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ef416fc2 255<!--
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256 "$Id: api-httpipp.header 7258 2008-01-28 00:15:05Z mike $"
257
258 HTTP and IPP API header for the Common UNIX Printing System (CUPS).
259
260 Copyright 2007-2008 by Apple Inc.
261 Copyright 1997-2006 by Easy Software Products, all rights reserved.
262
263 These coded instructions, statements, and computer programs are the
264 property of Apple Inc. and are protected by Federal copyright
265 law. Distribution and use rights are outlined in the file "LICENSE.txt"
266 which should have been included with this file. If this file is
267 file is missing or damaged, see the license at "http://www.cups.org/".
268-->
269
270<h1 class="title">HTTP and IPP APIs</h1>
271
272<div class='summary'><table summary='General Information'>
273<thead>
274<tr>
275 <th>Header</th>
276 <th>cups/cups.h</th>
277</tr>
278</thead>
279<tbody>
280<tr>
281 <th>Library</th>
282 <td>-lcups</td>
283</tr>
284<tr>
285 <th>See Also</th>
286 <td>Programming: <a href='api-overview.html'>Introduction to CUPS Programming</a><br>
287 Programming: <a href='api-cups.html'>CUPS API</a><br>
288 References: <a href='spec-ipp.html'>CUPS Implementation of IPP</a></td>
289</tr>
290</tbody>
291</table></div>
292<h2 class="title">Contents</h2>
293<ul class="contents">
294</li>
295<li><a href="#OVERVIEW">Overview</a><ul class="subcontents">
296<li><a href="#CREATING_URI_STRINGS">Creating URI Strings</a></li>
297<li><a href="#SENDING_REQUESTS_WITH_FILES">Sending Requests with Files</a></li>
298<li><a href="#ASYNCHRONOUS_REQUEST_PROCESSING">Asynchronous Request Processing</a></li>
299</ul></li>
300<li><a href="#FUNCTIONS">Functions</a><ul class="code">
301<li><a href="#cupsDoAuthentication" title="Authenticate a request.">cupsDoAuthentication</a></li>
302<li><a href="#cupsDoFileRequest" title="Do an IPP request with a file.">cupsDoFileRequest</a></li>
303<li><a href="#cupsDoIORequest" title="Do an IPP request with file descriptors.">cupsDoIORequest</a></li>
304<li><a href="#cupsDoRequest" title="Do an IPP request.">cupsDoRequest</a></li>
305<li><a href="#cupsEncodeOptions" title="Encode printer options into IPP attributes.">cupsEncodeOptions</a></li>
306<li><a href="#cupsEncodeOptions2" title="Encode printer options into IPP attributes for a group.">cupsEncodeOptions2</a></li>
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307<li><a href="#cupsGetDevices" title="Get available printer devices.">cupsGetDevices</a></li>
308<li><a href="#cupsGetFd" title="Get a file from the server.">cupsGetFd</a></li>
309<li><a href="#cupsGetFile" title="Get a file from the server.">cupsGetFile</a></li>
5a738aea 310<li><a href="#cupsGetResponse" title="Get a response to an IPP request.">cupsGetResponse</a></li>
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311<li><a href="#cupsPutFd" title="Put a file on the server.">cupsPutFd</a></li>
312<li><a href="#cupsPutFile" title="Put a file on the server.">cupsPutFile</a></li>
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313<li><a href="#cupsReadResponseData" title="Read additional data after the IPP response.">cupsReadResponseData</a></li>
314<li><a href="#cupsSendRequest" title="Send an IPP request.">cupsSendRequest</a></li>
315<li><a href="#cupsWriteRequestData" title="Write additional data after an IPP request.">cupsWriteRequestData</a></li>
316<li><a href="#httpAddrAny" title="Check for the &quot;any&quot; address.">httpAddrAny</a></li>
317<li><a href="#httpAddrEqual" title="Compare two addresses.">httpAddrEqual</a></li>
318<li><a href="#httpAddrLength" title="Return the length of the address in bytes.">httpAddrLength</a></li>
319<li><a href="#httpAddrLocalhost" title="Check for the local loopback address.">httpAddrLocalhost</a></li>
320<li><a href="#httpAddrLookup" title="Lookup the hostname associated with the address.">httpAddrLookup</a></li>
321<li><a href="#httpAddrString" title="Convert an address to a numeric string.">httpAddrString</a></li>
322<li><a href="#httpAssembleURI" title="Assemble a uniform resource identifier from its
323components.">httpAssembleURI</a></li>
324<li><a href="#httpAssembleURIf" title="Assemble a uniform resource identifier from its
325components with a formatted resource.">httpAssembleURIf</a></li>
326<li><a href="#httpBlocking" title="Set blocking/non-blocking behavior on a connection.">httpBlocking</a></li>
327<li><a href="#httpCheck" title="Check to see if there is a pending response from the server.">httpCheck</a></li>
328<li><a href="#httpClearCookie" title="Clear the cookie value(s).">httpClearCookie</a></li>
329<li><a href="#httpClearFields" title="Clear HTTP request fields.">httpClearFields</a></li>
330<li><a href="#httpClose" title="Close an HTTP connection...">httpClose</a></li>
331<li><a href="#httpConnect" title="Connect to a HTTP server.">httpConnect</a></li>
332<li><a href="#httpConnectEncrypt" title="Connect to a HTTP server using encryption.">httpConnectEncrypt</a></li>
333<li><a href="#httpDecode64" title="Base64-decode a string.">httpDecode64</a></li>
334<li><a href="#httpDecode64_2" title="Base64-decode a string.">httpDecode64_2</a></li>
335<li><a href="#httpDelete" title="Send a DELETE request to the server.">httpDelete</a></li>
336<li><a href="#httpEncode64" title="Base64-encode a string.">httpEncode64</a></li>
337<li><a href="#httpEncode64_2" title="Base64-encode a string.">httpEncode64_2</a></li>
338<li><a href="#httpEncryption" title="Set the required encryption on the link.">httpEncryption</a></li>
339<li><a href="#httpError" title="Get the last error on a connection.">httpError</a></li>
340<li><a href="#httpFlush" title="Flush data from a HTTP connection.">httpFlush</a></li>
341<li><a href="#httpFlushWrite" title="Flush data in write buffer.">httpFlushWrite</a></li>
342<li><a href="#httpGet" title="Send a GET request to the server.">httpGet</a></li>
343<li><a href="#httpGetAuthString" title="Get the current authorization string.">httpGetAuthString</a></li>
344<li><a href="#httpGetBlocking" title="Get the blocking/non-block state of a connection.">httpGetBlocking</a></li>
345<li><a href="#httpGetCookie" title="Get any cookie data from the response.">httpGetCookie</a></li>
346<li><a href="#httpGetDateString" title="Get a formatted date/time string from a time value.">httpGetDateString</a></li>
347<li><a href="#httpGetDateString2" title="Get a formatted date/time string from a time value.">httpGetDateString2</a></li>
348<li><a href="#httpGetDateTime" title="Get a time value from a formatted date/time string.">httpGetDateTime</a></li>
349<li><a href="#httpGetFd" title="Get the file descriptor associated with a connection.">httpGetFd</a></li>
350<li><a href="#httpGetField" title="Get a field value from a request/response.">httpGetField</a></li>
351<li><a href="#httpGetHostByName" title="Lookup a hostname or IPv4 address, and return
352address records for the specified name.">httpGetHostByName</a></li>
353<li><a href="#httpGetHostname" title="Get the FQDN for the connection or local system.">httpGetHostname</a></li>
354<li><a href="#httpGetLength" title="Get the amount of data remaining from the
355content-length or transfer-encoding fields.">httpGetLength</a></li>
356<li><a href="#httpGetLength2" title="Get the amount of data remaining from the
357content-length or transfer-encoding fields.">httpGetLength2</a></li>
358<li><a href="#httpGetStatus" title="Get the status of the last HTTP request.">httpGetStatus</a></li>
359<li><a href="#httpGetSubField" title="Get a sub-field value.">httpGetSubField</a></li>
360<li><a href="#httpGetSubField2" title="Get a sub-field value.">httpGetSubField2</a></li>
361<li><a href="#httpGets" title="Get a line of text from a HTTP connection.">httpGets</a></li>
362<li><a href="#httpHead" title="Send a HEAD request to the server.">httpHead</a></li>
363<li><a href="#httpInitialize" title="Initialize the HTTP interface library and set the
364default HTTP proxy (if any).">httpInitialize</a></li>
365<li><a href="#httpMD5" title="Compute the MD5 sum of the username:group:password.">httpMD5</a></li>
366<li><a href="#httpMD5Final" title="Combine the MD5 sum of the username, group, and password
367with the server-supplied nonce value, method, and
368request-uri.">httpMD5Final</a></li>
369<li><a href="#httpMD5String" title="Convert an MD5 sum to a character string.">httpMD5String</a></li>
370<li><a href="#httpOptions" title="Send an OPTIONS request to the server.">httpOptions</a></li>
371<li><a href="#httpPost" title="Send a POST request to the server.">httpPost</a></li>
372<li><a href="#httpPut" title="Send a PUT request to the server.">httpPut</a></li>
373<li><a href="#httpRead" title="Read data from a HTTP connection.">httpRead</a></li>
374<li><a href="#httpRead2" title="Read data from a HTTP connection.">httpRead2</a></li>
375<li><a href="#httpReconnect" title="Reconnect to a HTTP server.">httpReconnect</a></li>
376<li><a href="#httpSeparate" title="Separate a Universal Resource Identifier into its
377components.">httpSeparate</a></li>
378<li><a href="#httpSeparate2" title="Separate a Universal Resource Identifier into its
379components.">httpSeparate2</a></li>
380<li><a href="#httpSeparateURI" title="Separate a Universal Resource Identifier into its
381components.">httpSeparateURI</a></li>
382<li><a href="#httpSetAuthString" title="Set the current authorization string.">httpSetAuthString</a></li>
383<li><a href="#httpSetCookie" title="Set the cookie value(s)...">httpSetCookie</a></li>
384<li><a href="#httpSetExpect" title="Set the Expect: header in a request.">httpSetExpect</a></li>
385<li><a href="#httpSetField" title="Set the value of an HTTP header.">httpSetField</a></li>
386<li><a href="#httpSetLength" title="Set the content-length and content-encoding.">httpSetLength</a></li>
387<li><a href="#httpStatus" title="Return a short string describing a HTTP status code.">httpStatus</a></li>
388<li><a href="#httpTrace" title="Send an TRACE request to the server.">httpTrace</a></li>
389<li><a href="#httpUpdate" title="Update the current HTTP state for incoming data.">httpUpdate</a></li>
390<li><a href="#httpWait" title="Wait for data available on a connection.">httpWait</a></li>
391<li><a href="#httpWrite" title="Write data to a HTTP connection.">httpWrite</a></li>
392<li><a href="#httpWrite2" title="Write data to a HTTP connection.">httpWrite2</a></li>
393<li><a href="#ippAddBoolean" title="Add a boolean attribute to an IPP message.">ippAddBoolean</a></li>
394<li><a href="#ippAddBooleans" title="Add an array of boolean values.">ippAddBooleans</a></li>
395<li><a href="#ippAddCollection" title="Add a collection value.">ippAddCollection</a></li>
396<li><a href="#ippAddCollections" title="Add an array of collection values.">ippAddCollections</a></li>
397<li><a href="#ippAddDate" title="Add a date attribute to an IPP message.">ippAddDate</a></li>
398<li><a href="#ippAddInteger" title="Add a integer attribute to an IPP message.">ippAddInteger</a></li>
399<li><a href="#ippAddIntegers" title="Add an array of integer values.">ippAddIntegers</a></li>
400<li><a href="#ippAddOctetString" title="Add an octetString value to an IPP message.">ippAddOctetString</a></li>
401<li><a href="#ippAddRange" title="Add a range of values to an IPP message.">ippAddRange</a></li>
402<li><a href="#ippAddRanges" title="Add ranges of values to an IPP message.">ippAddRanges</a></li>
403<li><a href="#ippAddResolution" title="Add a resolution value to an IPP message.">ippAddResolution</a></li>
404<li><a href="#ippAddResolutions" title="Add resolution values to an IPP message.">ippAddResolutions</a></li>
405<li><a href="#ippAddSeparator" title="Add a group separator to an IPP message.">ippAddSeparator</a></li>
406<li><a href="#ippAddString" title="Add a language-encoded string to an IPP message.">ippAddString</a></li>
407<li><a href="#ippAddStrings" title="Add language-encoded strings to an IPP message.">ippAddStrings</a></li>
408<li><a href="#ippDateToTime" title="Convert from RFC 1903 Date/Time format to UNIX time
409in seconds.">ippDateToTime</a></li>
410<li><a href="#ippDelete" title="Delete an IPP message.">ippDelete</a></li>
411<li><a href="#ippDeleteAttribute" title="Delete a single attribute in an IPP message.">ippDeleteAttribute</a></li>
412<li><a href="#ippErrorString" title="Return a name for the given status code.">ippErrorString</a></li>
413<li><a href="#ippErrorValue" title="Return a status code for the given name.">ippErrorValue</a></li>
414<li><a href="#ippFindAttribute" title="Find a named attribute in a request...">ippFindAttribute</a></li>
415<li><a href="#ippFindNextAttribute" title="Find the next named attribute in a request...">ippFindNextAttribute</a></li>
416<li><a href="#ippLength" title="Compute the length of an IPP message.">ippLength</a></li>
417<li><a href="#ippNew" title="Allocate a new IPP message.">ippNew</a></li>
418<li><a href="#ippNewRequest" title="Allocate a new IPP request message.">ippNewRequest</a></li>
419<li><a href="#ippOpString" title="Return a name for the given operation id.">ippOpString</a></li>
420<li><a href="#ippOpValue" title="Return an operation id for the given name.">ippOpValue</a></li>
421<li><a href="#ippPort" title="Return the default IPP port number.">ippPort</a></li>
422<li><a href="#ippRead" title="Read data for an IPP message from a HTTP connection.">ippRead</a></li>
423<li><a href="#ippReadFile" title="Read data for an IPP message from a file.">ippReadFile</a></li>
424<li><a href="#ippReadIO" title="Read data for an IPP message.">ippReadIO</a></li>
425<li><a href="#ippSetPort" title="Set the default port number.">ippSetPort</a></li>
426<li><a href="#ippTimeToDate" title="Convert from UNIX time to RFC 1903 format.">ippTimeToDate</a></li>
427<li><a href="#ippWrite" title="Write data for an IPP message to a HTTP connection.">ippWrite</a></li>
428<li><a href="#ippWriteFile" title="Write data for an IPP message to a file.">ippWriteFile</a></li>
429<li><a href="#ippWriteIO" title="Write data for an IPP message.">ippWriteIO</a></li>
430</ul>
431<li><a href="#TYPES">Data Types</a><ul class="code">
432 <li><a href="#http_addrlist_t" title="Socket address list, which is
433used to enumerate all of the
434addresses that are associated
435with a hostname. ">http_addrlist_t</a></li>
436 <li><a href="#http_auth_t" title="HTTP authentication types">http_auth_t</a></li>
437 <li><a href="#http_encoding_t" title="HTTP transfer encoding values">http_encoding_t</a></li>
438 <li><a href="#http_encryption_t" title="HTTP encryption values">http_encryption_t</a></li>
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439 <li><a href="#http_field_t" title="HTTP field names">http_field_t</a></li>
440 <li><a href="#http_keepalive_t" title="Types and structures...">http_keepalive_t</a></li>
441 <li><a href="#http_status_t" title="HTTP status codes">http_status_t</a></li>
5a738aea 442 <li><a href="#http_t" title="HTTP connection type">http_t</a></li>
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443 <li><a href="#http_uri_coding_t" title="HTTP version numbers">http_uri_coding_t</a></li>
444 <li><a href="#http_uri_status_t" title="URI en/decode flags">http_uri_status_t</a></li>
445 <li><a href="#http_version_t" title="Socket address union, which
446makes using IPv6 and other
447address types easier and
448more portable. ">http_version_t</a></li>
5a738aea 449 <li><a href="#ipp_attribute_t" title="Attribute">ipp_attribute_t</a></li>
79e1d494 450 <li><a href="#ipp_finish_t" title="Orientation...">ipp_finish_t</a></li>
5a738aea 451 <li><a href="#ipp_iocb_t" title="IPP IO Callback Function ">ipp_iocb_t</a></li>
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452 <li><a href="#ipp_jstate_t" title="Printer States....">ipp_jstate_t</a></li>
453 <li><a href="#ipp_op_t" title="Old names for the operations">ipp_op_t</a></li>
454 <li><a href="#ipp_orient_t" title="Qualities...">ipp_orient_t</a></li>
455 <li><a href="#ipp_pstate_t" title="IPP states...">ipp_pstate_t</a></li>
456 <li><a href="#ipp_quality_t" title="Job States....">ipp_quality_t</a></li>
5a738aea 457 <li><a href="#ipp_request_t" title="Request Header">ipp_request_t</a></li>
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458 <li><a href="#ipp_res_t" title="Types and structures...">ipp_res_t</a></li>
459 <li><a href="#ipp_state_t" title="IPP operations...">ipp_state_t</a></li>
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460 <li><a href="#ipp_t" title="Attribute Value">ipp_t</a></li>
461 <li><a href="#ipp_uchar_t" title="IPP status codes...">ipp_uchar_t</a></li>
79e1d494 462 <li><a href="#ipp_tag_t" title="Format tags for attributes...">ipp_tag_t</a></li>
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463 <li><a href="#ipp_value_t" title="New in CUPS 1.1.19">ipp_value_t</a></li>
464</ul></li>
465<li><a href="#STRUCTURES">Structures</a><ul class="code">
466 <li><a href="#http_addrlist_s" title="Socket address list, which is
467used to enumerate all of the
468addresses that are associated
469with a hostname. ">http_addrlist_s</a></li>
470 <li><a href="#ipp_attribute_s" title="Attribute">ipp_attribute_s</a></li>
471 <li><a href="#ipp_s" title="IPP Request/Response/Notification">ipp_s</a></li>
472</ul></li>
473<li><a href="#UNIONS">Unions</a><ul class="code">
474 <li><a href="#ipp_request_u" title="Request Header">ipp_request_u</a></li>
475 <li><a href="#ipp_value_u" title="New in CUPS 1.1.19">ipp_value_u</a></li>
476</ul></li>
477<li><a href="#ENUMERATIONS">Constants</a><ul class="code">
478 <li><a href="#http_auth_e" title="HTTP authentication types">http_auth_e</a></li>
479 <li><a href="#http_encoding_e" title="HTTP transfer encoding values">http_encoding_e</a></li>
480 <li><a href="#http_encryption_e" title="HTTP encryption values">http_encryption_e</a></li>
481 <li><a href="#http_field_e" title="HTTP field names">http_field_e</a></li>
482 <li><a href="#http_keepalive_e" title="Types and structures...">http_keepalive_e</a></li>
483 <li><a href="#http_state_e" title="">http_state_e</a></li>
484 <li><a href="#http_status_e" title="HTTP status codes">http_status_e</a></li>
485 <li><a href="#http_uri_coding_e" title="">http_uri_coding_e</a></li>
486 <li><a href="#http_uri_status_e" title="">http_uri_status_e</a></li>
487 <li><a href="#http_version_e" title="">http_version_e</a></li>
488 <li><a href="#ipp_finish_e" title="">ipp_finish_e</a></li>
489 <li><a href="#ipp_jstate_e" title="">ipp_jstate_e</a></li>
490 <li><a href="#ipp_op_e" title="">ipp_op_e</a></li>
491 <li><a href="#ipp_orient_e" title="">ipp_orient_e</a></li>
492 <li><a href="#ipp_pstate_e" title="">ipp_pstate_e</a></li>
493 <li><a href="#ipp_quality_e" title="">ipp_quality_e</a></li>
494 <li><a href="#ipp_res_e" title="Types and structures...">ipp_res_e</a></li>
495 <li><a href="#ipp_state_e" title="">ipp_state_e</a></li>
496 <li><a href="#ipp_status_e" title="IPP status codes...">ipp_status_e</a></li>
497 <li><a href="#ipp_tag_e" title="Format tags for attributes...">ipp_tag_e</a></li>
498</ul></li>
499</ul>
500<!--
501 "$Id: api-httpipp.shtml 7258 2008-01-28 00:15:05Z mike $"
