typedef"><a name="http_state_t">http_state_t</a></h3>
3396<p class="description">HTTP state values; states
3397are server-oriented...</p>
3398<p class="code">
3399typedef enum <a href="#http_state_e">http_state_e</a> / http_state_t;
3400</p>
f2324746 3401<h3 class="typedef"><a name="http_status_t">http_status_t</a></h3>
3402<p class="description">HTTP status codes</p>
3403<p class="code">
3404typedef enum <a href="#http_status_e">http_status_e</a> http_status_t;
3405</p>
896cc0e8 3406<h3 class="typedef"><a name="http_t">http_t</a></h3>
3407<p class="description">HTTP connection type</p>
3408<p class="code">
3409typedef struct _http_s http_t;
3410</p>
f2324746 3411<h3 class="typedef"><a name="http_uri_coding_t">http_uri_coding_t</a></h3>
8eb1383e 3412<p class="description">URI en/decode flags</p>
f2324746 3413<p class="code">
3414typedef enum <a href="#http_uri_coding_e">http_uri_coding_e</a> http_uri_coding_t;
3415</p>
22ac733b 3416<h3 class="typedef"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="http_uri_status_t">http_uri_status_t</a></h3>
8eb1383e 3417<p class="description">URI separation status </p>
f2324746 3418<p class="code">
3419typedef enum <a href="#http_uri_status_e">http_uri_status_e</a> http_uri_status_t;
3420</p>
8eb1383e 3421<h3 class="typedef"><a name="http_version_t">http_version_t</a></h3>
3422<p class="description">HTTP version numbers</p>
f2324746 3423<p class="code">
3424typedef enum <a href="#http_version_e">http_version_e</a> http_version_t;
3425</p>
896cc0e8 3426<h3 class="typedef"><a name="ipp_attribute_t">ipp_attribute_t</a></h3>
3427<p class="description">Attribute</p>
3428<p class="code">
3429typedef struct <a href="#ipp_attribute_s">ipp_attribute_s</a> ipp_attribute_t;
3430</p>
f2324746 3431<h3 class="typedef"><a name="ipp_finish_t">ipp_finish_t</a></h3>
fab532bb 3432<p class="description">Finishings</p>
f2324746 3433<p class="code">
3434typedef enum <a href="#ipp_finish_e">ipp_finish_e</a> ipp_finish_t;
3435</p>
373b3e5f 3436<h3 class="typedef"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="ipp_iocb_t">ipp_iocb_t</a></h3>
896cc0e8 3437<p class="description">IPP IO Callback Function </p>
3438<p class="code">
3439typedef ssize_t (*ipp_iocb_t)(void *, <a href="#ipp_uchar_t">ipp_uchar_t</a> *, size_t);
3440</p>
f2324746 3441<h3 class="typedef"><a name="ipp_jstate_t">ipp_jstate_t</a></h3>
fab532bb 3442<p class="description">Job states</p>
f2324746 3443<p class="code">
3444typedef enum <a href="#ipp_jstate_e">ipp_jstate_e</a> ipp_jstate_t;
3445</p>
3446<h3 class="typedef"><a name="ipp_op_t">ipp_op_t</a></h3>
fab532bb 3447<p class="description">IPP operations</p>
f2324746 3448<p class="code">
3449typedef enum <a href="#ipp_op_e">ipp_op_e</a> ipp_op_t;
3450</p>
3451<h3 class="typedef"><a name="ipp_orient_t">ipp_orient_t</a></h3>
fab532bb 3452<p class="description">Orientation values</p>
f2324746 3453<p class="code">
3454typedef enum <a href="#ipp_orient_e">ipp_orient_e</a> ipp_orient_t;
3455</p>
3456<h3 class="typedef"><a name="ipp_pstate_t">ipp_pstate_t</a></h3>
fab532bb 3457<p class="description">Printer states</p>
f2324746 3458<p class="code">
3459typedef enum <a href="#ipp_pstate_e">ipp_pstate_e</a> ipp_pstate_t;
3460</p>
3461<h3 class="typedef"><a name="ipp_quality_t">ipp_quality_t</a></h3>
fab532bb 3462<p class="description">Qualities</p>
f2324746 3463<p class="code">
3464typedef enum <a href="#ipp_quality_e">ipp_quality_e</a> ipp_quality_t;
3465</p>
896cc0e8 3466<h3 class="typedef"><a name="ipp_request_t">ipp_request_t</a></h3>
3467<p class="description">Request Header</p>
3468<p class="code">
3469typedef union <a href="#ipp_request_u">ipp_request_u</a> ipp_request_t;
3470</p>
f2324746 3471<h3 class="typedef"><a name="ipp_res_t">ipp_res_t</a></h3>
fab532bb 3472<p class="description">Resolution units</p>
f2324746 3473<p class="code">
3474typedef enum <a href="#ipp_res_e">ipp_res_e</a> ipp_res_t;
3475</p>
3476<h3 class="typedef"><a name="ipp_state_t">ipp_state_t</a></h3>
fab532bb 3477<p class="description">IPP states</p>
f2324746 3478<p class="code">
3479typedef enum <a href="#ipp_state_e">ipp_state_e</a> ipp_state_t;
3480</p>
896cc0e8 3481<h3 class="typedef"><a name="ipp_t">ipp_t</a></h3>
3482<p class="description">Attribute Value</p>
3483<p class="code">
3484typedef struct <a href="#ipp_s">ipp_s</a> ipp_t;
3485</p>
3486<h3 class="typedef"><a name="ipp_uchar_t">ipp_uchar_t</a></h3>
fab532bb 3487<p class="description">IPP status codes</p>
896cc0e8 3488<p class="code">
3489typedef typedef unsigned char ipp_uchar_t;
3490</p>
f2324746 3491<h3 class="typedef"><a name="ipp_tag_t">ipp_tag_t</a></h3>
fab532bb 3492<p class="description">Format tags for attributes</p>
f2324746 3493<p class="code">
3494typedef enum <a href="#ipp_tag_e">ipp_tag_e</a> ipp_tag_t;
3495</p>
896cc0e8 3496<h3 class="typedef"><a name="ipp_value_t">ipp_value_t</a></h3>
8eb1383e 3497<p class="description">Attribute Value</p>
896cc0e8 3498<p class="code">
3499typedef union <a href="#ipp_value_u">ipp_value_u</a> ipp_value_t;
3500</p>
3501<h2 class="title"><a name="STRUCTURES">Structures</a></h2>
562234e1 3502<h3 class="struct"><a name="gss_auth_identity">gss_auth_identity</a></h3>
3503<p class="description">Local functions...</p>
3504<p class="code">struct gss_auth_identity {<br>
3505&nbsp;&nbsp;&nbsp;&nbsp;gss_buffer_t *credentialsRef;<br>
3506&nbsp;&nbsp;&nbsp;&nbsp;uint32_t flags;<br>
3507&nbsp;&nbsp;&nbsp;&nbsp;char *password;<br>
3508&nbsp;&nbsp;&nbsp;&nbsp;char *realm;<br>
3509&nbsp;&nbsp;&nbsp;&nbsp;uint32_t type;<br>