ef416fc2 502
503 HTTP and IPP API introduction for the Common UNIX Printing System (CUPS).
504
5a738aea 505 Copyright 2007-2008 by Apple Inc.
bc44d920 506 Copyright 1997-2006 by Easy Software Products, all rights reserved.
ef416fc2 507
508 These coded instructions, statements, and computer programs are the
bc44d920 509 property of Apple Inc. and are protected by Federal copyright
510 law. Distribution and use rights are outlined in the file "LICENSE.txt"
511 which should have been included with this file. If this file is
512 file is missing or damaged, see the license at "http://www.cups.org/".
ef416fc2 513-->
514
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515<h2 class='title'><a name='OVERVIEW'>Overview</a></h2>
516
517<p>The CUPS HTTP and IPP APIs provide low-level access to the HTTP and IPP
518protocols and CUPS scheduler. They are typically used by monitoring and
519administration programs to perform specific functions not supported by the
520high-level CUPS API functions.</p>
521
522<p>The HTTP APIs use an opaque structure called
523<a href='#http_t'><code>http_t</code></a> to manage connections to
524a particular HTTP or IPP server. The
525<a href='#httpConnectEncrypt'><code>httpConnectEncrypt</code></a> function is
526used to create an instance of this structure for a particular server.
527The constant <code>CUPS_HTTP_DEFAULT</code> can be used with all of the
528<code>cups</code> functions to refer to the default CUPS server - the functions
529create a per-thread <a href='#http_t'><code>http_t</code></a> as needed.</p>
530
531<p>The IPP APIs use two structures for requests (messages sent to the CUPS
532scheduler) and responses (messages sent back to your application from the
533scheduler). The <a href='#ipp_t'><code>ipp_t</code></a> structure holds a
534complete request or response and is allocated using the
535<a href='#ippNew'><code>ippNew</code></a> or
536<a href='#ippNewRequest'><code>ippNewRequest</code></a> functions and
537freed using the <a href='#ippDelete'><code>ippDelete</code></a> function.</p>
538
539<p>The second structure is called
540<a href='#ipp_attribute_t'><code>ipp_attribute_t</code></a> and holds a
541single IPP attribute which consists of a group tag (<code>group_tag</code>), a
542value type tag (<code>value_tag</code>), the attribute name (<code>name</code>),
543and 1 or more values (<code>values[]</code>). Attributes are added to an
544<a href='#ipp_t'><code>ipp_t</code></a> structure using one of the
545<code>ippAdd</code> functions. For example, use
546<a href='#ippAddString'><code>ippAddString</code></a> to add a
547"requesting-user-name" string attribute to a request:</p>
548
549<pre class='example'>
550<a href='#ipp_t'>ipp_t</a> *request = <a href='#ippNewRequest'>ippNewRequest</a>(IPP_GET_JOBS);
551
552<a href='#ippAddString'>ippAddString</a>(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
553 NULL, cupsUser());
554</pre>
ef416fc2 555
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556<p>Once you have created an IPP request, use the <code>cups</code>
557functions to send the request to and read the response from the server.
558For example, the <a href='#cupsDoRequest'><code>cupsDoRequest</code></a>
559function can be used for simple query operations that do not involve files:</p>
ef416fc2 560
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561<pre class='example'>
562#include &lt;cups/cups.h&gt;
ef416fc2 563
ef416fc2 564
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565<a href='#ipp_t'>ipp_t</a> *<a name='get_jobs'>get_jobs</a>(void)
566{
567 <a href='#ipp_t'>ipp_t</a> *request = <a href='#ippNewRequest'>ippNewRequest</a>(IPP_GET_JOBS);
ef416fc2 568
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569 <a href='#ippAddString'>ippAddString</a>(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
570 NULL, cupsUser());
571
572 return (<a href='#cupsDoRequest'>cupsDoRequest</a>(CUPS_HTTP_DEFAULT, request, "/"));
573}
ef416fc2 574</pre>
575
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576<p>The <a href='#cupsDoRequest'><code>cupsDoRequest</code></a> function frees
577the request structure and returns an IPP response structure or NULL pointer if
578the request could not be sent to the server. Once you have a response from
579the server, you can either use the
580<a href='#ippFindAttribute'><code>ippFindAttribute</code></a> and
581<a href='#ippFindNextAttribute'><code>ippFindNextAttribute</code></a> functions
582to find specific attributes, for example:</p>
ef416fc2 583
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584<pre class='example'>
585<a href='#ipp_t'>ipp_t</a> *response;
586<a href='#ipp_attribute_t'>ipp_attribute_t</a> *attr;
bc44d920 587
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588attr = <a href='#ippFindAttribute'>ippFindAttribute</a>(response, "printer-state", IPP_TAG_ENUM);
589</pre>
590
591<p>You can also walk the list of attributes with a simple <code>for</code> loop
592like this:</p>
593
594<pre class='example'>
595<a href='#ipp_t'>ipp_t</a> *response;
596<a href='#ipp_attribute_t'>ipp_attribute_t</a> *attr;
597
598for (attr = response->attrs; attr != NULL; attr = attr->next)
599 if (attr->name == NULL)
600 puts("--SEPARATOR--");
601 else
602 puts(attr->name);
603</pre>
604
605<p>The <code>for</code> loop approach is normally used when collecting
606attributes for multiple objects (jobs, printers, etc.) in a response. Attributes
607with <code>NULL</code> names indicate a separator between the attributes of
608each object. For example, the following code will list the jobs returned from
609our previous <a href='#get_jobs'><code>get_jobs</code></a> example code:</p>
610
611<pre class='example'>
612<a href='#ipp_t'>ipp_t</a> *response = <a href='#get_jobs'>get_jobs</a>();
613
614if (response != NULL)
615{
616 <a href='#ipp_attribute_t'>ipp_attribute_t</a> *attr;
617 int job_id = 0;
618 char *job_name = NULL;
619 char *job_originating_user_name = NULL;
620
621 puts("Job ID Owner Title");
622 puts("------ ---------------- ---------------------------------");
623
624 for (attr = response->attrs; attr != NULL; attr = attr->next)
625 {
626 /* Attributes without names are separators between jobs */
627 if (attr->name == NULL)
628 {
629 if (job_id > 0 &amp;&amp; job_name != NULL &amp;&amp; job_originating_user_name != NULL)
630 printf("%5d %-16s %s\n", job_id, job_originating_user_name, job_name);
631
632 job_id = 0;
633 job_name = NULL;
634 job_originating_user_name = NULL;
635 continue;
636 }
637 else if (!strcmp(attr->name, "job-id") &amp;&amp; attr->value_tag == IPP_TAG_INTEGER)
638 job_id = attr->values[0].integer;
639 else if (!strcmp(attr->name, "job-name") &amp;&amp; attr->value_tag == IPP_TAG_NAME)
640 job_name = attr->values[0].string.text;
641 else if (!strcmp(attr->name, "job-originating-user-name") &amp;&amp;
642 attr->value_tag == IPP_TAG_NAME)
643 job_originating_user_name = attr->values[0].string.text;
644 }
645
646 if (job_id > 0 &amp;&amp; job_name != NULL &amp;&amp; job_originating_user_name != NULL)
647 printf("%5d %-16s %s\n", job_id, job_originating_user_name, job_name);
648}
649</pre>
650
651<h3><a name='CREATING_URI_STRINGS'>Creating URI Strings</a></h3>
652
653<p>To ensure proper encoding, the
654<a href='#httpAssembleURIf'><code>httpAssembleURIf</code></a> function must be
655used to format a "printer-uri" string for all printer-based requests:</p>
656
657<pre class='example'>
658const char *name = "Foo";
659char uri[1024];
660<a href='#ipp_t'>ipp_t</a> *request;
661
662<a href='#httpAssembleURIf'>httpAssembleURIf</a>(HTTP_URI_CODING_ALL, uri, sizeof(uri), "ipp", NULL, cupsServer(),
663 ippPort(), "/printers/%s", name);
664<a href='#ippAddString'>ippAddString</a>(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
665</pre>
666
667<h3><a name='SENDING_REQUESTS_WITH_FILES'>Sending Requests with Files</a></h3>
668
669<p>The <a href='#cupsDoFileRequest'><code>cupsDoFileRequest</code></a> and
670<a href='#cupsDoIORequest'><code>cupsDoIORequest</code></a> functions are
671used for requests involving files. The
672<a href='#cupsDoFileRequest'><code>cupsDoFileRequest</code></a> function
673attaches the named file to a request and is typically used when sending a print
674file or changing a printer's PPD file:</p>
675
676<pre class='example'>
677const char *filename = "/usr/share/cups/data/testprint.ps";
678const char *name = "Foo";
679char uri[1024];
680char resource[1024];
681<a href='#ipp_t'>ipp_t</a> *request = <a href='#ippNewRequest'>ippNewRequest</a>(IPP_PRINT_JOB);
682<a href='#ipp_t'>ipp_t</a> *response;
683
684/* Use httpAssembleURIf for the printer-uri string */
685<a href='#httpAssembleURIf'>httpAssembleURIf</a>(HTTP_URI_CODING_ALL, uri, sizeof(uri), "ipp", NULL, cupsServer(),
686 ippPort(), "/printers/%s", name);
687<a href='#ippAddString'>ippAddString</a>(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
688<a href='#ippAddString'>ippAddString</a>(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
689 NULL, cupsUser());
690<a href='#ippAddString'>ippAddString</a>(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "job-name",
691 NULL, "testprint.ps");
692
693/* Use snprintf for the resource path */
694snprintf(resource, sizeof(resource), "/printers/%s", name);
695
696response = <a href='#cupsDoFileRequest'>cupsDoFileRequest</a>(CUPS_HTTP_DEFAULT, request, resource, filename);
697</pre>
698
699<p>The <a href='#cupsDoIORequest'><code>cupsDoIORequest</code></a> function
700optionally attaches a file to the request and optionally saves a file in the
701response from the server. It is used when using a pipe for the request
702attachment or when using a request that returns a file, currently only
703<code>CUPS_GET_DOCUMENT</code> and <code>CUPS_GET_PPD</code>. For example,
704the following code will download the PPD file for the sample HP LaserJet
705printer driver:</p>
706
707<pre class='example'>
708char tempfile[1024];
709int tempfd;
710<a href='#ipp_t'>ipp_t</a> *request = <a href='#ippNewRequest'>ippNewRequest</a>(CUPS_GET_PPD);
711<a href='#ipp_t'>ipp_t</a> *response;
712
713<a href='#ippAddString'>ippAddString</a>(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "ppd-name",
714 NULL, "laserjet.ppd");
715
716tempfd = cupsTempFd(tempfile, sizeof(tempfile));
717
718response = <a href='#cupsDoIORequest'>cupsDoIORequest</a>(CUPS_HTTP_DEFAULT, request, "/", -1, tempfd);
719</pre>
720
721<p>The example passes <code>-1</code> for the input file descriptor to specify
722that no file is to be attached to the request. The PPD file attached to the
723response is written to the temporary file descriptor we created using the
724<code>cupsTempFd</code> function.</p>
725
726<h3><a name='ASYNCHRONOUS_REQUEST_PROCESSING'>Asynchronous Request Processing</a></h3>
727
728<p>The <a href='#cupsSendRequest'><code>cupsSendRequest</code></a> and
729<a href='#cupsGetResponse'><code>cupsGetResponse</code></a> support
730asynchronous communications with the server. Unlike the other request
731functions, the IPP request is not automatically freed, so remember to
732free your request with the <a href='#ippDelete'><code>ippDelete</code></a>
733function.</p>
734
735<p>File data is attached to the request using the
736<a href='#cupsWriteRequestData'><code>cupsWriteRequestData</code></a>
737function, while file data returned from the server is read using the
738<a href='#cupsReadResponseData'><code>cupsReadResponseData</code></a>
739function. We can rewrite the previous <code>CUPS_GET_PPD</code> example
740to use the asynchronous functions quite easily:</p>
741
742<pre class='example'>
743char tempfile[1024];
744int tempfd;
745<a href='#ipp_t'>ipp_t</a> *request = <a href='#ippNewRequest'>ippNewRequest</a>(CUPS_GET_PPD);
746<a href='#ipp_t'>ipp_t</a> *response;
747
748<a href='#ippAddString'>ippAddString</a>(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "ppd-name",
749 NULL, "laserjet.ppd");
750
751tempfd = cupsTempFd(tempfile, sizeof(tempfile));
752
753if (<a href='#cupsSendRequest'>cupsSendRequest</a>(CUPS_HTTP_DEFAULT, request, "/") == HTTP_CONTINUE)
754{
755 response = <a href='#cupsGetResponse'>cupsGetResponse</a>(CUPS_HTTP_DEFAULT, "/");
756
757 if (response != NULL)
758 {
759 ssize_t bytes;
760 char buffer[8192];
761
762 while ((bytes = <a href='#cupsReadResponseData'>cupsReadResponseData</a>(CUPS_HTTP_DEFAULT, buffer, sizeof(buffer))) > 0)
763 write(tempfd, buffer, bytes);
764 }
765}
766
767/* Free the request! */
768<a href='#ippDelete'>ippDelete</a>(request);
769</pre>
770
771<p>The <a href='#cupsSendRequest'><code>cupsSendRequest</code></a> function
772returns the initial HTTP request status, typically either
773<code>HTTP_CONTINUE</code> or <code>HTTP_UNAUTHORIZED</code>. The latter status
774is returned when the request requires authentication of some sort. The
775<a href='#cupsDoAuthentication'><code>cupsDoAuthentication</code></a> function
776must be called when your see <code>HTTP_UNAUTHORIZED</code> and the request
777re-sent. We can add authentication support to our example code by using a
778<code>do ... while</code> loop:</p>
779
780<pre class='example'>
781char tempfile[1024];
782int tempfd;
783<a href='#ipp_t'>ipp_t</a> *request = <a href='#ippNewRequest'>ippNewRequest</a>(CUPS_GET_PPD);
784<a href='#ipp_t'>ipp_t</a> *response;
785http_status_t status;
786
787<a href='#ippAddString'>ippAddString</a>(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "ppd-name",
788 NULL, "laserjet.ppd");
789
790tempfd = cupsTempFd(tempfile, sizeof(tempfile));
791
792/* Loop for authentication */
793do
794{
75bd9771 795 status = <a href='#cupsSendRequest'>cupsSendRequest</a>(CUPS_HTTP_DEFAULT, request, "/");
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796
797 if (status == HTTP_UNAUTHORIZED)
798 {
799 /* Try to authenticate, break out of the loop if that fails */
800 if (<a href='#cupsDoAuthentication'>cupsDoAuthentication</a>(CUPS_HTTP_DEFAULT, "POST", "/"))
801 break;
802 }
803}
804while (status != HTTP_CONTINUE &amp;&amp; status != HTTP_UNAUTHORIZED);
805
806if (status == HTTP_CONTINUE)
807{
808 response = <a href='#cupsGetResponse'>cupsGetResponse</a>(CUPS_HTTP_DEFAULT, "/");
809
810 if (response != NULL)
811 {
812 ssize_t bytes;
813 char buffer[8192];
814
815 while ((bytes = <a href='#cupsReadResponseData'>cupsReadResponseData</a>(CUPS_HTTP_DEFAULT, buffer, sizeof(buffer))) > 0)
816 write(tempfd, buffer, bytes);
817 }
818}
819
820/* Free the request! */
821<a href='#ippDelete'>ippDelete</a>(request);
822</pre>
823<h2 class="title"><a name="FUNCTIONS">Functions</a></h2>
824<h3 class="function"><span class="info">&nbsp;CUPS 1.1.20&nbsp;</span><a name="cupsDoAuthentication">cupsDoAuthentication</a></h3>
825<p class="description">Authenticate a request.</p>
826<p class="code">
827int cupsDoAuthentication (<br>
828&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
829&nbsp;&nbsp;&nbsp;&nbsp;const char *method,<br>
830&nbsp;&nbsp;&nbsp;&nbsp;const char *resource<br>
831);</p>
832<h4 class="parameters">Parameters</h4>
833<dl>
834<dt>http</dt>
568fa3fa 835<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
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836<dt>method</dt>
837<dd class="description">Request method (&quot;GET&quot;, &quot;POST&quot;, &quot;PUT&quot;)</dd>
838<dt>resource</dt>
839<dd class="description">Resource path</dd>
840</dl>
841<h4 class="returnvalue">Return Value</h4>
842<p class="description">0 on success, -1 on error</p>
843<h4 class="discussion">Discussion</h4>
844<p class="discussion">This function should be called in response to a <code>HTTP_UNAUTHORIZED</code>
845status, prior to resubmitting your request.