3510&nbsp;&nbsp;&nbsp;&nbsp;char *username;<br>
3511};</p>
3512<h4 class="members">Members</h4>
3513<dl>
3514<dt>credentialsRef </dt>
3515<dt>flags </dt>
3516<dt>password </dt>
3517<dt>realm </dt>
3518<dt>type </dt>
3519<dt>username </dt>
3520</dl>
373b3e5f 3521<h3 class="struct"><span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span><a name="http_addrlist_s">http_addrlist_s</a></h3>
896cc0e8 3522<p class="description">Socket address list, which is
3523used to enumerate all of the
3524addresses that are associated
3525with a hostname. </p>
3526<p class="code">struct http_addrlist_s {<br>
3527&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_addr_t">http_addr_t</a> addr;<br>
3528&nbsp;&nbsp;&nbsp;&nbsp;struct <a href="#http_addrlist_s">http_addrlist_s</a> *next;<br>
3529};</p>
3530<h4 class="members">Members</h4>
3531<dl>
3532<dt>addr </dt>
3533<dd class="description">Address</dd>
3534<dt>next </dt>
3535<dd class="description">Pointer to next address in list</dd>
3536</dl>
a1a2e89a 3537<h3 class="struct"><span class="info">&nbsp;CUPS 1.5/Mac OS X 10.7&nbsp;</span><a name="http_credential_s">http_credential_s</a></h3>
22ac733b 3538<p class="description">Credential data </p>
3539<p class="code">struct http_credential_s {<br>
3540&nbsp;&nbsp;&nbsp;&nbsp;void *data;<br>
3541&nbsp;&nbsp;&nbsp;&nbsp;size_t datalen;<br>
3542};</p>
3543<h4 class="members">Members</h4>
3544<dl>
3545<dt>data </dt>
3546<dd class="description">Pointer to credential data</dd>
3547<dt>datalen </dt>
3548<dd class="description">Credential length</dd>
3549</dl>
896cc0e8 3550<h3 class="struct"><a name="ipp_attribute_s">ipp_attribute_s</a></h3>
3551<p class="description">Attribute</p>
3552<p class="code">struct ipp_attribute_s {<br>
3553&nbsp;&nbsp;&nbsp;&nbsp;char *name;<br>
3554&nbsp;&nbsp;&nbsp;&nbsp;struct <a href="#ipp_attribute_s">ipp_attribute_s</a> *next;<br>
3555&nbsp;&nbsp;&nbsp;&nbsp;int num_values;<br>
f2324746 3556&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group_tag, value_tag;<br>
896cc0e8 3557&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_value_t">ipp_value_t</a> values[1];<br>
3558};</p>
3559<h4 class="members">Members</h4>
3560<dl>
3561<dt>name </dt>
3562<dd class="description">Name of attribute</dd>
3563<dt>next </dt>
3564<dd class="description">Next attribute in list</dd>
3565<dt>num_values </dt>
3566<dd class="description">Number of values</dd>
3567<dt>value_tag </dt>
3568<dd class="description">What type of value is it?</dd>
3569<dt>values[1] </dt>
3570<dd class="description">Values</dd>
3571</dl>
3572<h3 class="struct"><a name="ipp_s">ipp_s</a></h3>
3573<p class="description">IPP Request/Response/Notification</p>
3574<p class="code">struct ipp_s {<br>
3575&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_attribute_t">ipp_attribute_t</a> *attrs;<br>
3576&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_attribute_t">ipp_attribute_t</a> *current;<br>
f2324746 3577&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> curtag;<br>
896cc0e8 3578&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_attribute_t">ipp_attribute_t</a> *last;<br>
3579&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_attribute_t">ipp_attribute_t</a> *prev;<br>
3580&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_request_t">ipp_request_t</a> request;<br>
f2324746 3581&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_state_t">ipp_state_t</a> state;<br>
fab532bb 3582&nbsp;&nbsp;&nbsp;&nbsp;int use;<br>
896cc0e8 3583};</p>
3584<h4 class="members">Members</h4>
3585<dl>
3586<dt>attrs </dt>
3587<dd class="description">Attributes</dd>
3588<dt>current </dt>
3589<dd class="description">Current attribute (for read/write)</dd>
3590<dt>curtag </dt>
3591<dd class="description">Current attribute group tag</dd>
3592<dt>last </dt>
3593<dd class="description">Last attribute in list</dd>
373b3e5f 3594<dt>prev <span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span></dt>
3595<dd class="description">Previous attribute (for read) </dd>
896cc0e8 3596<dt>request </dt>
3597<dd class="description">Request header</dd>
3598<dt>state </dt>
3599<dd class="description">State of request</dd>
22ac733b 3600<dt>use <span class="info">&nbsp;CUPS 1.4.4/Mac OS X 10.6.?&nbsp;</span></dt>
3601<dd class="description">Use count </dd>
896cc0e8 3602</dl>
3603<h2 class="title"><a name="UNIONS">Unions</a></h2>
3604<h3 class="union"><a name="ipp_request_u">ipp_request_u</a></h3>
3605<p class="description">Request Header</p>
3606<p class="code">union ipp_request_u {<br>
3607};</p>
3608<h4 class="members">Members</h4>
3609<dl>
3610</dl>
3611<h3 class="union"><a name="ipp_value_u">ipp_value_u</a></h3>
8eb1383e 3612<p class="description">Attribute Value</p>
896cc0e8 3613<p class="code">union ipp_value_u {<br>
3614&nbsp;&nbsp;&nbsp;&nbsp;char boolean;<br>
3615&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *collection;<br>
3616&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_uchar_t">ipp_uchar_t</a> date[11];<br>
3617&nbsp;&nbsp;&nbsp;&nbsp;int integer;<br>
3618};</p>
3619<h4 class="members">Members</h4>
3620<dl>
3621<dt>boolean </dt>
3622<dd class="description">Boolean value</dd>
373b3e5f 3623<dt>collection <span class="info">&nbsp;CUPS 1.1.19/Mac OS X 10.3&nbsp;</span></dt>
3624<dd class="description">Collection value </dd>
896cc0e8 3625<dt>date[11] </dt>
3626<dd class="description">Date/time value</dd>
3627<dt>integer </dt>
3628<dd class="description">Integer/enumerated value</dd>
3629</dl>
3630<h2 class="title"><a name="ENUMERATIONS">Constants</a></h2>
3631<h3 class="enumeration"><a name="http_auth_e">http_auth_e</a></h3>
3632<p class="description">HTTP authentication types</p>
3633<h4 class="constants">Constants</h4>
3634<dl>
3635<dt>HTTP_AUTH_BASIC </dt>
3636<dd class="description">Basic authentication in use</dd>
3637<dt>HTTP_AUTH_MD5 </dt>
3638<dd class="description">Digest authentication in use</dd>
3639<dt>HTTP_AUTH_MD5_INT </dt>
3640<dd class="description">Digest authentication in use for body</dd>
3641<dt>HTTP_AUTH_MD5_SESS </dt>
3642<dd class="description">MD5-session authentication in use</dd>
3643<dt>HTTP_AUTH_MD5_SESS_INT </dt>
3644<dd class="description">MD5-session authentication in use for body</dd>
373b3e5f 3645<dt>HTTP_AUTH_NEGOTIATE <span class="info">&nbsp;CUPS 1.3/Mac OS X 10.5&nbsp;</span></dt>
896cc0e8 3646<dd class="description">GSSAPI authentication in use </dd>
3647<dt>HTTP_AUTH_NONE </dt>
3648<dd class="description">No authentication in use</dd>
3649</dl>
3650<h3 class="enumeration"><a name="http_encoding_e">http_encoding_e</a></h3>
3651<p class="description">HTTP transfer encoding values</p>
3652<h4 class="constants">Constants</h4>
3653<dl>
3654<dt>HTTP_ENCODE_CHUNKED </dt>
3655<dd class="description">Data is chunked</dd>
3656<dt>HTTP_ENCODE_FIELDS </dt>
3657<dd class="description">Sending HTTP fields</dd>
3658<dt>HTTP_ENCODE_LENGTH </dt>
3659<dd class="description">Data is sent with Content-Length</dd>
3660</dl>
3661<h3 class="enumeration"><a name="http_encryption_e">http_encryption_e</a></h3>
3662<p class="description">HTTP encryption values</p>
3663<h4 class="constants">Constants</h4>
3664<dl>
3665<dt>HTTP_ENCRYPT_ALWAYS </dt>
3666<dd class="description">Always encrypt (SSL)</dd>
3667<dt>HTTP_ENCRYPT_IF_REQUESTED </dt>
3668<dd class="description">Encrypt if requested (TLS upgrade)</dd>
3669<dt>HTTP_ENCRYPT_NEVER </dt>
3670<dd class="description">Never encrypt</dd>
3671<dt>HTTP_ENCRYPT_REQUIRED </dt>
3672<dd class="description">Encryption is required (TLS upgrade)</dd>
3673</dl>
3674<h3 class="enumeration"><a name="http_field_e">http_field_e</a></h3>
3675<p class="description">HTTP field names</p>
3676<h4 class="constants">Constants</h4>
3677<dl>
3678<dt>HTTP_FIELD_ACCEPT_LANGUAGE </dt>
3679<dd class="description">Accept-Language field</dd>
3680<dt>HTTP_FIELD_ACCEPT_RANGES </dt>
3681<dd class="description">Accept-Ranges field</dd>
3682<dt>HTTP_FIELD_AUTHORIZATION </dt>
3683<dd class="description">Authorization field</dd>
3684<dt>HTTP_FIELD_CONNECTION </dt>
3685<dd class="description">Connection field</dd>
3686<dt>HTTP_FIELD_CONTENT_ENCODING </dt>
3687<dd class="description">Content-Encoding field</dd>
3688<dt>HTTP_FIELD_CONTENT_LANGUAGE </dt>
3689<dd class="description">Content-Language field</dd>
3690<dt>HTTP_FIELD_CONTENT_LENGTH </dt>
3691<dd class="description">Content-Length field</dd>
3692<dt>HTTP_FIELD_CONTENT_LOCATION </dt>
3693<dd class="description">Content-Location field</dd>
3694<dt>HTTP_FIELD_CONTENT_MD5 </dt>
3695<dd class="description">Content-MD5 field</dd>
3696<dt>HTTP_FIELD_CONTENT_RANGE </dt>
3697<dd class="description">Content-Range field</dd>
3698<dt>HTTP_FIELD_CONTENT_TYPE </dt>
3699<dd class="description">Content-Type field</dd>
3700<dt>HTTP_FIELD_CONTENT_VERSION </dt>
3701<dd class="description">Content-Version field</dd>
3702<dt>HTTP_FIELD_DATE </dt>
3703<dd class="description">Date field</dd>
3704<dt>HTTP_FIELD_HOST </dt>
3705<dd class="description">Host field</dd>
3706<dt>HTTP_FIELD_IF_MODIFIED_SINCE </dt>
3707<dd class="description">If-Modified-Since field</dd>
3708<dt>HTTP_FIELD_IF_UNMODIFIED_SINCE </dt>
3709<dd class="description">If-Unmodified-Since field</dd>
3710<dt>HTTP_FIELD_KEEP_ALIVE </dt>
3711<dd class="description">Keep-Alive field</dd>
3712<dt>HTTP_FIELD_LAST_MODIFIED </dt>
3713<dd class="description">Last-Modified field</dd>
3714<dt>HTTP_FIELD_LINK </dt>
3715<dd class="description">Link field</dd>
3716<dt>HTTP_FIELD_LOCATION </dt>
3717<dd class="description">Location field</dd>
3718<dt>HTTP_FIELD_MAX </dt>
3719<dd class="description">Maximum field index</dd>
3720<dt>HTTP_FIELD_RANGE </dt>
3721<dd class="description">Range field</dd>
3722<dt>HTTP_FIELD_REFERER </dt>
3723<dd class="description">Referer field</dd>
3724<dt>HTTP_FIELD_RETRY_AFTER </dt>
3725<dd class="description">Retry-After field</dd>
3726<dt>HTTP_FIELD_TRANSFER_ENCODING </dt>
3727<dd class="description">Transfer-Encoding field</dd>
3728<dt>HTTP_FIELD_UNKNOWN </dt>
3729<dd class="description">Unknown field</dd>
3730<dt>HTTP_FIELD_UPGRADE </dt>
3731<dd class="description">Upgrade field</dd>
3732<dt>HTTP_FIELD_USER_AGENT </dt>
3733<dd class="description">User-Agent field</dd>
3734<dt>HTTP_FIELD_WWW_AUTHENTICATE </dt>
3735<dd class="description">WWW-Authenticate field</dd>
3736</dl>
3737<h3 class="enumeration"><a name="http_keepalive_e">http_keepalive_e</a></h3>
8eb1383e 3738<p class="description">HTTP keep-alive values</p>
896cc0e8 3739<h4 class="constants">Constants</h4>
3740<dl>
3741<dt>HTTP_KEEPALIVE_OFF </dt>
3742<dd class="description">No keep alive support</dd>
3743<dt>HTTP_KEEPALIVE_ON </dt>
3744<dd class="description">Use keep alive</dd>
3745</dl>
3746<h3 class="enumeration"><a name="http_state_e">http_state_e</a></h3>
8eb1383e 3747<p class="description">HTTP state values; states
3748are server-oriented...</p>
896cc0e8 3749<h4 class="constants">Constants</h4>
3750<dl>
3751<dt>HTTP_CLOSE </dt>
3752<dd class="description">CLOSE command, waiting for blank line</dd>
3753<dt>HTTP_DELETE </dt>
3754<dd class="description">DELETE command, waiting for blank line</dd>
3755<dt>HTTP_GET </dt>