846
847</p>
848<h3 class="function"><a name="cupsDoFileRequest">cupsDoFileRequest</a></h3>
849<p class="description">Do an IPP request with a file.</p>
850<p class="code">
851<a href="#ipp_t">ipp_t</a> *cupsDoFileRequest (<br>
852&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
853&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *request,<br>
854&nbsp;&nbsp;&nbsp;&nbsp;const char *resource,<br>
855&nbsp;&nbsp;&nbsp;&nbsp;const char *filename<br>
856);</p>
857<h4 class="parameters">Parameters</h4>
858<dl>
859<dt>http</dt>
568fa3fa 860<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
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861<dt>request</dt>
862<dd class="description">IPP request</dd>
863<dt>resource</dt>
864<dd class="description">HTTP resource for POST</dd>
865<dt>filename</dt>
568fa3fa 866<dd class="description">File to send or <code>NULL</code> for none</dd>
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867</dl>
868<h4 class="returnvalue">Return Value</h4>
869<p class="description">Response data</p>
870<h4 class="discussion">Discussion</h4>
871<p class="discussion">This function sends the IPP request to the specified server, retrying
568fa3fa 872and authenticating as necessary. The request is freed with <a href="#ippDelete"><code>ippDelete</code></a>
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873after receiving a valid IPP response.</p>
874<h3 class="function"><span class="info">&nbsp;CUPS 1.3&nbsp;</span><a name="cupsDoIORequest">cupsDoIORequest</a></h3>
875<p class="description">Do an IPP request with file descriptors.</p>
876<p class="code">
877<a href="#ipp_t">ipp_t</a> *cupsDoIORequest (<br>
878&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
879&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *request,<br>
880&nbsp;&nbsp;&nbsp;&nbsp;const char *resource,<br>
881&nbsp;&nbsp;&nbsp;&nbsp;int infile,<br>
882&nbsp;&nbsp;&nbsp;&nbsp;int outfile<br>
883);</p>
884<h4 class="parameters">Parameters</h4>
885<dl>
886<dt>http</dt>
568fa3fa 887<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
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888<dt>request</dt>
889<dd class="description">IPP request</dd>
890<dt>resource</dt>
891<dd class="description">HTTP resource for POST</dd>
892<dt>infile</dt>
893<dd class="description">File to read from or -1 for none</dd>
894<dt>outfile</dt>
895<dd class="description">File to write to or -1 for none</dd>
896</dl>
897<h4 class="returnvalue">Return Value</h4>
898<p class="description">Response data</p>
899<h4 class="discussion">Discussion</h4>
900<p class="discussion">This function sends the IPP request to the specified server, retrying
bc44d920 901and authenticating as necessary. The request is freed with ippDelete()
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902after receiving a valid IPP response.<br>
903<br>
904If &quot;infile&quot; is a valid file descriptor, cupsDoIORequest() copies
905all of the data from the file after the IPP request message.<br>
906<br>
907If &quot;outfile&quot; is a valid file descriptor, cupsDoIORequest() copies
bc44d920 908all of the data after the IPP response message to the file.
909
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910</p>
911<h3 class="function"><a name="cupsDoRequest">cupsDoRequest</a></h3>
912<p class="description">Do an IPP request.</p>
913<p class="code">
914<a href="#ipp_t">ipp_t</a> *cupsDoRequest (<br>
915&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
916&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *request,<br>
917&nbsp;&nbsp;&nbsp;&nbsp;const char *resource<br>
918);</p>
919<h4 class="parameters">Parameters</h4>
920<dl>
921<dt>http</dt>
568fa3fa 922<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
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923<dt>request</dt>
924<dd class="description">IPP request</dd>
925<dt>resource</dt>
926<dd class="description">HTTP resource for POST</dd>
927</dl>
928<h4 class="returnvalue">Return Value</h4>
929<p class="description">Response data</p>
930<h4 class="discussion">Discussion</h4>
931<p class="discussion">This function sends the IPP request to the specified server, retrying
ecdc0628 932and authenticating as necessary. The request is freed with ippDelete()
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933after receiving a valid IPP response.</p>
934<h3 class="function"><a name="cupsEncodeOptions">cupsEncodeOptions</a></h3>
935<p class="description">Encode printer options into IPP attributes.</p>
936<p class="code">
937void cupsEncodeOptions (<br>
938&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
939&nbsp;&nbsp;&nbsp;&nbsp;int num_options,<br>
940&nbsp;&nbsp;&nbsp;&nbsp;cups_option_t *options<br>
941);</p>
942<h4 class="parameters">Parameters</h4>
943<dl>
944<dt>ipp</dt>
945<dd class="description">Request to add to</dd>
946<dt>num_options</dt>
947<dd class="description">Number of options</dd>
948<dt>options</dt>
949<dd class="description">Options</dd>
950</dl>
951<h4 class="discussion">Discussion</h4>
952<p class="discussion">This function adds operation, job, and then subscription attributes,
ecdc0628 953in that order. Use the cupsEncodeOptions2() function to add attributes
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954for a single group.</p>
955<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="cupsEncodeOptions2">cupsEncodeOptions2</a></h3>
956<p class="description">Encode printer options into IPP attributes for a group.</p>
957<p class="code">
958void cupsEncodeOptions2 (<br>
959&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
960&nbsp;&nbsp;&nbsp;&nbsp;int num_options,<br>
961&nbsp;&nbsp;&nbsp;&nbsp;cups_option_t *options,<br>
79e1d494 962&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group_tag<br>
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963);</p>
964<h4 class="parameters">Parameters</h4>
965<dl>
966<dt>ipp</dt>
967<dd class="description">Request to add to</dd>
968<dt>num_options</dt>
969<dd class="description">Number of options</dd>
970<dt>options</dt>
971<dd class="description">Options</dd>
972<dt>group_tag</dt>
973<dd class="description">Group to encode</dd>
974</dl>
975<h4 class="discussion">Discussion</h4>
976<p class="discussion">This function only adds attributes for a single group. Call this
ecdc0628 977function multiple times for each group, or use cupsEncodeOptions()
978to add the standard groups.
ef416fc2 979
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980</p>
981<h3 class="function"><span class="info">&nbsp;CUPS 1.4&nbsp;</span><a name="cupsGetDevices">cupsGetDevices</a></h3>
982<p class="description">Get available printer devices.</p>
983<p class="code">
984ipp_status_t cupsGetDevices (<br>
985&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
986&nbsp;&nbsp;&nbsp;&nbsp;int timeout,<br>
987&nbsp;&nbsp;&nbsp;&nbsp;const char *exclude_schemes,<br>
988&nbsp;&nbsp;&nbsp;&nbsp;cups_device_cb_t callback,<br>
989&nbsp;&nbsp;&nbsp;&nbsp;void *user_data<br>
990);</p>
991<h4 class="parameters">Parameters</h4>
992<dl>
993<dt>http</dt>
994<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
995<dt>timeout</dt>
996<dd class="description">Timeout in seconds or <code>CUPS_TIMEOUT_DEFAULT</code></dd>
997<dt>exclude_schemes</dt>
998<dd class="description">Comma-separated URI schemes to exclude or <code>CUPS_EXCLUDE_NONE</code></dd>
999<dt>callback</dt>
1000<dd class="description">Callback function</dd>
1001<dt>user_data</dt>
1002<dd class="description">User data pointer</dd>
1003</dl>
1004<h4 class="returnvalue">Return Value</h4>
1005<p class="description">Request status - <code>IPP_OK</code> on success.</p>
1006<h4 class="discussion">Discussion</h4>
1007<p class="discussion">This function sends a CUPS-Get-Devices request and streams the discovered
1008devices to the specified callback function. The &quot;timeout&quot; parameter controls
1009how long the request lasts, while the &quot;exclude_schemes&quot; parameter provides
1010a comma-delimited list of backends to omit from the request.
1011
1012</p>
1013<h3 class="function"><span class="info">&nbsp;CUPS 1.1.20&nbsp;</span><a name="cupsGetFd">cupsGetFd</a></h3>
1014<p class="description">Get a file from the server.</p>
1015<p class="code">
79e1d494 1016<a href="#http_status_t">http_status_t</a> cupsGetFd (<br>
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1017&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1018&nbsp;&nbsp;&nbsp;&nbsp;const char *resource,<br>
1019&nbsp;&nbsp;&nbsp;&nbsp;int fd<br>
1020);</p>
1021<h4 class="parameters">Parameters</h4>
1022<dl>
1023<dt>http</dt>
1024<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
1025<dt>resource</dt>
1026<dd class="description">Resource name</dd>
1027<dt>fd</dt>
1028<dd class="description">File descriptor</dd>
1029</dl>
1030<h4 class="returnvalue">Return Value</h4>
1031<p class="description">HTTP status</p>
1032<h4 class="discussion">Discussion</h4>
1033<p class="discussion">This function returns <code>HTTP_OK</code> when the file is successfully retrieved.
1034
1035</p>
1036<h3 class="function"><span class="info">&nbsp;CUPS 1.1.20&nbsp;</span><a name="cupsGetFile">cupsGetFile</a></h3>
1037<p class="description">Get a file from the server.</p>
1038<p class="code">
79e1d494 1039<a href="#http_status_t">http_status_t</a> cupsGetFile (<br>
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1040&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1041&nbsp;&nbsp;&nbsp;&nbsp;const char *resource,<br>
1042&nbsp;&nbsp;&nbsp;&nbsp;const char *filename<br>
1043);</p>
1044<h4 class="parameters">Parameters</h4>
1045<dl>
1046<dt>http</dt>
1047<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
1048<dt>resource</dt>
1049<dd class="description">Resource name</dd>
1050<dt>filename</dt>
1051<dd class="description">Filename</dd>
1052</dl>
1053<h4 class="returnvalue">Return Value</h4>
1054<p class="description">HTTP status</p>
1055<h4 class="discussion">Discussion</h4>
1056<p class="discussion">This function returns <code>HTTP_OK</code> when the file is successfully retrieved.
1057
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1058</p>
1059<h3 class="function"><span class="info">&nbsp;CUPS 1.4&nbsp;</span><a name="cupsGetResponse">cupsGetResponse</a></h3>
1060<p class="description">Get a response to an IPP request.</p>
1061<p class="code">
1062<a href="#ipp_t">ipp_t</a> *cupsGetResponse (<br>
1063&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1064&nbsp;&nbsp;&nbsp;&nbsp;const char *resource<br>
1065);</p>
1066<h4 class="parameters">Parameters</h4>
1067<dl>
1068<dt>http</dt>
568fa3fa 1069<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
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1070<dt>resource</dt>
1071<dd class="description">HTTP resource for POST</dd>
1072</dl>
1073<h4 class="returnvalue">Return Value</h4>
568fa3fa 1074<p class="description">Response or <code>NULL</code> on HTTP error</p>
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1075<h4 class="discussion">Discussion</h4>
1076<p class="discussion">Use this function to get the response for an IPP request sent using
1077cupsSendDocument() or cupsSendRequest(). For requests that return
1078additional data, use httpRead() after getting a successful response.
1079
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1080</p>
1081<h3 class="function"><span class="info">&nbsp;CUPS 1.1.20&nbsp;</span><a name="cupsPutFd">cupsPutFd</a></h3>
1082<p class="description">Put a file on the server.</p>
1083<p class="code">
79e1d494 1084<a href="#http_status_t">http_status_t</a> cupsPutFd (<br>
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1085&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1086&nbsp;&nbsp;&nbsp;&nbsp;const char *resource,<br>
1087&nbsp;&nbsp;&nbsp;&nbsp;int fd<br>
1088);</p>
1089<h4 class="parameters">Parameters</h4>
1090<dl>
1091<dt>http</dt>
1092<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
1093<dt>resource</dt>
1094<dd class="description">Resource name</dd>
1095<dt>fd</dt>
1096<dd class="description">File descriptor</dd>
1097</dl>
1098<h4 class="returnvalue">Return Value</h4>
1099<p class="description">HTTP status</p>
1100<h4 class="discussion">Discussion</h4>
1101<p class="discussion">This function returns <code>HTTP_CREATED</code> when the file is stored
1102successfully.
1103
1104</p>
1105<h3 class="function"><span class="info">&nbsp;CUPS 1.1.20&nbsp;</span><a name="cupsPutFile">cupsPutFile</a></h3>
1106<p class="description">Put a file on the server.</p>
1107<p class="code">
79e1d494 1108<a href="#http_status_t">http_status_t</a> cupsPutFile (<br>
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1109&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1110&nbsp;&nbsp;&nbsp;&nbsp;const char *resource,<br>
1111&nbsp;&nbsp;&nbsp;&nbsp;const char *filename<br>
1112);</p>
1113<h4 class="parameters">Parameters</h4>
1114<dl>
1115<dt>http</dt>
1116<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
1117<dt>resource</dt>
1118<dd class="description">Resource name</dd>
1119<dt>filename</dt>
1120<dd class="description">Filename</dd>
1121</dl>
1122<h4 class="returnvalue">Return Value</h4>
1123<p class="description">HTTP status</p>
1124<h4 class="discussion">Discussion</h4>
1125<p class="discussion">This function returns <code>HTTP_CREATED</code> when the file is stored
1126successfully.
1127
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1128</p>
1129<h3 class="function"><span class="info">&nbsp;CUPS 1.4&nbsp;</span><a name="cupsReadResponseData">cupsReadResponseData</a></h3>
1130<p class="description">Read additional data after the IPP response.</p>
1131<p class="code">
1132ssize_t cupsReadResponseData (<br>
1133&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1134&nbsp;&nbsp;&nbsp;&nbsp;char *buffer,<br>
1135&nbsp;&nbsp;&nbsp;&nbsp;size_t length<br>
1136);</p>
1137<h4 class="parameters">Parameters</h4>
1138<dl>
1139<dt>http</dt>
568fa3fa 1140<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
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1141<dt>buffer</dt>
1142<dd class="description">Buffer to use</dd>
1143<dt>length</dt>
1144<dd class="description">Number of bytes to read</dd>
1145</dl>
1146<h4 class="returnvalue">Return Value</h4>
1147<p class="description">Bytes read, 0 on EOF, -1 on error</p>
1148<h4 class="discussion">Discussion</h4>
1149<p class="discussion">This function is used after cupsGetResponse() to read the PPD or document
1150files for CUPS_GET_PPD and CUPS_GET_DOCUMENT requests, respectively.
1151
1152</p>
1153<h3 class="function"><span class="info">&nbsp;CUPS 1.4&nbsp;</span><a name="cupsSendRequest">cupsSendRequest</a></h3>
1154<p class="description">Send an IPP request.</p>
1155<p class="code">
79e1d494 1156<a href="#http_status_t">http_status_t</a> cupsSendRequest (<br>
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1157&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1158&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *request,<br>
1159&nbsp;&nbsp;&nbsp;&nbsp;const char *resource,<br>
1160&nbsp;&nbsp;&nbsp;&nbsp;size_t length<br>
1161);</p>
1162<h4 class="parameters">Parameters</h4>
1163<dl>
1164<dt>http</dt>
568fa3fa 1165<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
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1166<dt>request</dt>
1167<dd class="description">IPP request</dd>
1168<dt>resource</dt>
1169<dd class="description">Resource path</dd>
1170<dt>length</dt>
ae71f5de 1171<dd class="description">Length of data to follow or <code>CUPS_LENGTH_VARIABLE</code></dd>
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1172</dl>
1173<h4 class="returnvalue">Return Value</h4>
1174<p class="description">Initial HTTP status</p>
1175<h4 class="discussion">Discussion</h4>
1176<p class="discussion">Use httpWrite() to write any additional data (document, PPD file, etc.)
1177for the request, cupsGetResponse() to get the IPP response, and httpRead()
1178to read any additional data following the response. Only one request can be
1179sent/queued at a time.<br>
1180<br>
1181Unlike cupsDoFileRequest(), cupsDoIORequest(), and cupsDoRequest(), the
1182request is not freed.