3756<dd class="description">GET command, waiting for blank line</dd>
3757<dt>HTTP_GET_SEND </dt>
3758<dd class="description">GET command, sending data</dd>
3759<dt>HTTP_HEAD </dt>
3760<dd class="description">HEAD command, waiting for blank line</dd>
3761<dt>HTTP_OPTIONS </dt>
3762<dd class="description">OPTIONS command, waiting for blank line</dd>
3763<dt>HTTP_POST </dt>
3764<dd class="description">POST command, waiting for blank line</dd>
3765<dt>HTTP_POST_RECV </dt>
3766<dd class="description">POST command, receiving data</dd>
3767<dt>HTTP_POST_SEND </dt>
3768<dd class="description">POST command, sending data</dd>
3769<dt>HTTP_PUT </dt>
3770<dd class="description">PUT command, waiting for blank line</dd>
3771<dt>HTTP_PUT_RECV </dt>
3772<dd class="description">PUT command, receiving data</dd>
3773<dt>HTTP_STATUS </dt>
3774<dd class="description">Command complete, sending status</dd>
3775<dt>HTTP_TRACE </dt>
3776<dd class="description">TRACE command, waiting for blank line</dd>
3777<dt>HTTP_WAITING </dt>
3778<dd class="description">Waiting for command</dd>
3779</dl>
3780<h3 class="enumeration"><a name="http_status_e">http_status_e</a></h3>
3781<p class="description">HTTP status codes</p>
3782<h4 class="constants">Constants</h4>
3783<dl>
3784<dt>HTTP_ACCEPTED </dt>
3785<dd class="description">DELETE command was successful</dd>
22ac733b 3786<dt>HTTP_AUTHORIZATION_CANCELED <span class="info">&nbsp;CUPS 1.4&nbsp;</span></dt>
3787<dd class="description">User canceled authorization </dd>
896cc0e8 3788<dt>HTTP_BAD_GATEWAY </dt>
3789<dd class="description">Bad gateway</dd>
3790<dt>HTTP_BAD_REQUEST </dt>
3791<dd class="description">Bad request</dd>
3792<dt>HTTP_CONFLICT </dt>
3793<dd class="description">Request is self-conflicting</dd>
3794<dt>HTTP_CONTINUE </dt>
3795<dd class="description">Everything OK, keep going...</dd>
3796<dt>HTTP_CREATED </dt>
3797<dd class="description">PUT command was successful</dd>
3798<dt>HTTP_ERROR </dt>
3799<dd class="description">An error response from httpXxxx()</dd>
3800<dt>HTTP_EXPECTATION_FAILED </dt>
3801<dd class="description">The expectation given in an Expect header field was not met</dd>
3802<dt>HTTP_FORBIDDEN </dt>
3803<dd class="description">Forbidden to access this URI</dd>
3804<dt>HTTP_GATEWAY_TIMEOUT </dt>
3805<dd class="description">Gateway connection timed out</dd>
3806<dt>HTTP_GONE </dt>
3807<dd class="description">Server has gone away</dd>
3808<dt>HTTP_LENGTH_REQUIRED </dt>
3809<dd class="description">A content length or encoding is required</dd>
3810<dt>HTTP_METHOD_NOT_ALLOWED </dt>
3811<dd class="description">Method is not allowed</dd>
3812<dt>HTTP_MOVED_PERMANENTLY </dt>
3813<dd class="description">Document has moved permanently</dd>
3814<dt>HTTP_MOVED_TEMPORARILY </dt>
3815<dd class="description">Document has moved temporarily</dd>
3816<dt>HTTP_MULTIPLE_CHOICES </dt>
3817<dd class="description">Multiple files match request</dd>
3818<dt>HTTP_NOT_ACCEPTABLE </dt>
3819<dd class="description">Not Acceptable</dd>
3820<dt>HTTP_NOT_AUTHORITATIVE </dt>
3821<dd class="description">Information isn't authoritative</dd>
3822<dt>HTTP_NOT_FOUND </dt>
3823<dd class="description">URI was not found</dd>
3824<dt>HTTP_NOT_IMPLEMENTED </dt>
3825<dd class="description">Feature not implemented</dd>
3826<dt>HTTP_NOT_MODIFIED </dt>
3827<dd class="description">File not modified</dd>
3828<dt>HTTP_NOT_SUPPORTED </dt>
3829<dd class="description">HTTP version not supported</dd>
3830<dt>HTTP_NO_CONTENT </dt>
3831<dd class="description">Successful command, no new data</dd>
3832<dt>HTTP_OK </dt>
3833<dd class="description">OPTIONS/GET/HEAD/POST/TRACE command was successful</dd>
3834<dt>HTTP_PARTIAL_CONTENT </dt>
3835<dd class="description">Only a partial file was recieved/sent</dd>
3836<dt>HTTP_PAYMENT_REQUIRED </dt>
3837<dd class="description">Payment required</dd>
a1a2e89a 3838<dt>HTTP_PKI_ERROR <span class="info">&nbsp;CUPS 1.5/Mac OS X 10.7&nbsp;</span></dt>
22ac733b 3839<dd class="description">Error negotiating a secure connection </dd>
896cc0e8 3840<dt>HTTP_PRECONDITION </dt>
3841<dd class="description">Precondition failed</dd>
3842<dt>HTTP_PROXY_AUTHENTICATION </dt>
3843<dd class="description">Proxy Authentication is Required</dd>
3844<dt>HTTP_REQUESTED_RANGE </dt>
3845<dd class="description">The requested range is not satisfiable</dd>
3846<dt>HTTP_REQUEST_TIMEOUT </dt>
3847<dd class="description">Request timed out</dd>
3848<dt>HTTP_REQUEST_TOO_LARGE </dt>
3849<dd class="description">Request entity too large</dd>
3850<dt>HTTP_RESET_CONTENT </dt>
3851<dd class="description">Content was reset/recreated</dd>
3852<dt>HTTP_SEE_OTHER </dt>
3853<dd class="description">See this other link...</dd>
3854<dt>HTTP_SERVER_ERROR </dt>
3855<dd class="description">Internal server error</dd>
3856<dt>HTTP_SERVICE_UNAVAILABLE </dt>
3857<dd class="description">Service is unavailable</dd>
3858<dt>HTTP_SWITCHING_PROTOCOLS </dt>
3859<dd class="description">HTTP upgrade to TLS/SSL</dd>
3860<dt>HTTP_UNAUTHORIZED </dt>
3861<dd class="description">Unauthorized to access host</dd>
3862<dt>HTTP_UNSUPPORTED_MEDIATYPE </dt>
3863<dd class="description">The requested media type is unsupported</dd>
3864<dt>HTTP_UPGRADE_REQUIRED </dt>
3865<dd class="description">Upgrade to SSL/TLS required</dd>
3866<dt>HTTP_URI_TOO_LONG </dt>
3867<dd class="description">URI too long</dd>
3868<dt>HTTP_USE_PROXY </dt>
3869<dd class="description">Must use a proxy to access this URI</dd>
3870</dl>
3871<h3 class="enumeration"><a name="http_uri_coding_e">http_uri_coding_e</a></h3>
8eb1383e 3872<p class="description">URI en/decode flags</p>
896cc0e8 3873<h4 class="constants">Constants</h4>
3874<dl>
3875<dt>HTTP_URI_CODING_ALL </dt>
3876<dd class="description">En/decode everything</dd>
3877<dt>HTTP_URI_CODING_HOSTNAME </dt>
3878<dd class="description">En/decode the hostname portion</dd>
3879<dt>HTTP_URI_CODING_MOST </dt>
3880<dd class="description">En/decode all but the query</dd>
3881<dt>HTTP_URI_CODING_NONE </dt>
3882<dd class="description">Don't en/decode anything</dd>
3883<dt>HTTP_URI_CODING_QUERY </dt>
3884<dd class="description">En/decode the query portion</dd>
3885<dt>HTTP_URI_CODING_RESOURCE </dt>
3886<dd class="description">En/decode the resource portion</dd>
3887<dt>HTTP_URI_CODING_USERNAME </dt>
3888<dd class="description">En/decode the username portion</dd>
3889</dl>
22ac733b 3890<h3 class="enumeration"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="http_uri_status_e">http_uri_status_e</a></h3>
8eb1383e 3891<p class="description">URI separation status </p>
896cc0e8 3892<h4 class="constants">Constants</h4>
3893<dl>
3894<dt>HTTP_URI_BAD_ARGUMENTS </dt>
3895<dd class="description">Bad arguments to function (error)</dd>
3896<dt>HTTP_URI_BAD_HOSTNAME </dt>
3897<dd class="description">Bad hostname in URI (error)</dd>
3898<dt>HTTP_URI_BAD_PORT </dt>
3899<dd class="description">Bad port number in URI (error)</dd>
3900<dt>HTTP_URI_BAD_RESOURCE </dt>
3901<dd class="description">Bad resource in URI (error)</dd>
3902<dt>HTTP_URI_BAD_SCHEME </dt>
3903<dd class="description">Bad scheme in URI (error)</dd>
3904<dt>HTTP_URI_BAD_URI </dt>
3905<dd class="description">Bad/empty URI (error)</dd>
3906<dt>HTTP_URI_BAD_USERNAME </dt>
3907<dd class="description">Bad username in URI (error)</dd>
3908<dt>HTTP_URI_MISSING_RESOURCE </dt>
3909<dd class="description">Missing resource in URI (warning)</dd>
3910<dt>HTTP_URI_MISSING_SCHEME </dt>
3911<dd class="description">Missing scheme in URI (warning)</dd>
3912<dt>HTTP_URI_OK </dt>
3913<dd class="description">URI decoded OK</dd>
3914<dt>HTTP_URI_OVERFLOW </dt>
3915<dd class="description">URI buffer for httpAssembleURI is too small</dd>
3916<dt>HTTP_URI_UNKNOWN_SCHEME </dt>
3917<dd class="description">Unknown scheme in URI (warning)</dd>
3918</dl>
3919<h3 class="enumeration"><a name="http_version_e">http_version_e</a></h3>
8eb1383e 3920<p class="description">HTTP version numbers</p>
896cc0e8 3921<h4 class="constants">Constants</h4>
3922<dl>
3923<dt>HTTP_0_9 </dt>
3924<dd class="description">HTTP/0.9</dd>
3925<dt>HTTP_1_0 </dt>
3926<dd class="description">HTTP/1.0</dd>
3927<dt>HTTP_1_1 </dt>
3928<dd class="description">HTTP/1.1</dd>
3929</dl>
3930<h3 class="enumeration"><a name="ipp_finish_e">ipp_finish_e</a></h3>
fab532bb 3931<p class="description">Finishings</p>
896cc0e8 3932<h4 class="constants">Constants</h4>
3933<dl>
3934<dt>IPP_FINISHINGS_BALE </dt>
3935<dd class="description">Bale (any type)</dd>
3936<dt>IPP_FINISHINGS_BIND </dt>
3937<dd class="description">Bind</dd>
3938<dt>IPP_FINISHINGS_BIND_BOTTOM </dt>
3939<dd class="description">Bind on bottom</dd>
3940<dt>IPP_FINISHINGS_BIND_LEFT </dt>
3941<dd class="description">Bind on left</dd>
3942<dt>IPP_FINISHINGS_BIND_RIGHT </dt>
3943<dd class="description">Bind on right</dd>
3944<dt>IPP_FINISHINGS_BIND_TOP </dt>
3945<dd class="description">Bind on top</dd>
3946<dt>IPP_FINISHINGS_BOOKLET_MAKER </dt>
3947<dd class="description">Fold to make booklet</dd>
3948<dt>IPP_FINISHINGS_COVER </dt>
3949<dd class="description">Add cover</dd>
3950<dt>IPP_FINISHINGS_EDGE_STITCH </dt>
3951<dd class="description">Stitch along any side</dd>
3952<dt>IPP_FINISHINGS_EDGE_STITCH_BOTTOM </dt>
3953<dd class="description">Stitch along bottom edge</dd>
3954<dt>IPP_FINISHINGS_EDGE_STITCH_LEFT </dt>
3955<dd class="description">Stitch along left side</dd>
3956<dt>IPP_FINISHINGS_EDGE_STITCH_RIGHT </dt>
3957<dd class="description">Stitch along right side</dd>
3958<dt>IPP_FINISHINGS_EDGE_STITCH_TOP </dt>
3959<dd class="description">Stitch along top edge</dd>
3960<dt>IPP_FINISHINGS_FOLD </dt>
3961<dd class="description">Fold (any type)</dd>
3962<dt>IPP_FINISHINGS_JOB_OFFSET </dt>
3963<dd class="description">Offset for binding (any type)</dd>
3964<dt>IPP_FINISHINGS_NONE </dt>
3965<dd class="description">No finishing</dd>
3966<dt>IPP_FINISHINGS_PUNCH </dt>
3967<dd class="description">Punch (any location/count)</dd>
3968<dt>IPP_FINISHINGS_SADDLE_STITCH </dt>
3969<dd class="description">Staple interior</dd>
3970<dt>IPP_FINISHINGS_STAPLE </dt>
3971<dd class="description">Staple (any location)</dd>
3972<dt>IPP_FINISHINGS_STAPLE_BOTTOM_LEFT </dt>
3973<dd class="description">Staple bottom left corner</dd>
3974<dt>IPP_FINISHINGS_STAPLE_BOTTOM_RIGHT </dt>
3975<dd class="description">Staple bottom right corner</dd>
3976<dt>IPP_FINISHINGS_STAPLE_DUAL_BOTTOM </dt>
3977<dd class="description">Two staples on bottom</dd>
3978<dt>IPP_FINISHINGS_STAPLE_DUAL_LEFT </dt>
3979<dd class="description">Two staples on left</dd>
3980<dt>IPP_FINISHINGS_STAPLE_DUAL_RIGHT </dt>
3981<dd class="description">Two staples on right</dd>
3982<dt>IPP_FINISHINGS_STAPLE_DUAL_TOP </dt>
3983<dd class="description">Two staples on top</dd>
3984<dt>IPP_FINISHINGS_STAPLE_TOP_LEFT </dt>
3985<dd class="description">Staple top left corner</dd>
3986<dt>IPP_FINISHINGS_STAPLE_TOP_RIGHT </dt>
3987<dd class="description">Staple top right corner</dd>
3988<dt>IPP_FINISHINGS_TRIM </dt>
3989<dd class="description">Trim (any type)</dd>
3990</dl>
3991<h3 class="enumeration"><a name="ipp_jstate_e">ipp_jstate_e</a></h3>