1183
1184</p>
1185<h3 class="function"><span class="info">&nbsp;CUPS 1.4&nbsp;</span><a name="cupsWriteRequestData">cupsWriteRequestData</a></h3>
1186<p class="description">Write additional data after an IPP request.</p>
1187<p class="code">
79e1d494 1188<a href="#http_status_t">http_status_t</a> cupsWriteRequestData (<br>
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MS
1189&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1190&nbsp;&nbsp;&nbsp;&nbsp;const char *buffer,<br>
1191&nbsp;&nbsp;&nbsp;&nbsp;size_t length<br>
1192);</p>
1193<h4 class="parameters">Parameters</h4>
1194<dl>
1195<dt>http</dt>
568fa3fa 1196<dd class="description">Connection to server or <code>CUPS_HTTP_DEFAULT</code></dd>
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1197<dt>buffer</dt>
1198<dd class="description">Bytes to write</dd>
1199<dt>length</dt>
1200<dd class="description">Number of bytes to write</dd>
1201</dl>
1202<h4 class="returnvalue">Return Value</h4>
568fa3fa 1203<p class="description"><code>HTTP_CONTINUE</code> if OK or HTTP status on error</p>
5a738aea 1204<h4 class="discussion">Discussion</h4>
568fa3fa
MS
1205<p class="discussion">This function is used after <a href="#cupsSendRequest"><code>cupsSendRequest</code></a> to provide a PPD and
1206after <a href="#cupsStartDocument"><code>cupsStartDocument</code></a> to provide a document file.
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1207
1208</p>
1209<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpAddrAny">httpAddrAny</a></h3>
1210<p class="description">Check for the &quot;any&quot; address.</p>
1211<p class="code">
1212int httpAddrAny (<br>
1213&nbsp;&nbsp;&nbsp;&nbsp;const <a href="#http_addr_t">http_addr_t</a> *addr<br>
1214);</p>
1215<h4 class="parameters">Parameters</h4>
1216<dl>
1217<dt>addr</dt>
1218<dd class="description">Address to check</dd>
1219</dl>
1220<h4 class="returnvalue">Return Value</h4>
1221<p class="description">1 if &quot;any&quot;, 0 otherwise</p>
1222<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpAddrEqual">httpAddrEqual</a></h3>
1223<p class="description">Compare two addresses.</p>
1224<p class="code">
1225int httpAddrEqual (<br>
1226&nbsp;&nbsp;&nbsp;&nbsp;const <a href="#http_addr_t">http_addr_t</a> *addr1,<br>
1227&nbsp;&nbsp;&nbsp;&nbsp;const <a href="#http_addr_t">http_addr_t</a> *addr2<br>
1228);</p>
1229<h4 class="parameters">Parameters</h4>
1230<dl>
1231<dt>addr1</dt>
1232<dd class="description">First address</dd>
1233<dt>addr2</dt>
1234<dd class="description">Second address</dd>
1235</dl>
1236<h4 class="returnvalue">Return Value</h4>
1237<p class="description">1 if equal, 0 if not</p>
1238<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpAddrLength">httpAddrLength</a></h3>
1239<p class="description">Return the length of the address in bytes.</p>
1240<p class="code">
1241int httpAddrLength (<br>
1242&nbsp;&nbsp;&nbsp;&nbsp;const <a href="#http_addr_t">http_addr_t</a> *addr<br>
1243);</p>
1244<h4 class="parameters">Parameters</h4>
1245<dl>
1246<dt>addr</dt>
1247<dd class="description">Address</dd>
1248</dl>
1249<h4 class="returnvalue">Return Value</h4>
1250<p class="description">Length in bytes</p>
1251<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpAddrLocalhost">httpAddrLocalhost</a></h3>
1252<p class="description">Check for the local loopback address.</p>
1253<p class="code">
1254int httpAddrLocalhost (<br>
1255&nbsp;&nbsp;&nbsp;&nbsp;const <a href="#http_addr_t">http_addr_t</a> *addr<br>
1256);</p>
1257<h4 class="parameters">Parameters</h4>
1258<dl>
1259<dt>addr</dt>
1260<dd class="description">Address to check</dd>
1261</dl>
1262<h4 class="returnvalue">Return Value</h4>
1263<p class="description">1 if local host, 0 otherwise</p>
1264<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpAddrLookup">httpAddrLookup</a></h3>
1265<p class="description">Lookup the hostname associated with the address.</p>
1266<p class="code">
1267char *httpAddrLookup (<br>
1268&nbsp;&nbsp;&nbsp;&nbsp;const <a href="#http_addr_t">http_addr_t</a> *addr,<br>
1269&nbsp;&nbsp;&nbsp;&nbsp;char *name,<br>
1270&nbsp;&nbsp;&nbsp;&nbsp;int namelen<br>
1271);</p>
1272<h4 class="parameters">Parameters</h4>
1273<dl>
1274<dt>addr</dt>
1275<dd class="description">Address to lookup</dd>
1276<dt>name</dt>
1277<dd class="description">Host name buffer</dd>
1278<dt>namelen</dt>
1279<dd class="description">Size of name buffer</dd>
1280</dl>
1281<h4 class="returnvalue">Return Value</h4>
1282<p class="description">Host name</p>
1283<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpAddrString">httpAddrString</a></h3>
1284<p class="description">Convert an address to a numeric string.</p>
1285<p class="code">
1286char *httpAddrString (<br>
1287&nbsp;&nbsp;&nbsp;&nbsp;const <a href="#http_addr_t">http_addr_t</a> *addr,<br>
1288&nbsp;&nbsp;&nbsp;&nbsp;char *s,<br>
1289&nbsp;&nbsp;&nbsp;&nbsp;int slen<br>
1290);</p>
1291<h4 class="parameters">Parameters</h4>
1292<dl>
1293<dt>addr</dt>
1294<dd class="description">Address to convert</dd>
1295<dt>s</dt>
1296<dd class="description">String buffer</dd>
1297<dt>slen</dt>
1298<dd class="description">Length of string</dd>
1299</dl>
1300<h4 class="returnvalue">Return Value</h4>
1301<p class="description">Numeric address string</p>
1302<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpAssembleURI">httpAssembleURI</a></h3>
1303<p class="description">Assemble a uniform resource identifier from its
1304components.</p>
1305<p class="code">
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MS
1306<a href="#http_uri_status_t">http_uri_status_t</a> httpAssembleURI (<br>
1307&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_uri_coding_t">http_uri_coding_t</a> encoding,<br>
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MS
1308&nbsp;&nbsp;&nbsp;&nbsp;char *uri,<br>
1309&nbsp;&nbsp;&nbsp;&nbsp;int urilen,<br>
1310&nbsp;&nbsp;&nbsp;&nbsp;const char *scheme,<br>
1311&nbsp;&nbsp;&nbsp;&nbsp;const char *username,<br>
1312&nbsp;&nbsp;&nbsp;&nbsp;const char *host,<br>
1313&nbsp;&nbsp;&nbsp;&nbsp;int port,<br>
1314&nbsp;&nbsp;&nbsp;&nbsp;const char *resource<br>
1315);</p>
1316<h4 class="parameters">Parameters</h4>
1317<dl>
1318<dt>encoding</dt>
1319<dd class="description">Encoding flags</dd>
1320<dt>uri</dt>
1321<dd class="description">URI buffer</dd>
1322<dt>urilen</dt>
1323<dd class="description">Size of URI buffer</dd>
1324<dt>scheme</dt>
1325<dd class="description">Scheme name</dd>
1326<dt>username</dt>
1327<dd class="description">Username</dd>
1328<dt>host</dt>
1329<dd class="description">Hostname or address</dd>
1330<dt>port</dt>
1331<dd class="description">Port number</dd>
1332<dt>resource</dt>
1333<dd class="description">Resource</dd>
1334</dl>
1335<h4 class="returnvalue">Return Value</h4>
1336<p class="description">URI status</p>
1337<h4 class="discussion">Discussion</h4>
1338<p class="discussion">This function escapes reserved characters in the URI depending on the
ecdc0628 1339value of the &quot;encoding&quot; argument. You should use this function in
1340place of traditional string functions whenever you need to create a
1341URI string.
ef416fc2 1342
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MS
1343</p>
1344<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpAssembleURIf">httpAssembleURIf</a></h3>
1345<p class="description">Assemble a uniform resource identifier from its
1346components with a formatted resource.</p>
1347<p class="code">
79e1d494
MS
1348<a href="#http_uri_status_t">http_uri_status_t</a> httpAssembleURIf (<br>
1349&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_uri_coding_t">http_uri_coding_t</a> encoding,<br>
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MS
1350&nbsp;&nbsp;&nbsp;&nbsp;char *uri,<br>
1351&nbsp;&nbsp;&nbsp;&nbsp;int urilen,<br>
1352&nbsp;&nbsp;&nbsp;&nbsp;const char *scheme,<br>
1353&nbsp;&nbsp;&nbsp;&nbsp;const char *username,<br>
1354&nbsp;&nbsp;&nbsp;&nbsp;const char *host,<br>
1355&nbsp;&nbsp;&nbsp;&nbsp;int port,<br>
1356&nbsp;&nbsp;&nbsp;&nbsp;const char *resourcef,<br>
1357&nbsp;&nbsp;&nbsp;&nbsp;...<br>
1358);</p>
1359<h4 class="parameters">Parameters</h4>
1360<dl>
1361<dt>encoding</dt>
1362<dd class="description">Encoding flags</dd>
1363<dt>uri</dt>
1364<dd class="description">URI buffer</dd>
1365<dt>urilen</dt>
1366<dd class="description">Size of URI buffer</dd>
1367<dt>scheme</dt>
1368<dd class="description">Scheme name</dd>
1369<dt>username</dt>
1370<dd class="description">Username</dd>
1371<dt>host</dt>
1372<dd class="description">Hostname or address</dd>
1373<dt>port</dt>
1374<dd class="description">Port number</dd>
1375<dt>resourcef</dt>
1376<dd class="description">Printf-style resource</dd>
1377<dt>...</dt>
1378<dd class="description">Additional arguments as needed</dd>
1379</dl>
1380<h4 class="returnvalue">Return Value</h4>
1381<p class="description">URI status</p>
1382<h4 class="discussion">Discussion</h4>
1383<p class="discussion">This function creates a formatted version of the resource string
ecdc0628 1384argument &quot;resourcef&quot; and escapes reserved characters in the URI
1385depending on the value of the &quot;encoding&quot; argument. You should use
1386this function in place of traditional string functions whenever
1387you need to create a URI string.
ef416fc2 1388
5a738aea
MS
1389</p>
1390<h3 class="function"><a name="httpBlocking">httpBlocking</a></h3>
1391<p class="description">Set blocking/non-blocking behavior on a connection.</p>
1392<p class="code">
1393void httpBlocking (<br>
1394&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1395&nbsp;&nbsp;&nbsp;&nbsp;int b<br>
1396);</p>
1397<h4 class="parameters">Parameters</h4>
1398<dl>
1399<dt>http</dt>
568fa3fa 1400<dd class="description">Connection to server</dd>
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1401<dt>b</dt>
1402<dd class="description">1 = blocking, 0 = non-blocking</dd>
1403</dl>
1404<h3 class="function"><a name="httpCheck">httpCheck</a></h3>
1405<p class="description">Check to see if there is a pending response from the server.</p>
1406<p class="code">
1407int httpCheck (<br>
1408&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1409);</p>
1410<h4 class="parameters">Parameters</h4>
1411<dl>
1412<dt>http</dt>
568fa3fa 1413<dd class="description">Connection to server</dd>
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1414</dl>
1415<h4 class="returnvalue">Return Value</h4>
1416<p class="description">0 = no data, 1 = data available</p>
1417<h3 class="function"><span class="info">&nbsp;CUPS 1.1.19&nbsp;</span><a name="httpClearCookie">httpClearCookie</a></h3>
1418<p class="description">Clear the cookie value(s).</p>
1419<p class="code">
1420void httpClearCookie (<br>
1421&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1422);</p>
1423<h4 class="parameters">Parameters</h4>
1424<dl>
1425<dt>http</dt>
568fa3fa 1426<dd class="description">Connection to server</dd>
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MS
1427</dl>
1428<h3 class="function"><a name="httpClearFields">httpClearFields</a></h3>
1429<p class="description">Clear HTTP request fields.</p>
1430<p class="code">
1431void httpClearFields (<br>
1432&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1433);</p>
1434<h4 class="parameters">Parameters</h4>
1435<dl>
1436<dt>http</dt>
568fa3fa 1437<dd class="description">Connection to server</dd>
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MS
1438</dl>
1439<h3 class="function"><a name="httpClose">httpClose</a></h3>
1440<p class="description">Close an HTTP connection...</p>
1441<p class="code">
1442void httpClose (<br>
1443&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1444);</p>
1445<h4 class="parameters">Parameters</h4>
1446<dl>
1447<dt>http</dt>
568fa3fa 1448<dd class="description">Connection to server</dd>
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MS
1449</dl>
1450<h3 class="function"><a name="httpConnect">httpConnect</a></h3>
1451<p class="description">Connect to a HTTP server.</p>
1452<p class="code">
1453<a href="#http_t">http_t</a> *httpConnect (<br>
1454&nbsp;&nbsp;&nbsp;&nbsp;const char *host,<br>
1455&nbsp;&nbsp;&nbsp;&nbsp;int port<br>
1456);</p>
1457<h4 class="parameters">Parameters</h4>
1458<dl>
1459<dt>host</dt>
1460<dd class="description">Host to connect to</dd>
1461<dt>port</dt>
1462<dd class="description">Port number</dd>
1463</dl>
1464<h4 class="returnvalue">Return Value</h4>
1465<p class="description">New HTTP connection</p>
1466<h3 class="function"><a name="httpConnectEncrypt">httpConnectEncrypt</a></h3>
1467<p class="description">Connect to a HTTP server using encryption.</p>
1468<p class="code">
1469<a href="#http_t">http_t</a> *httpConnectEncrypt (<br>
1470&nbsp;&nbsp;&nbsp;&nbsp;const char *host,<br>
1471&nbsp;&nbsp;&nbsp;&nbsp;int port,<br>
1472&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_encryption_t">http_encryption_t</a> encryption<br>
1473);</p>
1474<h4 class="parameters">Parameters</h4>
1475<dl>
1476<dt>host</dt>
1477<dd class="description">Host to connect to</dd>
1478<dt>port</dt>
1479<dd class="description">Port number</dd>
1480<dt>encryption</dt>
1481<dd class="description">Type of encryption to use</dd>
1482</dl>
1483<h4 class="returnvalue">Return Value</h4>
1484<p class="description">New HTTP connection</p>
1485<h3 class="function"><span class="info">&nbsp;DEPRECATED&nbsp;</span><a name="httpDecode64">httpDecode64</a></h3>
1486<p class="description">Base64-decode a string.</p>
1487<p class="code">
1488char *httpDecode64 (<br>
1489&nbsp;&nbsp;&nbsp;&nbsp;char *out,<br>
1490&nbsp;&nbsp;&nbsp;&nbsp;const char *in<br>
1491);</p>
1492<h4 class="parameters">Parameters</h4>
1493<dl>
1494<dt>out</dt>
1495<dd class="description">String to write to</dd>
1496<dt>in</dt>
1497<dd class="description">String to read from</dd>
1498</dl>
1499<h4 class="returnvalue">Return Value</h4>
1500<p class="description">Decoded string</p>
1501<h4 class="discussion">Discussion</h4>
1502<p class="discussion">This function is deprecated. Use the httpDecode64_2() function instead
ecdc0628 1503which provides buffer length arguments.
1504
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MS
1505</p>
1506<h3 class="function"><span class="info">&nbsp;CUPS 1.1.21&nbsp;</span><a name="httpDecode64_2">httpDecode64_2</a></h3>
1507<p class="description">Base64-decode a string.</p>
1508<p class="code">
1509char *httpDecode64_2 (<br>
1510&nbsp;&nbsp;&nbsp;&nbsp;char *out,<br>
1511&nbsp;&nbsp;&nbsp;&nbsp;int *outlen,<br>
1512&nbsp;&nbsp;&nbsp;&nbsp;const char *in<br>
1513);</p>
1514<h4 class="parameters">Parameters</h4>
1515<dl>
1516<dt>out</dt>
1517<dd class="description">String to write to</dd>
1518<dt>outlen</dt>
1519<dd class="description">Size of output string</dd>
1520<dt>in</dt>
1521<dd class="description">String to read from</dd>
1522</dl>
1523<h4 class="returnvalue">Return Value</h4>
1524<p class="description">Decoded string</p>
1525<h3 class="function"><a name="httpDelete">httpDelete</a></h3>
1526<p class="description">Send a DELETE request to the server.</p>
1527<p class="code">
1528int httpDelete (<br>
1529&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1530&nbsp;&nbsp;&nbsp;&nbsp;const char *uri<br>
1531);</p>
1532<h4 class="parameters">Parameters</h4>
1533<dl>
1534<dt>http</dt>
568fa3fa 1535<dd class="description">Connection to server</dd>
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1536<dt>uri</dt>
1537<dd class="description">URI to delete</dd>
1538</dl>
1539<h4 class="returnvalue">Return Value</h4>
1540<p class="description">Status of call (0 = success)</p>
1541<h3 class="function"><span class="info">&nbsp;DEPRECATED&nbsp;</span><a name="httpEncode64">httpEncode64</a></h3>
1542<p class="description">Base64-encode a string.</p>
1543<p class="code">
1544char *httpEncode64 (<br>
1545&nbsp;&nbsp;&nbsp;&nbsp;char *out,<br>
1546&nbsp;&nbsp;&nbsp;&nbsp;const char *in<br>
1547);</p>
1548<h4 class="parameters">Parameters</h4>
1549<dl>
1550<dt>out</dt>
1551<dd class="description">String to write to</dd>
1552<dt>in</dt>
1553<dd class="description">String to read from</dd>
1554</dl>
1555<h4 class="returnvalue">Return Value</h4>
1556<p class="description">Encoded string</p>
1557<h4 class="discussion">Discussion</h4>
1558<p class="discussion">This function is deprecated. Use the httpEncode64_2() function instead
ecdc0628 1559which provides buffer length arguments.