fab532bb 3992<p class="description">Job states</p>
896cc0e8 3993<h4 class="constants">Constants</h4>
3994<dl>
3995<dt>IPP_JOB_ABORTED </dt>
3996<dd class="description">Job has aborted due to error</dd>
3997<dt>IPP_JOB_CANCELED </dt>
3998<dd class="description">Job has been canceled</dd>
3999<dt>IPP_JOB_COMPLETED </dt>
4000<dd class="description">Job has completed successfully</dd>
4001<dt>IPP_JOB_HELD </dt>
4002<dd class="description">Job is held for printing</dd>
4003<dt>IPP_JOB_PENDING </dt>
4004<dd class="description">Job is waiting to be printed</dd>
4005<dt>IPP_JOB_PROCESSING </dt>
4006<dd class="description">Job is currently printing</dd>
4007<dt>IPP_JOB_STOPPED </dt>
4008<dd class="description">Job has been stopped</dd>
4009</dl>
4010<h3 class="enumeration"><a name="ipp_op_e">ipp_op_e</a></h3>
fab532bb 4011<p class="description">IPP operations</p>
896cc0e8 4012<h4 class="constants">Constants</h4>
4013<dl>
4014<dt>CUPS_ACCEPT_JOBS </dt>
4015<dd class="description">Accept new jobs on a printer</dd>
4016<dt>CUPS_ADD_MODIFY_CLASS </dt>
4017<dd class="description">Add or modify a class</dd>
4018<dt>CUPS_ADD_MODIFY_PRINTER </dt>
4019<dd class="description">Add or modify a printer</dd>
373b3e5f 4020<dt>CUPS_AUTHENTICATE_JOB <span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span></dt>
896cc0e8 4021<dd class="description">Authenticate a job </dd>
4022<dt>CUPS_DELETE_CLASS </dt>
4023<dd class="description">Delete a class</dd>
4024<dt>CUPS_DELETE_PRINTER </dt>
4025<dd class="description">Delete a printer</dd>
4026<dt>CUPS_GET_CLASSES <span class="info">&nbsp;DEPRECATED&nbsp;</span></dt>
4027<dd class="description">Get a list of classes </dd>
4028<dt>CUPS_GET_DEFAULT </dt>
4029<dd class="description">Get the default printer</dd>
4030<dt>CUPS_GET_DEVICES </dt>
4031<dd class="description">Get a list of supported devices</dd>
abc7086c 4032<dt>CUPS_GET_DOCUMENT <span class="info">&nbsp;CUPS 1.4/Mac OS X 10.6&nbsp;</span></dt>
896cc0e8 4033<dd class="description">Get a document file </dd>
373b3e5f 4034<dt>CUPS_GET_PPD <span class="info">&nbsp;CUPS 1.3/Mac OS X 10.5&nbsp;</span></dt>
896cc0e8 4035<dd class="description">Get a PPD file </dd>
4036<dt>CUPS_GET_PPDS </dt>
4037<dd class="description">Get a list of supported drivers</dd>
4038<dt>CUPS_GET_PRINTERS </dt>
4039<dd class="description">Get a list of printers and/or classes</dd>
4040<dt>CUPS_MOVE_JOB </dt>
4041<dd class="description">Move a job to a different printer</dd>
4042<dt>CUPS_REJECT_JOBS </dt>
4043<dd class="description">Reject new jobs on a printer</dd>
4044<dt>CUPS_SET_DEFAULT </dt>
4045<dd class="description">Set the default printer</dd>
4046<dt>IPP_CANCEL_JOB </dt>
4047<dd class="description">Cancel a job</dd>
fab532bb 4048<dt>IPP_CANCEL_JOBS </dt>
4049<dd class="description">Cancel-Jobs</dd>
4050<dt>IPP_CANCEL_MY_JOBS </dt>
4051<dd class="description">Cancel-My-Jobs</dd>
373b3e5f 4052<dt>IPP_CANCEL_SUBSCRIPTION <span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span></dt>
896cc0e8 4053<dd class="description">Cancel a subscription </dd>
fab532bb 4054<dt>IPP_CLOSE_JOB </dt>
4055<dd class="description">Close-Job</dd>
896cc0e8 4056<dt>IPP_CREATE_JOB </dt>
4057<dd class="description">Create an empty print job</dd>
373b3e5f 4058<dt>IPP_CREATE_JOB_SUBSCRIPTION <span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span></dt>
896cc0e8 4059<dd class="description">Create a job subscription </dd>
373b3e5f 4060<dt>IPP_CREATE_PRINTER_SUBSCRIPTION <span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span></dt>
896cc0e8 4061<dd class="description">Create a printer subscription </dd>
4062<dt>IPP_DISABLE_PRINTER </dt>
4063<dd class="description">Stop a printer</dd>
4064<dt>IPP_ENABLE_PRINTER </dt>
4065<dd class="description">Start a printer</dd>
4066<dt>IPP_GET_JOBS </dt>
4067<dd class="description">Get a list of jobs</dd>
4068<dt>IPP_GET_JOB_ATTRIBUTES </dt>
4069<dd class="description">Get job attributes</dd>
373b3e5f 4070<dt>IPP_GET_NOTIFICATIONS <span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span></dt>
896cc0e8 4071<dd class="description">Get notification events </dd>
4072<dt>IPP_GET_PRINTER_ATTRIBUTES </dt>
4073<dd class="description">Get printer attributes</dd>
4074<dt>IPP_GET_PRINTER_SUPPORTED_VALUES </dt>
4075<dd class="description">Get supported attribute values</dd>
373b3e5f 4076<dt>IPP_GET_SUBSCRIPTIONS <span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span></dt>
896cc0e8 4077<dd class="description">Get list of subscriptions </dd>
373b3e5f 4078<dt>IPP_GET_SUBSCRIPTION_ATTRIBUTES <span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span></dt>
896cc0e8 4079<dd class="description">Get subscription attributes </dd>
4080<dt>IPP_HOLD_JOB </dt>
4081<dd class="description">Hold a job for printing</dd>
4082<dt>IPP_PAUSE_PRINTER </dt>
4083<dd class="description">Stop a printer</dd>
4084<dt>IPP_PRINT_JOB </dt>
4085<dd class="description">Print a single file</dd>
4086<dt>IPP_PURGE_JOBS </dt>
4087<dd class="description">Cancel all jobs</dd>
4088<dt>IPP_RELEASE_JOB </dt>
4089<dd class="description">Release a job for printing</dd>
373b3e5f 4090<dt>IPP_RENEW_SUBSCRIPTION <span class="info">&nbsp;CUPS 1.2/Mac OS X 10.5&nbsp;</span></dt>
896cc0e8 4091<dd class="description">Renew a printer subscription </dd>
4092<dt>IPP_RESTART_JOB </dt>
4093<dd class="description">Reprint a job</dd>
fab532bb 4094<dt>IPP_RESUBMIT_JOB </dt>
4095<dd class="description">Resubmit-Job</dd>
896cc0e8 4096<dt>IPP_RESUME_PRINTER </dt>
4097<dd class="description">Start a printer</dd>
4098<dt>IPP_SEND_DOCUMENT </dt>