1560
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1561</p>
1562<h3 class="function"><span class="info">&nbsp;CUPS 1.1.21&nbsp;</span><a name="httpEncode64_2">httpEncode64_2</a></h3>
1563<p class="description">Base64-encode a string.</p>
1564<p class="code">
1565char *httpEncode64_2 (<br>
1566&nbsp;&nbsp;&nbsp;&nbsp;char *out,<br>
1567&nbsp;&nbsp;&nbsp;&nbsp;int outlen,<br>
1568&nbsp;&nbsp;&nbsp;&nbsp;const char *in,<br>
1569&nbsp;&nbsp;&nbsp;&nbsp;int inlen<br>
1570);</p>
1571<h4 class="parameters">Parameters</h4>
1572<dl>
1573<dt>out</dt>
1574<dd class="description">String to write to</dd>
1575<dt>outlen</dt>
1576<dd class="description">Size of output string</dd>
1577<dt>in</dt>
1578<dd class="description">String to read from</dd>
1579<dt>inlen</dt>
1580<dd class="description">Size of input string</dd>
1581</dl>
1582<h4 class="returnvalue">Return Value</h4>
1583<p class="description">Encoded string</p>
1584<h3 class="function"><a name="httpEncryption">httpEncryption</a></h3>
1585<p class="description">Set the required encryption on the link.</p>
1586<p class="code">
1587int httpEncryption (<br>
1588&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1589&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_encryption_t">http_encryption_t</a> e<br>
1590);</p>
1591<h4 class="parameters">Parameters</h4>
1592<dl>
1593<dt>http</dt>
568fa3fa 1594<dd class="description">Connection to server</dd>
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MS
1595<dt>e</dt>
1596<dd class="description">New encryption preference</dd>
1597</dl>
1598<h4 class="returnvalue">Return Value</h4>
1599<p class="description">-1 on error, 0 on success</p>
1600<h3 class="function"><a name="httpError">httpError</a></h3>
1601<p class="description">Get the last error on a connection.</p>
1602<p class="code">
1603int httpError (<br>
1604&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1605);</p>
1606<h4 class="parameters">Parameters</h4>
1607<dl>
1608<dt>http</dt>
568fa3fa 1609<dd class="description">Connection to server</dd>
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1610</dl>
1611<h4 class="returnvalue">Return Value</h4>
1612<p class="description">Error code (errno) value</p>
1613<h3 class="function"><a name="httpFlush">httpFlush</a></h3>
1614<p class="description">Flush data from a HTTP connection.</p>
1615<p class="code">
1616void httpFlush (<br>
1617&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1618);</p>
1619<h4 class="parameters">Parameters</h4>
1620<dl>
1621<dt>http</dt>
568fa3fa 1622<dd class="description">Connection to server</dd>
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1623</dl>
1624<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpFlushWrite">httpFlushWrite</a></h3>
1625<p class="description">Flush data in write buffer.</p>
1626<p class="code">
1627int httpFlushWrite (<br>
1628&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1629);</p>
1630<h4 class="parameters">Parameters</h4>
1631<dl>
1632<dt>http</dt>
568fa3fa 1633<dd class="description">Connection to server</dd>
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MS
1634</dl>
1635<h4 class="returnvalue">Return Value</h4>
1636<p class="description">Bytes written or -1 on error</p>
1637<h3 class="function"><a name="httpGet">httpGet</a></h3>
1638<p class="description">Send a GET request to the server.</p>
1639<p class="code">
1640int httpGet (<br>
1641&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1642&nbsp;&nbsp;&nbsp;&nbsp;const char *uri<br>
1643);</p>
1644<h4 class="parameters">Parameters</h4>
1645<dl>
1646<dt>http</dt>
568fa3fa 1647<dd class="description">Connection to server</dd>
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MS
1648<dt>uri</dt>
1649<dd class="description">URI to get</dd>
1650</dl>
1651<h4 class="returnvalue">Return Value</h4>
1652<p class="description">Status of call (0 = success)</p>
1653<h3 class="function"><span class="info">&nbsp;CUPS 1.3&nbsp;</span><a name="httpGetAuthString">httpGetAuthString</a></h3>
1654<p class="description">Get the current authorization string.</p>
1655<p class="code">
1656char *httpGetAuthString (<br>
1657&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1658);</p>
1659<h4 class="parameters">Parameters</h4>
1660<dl>
1661<dt>http</dt>
568fa3fa 1662<dd class="description">Connection to server</dd>
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MS
1663</dl>
1664<h4 class="returnvalue">Return Value</h4>
1665<p class="description">Authorization string</p>
1666<h4 class="discussion">Discussion</h4>
1667<p class="discussion">The authorization string is set by cupsDoAuthentication() and
355e94dc
MS
1668httpSetAuthString(). Use httpGetAuthString() to retrieve the
1669string to use with httpSetField() for the HTTP_FIELD_AUTHORIZATION
1670value.
1671
5a738aea
MS
1672</p>
1673<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpGetBlocking">httpGetBlocking</a></h3>
1674<p class="description">Get the blocking/non-block state of a connection.</p>
1675<p class="code">
1676int httpGetBlocking (<br>
1677&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1678);</p>
1679<h4 class="parameters">Parameters</h4>
1680<dl>
1681<dt>http</dt>
568fa3fa 1682<dd class="description">Connection to server</dd>
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MS
1683</dl>
1684<h4 class="returnvalue">Return Value</h4>
1685<p class="description">1 if blocking, 0 if non-blocking</p>
1686<h3 class="function"><span class="info">&nbsp;CUPS 1.1.19&nbsp;</span><a name="httpGetCookie">httpGetCookie</a></h3>
1687<p class="description">Get any cookie data from the response.</p>
1688<p class="code">
1689const char *httpGetCookie (<br>
1690&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1691);</p>
1692<h4 class="parameters">Parameters</h4>
1693<dl>
1694<dt>http</dt>
1695<dd class="description">HTTP connecion</dd>
1696</dl>
1697<h4 class="returnvalue">Return Value</h4>
1698<p class="description">Cookie data or NULL</p>
1699<h3 class="function"><span class="info">&nbsp;DEPRECATED&nbsp;</span><a name="httpGetDateString">httpGetDateString</a></h3>
1700<p class="description">Get a formatted date/time string from a time value.</p>
1701<p class="code">
1702const char *httpGetDateString (<br>
1703&nbsp;&nbsp;&nbsp;&nbsp;time_t t<br>
1704);</p>
1705<h4 class="parameters">Parameters</h4>
1706<dl>
1707<dt>t</dt>
1708<dd class="description">UNIX time</dd>
1709</dl>
1710<h4 class="returnvalue">Return Value</h4>
1711<p class="description">Date/time string</p>
1712<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpGetDateString2">httpGetDateString2</a></h3>
1713<p class="description">Get a formatted date/time string from a time value.</p>
1714<p class="code">
1715const char *httpGetDateString2 (<br>
1716&nbsp;&nbsp;&nbsp;&nbsp;time_t t,<br>
1717&nbsp;&nbsp;&nbsp;&nbsp;char *s,<br>
1718&nbsp;&nbsp;&nbsp;&nbsp;int slen<br>
1719);</p>
1720<h4 class="parameters">Parameters</h4>
1721<dl>
1722<dt>t</dt>
1723<dd class="description">UNIX time</dd>
1724<dt>s</dt>
1725<dd class="description">String buffer</dd>
1726<dt>slen</dt>
1727<dd class="description">Size of string buffer</dd>
1728</dl>
1729<h4 class="returnvalue">Return Value</h4>
1730<p class="description">Date/time string</p>
1731<h3 class="function"><a name="httpGetDateTime">httpGetDateTime</a></h3>
1732<p class="description">Get a time value from a formatted date/time string.</p>
1733<p class="code">
1734time_t httpGetDateTime (<br>
1735&nbsp;&nbsp;&nbsp;&nbsp;const char *s<br>
1736);</p>
1737<h4 class="parameters">Parameters</h4>
1738<dl>
1739<dt>s</dt>
1740<dd class="description">Date/time string</dd>
1741</dl>
1742<h4 class="returnvalue">Return Value</h4>
1743<p class="description">UNIX time</p>
1744<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpGetFd">httpGetFd</a></h3>
1745<p class="description">Get the file descriptor associated with a connection.</p>
1746<p class="code">
1747int httpGetFd (<br>
1748&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1749);</p>
1750<h4 class="parameters">Parameters</h4>
1751<dl>
1752<dt>http</dt>
568fa3fa 1753<dd class="description">Connection to server</dd>
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MS
1754</dl>
1755<h4 class="returnvalue">Return Value</h4>
1756<p class="description">File descriptor or -1 if none</p>
1757<h3 class="function"><a name="httpGetField">httpGetField</a></h3>
1758<p class="description">Get a field value from a request/response.</p>
1759<p class="code">
1760const char *httpGetField (<br>
1761&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
79e1d494 1762&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_field_t">http_field_t</a> field<br>
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MS
1763);</p>
1764<h4 class="parameters">Parameters</h4>
1765<dl>
1766<dt>http</dt>
568fa3fa 1767<dd class="description">Connection to server</dd>
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MS
1768<dt>field</dt>
1769<dd class="description">Field to get</dd>
1770</dl>
1771<h4 class="returnvalue">Return Value</h4>
1772<p class="description">Field value</p>
1773<h3 class="function"><span class="info">&nbsp;DEPRECATED&nbsp;</span><a name="httpGetHostByName">httpGetHostByName</a></h3>
1774<p class="description">Lookup a hostname or IPv4 address, and return
1775address records for the specified name.</p>
1776<p class="code">
1777struct hostent *httpGetHostByName (<br>
1778&nbsp;&nbsp;&nbsp;&nbsp;const char *name<br>
1779);</p>
1780<h4 class="parameters">Parameters</h4>
1781<dl>
1782<dt>name</dt>
1783<dd class="description">Hostname or IP address</dd>
1784</dl>
1785<h4 class="returnvalue">Return Value</h4>
1786<p class="description">Host entry</p>
1787<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpGetHostname">httpGetHostname</a></h3>
1788<p class="description">Get the FQDN for the connection or local system.</p>
1789<p class="code">
1790const char *httpGetHostname (<br>
1791&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1792&nbsp;&nbsp;&nbsp;&nbsp;char *s,<br>
1793&nbsp;&nbsp;&nbsp;&nbsp;int slen<br>
1794);</p>
1795<h4 class="parameters">Parameters</h4>
1796<dl>
1797<dt>http</dt>
1798<dd class="description">HTTP connection or NULL</dd>
1799<dt>s</dt>
1800<dd class="description">String buffer for name</dd>
1801<dt>slen</dt>
1802<dd class="description">Size of buffer</dd>
1803</dl>
1804<h4 class="returnvalue">Return Value</h4>
1805<p class="description">FQDN for connection or system</p>
1806<h4 class="discussion">Discussion</h4>
1807<p class="discussion">When &quot;http&quot; points to a connected socket, return the hostname or
80ca4592 1808address that was used in the call to httpConnect() or httpConnectEncrypt().
1809Otherwise, return the FQDN for the local system using both gethostname()
1810and gethostbyname() to get the local hostname with domain.
ef416fc2 1811
5a738aea
MS
1812</p>
1813<h3 class="function"><span class="info">&nbsp;DEPRECATED&nbsp;</span><a name="httpGetLength">httpGetLength</a></h3>
1814<p class="description">Get the amount of data remaining from the
1815content-length or transfer-encoding fields.</p>
1816<p class="code">
1817int httpGetLength (<br>
1818&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1819);</p>
1820<h4 class="parameters">Parameters</h4>
1821<dl>
1822<dt>http</dt>
568fa3fa 1823<dd class="description">Connection to server</dd>
5a738aea
MS
1824</dl>
1825<h4 class="returnvalue">Return Value</h4>
1826<p class="description">Content length</p>
1827<h4 class="discussion">Discussion</h4>
1828<p class="discussion">This function is deprecated and will not return lengths larger than
ef416fc2 18292^31 - 1; use httpGetLength2() instead.
1830
5a738aea
MS
1831</p>
1832<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpGetLength2">httpGetLength2</a></h3>
1833<p class="description">Get the amount of data remaining from the
1834content-length or transfer-encoding fields.</p>
1835<p class="code">
1836off_t httpGetLength2 (<br>
1837&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1838);</p>
1839<h4 class="parameters">Parameters</h4>
1840<dl>
1841<dt>http</dt>
568fa3fa 1842<dd class="description">Connection to server</dd>
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MS
1843</dl>
1844<h4 class="returnvalue">Return Value</h4>
1845<p class="description">Content length</p>
1846<h4 class="discussion">Discussion</h4>
1847<p class="discussion">This function returns the complete content length, even for
ecdc0628 1848content larger than 2^31 - 1.