4099<dd class="description">Add a file to a job</dd>
4100<dt>IPP_SET_JOB_ATTRIBUTES </dt>
4101<dd class="description">Set job attributes</dd>
4102<dt>IPP_VALIDATE_JOB </dt>
4103<dd class="description">Validate job options</dd>
4104</dl>
4105<h3 class="enumeration"><a name="ipp_orient_e">ipp_orient_e</a></h3>
fab532bb 4106<p class="description">Orientation values</p>
896cc0e8 4107<h4 class="constants">Constants</h4>
4108<dl>
4109<dt>IPP_LANDSCAPE </dt>
4110<dd class="description">90 degrees counter-clockwise</dd>
4111<dt>IPP_PORTRAIT </dt>
4112<dd class="description">No rotation</dd>
4113<dt>IPP_REVERSE_LANDSCAPE </dt>
4114<dd class="description">90 degrees clockwise</dd>
4115<dt>IPP_REVERSE_PORTRAIT </dt>
4116<dd class="description">180 degrees</dd>
4117</dl>
4118<h3 class="enumeration"><a name="ipp_pstate_e">ipp_pstate_e</a></h3>
fab532bb 4119<p class="description">Printer states</p>
896cc0e8 4120<h4 class="constants">Constants</h4>
4121<dl>
4122<dt>IPP_PRINTER_IDLE </dt>
4123<dd class="description">Printer is idle</dd>
4124<dt>IPP_PRINTER_PROCESSING </dt>
4125<dd class="description">Printer is working</dd>
4126<dt>IPP_PRINTER_STOPPED </dt>
4127<dd class="description">Printer is stopped</dd>
4128</dl>
4129<h3 class="enumeration"><a name="ipp_quality_e">ipp_quality_e</a></h3>
fab532bb 4130<p class="description">Qualities</p>
896cc0e8 4131<h4 class="constants">Constants</h4>
4132<dl>
4133<dt>IPP_QUALITY_DRAFT </dt>
4134<dd class="description">Draft quality</dd>
4135<dt>IPP_QUALITY_HIGH </dt>
4136<dd class="description">High quality</dd>
4137<dt>IPP_QUALITY_NORMAL </dt>
4138<dd class="description">Normal quality</dd>
4139</dl>
4140<h3 class="enumeration"><a name="ipp_res_e">ipp_res_e</a></h3>
fab532bb 4141<p class="description">Resolution units</p>
896cc0e8 4142<h4 class="constants">Constants</h4>
4143<dl>
4144<dt>IPP_RES_PER_CM </dt>
4145<dd class="description">Pixels per centimeter</dd>
4146<dt>IPP_RES_PER_INCH </dt>
4147<dd class="description">Pixels per inch</dd>
4148</dl>
4149<h3 class="enumeration"><a name="ipp_state_e">ipp_state_e</a></h3>
fab532bb 4150<p class="description">IPP states</p>
896cc0e8 4151<h4 class="constants">Constants</h4>
4152<dl>
4153<dt>IPP_ATTRIBUTE </dt>
4154<dd class="description">One or more attributes need to be sent/received</dd>
4155<dt>IPP_DATA </dt>
4156<dd class="description">IPP request data needs to be sent/received</dd>
4157<dt>IPP_ERROR </dt>
4158<dd class="description">An error occurred</dd>
4159<dt>IPP_HEADER </dt>
4160<dd class="description">The request header needs to be sent/received</dd>
4161<dt>IPP_IDLE </dt>
4162<dd class="description">Nothing is happening/request completed</dd>
4163</dl>
4164<h3 class="enumeration"><a name="ipp_status_e">ipp_status_e</a></h3>
fab532bb 4165<p class="description">IPP status codes</p>
896cc0e8 4166<h4 class="constants">Constants</h4>
4167<dl>
4168<dt>CUPS_SEE_OTHER </dt>
4169<dd class="description">cups-see-other</dd>
4170<dt>IPP_ATTRIBUTES </dt>
4171<dd class="description">client-error-attributes-or-values-not-supported</dd>
4172<dt>IPP_ATTRIBUTES_NOT_SETTABLE </dt>
4173<dd class="description">client-error-attributes-not-settable</dd>
a1a2e89a 4174<dt>IPP_AUTHENTICATION_CANCELED <span class="info">&nbsp;CUPS 1.5/Mac OS X 10.7&nbsp;</span></dt>
22ac733b 4175<dd class="description">Authentication canceled by user </dd>
896cc0e8 4176<dt>IPP_BAD_REQUEST </dt>
4177<dd class="description">client-error-bad-request</dd>
4178<dt>IPP_CHARSET </dt>
4179<dd class="description">client-error-charset-not-supported</dd>
4180<dt>IPP_COMPRESSION_ERROR </dt>
4181<dd class="description">client-error-compression-error</dd>
4182<dt>IPP_COMPRESSION_NOT_SUPPORTED </dt>
4183<dd class="description">client-error-compression-not-supported</dd>
4184<dt>IPP_CONFLICT </dt>
4185<dd class="description">client-error-conflicting-attributes</dd>
4186<dt>IPP_DEVICE_ERROR </dt>
4187<dd class="description">server-error-device-error</dd>
4188<dt>IPP_DOCUMENT_ACCESS_ERROR </dt>
4189<dd class="description">client-error-document-access-error</dd>
4190<dt>IPP_DOCUMENT_FORMAT </dt>
4191<dd class="description">client-error-document-format-not-supported</dd>
4192<dt>IPP_DOCUMENT_FORMAT_ERROR </dt>
4193<dd class="description">client-error-document-format-error</dd>
4194<dt>IPP_ERROR_JOB_CANCELED </dt>
4195<dd class="description">server-error-job-canceled</dd>
4196<dt>IPP_FORBIDDEN </dt>
4197<dd class="description">client-error-forbidden</dd>
4198<dt>IPP_GONE </dt>
4199<dd class="description">client-error-gone</dd>
4200<dt>IPP_IGNORED_ALL_NOTIFICATIONS </dt>
4201<dd class="description">client-error-ignored-all-notifications</dd>
4202<dt>IPP_IGNORED_ALL_SUBSCRIPTIONS </dt>
4203<dd class="description">client-error-ignored-all-subscriptions</dd>
4204<dt>IPP_INTERNAL_ERROR </dt>
4205<dd class="description">server-error-internal-error</dd>
4206<dt>IPP_MULTIPLE_JOBS_NOT_SUPPORTED </dt>
4207<dd class="description">server-error-multiple-document-jobs-not-supported</dd>
4208<dt>IPP_NOT_ACCEPTING </dt>
4209<dd class="description">server-error-not-accepting-jobs</dd>
4210<dt>IPP_NOT_AUTHENTICATED </dt>
4211<dd class="description">client-error-not-authenticated</dd>
4212<dt>IPP_NOT_AUTHORIZED </dt>
4213<dd class="description">client-error-not-authorized</dd>
4214<dt>IPP_NOT_FOUND </dt>
4215<dd class="description">client-error-not-found</dd>
4216<dt>IPP_NOT_POSSIBLE </dt>
4217<dd class="description">client-error-not-possible</dd>
4218<dt>IPP_OK </dt>
4219<dd class="description">successful-ok</dd>
4220<dt>IPP_OK_BUT_CANCEL_SUBSCRIPTION </dt>