1849
5a738aea
MS
1850</p>
1851<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpGetStatus">httpGetStatus</a></h3>
1852<p class="description">Get the status of the last HTTP request.</p>
1853<p class="code">
79e1d494 1854<a href="#http_status_t">http_status_t</a> httpGetStatus (<br>
5a738aea
MS
1855&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1856);</p>
1857<h4 class="parameters">Parameters</h4>
1858<dl>
1859<dt>http</dt>
568fa3fa 1860<dd class="description">Connection to server</dd>
5a738aea
MS
1861</dl>
1862<h4 class="returnvalue">Return Value</h4>
1863<p class="description">HTTP status</p>
1864<h3 class="function"><span class="info">&nbsp;DEPRECATED&nbsp;</span><a name="httpGetSubField">httpGetSubField</a></h3>
1865<p class="description">Get a sub-field value.</p>
1866<p class="code">
1867char *httpGetSubField (<br>
1868&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
79e1d494 1869&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_field_t">http_field_t</a> field,<br>
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MS
1870&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
1871&nbsp;&nbsp;&nbsp;&nbsp;char *value<br>
1872);</p>
1873<h4 class="parameters">Parameters</h4>
1874<dl>
1875<dt>http</dt>
568fa3fa 1876<dd class="description">Connection to server</dd>
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MS
1877<dt>field</dt>
1878<dd class="description">Field index</dd>
1879<dt>name</dt>
1880<dd class="description">Name of sub-field</dd>
1881<dt>value</dt>
1882<dd class="description">Value string</dd>
1883</dl>
1884<h4 class="returnvalue">Return Value</h4>
1885<p class="description">Value or NULL</p>
1886<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpGetSubField2">httpGetSubField2</a></h3>
1887<p class="description">Get a sub-field value.</p>
1888<p class="code">
1889char *httpGetSubField2 (<br>
1890&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
79e1d494 1891&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_field_t">http_field_t</a> field,<br>
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1892&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
1893&nbsp;&nbsp;&nbsp;&nbsp;char *value,<br>
1894&nbsp;&nbsp;&nbsp;&nbsp;int valuelen<br>
1895);</p>
1896<h4 class="parameters">Parameters</h4>
1897<dl>
1898<dt>http</dt>
568fa3fa 1899<dd class="description">Connection to server</dd>
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1900<dt>field</dt>
1901<dd class="description">Field index</dd>
1902<dt>name</dt>
1903<dd class="description">Name of sub-field</dd>
1904<dt>value</dt>
1905<dd class="description">Value string</dd>
1906<dt>valuelen</dt>
1907<dd class="description">Size of value buffer</dd>
1908</dl>
1909<h4 class="returnvalue">Return Value</h4>
1910<p class="description">Value or NULL</p>
1911<h3 class="function"><a name="httpGets">httpGets</a></h3>
1912<p class="description">Get a line of text from a HTTP connection.</p>
1913<p class="code">
1914char *httpGets (<br>
1915&nbsp;&nbsp;&nbsp;&nbsp;char *line,<br>
1916&nbsp;&nbsp;&nbsp;&nbsp;int length,<br>
1917&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
1918);</p>
1919<h4 class="parameters">Parameters</h4>
1920<dl>
1921<dt>line</dt>
1922<dd class="description">Line to read into</dd>
1923<dt>length</dt>
1924<dd class="description">Max length of buffer</dd>
1925<dt>http</dt>
568fa3fa 1926<dd class="description">Connection to server</dd>
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1927</dl>
1928<h4 class="returnvalue">Return Value</h4>
1929<p class="description">Line or NULL</p>
1930<h3 class="function"><a name="httpHead">httpHead</a></h3>
1931<p class="description">Send a HEAD request to the server.</p>
1932<p class="code">
1933int httpHead (<br>
1934&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
1935&nbsp;&nbsp;&nbsp;&nbsp;const char *uri<br>
1936);</p>
1937<h4 class="parameters">Parameters</h4>
1938<dl>
1939<dt>http</dt>
568fa3fa 1940<dd class="description">Connection to server</dd>
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MS
1941<dt>uri</dt>
1942<dd class="description">URI for head</dd>
1943</dl>
1944<h4 class="returnvalue">Return Value</h4>
1945<p class="description">Status of call (0 = success)</p>
1946<h3 class="function"><a name="httpInitialize">httpInitialize</a></h3>
1947<p class="description">Initialize the HTTP interface library and set the
1948default HTTP proxy (if any).</p>
1949<p class="code">
1950void httpInitialize (void);</p>
1951<h3 class="function"><a name="httpMD5">httpMD5</a></h3>
1952<p class="description">Compute the MD5 sum of the username:group:password.</p>
1953<p class="code">
1954char *httpMD5 (<br>
1955&nbsp;&nbsp;&nbsp;&nbsp;const char *username,<br>
1956&nbsp;&nbsp;&nbsp;&nbsp;const char *realm,<br>
1957&nbsp;&nbsp;&nbsp;&nbsp;const char *passwd,<br>
1958&nbsp;&nbsp;&nbsp;&nbsp;char md5[33]<br>
1959);</p>
1960<h4 class="parameters">Parameters</h4>
1961<dl>
1962<dt>username</dt>
1963<dd class="description">User name</dd>
1964<dt>realm</dt>
1965<dd class="description">Realm name</dd>
1966<dt>passwd</dt>
1967<dd class="description">Password string</dd>
1968<dt>md5[33]</dt>
1969<dd class="description">MD5 string</dd>
1970</dl>
1971<h4 class="returnvalue">Return Value</h4>
1972<p class="description">MD5 sum</p>
1973<h3 class="function"><a name="httpMD5Final">httpMD5Final</a></h3>
1974<p class="description">Combine the MD5 sum of the username, group, and password
ef416fc2 1975with the server-supplied nonce value, method, and
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MS
1976request-uri.</p>
1977<p class="code">
1978char *httpMD5Final (<br>
1979&nbsp;&nbsp;&nbsp;&nbsp;const char *nonce,<br>
1980&nbsp;&nbsp;&nbsp;&nbsp;const char *method,<br>
1981&nbsp;&nbsp;&nbsp;&nbsp;const char *resource,<br>
1982&nbsp;&nbsp;&nbsp;&nbsp;char md5[33]<br>
1983);</p>
1984<h4 class="parameters">Parameters</h4>
1985<dl>
1986<dt>nonce</dt>
1987<dd class="description">Server nonce value</dd>
1988<dt>method</dt>
1989<dd class="description">METHOD (GET, POST, etc.)</dd>
1990<dt>resource</dt>
1991<dd class="description">Resource path</dd>
1992<dt>md5[33]</dt>
1993<dd class="description">MD5 sum</dd>
1994</dl>
1995<h4 class="returnvalue">Return Value</h4>
1996<p class="description">New sum</p>
1997<h3 class="function"><a name="httpMD5String">httpMD5String</a></h3>
1998<p class="description">Convert an MD5 sum to a character string.</p>
1999<p class="code">
2000char *httpMD5String (<br>
2001&nbsp;&nbsp;&nbsp;&nbsp;const unsigned char *sum,<br>
2002&nbsp;&nbsp;&nbsp;&nbsp;char md5[33]<br>
2003);</p>
2004<h4 class="parameters">Parameters</h4>
2005<dl>
2006<dt>sum</dt>
2007<dd class="description">MD5 sum data</dd>
2008<dt>md5[33]</dt>
2009<dd class="description">MD5 sum in hex</dd>
2010</dl>
2011<h4 class="returnvalue">Return Value</h4>
2012<p class="description">MD5 sum in hex</p>
2013<h3 class="function"><a name="httpOptions">httpOptions</a></h3>
2014<p class="description">Send an OPTIONS request to the server.</p>
2015<p class="code">
2016int httpOptions (<br>
2017&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2018&nbsp;&nbsp;&nbsp;&nbsp;const char *uri<br>
2019);</p>
2020<h4 class="parameters">Parameters</h4>
2021<dl>
2022<dt>http</dt>
568fa3fa 2023<dd class="description">Connection to server</dd>
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MS
2024<dt>uri</dt>
2025<dd class="description">URI for options</dd>
2026</dl>
2027<h4 class="returnvalue">Return Value</h4>
2028<p class="description">Status of call (0 = success)</p>
2029<h3 class="function"><a name="httpPost">httpPost</a></h3>
2030<p class="description">Send a POST request to the server.</p>
2031<p class="code">
2032int httpPost (<br>
2033&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2034&nbsp;&nbsp;&nbsp;&nbsp;const char *uri<br>
2035);</p>
2036<h4 class="parameters">Parameters</h4>
2037<dl>
2038<dt>http</dt>
568fa3fa 2039<dd class="description">Connection to server</dd>
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MS
2040<dt>uri</dt>
2041<dd class="description">URI for post</dd>
2042</dl>
2043<h4 class="returnvalue">Return Value</h4>
2044<p class="description">Status of call (0 = success)</p>
2045<h3 class="function"><a name="httpPut">httpPut</a></h3>
2046<p class="description">Send a PUT request to the server.</p>
2047<p class="code">
2048int httpPut (<br>
2049&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2050&nbsp;&nbsp;&nbsp;&nbsp;const char *uri<br>
2051);</p>
2052<h4 class="parameters">Parameters</h4>
2053<dl>
2054<dt>http</dt>
568fa3fa 2055<dd class="description">Connection to server</dd>
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MS
2056<dt>uri</dt>
2057<dd class="description">URI to put</dd>
2058</dl>
2059<h4 class="returnvalue">Return Value</h4>
2060<p class="description">Status of call (0 = success)</p>
2061<h3 class="function"><span class="info">&nbsp;DEPRECATED&nbsp;</span><a name="httpRead">httpRead</a></h3>
2062<p class="description">Read data from a HTTP connection.</p>
2063<p class="code">
2064int httpRead (<br>
2065&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2066&nbsp;&nbsp;&nbsp;&nbsp;char *buffer,<br>
2067&nbsp;&nbsp;&nbsp;&nbsp;int length<br>
2068);</p>
2069<h4 class="parameters">Parameters</h4>
2070<dl>
2071<dt>http</dt>
568fa3fa 2072<dd class="description">Connection to server</dd>
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MS
2073<dt>buffer</dt>
2074<dd class="description">Buffer for data</dd>
2075<dt>length</dt>
2076<dd class="description">Maximum number of bytes</dd>
2077</dl>
2078<h4 class="returnvalue">Return Value</h4>
2079<p class="description">Number of bytes read</p>
2080<h4 class="discussion">Discussion</h4>
2081<p class="discussion">This function is deprecated. Use the httpRead2() function which can
ecdc0628 2082read more than 2GB of data.
2083
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MS
2084</p>
2085<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpRead2">httpRead2</a></h3>
2086<p class="description">Read data from a HTTP connection.</p>
2087<p class="code">
2088ssize_t httpRead2 (<br>
2089&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2090&nbsp;&nbsp;&nbsp;&nbsp;char *buffer,<br>
2091&nbsp;&nbsp;&nbsp;&nbsp;size_t length<br>
2092);</p>
2093<h4 class="parameters">Parameters</h4>
2094<dl>
2095<dt>http</dt>
568fa3fa 2096<dd class="description">Connection to server</dd>
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MS
2097<dt>buffer</dt>
2098<dd class="description">Buffer for data</dd>
2099<dt>length</dt>
2100<dd class="description">Maximum number of bytes</dd>
2101</dl>
2102<h4 class="returnvalue">Return Value</h4>
2103<p class="description">Number of bytes read</p>
2104<h3 class="function"><a name="httpReconnect">httpReconnect</a></h3>
2105<p class="description">Reconnect to a HTTP server.</p>
2106<p class="code">
2107int httpReconnect (<br>
2108&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
2109);</p>
2110<h4 class="parameters">Parameters</h4>
2111<dl>
2112<dt>http</dt>
568fa3fa 2113<dd class="description">Connection to server</dd>
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MS
2114</dl>
2115<h4 class="returnvalue">Return Value</h4>
2116<p class="description">0 on success, non-zero on failure</p>
2117<h3 class="function"><span class="info">&nbsp;DEPRECATED&nbsp;</span><a name="httpSeparate">httpSeparate</a></h3>
2118<p class="description">Separate a Universal Resource Identifier into its
2119components.</p>
2120<p class="code">
2121void httpSeparate (<br>
2122&nbsp;&nbsp;&nbsp;&nbsp;const char *uri,<br>
2123&nbsp;&nbsp;&nbsp;&nbsp;char *scheme,<br>
2124&nbsp;&nbsp;&nbsp;&nbsp;char *username,<br>
2125&nbsp;&nbsp;&nbsp;&nbsp;char *host,<br>
2126&nbsp;&nbsp;&nbsp;&nbsp;int *port,<br>
2127&nbsp;&nbsp;&nbsp;&nbsp;char *resource<br>
2128);</p>
2129<h4 class="parameters">Parameters</h4>
2130<dl>
2131<dt>uri</dt>
2132<dd class="description">Universal Resource Identifier</dd>
2133<dt>scheme</dt>
2134<dd class="description">Scheme [32] (http, https, etc.)</dd>
2135<dt>username</dt>
2136<dd class="description">Username [1024]</dd>
2137<dt>host</dt>
2138<dd class="description">Hostname [1024]</dd>
2139<dt>port</dt>
2140<dd class="description">Port number to use</dd>
2141<dt>resource</dt>
2142<dd class="description">Resource/filename [1024]</dd>
2143</dl>
2144<h4 class="discussion">Discussion</h4>
2145<p class="discussion">This function is deprecated; use the httpSeparateURI() function instead.
2146
2147</p>
2148<h3 class="function"><span class="info">&nbsp;CUPS 1.1.21&nbsp;</span><a name="httpSeparate2">httpSeparate2</a></h3>
2149<p class="description">Separate a Universal Resource Identifier into its
2150components.</p>
2151<p class="code">
2152void httpSeparate2 (<br>
2153&nbsp;&nbsp;&nbsp;&nbsp;const char *uri,<br>
2154&nbsp;&nbsp;&nbsp;&nbsp;char *scheme,<br>
2155&nbsp;&nbsp;&nbsp;&nbsp;int schemelen,<br>
2156&nbsp;&nbsp;&nbsp;&nbsp;char *username,<br>
2157&nbsp;&nbsp;&nbsp;&nbsp;int usernamelen,<br>
2158&nbsp;&nbsp;&nbsp;&nbsp;char *host,<br>
2159&nbsp;&nbsp;&nbsp;&nbsp;int hostlen,<br>
2160&nbsp;&nbsp;&nbsp;&nbsp;int *port,<br>
2161&nbsp;&nbsp;&nbsp;&nbsp;char *resource,<br>
2162&nbsp;&nbsp;&nbsp;&nbsp;int resourcelen<br>
2163);</p>
2164<h4 class="parameters">Parameters</h4>
2165<dl>
2166<dt>uri</dt>
2167<dd class="description">Universal Resource Identifier</dd>
2168<dt>scheme</dt>
2169<dd class="description">Scheme (http, https, etc.)</dd>
2170<dt>schemelen</dt>
2171<dd class="description">Size of scheme buffer</dd>
2172<dt>username</dt>
2173<dd class="description">Username</dd>
2174<dt>usernamelen</dt>
2175<dd class="description">Size of username buffer</dd>
2176<dt>host</dt>
2177<dd class="description">Hostname</dd>
2178<dt>hostlen</dt>
2179<dd class="description">Size of hostname buffer</dd>
2180<dt>port</dt>
2181<dd class="description">Port number to use</dd>
2182<dt>resource</dt>
2183<dd class="description">Resource/filename</dd>
2184<dt>resourcelen</dt>
2185<dd class="description">Size of resource buffer</dd>
2186</dl>
2187<h4 class="discussion">Discussion</h4>
2188<p class="discussion">This function is deprecated; use the httpSeparateURI() function instead.
2189
2190
2191</p>
2192<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpSeparateURI">httpSeparateURI</a></h3>
2193<p class="description">Separate a Universal Resource Identifier into its
2194components.</p>
2195<p class="code">
79e1d494
MS
2196<a href="#http_uri_status_t">http_uri_status_t</a> httpSeparateURI (<br>
2197&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_uri_coding_t">http_uri_coding_t</a> decoding,<br>
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MS
2198&nbsp;&nbsp;&nbsp;&nbsp;const char *uri,<br>
2199&nbsp;&nbsp;&nbsp;&nbsp;char *scheme,<br>
2200&nbsp;&nbsp;&nbsp;&nbsp;int schemelen,<br>
2201&nbsp;&nbsp;&nbsp;&nbsp;char *username,<br>
2202&nbsp;&nbsp;&nbsp;&nbsp;int usernamelen,<br>
2203&nbsp;&nbsp;&nbsp;&nbsp;char *host,<br>
2204&nbsp;&nbsp;&nbsp;&nbsp;int hostlen,<br>
2205&nbsp;&nbsp;&nbsp;&nbsp;int *port,<br>
2206&nbsp;&nbsp;&nbsp;&nbsp;char *resource,<br>
2207&nbsp;&nbsp;&nbsp;&nbsp;int resourcelen<br>
2208);</p>
2209<h4 class="parameters">Parameters</h4>
2210<dl>
2211<dt>decoding</dt>
2212<dd class="description">Decoding flags</dd>
2213<dt>uri</dt>
2214<dd class="description">Universal Resource Identifier</dd>
2215<dt>scheme</dt>
2216<dd class="description">Scheme (http, https, etc.)</dd>
2217<dt>schemelen</dt>
2218<dd class="description">Size of scheme buffer</dd>
2219<dt>username</dt>
2220<dd class="description">Username</dd>
2221<dt>usernamelen</dt>
2222<dd class="description">Size of username buffer</dd>
2223<dt>host</dt>
2224<dd class="description">Hostname</dd>
2225<dt>hostlen</dt>
2226<dd class="description">Size of hostname buffer</dd>
2227<dt>port</dt>
2228<dd class="description">Port number to use</dd>
2229<dt>resource</dt>
2230<dd class="description">Resource/filename</dd>
2231<dt>resourcelen</dt>
2232<dd class="description">Size of resource buffer</dd>
2233</dl>
2234<h4 class="returnvalue">Return Value</h4>
2235<p class="description">Result of separation</p>
2236<h3 class="function"><span class="info">&nbsp;CUPS 1.3&nbsp;</span><a name="httpSetAuthString">httpSetAuthString</a></h3>
2237<p class="description">Set the current authorization string.</p>
2238<p class="code">
2239void httpSetAuthString (<br>
2240&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2241&nbsp;&nbsp;&nbsp;&nbsp;const char *scheme,<br>
2242&nbsp;&nbsp;&nbsp;&nbsp;const char *data<br>
2243);</p>
2244<h4 class="parameters">Parameters</h4>
2245<dl>
2246<dt>http</dt>
568fa3fa 2247<dd class="description">Connection to server</dd>
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MS
2248<dt>scheme</dt>
2249<dd class="description">Auth scheme (NULL to clear it)</dd>
2250<dt>data</dt>
2251<dd class="description">Auth data (NULL for none)</dd>
2252</dl>
2253<h4 class="discussion">Discussion</h4>
2254<p class="discussion">This function just stores a copy of the current authorization string in
355e94dc
MS
2255the HTTP connection object. You must still call httpSetField() to set
2256HTTP_FIELD_AUTHORIZATION prior to issuing a HTTP request using httpGet(),
2257httpHead(), httpOptions(), httpPost, or httpPut().
2258
5a738aea
MS
2259</p>
2260<h3 class="function"><span class="info">&nbsp;CUPS 1.1.19&nbsp;</span><a name="httpSetCookie">httpSetCookie</a></h3>
2261<p class="description">Set the cookie value(s)...</p>
2262<p class="code">
2263void httpSetCookie (<br>
2264&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2265&nbsp;&nbsp;&nbsp;&nbsp;const char *cookie<br>
2266);</p>
2267<h4 class="parameters">Parameters</h4>
2268<dl>
2269<dt>http</dt>
2270<dd class="description">Connection</dd>
2271<dt>cookie</dt>
2272<dd class="description">Cookie string</dd>
2273</dl>
2274<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpSetExpect">httpSetExpect</a></h3>
2275<p class="description">Set the Expect: header in a request.</p>
2276<p class="code">
2277void httpSetExpect (<br>
2278&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
79e1d494 2279&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_status_t">http_status_t</a> expect<br>
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MS
2280);</p>
2281<h4 class="parameters">Parameters</h4>
2282<dl>
2283<dt>http</dt>
568fa3fa 2284<dd class="description">Connection to server</dd>
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MS
2285<dt>expect</dt>
2286<dd class="description">HTTP status to expect (HTTP_CONTINUE)</dd>
2287</dl>
2288<h4 class="discussion">Discussion</h4>
2289<p class="discussion">Currently only HTTP_CONTINUE is supported for the &quot;expect&quot; argument.
2290
2291</p>
2292<h3 class="function"><a name="httpSetField">httpSetField</a></h3>
2293<p class="description">Set the value of an HTTP header.</p>
2294<p class="code">
2295void httpSetField (<br>
2296&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
79e1d494 2297&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_field_t">http_field_t</a> field,<br>
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MS
2298&nbsp;&nbsp;&nbsp;&nbsp;const char *value<br>
2299);</p>
2300<h4 class="parameters">Parameters</h4>
2301<dl>
2302<dt>http</dt>
568fa3fa 2303<dd class="description">Connection to server</dd>
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MS
2304<dt>field</dt>
2305<dd class="description">Field index</dd>
2306<dt>value</dt>
2307<dd class="description">Value</dd>
2308</dl>
2309<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpSetLength">httpSetLength</a></h3>
2310<p class="description">Set the content-length and content-encoding.</p>
2311<p class="code">
2312void httpSetLength (<br>
2313&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2314&nbsp;&nbsp;&nbsp;&nbsp;size_t length<br>
2315);</p>
2316<h4 class="parameters">Parameters</h4>
2317<dl>
2318<dt>http</dt>
568fa3fa 2319<dd class="description">Connection to server</dd>
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MS
2320<dt>length</dt>
2321<dd class="description">Length (0 for chunked)</dd>
2322</dl>
2323<h3 class="function"><a name="httpStatus">httpStatus</a></h3>
2324<p class="description">Return a short string describing a HTTP status code.</p>
2325<p class="code">
2326const char *httpStatus (<br>
79e1d494 2327&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_status_t">http_status_t</a> status<br>
5a738aea
MS
2328);</p>
2329<h4 class="parameters">Parameters</h4>
2330<dl>
2331<dt>status</dt>
2332<dd class="description">HTTP status code</dd>
2333</dl>
2334<h4 class="returnvalue">Return Value</h4>
2335<p class="description">String or NULL</p>
2336<h3 class="function"><a name="httpTrace">httpTrace</a></h3>
2337<p class="description">Send an TRACE request to the server.</p>
2338<p class="code">
2339int httpTrace (<br>
2340&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2341&nbsp;&nbsp;&nbsp;&nbsp;const char *uri<br>
2342);</p>
2343<h4 class="parameters">Parameters</h4>
2344<dl>
2345<dt>http</dt>
568fa3fa 2346<dd class="description">Connection to server</dd>
5a738aea
MS
2347<dt>uri</dt>
2348<dd class="description">URI for trace</dd>
2349</dl>
2350<h4 class="returnvalue">Return Value</h4>
2351<p class="description">Status of call (0 = success)</p>
2352<h3 class="function"><a name="httpUpdate">httpUpdate</a></h3>
2353<p class="description">Update the current HTTP state for incoming data.</p>
2354<p class="code">
79e1d494 2355<a href="#http_status_t">http_status_t</a> httpUpdate (<br>
5a738aea
MS
2356&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http<br>
2357);</p>
2358<h4 class="parameters">Parameters</h4>
2359<dl>
2360<dt>http</dt>
568fa3fa 2361<dd class="description">Connection to server</dd>
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MS
2362</dl>
2363<h4 class="returnvalue">Return Value</h4>
2364<p class="description">HTTP status</p>
2365<h3 class="function"><span class="info">&nbsp;CUPS 1.1.19&nbsp;</span><a name="httpWait">httpWait</a></h3>
2366<p class="description">Wait for data available on a connection.</p>
2367<p class="code">
2368int httpWait (<br>
2369&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2370&nbsp;&nbsp;&nbsp;&nbsp;int msec<br>
2371);</p>
2372<h4 class="parameters">Parameters</h4>
2373<dl>
2374<dt>http</dt>
568fa3fa 2375<dd class="description">Connection to server</dd>
5a738aea
MS
2376<dt>msec</dt>
2377<dd class="description">Milliseconds to wait</dd>
2378</dl>
2379<h4 class="returnvalue">Return Value</h4>
2380<p class="description">1 if data is available, 0 otherwise</p>
2381<h3 class="function"><span class="info">&nbsp;DEPRECATED&nbsp;</span><a name="httpWrite">httpWrite</a></h3>
2382<p class="description">Write data to a HTTP connection.</p>
2383<p class="code">
2384int httpWrite (<br>
2385&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2386&nbsp;&nbsp;&nbsp;&nbsp;const char *buffer,<br>
2387&nbsp;&nbsp;&nbsp;&nbsp;int length<br>
2388);</p>
2389<h4 class="parameters">Parameters</h4>
2390<dl>
2391<dt>http</dt>
568fa3fa 2392<dd class="description">Connection to server</dd>
5a738aea
MS
2393<dt>buffer</dt>
2394<dd class="description">Buffer for data</dd>
2395<dt>length</dt>
2396<dd class="description">Number of bytes to write</dd>
2397</dl>
2398<h4 class="returnvalue">Return Value</h4>
2399<p class="description">Number of bytes written</p>
2400<h4 class="discussion">Discussion</h4>
2401<p class="discussion">This function is deprecated. Use the httpWrite2() function which can
ecdc0628 2402write more than 2GB of data.
2403
5a738aea
MS
2404</p>
2405<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="httpWrite2">httpWrite2</a></h3>
2406<p class="description">Write data to a HTTP connection.</p>
2407<p class="code">
2408ssize_t httpWrite2 (<br>
2409&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2410&nbsp;&nbsp;&nbsp;&nbsp;const char *buffer,<br>
2411&nbsp;&nbsp;&nbsp;&nbsp;size_t length<br>
2412);</p>
2413<h4 class="parameters">Parameters</h4>
2414<dl>
2415<dt>http</dt>
568fa3fa 2416<dd class="description">Connection to server</dd>
5a738aea
MS
2417<dt>buffer</dt>
2418<dd class="description">Buffer for data</dd>
2419<dt>length</dt>
2420<dd class="description">Number of bytes to write</dd>
2421</dl>
2422<h4 class="returnvalue">Return Value</h4>
2423<p class="description">Number of bytes written</p>
2424<h3 class="function"><a name="ippAddBoolean">ippAddBoolean</a></h3>
2425<p class="description">Add a boolean attribute to an IPP message.</p>
2426<p class="code">
2427<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddBoolean (<br>
2428&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
79e1d494 2429&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
5a738aea
MS
2430&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2431&nbsp;&nbsp;&nbsp;&nbsp;char value<br>
2432);</p>
2433<h4 class="parameters">Parameters</h4>
2434<dl>
2435<dt>ipp</dt>
2436<dd class="description">IPP message</dd>
2437<dt>group</dt>
2438<dd class="description">IPP group</dd>
2439<dt>name</dt>
2440<dd class="description">Name of attribute</dd>
2441<dt>value</dt>
2442<dd class="description">Value of attribute</dd>
2443</dl>
2444<h4 class="returnvalue">Return Value</h4>
2445<p class="description">New attribute</p>
2446<h3 class="function"><a name="ippAddBooleans">ippAddBooleans</a></h3>
2447<p class="description">Add an array of boolean values.</p>
2448<p class="code">
2449<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddBooleans (<br>
2450&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
79e1d494 2451&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
5a738aea
MS
2452&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2453&nbsp;&nbsp;&nbsp;&nbsp;int num_values,<br>
2454&nbsp;&nbsp;&nbsp;&nbsp;const char *values<br>
2455);</p>
2456<h4 class="parameters">Parameters</h4>
2457<dl>
2458<dt>ipp</dt>
2459<dd class="description">IPP message</dd>
2460<dt>group</dt>
2461<dd class="description">IPP group</dd>
2462<dt>name</dt>
2463<dd class="description">Name of attribute</dd>
2464<dt>num_values</dt>
2465<dd class="description">Number of values</dd>
2466<dt>values</dt>
2467<dd class="description">Values</dd>
2468</dl>
2469<h4 class="returnvalue">Return Value</h4>
2470<p class="description">New attribute</p>
2471<h3 class="function"><span class="info">&nbsp;CUPS 1.1.19&nbsp;</span><a name="ippAddCollection">ippAddCollection</a></h3>
2472<p class="description">Add a collection value.</p>
2473<p class="code">
2474<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddCollection (<br>
2475&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
79e1d494 2476&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
5a738aea
MS
2477&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2478&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *value<br>
2479);</p>
2480<h4 class="parameters">Parameters</h4>
2481<dl>
2482<dt>ipp</dt>
2483<dd class="description">IPP message</dd>
2484<dt>group</dt>
2485<dd class="description">IPP group</dd>
2486<dt>name</dt>
2487<dd class="description">Name of attribute</dd>
2488<dt>value</dt>
2489<dd class="description">Value</dd>
2490</dl>
2491<h4 class="returnvalue">Return Value</h4>
2492<p class="description">New attribute</p>
2493<h3 class="function"><span class="info">&nbsp;CUPS 1.1.19&nbsp;</span><a name="ippAddCollections">ippAddCollections</a></h3>
2494<p class="description">Add an array of collection values.</p>
2495<p class="code">
2496<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddCollections (<br>
2497&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
79e1d494 2498&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
5a738aea
MS
2499&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2500&nbsp;&nbsp;&nbsp;&nbsp;int num_values,<br>
2501&nbsp;&nbsp;&nbsp;&nbsp;const <a href="#ipp_t">ipp_t</a> **values<br>
2502);</p>
2503<h4 class="parameters">Parameters</h4>
2504<dl>
2505<dt>ipp</dt>
2506<dd class="description">IPP message</dd>
2507<dt>group</dt>
2508<dd class="description">IPP group</dd>
2509<dt>name</dt>
2510<dd class="description">Name of attribute</dd>
2511<dt>num_values</dt>
2512<dd class="description">Number of values</dd>
2513<dt>values</dt>
2514<dd class="description">Values</dd>
2515</dl>
2516<h4 class="returnvalue">Return Value</h4>
2517<p class="description">New attribute</p>
2518<h3 class="function"><a name="ippAddDate">ippAddDate</a></h3>
2519<p class="description">Add a date attribute to an IPP message.</p>
2520<p class="code">
2521<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddDate (<br>
2522&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
79e1d494 2523&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
5a738aea
MS
2524&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2525&nbsp;&nbsp;&nbsp;&nbsp;const <a href="#ipp_uchar_t">ipp_uchar_t</a> *value<br>
2526);</p>
2527<h4 class="parameters">Parameters</h4>
2528<dl>
2529<dt>ipp</dt>
2530<dd class="description">IPP message</dd>
2531<dt>group</dt>
2532<dd class="description">IPP group</dd>
2533<dt>name</dt>
2534<dd class="description">Name of attribute</dd>
2535<dt>value</dt>
2536<dd class="description">Value</dd>
2537</dl>
2538<h4 class="returnvalue">Return Value</h4>
2539<p class="description">New attribute</p>
2540<h3 class="function"><a name="ippAddInteger">ippAddInteger</a></h3>
2541<p class="description">Add a integer attribute to an IPP message.</p>
2542<p class="code">
2543<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddInteger (<br>
2544&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
79e1d494
MS
2545&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
2546&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> type,<br>
5a738aea
MS
2547&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2548&nbsp;&nbsp;&nbsp;&nbsp;int value<br>
2549);</p>
2550<h4 class="parameters">Parameters</h4>
2551<dl>
2552<dt>ipp</dt>
2553<dd class="description">IPP message</dd>
2554<dt>group</dt>
2555<dd class="description">IPP group</dd>
2556<dt>type</dt>
2557<dd class="description">Type of attribute</dd>
2558<dt>name</dt>
2559<dd class="description">Name of attribute</dd>
2560<dt>value</dt>
2561<dd class="description">Value of attribute</dd>
2562</dl>
2563<h4 class="returnvalue">Return Value</h4>
2564<p class="description">New attribute</p>
2565<h3 class="function"><a name="ippAddIntegers">ippAddIntegers</a></h3>
2566<p class="description">Add an array of integer values.</p>
2567<p class="code">
2568<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddIntegers (<br>
2569&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
79e1d494
MS
2570&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
2571&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> type,<br>
5a738aea
MS
2572&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2573&nbsp;&nbsp;&nbsp;&nbsp;int num_values,<br>
2574&nbsp;&nbsp;&nbsp;&nbsp;const int *values<br>
2575);</p>
2576<h4 class="parameters">Parameters</h4>
2577<dl>
2578<dt>ipp</dt>
2579<dd class="description">IPP message</dd>
2580<dt>group</dt>
2581<dd class="description">IPP group</dd>
2582<dt>type</dt>
2583<dd class="description">Type of attribute</dd>
2584<dt>name</dt>
2585<dd class="description">Name of attribute</dd>
2586<dt>num_values</dt>
2587<dd class="description">Number of values</dd>
2588<dt>values</dt>
2589<dd class="description">Values</dd>
2590</dl>
2591<h4 class="returnvalue">Return Value</h4>
2592<p class="description">New attribute</p>
2593<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="ippAddOctetString">ippAddOctetString</a></h3>
2594<p class="description">Add an octetString value to an IPP message.</p>
2595<p class="code">
2596<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddOctetString (<br>
2597&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
79e1d494 2598&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
5a738aea
MS
2599&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2600&nbsp;&nbsp;&nbsp;&nbsp;const void *data,<br>
2601&nbsp;&nbsp;&nbsp;&nbsp;int datalen<br>
2602);</p>
2603<h4 class="parameters">Parameters</h4>
2604<dl>
2605<dt>ipp</dt>
2606<dd class="description">IPP message</dd>
2607<dt>group</dt>
2608<dd class="description">IPP group</dd>
2609<dt>name</dt>
2610<dd class="description">Name of attribute</dd>
2611<dt>data</dt>
2612<dd class="description">octetString data</dd>
2613<dt>datalen</dt>
2614<dd class="description">Length of data in bytes</dd>
2615</dl>
2616<h4 class="returnvalue">Return Value</h4>
2617<p class="description">New attribute</p>
2618<h3 class="function"><a name="ippAddRange">ippAddRange</a></h3>
2619<p class="description">Add a range of values to an IPP message.</p>
2620<p class="code">
2621<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddRange (<br>
2622&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
79e1d494 2623&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
5a738aea
MS
2624&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2625&nbsp;&nbsp;&nbsp;&nbsp;int lower,<br>
2626&nbsp;&nbsp;&nbsp;&nbsp;int upper<br>
2627);</p>
2628<h4 class="parameters">Parameters</h4>
2629<dl>
2630<dt>ipp</dt>
2631<dd class="description">IPP message</dd>
2632<dt>group</dt>
2633<dd class="description">IPP group</dd>
2634<dt>name</dt>
2635<dd class="description">Name of attribute</dd>
2636<dt>lower</dt>
2637<dd class="description">Lower value</dd>
2638<dt>upper</dt>
2639<dd class="description">Upper value</dd>
2640</dl>
2641<h4 class="returnvalue">Return Value</h4>
2642<p class="description">New attribute</p>
2643<h3 class="function"><a name="ippAddRanges">ippAddRanges</a></h3>
2644<p class="description">Add ranges of values to an IPP message.</p>
2645<p class="code">
2646<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddRanges (<br>
2647&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
79e1d494 2648&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
5a738aea
MS
2649&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2650&nbsp;&nbsp;&nbsp;&nbsp;int num_values,<br>
2651&nbsp;&nbsp;&nbsp;&nbsp;const int *lower,<br>
2652&nbsp;&nbsp;&nbsp;&nbsp;const int *upper<br>
2653);</p>
2654<h4 class="parameters">Parameters</h4>
2655<dl>
2656<dt>ipp</dt>
2657<dd class="description">IPP message</dd>
2658<dt>group</dt>
2659<dd class="description">IPP group</dd>
2660<dt>name</dt>
2661<dd class="description">Name of attribute</dd>
2662<dt>num_values</dt>
2663<dd class="description">Number of values</dd>
2664<dt>lower</dt>
2665<dd class="description">Lower values</dd>
2666<dt>upper</dt>
2667<dd class="description">Upper values</dd>
2668</dl>
2669<h4 class="returnvalue">Return Value</h4>
2670<p class="description">New attribute</p>
2671<h3 class="function"><a name="ippAddResolution">ippAddResolution</a></h3>
2672<p class="description">Add a resolution value to an IPP message.</p>
2673<p class="code">
2674<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddResolution (<br>
2675&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
79e1d494 2676&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
5a738aea 2677&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
79e1d494 2678&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_res_t">ipp_res_t</a> units,<br>
5a738aea
MS
2679&nbsp;&nbsp;&nbsp;&nbsp;int xres,<br>
2680&nbsp;&nbsp;&nbsp;&nbsp;int yres<br>
2681);</p>
2682<h4 class="parameters">Parameters</h4>
2683<dl>
2684<dt>ipp</dt>
2685<dd class="description">IPP message</dd>
2686<dt>group</dt>
2687<dd class="description">IPP group</dd>
2688<dt>name</dt>
2689<dd class="description">Name of attribute</dd>
2690<dt>units</dt>
2691<dd class="description">Units for resolution</dd>
2692<dt>xres</dt>
2693<dd class="description">X resolution</dd>
2694<dt>yres</dt>
2695<dd class="description">Y resolution</dd>
2696</dl>
2697<h4 class="returnvalue">Return Value</h4>
2698<p class="description">New attribute</p>
2699<h3 class="function"><a name="ippAddResolutions">ippAddResolutions</a></h3>
2700<p class="description">Add resolution values to an IPP message.</p>
2701<p class="code">
2702<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddResolutions (<br>