4221<dd class="description">successful-ok-but-cancel-subscription</dd>
4222<dt>IPP_OK_CONFLICT </dt>
4223<dd class="description">successful-ok-conflicting-attributes</dd>
4224<dt>IPP_OK_EVENTS_COMPLETE </dt>
4225<dd class="description">successful-ok-events-complete</dd>
4226<dt>IPP_OK_IGNORED_NOTIFICATIONS </dt>
4227<dd class="description">successful-ok-ignored-notifications</dd>
4228<dt>IPP_OK_IGNORED_SUBSCRIPTIONS </dt>
4229<dd class="description">successful-ok-ignored-subscriptions</dd>
4230<dt>IPP_OK_SUBST </dt>
4231<dd class="description">successful-ok-ignored-or-substituted-attributes</dd>
4232<dt>IPP_OK_TOO_MANY_EVENTS </dt>
4233<dd class="description">successful-ok-too-many-events</dd>
4234<dt>IPP_OPERATION_NOT_SUPPORTED </dt>
4235<dd class="description">server-error-operation-not-supported</dd>
a1a2e89a 4236<dt>IPP_PKI_ERROR <span class="info">&nbsp;CUPS 1.5/Mac OS X 10.7&nbsp;</span></dt>
22ac733b 4237<dd class="description">Error negotiating a secure connection </dd>
896cc0e8 4238<dt>IPP_PRINTER_BUSY </dt>
4239<dd class="description">server-error-busy</dd>
4240<dt>IPP_PRINTER_IS_DEACTIVATED </dt>
4241<dd class="description">server-error-printer-is-deactivated</dd>
4242<dt>IPP_PRINT_SUPPORT_FILE_NOT_FOUND </dt>
4243<dd class="description">client-error-print-support-file-not-found</dd>
4244<dt>IPP_REQUEST_ENTITY </dt>
4245<dd class="description">client-error-request-entity-too-large</dd>
4246<dt>IPP_REQUEST_VALUE </dt>
4247<dd class="description">client-error-request-value-too-long</dd>
4248<dt>IPP_SERVICE_UNAVAILABLE </dt>
4249<dd class="description">server-error-service-unavailable</dd>
4250<dt>IPP_TEMPORARY_ERROR </dt>
4251<dd class="description">server-error-temporary-error</dd>
4252<dt>IPP_TIMEOUT </dt>
4253<dd class="description">client-error-timeout</dd>
4254<dt>IPP_TOO_MANY_SUBSCRIPTIONS </dt>
4255<dd class="description">client-error-too-many-subscriptions</dd>
22ac733b 4256<dt>IPP_UPGRADE_REQUIRED </dt>
4257<dd class="description">TLS upgrade required</dd>
896cc0e8 4258<dt>IPP_URI_SCHEME </dt>
4259<dd class="description">client-error-uri-scheme-not-supported</dd>
4260<dt>IPP_VERSION_NOT_SUPPORTED </dt>
4261<dd class="description">server-error-version-not-supported</dd>
4262</dl>
4263<h3 class="enumeration"><a name="ipp_tag_e">ipp_tag_e</a></h3>
fab532bb 4264<p class="description">Format tags for attributes</p>
896cc0e8 4265<h4 class="constants">Constants</h4>
4266<dl>
4267<dt>IPP_TAG_ADMINDEFINE </dt>
4268<dd class="description">Admin-defined value</dd>
4269<dt>IPP_TAG_BEGIN_COLLECTION </dt>
4270<dd class="description">Beginning of collection value</dd>
4271<dt>IPP_TAG_BOOLEAN </dt>
4272<dd class="description">Boolean value</dd>
4273<dt>IPP_TAG_CHARSET </dt>
4274<dd class="description">Character set value</dd>
4275<dt>IPP_TAG_COPY </dt>
4276<dd class="description">Bitflag for copied attribute values</dd>
4277<dt>IPP_TAG_DATE </dt>
4278<dd class="description">Date/time value</dd>
4279<dt>IPP_TAG_DEFAULT </dt>
4280<dd class="description">Default value</dd>
4281<dt>IPP_TAG_DELETEATTR </dt>
4282<dd class="description">Delete-attribute value</dd>
4283<dt>IPP_TAG_END </dt>
4284<dd class="description">End-of-attributes</dd>
4285<dt>IPP_TAG_END_COLLECTION </dt>
4286<dd class="description">End of collection value</dd>
4287<dt>IPP_TAG_ENUM </dt>
4288<dd class="description">Enumeration value</dd>
4289<dt>IPP_TAG_EVENT_NOTIFICATION </dt>
4290<dd class="description">Event group</dd>
4291<dt>IPP_TAG_INTEGER </dt>
4292<dd class="description">Integer value</dd>
4293<dt>IPP_TAG_JOB </dt>
4294<dd class="description">Job group</dd>
4295<dt>IPP_TAG_KEYWORD </dt>
4296<dd class="description">Keyword value</dd>
4297<dt>IPP_TAG_LANGUAGE </dt>
4298<dd class="description">Language value</dd>
4299<dt>IPP_TAG_MASK </dt>
4300<dd class="description">Mask for copied attribute values</dd>
4301<dt>IPP_TAG_MEMBERNAME </dt>
4302<dd class="description">Collection member name value</dd>
4303<dt>IPP_TAG_MIMETYPE </dt>
4304<dd class="description">MIME media type value</dd>
4305<dt>IPP_TAG_NAME </dt>
4306<dd class="description">Name value</dd>
4307<dt>IPP_TAG_NAMELANG </dt>
4308<dd class="description">Name-with-language value</dd>
4309<dt>IPP_TAG_NOTSETTABLE </dt>
4310<dd class="description">Not-settable value</dd>
4311<dt>IPP_TAG_NOVALUE </dt>
4312<dd class="description">No-value value</dd>
4313<dt>IPP_TAG_OPERATION </dt>
4314<dd class="description">Operation group</dd>
4315<dt>IPP_TAG_PRINTER </dt>
4316<dd class="description">Printer group</dd>
4317<dt>IPP_TAG_RANGE </dt>
4318<dd class="description">Range value</dd>
4319<dt>IPP_TAG_RESOLUTION </dt>
4320<dd class="description">Resolution value</dd>
4321<dt>IPP_TAG_STRING </dt>
4322<dd class="description">Octet string value</dd>
4323<dt>IPP_TAG_SUBSCRIPTION </dt>
4324<dd class="description">Subscription group</dd>
4325<dt>IPP_TAG_TEXT </dt>
4326<dd class="description">Text value</dd>
4327<dt>IPP_TAG_TEXTLANG </dt>
4328<dd class="description">Text-with-language value</dd>
4329<dt>IPP_TAG_UNKNOWN </dt>
4330<dd class="description">Unknown value</dd>
4331<dt>IPP_TAG_UNSUPPORTED_GROUP </dt>
4332<dd class="description">Unsupported attributes group</dd>
4333<dt>IPP_TAG_UNSUPPORTED_VALUE </dt>
4334<dd class="description">Unsupported value</dd>
4335<dt>IPP_TAG_URI </dt>
4336<dd class="description">URI value</dd>
4337<dt>IPP_TAG_URISCHEME </dt>
4338<dd class="description">URI scheme value</dd>
4339<dt>IPP_TAG_ZERO </dt>
4340<dd class="description">Zero tag - used for separators</dd>
4341</dl>
4342</div>
4343</body>
4344</html>