2703&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
79e1d494 2704&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
5a738aea
MS
2705&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2706&nbsp;&nbsp;&nbsp;&nbsp;int num_values,<br>
79e1d494 2707&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_res_t">ipp_res_t</a> units,<br>
5a738aea
MS
2708&nbsp;&nbsp;&nbsp;&nbsp;const int *xres,<br>
2709&nbsp;&nbsp;&nbsp;&nbsp;const int *yres<br>
2710);</p>
2711<h4 class="parameters">Parameters</h4>
2712<dl>
2713<dt>ipp</dt>
2714<dd class="description">IPP message</dd>
2715<dt>group</dt>
2716<dd class="description">IPP group</dd>
2717<dt>name</dt>
2718<dd class="description">Name of attribute</dd>
2719<dt>num_values</dt>
2720<dd class="description">Number of values</dd>
2721<dt>units</dt>
2722<dd class="description">Units for resolution</dd>
2723<dt>xres</dt>
2724<dd class="description">X resolutions</dd>
2725<dt>yres</dt>
2726<dd class="description">Y resolutions</dd>
2727</dl>
2728<h4 class="returnvalue">Return Value</h4>
2729<p class="description">New attribute</p>
2730<h3 class="function"><a name="ippAddSeparator">ippAddSeparator</a></h3>
2731<p class="description">Add a group separator to an IPP message.</p>
2732<p class="code">
2733<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddSeparator (<br>
2734&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp<br>
2735);</p>
2736<h4 class="parameters">Parameters</h4>
2737<dl>
2738<dt>ipp</dt>
2739<dd class="description">IPP message</dd>
2740</dl>
2741<h4 class="returnvalue">Return Value</h4>
2742<p class="description">New attribute</p>
2743<h3 class="function"><a name="ippAddString">ippAddString</a></h3>
2744<p class="description">Add a language-encoded string to an IPP message.</p>
2745<p class="code">
2746<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddString (<br>
2747&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
79e1d494
MS
2748&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
2749&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> type,<br>
5a738aea
MS
2750&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2751&nbsp;&nbsp;&nbsp;&nbsp;const char *charset,<br>
2752&nbsp;&nbsp;&nbsp;&nbsp;const char *value<br>
2753);</p>
2754<h4 class="parameters">Parameters</h4>
2755<dl>
2756<dt>ipp</dt>
2757<dd class="description">IPP message</dd>
2758<dt>group</dt>
2759<dd class="description">IPP group</dd>
2760<dt>type</dt>
2761<dd class="description">Type of attribute</dd>
2762<dt>name</dt>
2763<dd class="description">Name of attribute</dd>
2764<dt>charset</dt>
2765<dd class="description">Character set</dd>
2766<dt>value</dt>
2767<dd class="description">Value</dd>
2768</dl>
2769<h4 class="returnvalue">Return Value</h4>
2770<p class="description">New attribute</p>
2771<h3 class="function"><a name="ippAddStrings">ippAddStrings</a></h3>
2772<p class="description">Add language-encoded strings to an IPP message.</p>
2773<p class="code">
2774<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippAddStrings (<br>
2775&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
79e1d494
MS
2776&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group,<br>
2777&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> type,<br>
5a738aea
MS
2778&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
2779&nbsp;&nbsp;&nbsp;&nbsp;int num_values,<br>
2780&nbsp;&nbsp;&nbsp;&nbsp;const char *charset,<br>
2781&nbsp;&nbsp;&nbsp;&nbsp;const char *const *values<br>
2782);</p>
2783<h4 class="parameters">Parameters</h4>
2784<dl>
2785<dt>ipp</dt>
2786<dd class="description">IPP message</dd>
2787<dt>group</dt>
2788<dd class="description">IPP group</dd>
2789<dt>type</dt>
2790<dd class="description">Type of attribute</dd>
2791<dt>name</dt>
2792<dd class="description">Name of attribute</dd>
2793<dt>num_values</dt>
2794<dd class="description">Number of values</dd>
2795<dt>charset</dt>
2796<dd class="description">Character set</dd>
2797<dt>values</dt>
2798<dd class="description">Values</dd>
2799</dl>
2800<h4 class="returnvalue">Return Value</h4>
2801<p class="description">New attribute</p>
2802<h3 class="function"><a name="ippDateToTime">ippDateToTime</a></h3>
2803<p class="description">Convert from RFC 1903 Date/Time format to UNIX time
2804in seconds.</p>
2805<p class="code">
2806time_t ippDateToTime (<br>
2807&nbsp;&nbsp;&nbsp;&nbsp;const <a href="#ipp_uchar_t">ipp_uchar_t</a> *date<br>
2808);</p>
2809<h4 class="parameters">Parameters</h4>
2810<dl>
2811<dt>date</dt>
2812<dd class="description">RFC 1903 date info</dd>
2813</dl>
2814<h4 class="returnvalue">Return Value</h4>
2815<p class="description">UNIX time value</p>
2816<h3 class="function"><a name="ippDelete">ippDelete</a></h3>
2817<p class="description">Delete an IPP message.</p>
2818<p class="code">
2819void ippDelete (<br>
2820&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp<br>
2821);</p>
2822<h4 class="parameters">Parameters</h4>
2823<dl>
2824<dt>ipp</dt>
2825<dd class="description">IPP message</dd>
2826</dl>
2827<h3 class="function"><span class="info">&nbsp;CUPS 1.1.19&nbsp;</span><a name="ippDeleteAttribute">ippDeleteAttribute</a></h3>
2828<p class="description">Delete a single attribute in an IPP message.</p>
2829<p class="code">
2830void ippDeleteAttribute (<br>
2831&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
2832&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_attribute_t">ipp_attribute_t</a> *attr<br>
2833);</p>
2834<h4 class="parameters">Parameters</h4>
2835<dl>
2836<dt>ipp</dt>
2837<dd class="description">IPP message</dd>
2838<dt>attr</dt>
2839<dd class="description">Attribute to delete</dd>
2840</dl>
2841<h3 class="function"><a name="ippErrorString">ippErrorString</a></h3>
2842<p class="description">Return a name for the given status code.</p>
2843<p class="code">
2844const char *ippErrorString (<br>
2845&nbsp;&nbsp;&nbsp;&nbsp;ipp_status_t error<br>
2846);</p>
2847<h4 class="parameters">Parameters</h4>
2848<dl>
2849<dt>error</dt>
2850<dd class="description">Error status</dd>
2851</dl>
2852<h4 class="returnvalue">Return Value</h4>
2853<p class="description">Text string</p>
2854<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="ippErrorValue">ippErrorValue</a></h3>
2855<p class="description">Return a status code for the given name.</p>
2856<p class="code">
2857ipp_status_t ippErrorValue (<br>
2858&nbsp;&nbsp;&nbsp;&nbsp;const char *name<br>
2859);</p>
2860<h4 class="parameters">Parameters</h4>
2861<dl>
2862<dt>name</dt>
2863<dd class="description">Name</dd>
2864</dl>
2865<h4 class="returnvalue">Return Value</h4>
2866<p class="description">IPP status code</p>
2867<h3 class="function"><a name="ippFindAttribute">ippFindAttribute</a></h3>
2868<p class="description">Find a named attribute in a request...</p>
2869<p class="code">
2870<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippFindAttribute (<br>
2871&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
2872&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
79e1d494 2873&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> type<br>
5a738aea
MS
2874);</p>
2875<h4 class="parameters">Parameters</h4>
2876<dl>
2877<dt>ipp</dt>
2878<dd class="description">IPP message</dd>
2879<dt>name</dt>
2880<dd class="description">Name of attribute</dd>
2881<dt>type</dt>
2882<dd class="description">Type of attribute</dd>
2883</dl>
2884<h4 class="returnvalue">Return Value</h4>
2885<p class="description">Matching attribute</p>
2886<h3 class="function"><a name="ippFindNextAttribute">ippFindNextAttribute</a></h3>
2887<p class="description">Find the next named attribute in a request...</p>
2888<p class="code">
2889<a href="#ipp_attribute_t">ipp_attribute_t</a> *ippFindNextAttribute (<br>
2890&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp,<br>
2891&nbsp;&nbsp;&nbsp;&nbsp;const char *name,<br>
79e1d494 2892&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> type<br>
5a738aea
MS
2893);</p>
2894<h4 class="parameters">Parameters</h4>
2895<dl>
2896<dt>ipp</dt>
2897<dd class="description">IPP message</dd>
2898<dt>name</dt>
2899<dd class="description">Name of attribute</dd>
2900<dt>type</dt>
2901<dd class="description">Type of attribute</dd>
2902</dl>
2903<h4 class="returnvalue">Return Value</h4>
2904<p class="description">Matching attribute</p>
2905<h3 class="function"><a name="ippLength">ippLength</a></h3>
2906<p class="description">Compute the length of an IPP message.</p>
2907<p class="code">
2908size_t ippLength (<br>
2909&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp<br>
2910);</p>
2911<h4 class="parameters">Parameters</h4>
2912<dl>
2913<dt>ipp</dt>
2914<dd class="description">IPP message</dd>
2915</dl>
2916<h4 class="returnvalue">Return Value</h4>
2917<p class="description">Size of IPP message</p>
2918<h3 class="function"><a name="ippNew">ippNew</a></h3>
2919<p class="description">Allocate a new IPP message.</p>
2920<p class="code">
2921<a href="#ipp_t">ipp_t</a> *ippNew (void);</p>
2922<h4 class="returnvalue">Return Value</h4>
2923<p class="description">New IPP message</p>
2924<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="ippNewRequest">ippNewRequest</a></h3>
2925<p class="description">Allocate a new IPP request message.</p>
2926<p class="code">
2927<a href="#ipp_t">ipp_t</a> *ippNewRequest (<br>
79e1d494 2928&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_op_t">ipp_op_t</a> op<br>
5a738aea
MS
2929);</p>
2930<h4 class="parameters">Parameters</h4>
2931<dl>
2932<dt>op</dt>
2933<dd class="description">Operation code</dd>
2934</dl>
2935<h4 class="returnvalue">Return Value</h4>
2936<p class="description">IPP request message</p>
2937<h4 class="discussion">Discussion</h4>
2938<p class="discussion">The new request message is initialized with the attributes-charset and
ecdc0628 2939attributes-natural-language attributes added. The
2940attributes-natural-language value is derived from the current locale.
2941
5a738aea
MS
2942</p>
2943<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="ippOpString">ippOpString</a></h3>
2944<p class="description">Return a name for the given operation id.</p>
2945<p class="code">
2946const char *ippOpString (<br>
79e1d494 2947&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_op_t">ipp_op_t</a> op<br>
5a738aea
MS
2948);</p>
2949<h4 class="parameters">Parameters</h4>
2950<dl>
2951<dt>op</dt>
2952<dd class="description">Operation ID</dd>
2953</dl>
2954<h4 class="returnvalue">Return Value</h4>
2955<p class="description">Name</p>
2956<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="ippOpValue">ippOpValue</a></h3>
2957<p class="description">Return an operation id for the given name.</p>
2958<p class="code">
79e1d494 2959<a href="#ipp_op_t">ipp_op_t</a> ippOpValue (<br>
5a738aea
MS
2960&nbsp;&nbsp;&nbsp;&nbsp;const char *name<br>
2961);</p>
2962<h4 class="parameters">Parameters</h4>
2963<dl>
2964<dt>name</dt>
2965<dd class="description">Textual name</dd>
2966</dl>
2967<h4 class="returnvalue">Return Value</h4>
2968<p class="description">Operation ID</p>
2969<h3 class="function"><a name="ippPort">ippPort</a></h3>
2970<p class="description">Return the default IPP port number.</p>
2971<p class="code">
2972int ippPort (void);</p>
2973<h4 class="returnvalue">Return Value</h4>
2974<p class="description">Port number</p>
2975<h3 class="function"><a name="ippRead">ippRead</a></h3>
2976<p class="description">Read data for an IPP message from a HTTP connection.</p>
2977<p class="code">
79e1d494 2978<a href="#ipp_state_t">ipp_state_t</a> ippRead (<br>
5a738aea
MS
2979&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
2980&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp<br>
2981);</p>
2982<h4 class="parameters">Parameters</h4>
2983<dl>
2984<dt>http</dt>
2985<dd class="description">HTTP connection</dd>
2986<dt>ipp</dt>
2987<dd class="description">IPP data</dd>
2988</dl>
2989<h4 class="returnvalue">Return Value</h4>
2990<p class="description">Current state</p>
2991<h3 class="function"><span class="info">&nbsp;CUPS 1.1.19&nbsp;</span><a name="ippReadFile">ippReadFile</a></h3>
2992<p class="description">Read data for an IPP message from a file.</p>
2993<p class="code">
79e1d494 2994<a href="#ipp_state_t">ipp_state_t</a> ippReadFile (<br>
5a738aea
MS
2995&nbsp;&nbsp;&nbsp;&nbsp;int fd,<br>
2996&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp<br>
2997);</p>
2998<h4 class="parameters">Parameters</h4>
2999<dl>
3000<dt>fd</dt>
3001<dd class="description">HTTP data</dd>
3002<dt>ipp</dt>
3003<dd class="description">IPP data</dd>
3004</dl>
3005<h4 class="returnvalue">Return Value</h4>
3006<p class="description">Current state</p>
3007<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="ippReadIO">ippReadIO</a></h3>
3008<p class="description">Read data for an IPP message.</p>
3009<p class="code">
79e1d494 3010<a href="#ipp_state_t">ipp_state_t</a> ippReadIO (<br>
5a738aea
MS
3011&nbsp;&nbsp;&nbsp;&nbsp;void *src,<br>
3012&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_iocb_t">ipp_iocb_t</a> cb,<br>
3013&nbsp;&nbsp;&nbsp;&nbsp;int blocking,<br>
3014&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *parent,<br>
3015&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp<br>
3016);</p>
3017<h4 class="parameters">Parameters</h4>
3018<dl>
3019<dt>src</dt>
3020<dd class="description">Data source</dd>
3021<dt>cb</dt>
3022<dd class="description">Read callback function</dd>
3023<dt>blocking</dt>
3024<dd class="description">Use blocking IO?</dd>
3025<dt>parent</dt>
3026<dd class="description">Parent request, if any</dd>
3027<dt>ipp</dt>
3028<dd class="description">IPP data</dd>
3029</dl>
3030<h4 class="returnvalue">Return Value</h4>
3031<p class="description">Current state</p>
3032<h3 class="function"><a name="ippSetPort">ippSetPort</a></h3>
3033<p class="description">Set the default port number.</p>
3034<p class="code">
3035void ippSetPort (<br>
3036&nbsp;&nbsp;&nbsp;&nbsp;int p<br>
3037);</p>
3038<h4 class="parameters">Parameters</h4>
3039<dl>
3040<dt>p</dt>
3041<dd class="description">Port number to use</dd>
3042</dl>
3043<h3 class="function"><a name="ippTimeToDate">ippTimeToDate</a></h3>
3044<p class="description">Convert from UNIX time to RFC 1903 format.</p>
3045<p class="code">
3046const <a href="#ipp_uchar_t">ipp_uchar_t</a> *ippTimeToDate (<br>
3047&nbsp;&nbsp;&nbsp;&nbsp;time_t t<br>
3048);</p>
3049<h4 class="parameters">Parameters</h4>
3050<dl>
3051<dt>t</dt>
3052<dd class="description">UNIX time value</dd>
3053</dl>
3054<h4 class="returnvalue">Return Value</h4>
3055<p class="description">RFC-1903 date/time data</p>
3056<h3 class="function"><a name="ippWrite">ippWrite</a></h3>
3057<p class="description">Write data for an IPP message to a HTTP connection.</p>
3058<p class="code">
79e1d494 3059<a href="#ipp_state_t">ipp_state_t</a> ippWrite (<br>
5a738aea
MS
3060&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_t">http_t</a> *http,<br>
3061&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp<br>
3062);</p>
3063<h4 class="parameters">Parameters</h4>
3064<dl>
3065<dt>http</dt>
3066<dd class="description">HTTP connection</dd>
3067<dt>ipp</dt>
3068<dd class="description">IPP data</dd>
3069</dl>
3070<h4 class="returnvalue">Return Value</h4>
3071<p class="description">Current state</p>
3072<h3 class="function"><span class="info">&nbsp;CUPS 1.1.19&nbsp;</span><a name="ippWriteFile">ippWriteFile</a></h3>
3073<p class="description">Write data for an IPP message to a file.</p>
3074<p class="code">
79e1d494 3075<a href="#ipp_state_t">ipp_state_t</a> ippWriteFile (<br>
5a738aea
MS
3076&nbsp;&nbsp;&nbsp;&nbsp;int fd,<br>
3077&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp<br>
3078);</p>
3079<h4 class="parameters">Parameters</h4>
3080<dl>
3081<dt>fd</dt>
3082<dd class="description">HTTP data</dd>
3083<dt>ipp</dt>
3084<dd class="description">IPP data</dd>
3085</dl>
3086<h4 class="returnvalue">Return Value</h4>
3087<p class="description">Current state</p>
3088<h3 class="function"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="ippWriteIO">ippWriteIO</a></h3>
3089<p class="description">Write data for an IPP message.</p>
3090<p class="code">
79e1d494 3091<a href="#ipp_state_t">ipp_state_t</a> ippWriteIO (<br>
5a738aea
MS
3092&nbsp;&nbsp;&nbsp;&nbsp;void *dst,<br>
3093&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_iocb_t">ipp_iocb_t</a> cb,<br>
3094&nbsp;&nbsp;&nbsp;&nbsp;int blocking,<br>
3095&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *parent,<br>
3096&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *ipp<br>
3097);</p>
3098<h4 class="parameters">Parameters</h4>
3099<dl>
3100<dt>dst</dt>
3101<dd class="description">Destination</dd>
3102<dt>cb</dt>
3103<dd class="description">Write callback function</dd>
3104<dt>blocking</dt>
3105<dd class="description">Use blocking IO?</dd>
3106<dt>parent</dt>
3107<dd class="description">Parent IPP message</dd>
3108<dt>ipp</dt>
3109<dd class="description">IPP data</dd>
3110</dl>
3111<h4 class="returnvalue">Return Value</h4>
3112<p class="description">Current state</p>
3113<h2 class="title"><a name="TYPES">Data Types</a></h2>
3114<h3 class="typedef"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="http_addrlist_t">http_addrlist_t</a></h3>
3115<p class="description">Socket address list, which is
ef416fc2 3116used to enumerate all of the
3117addresses that are associated
5a738aea
MS
3118with a hostname. </p>
3119<p class="code">
3120typedef struct <a href="#http_addrlist_s">http_addrlist_s</a> / http_addrlist_t;
3121</p>
3122<h3 class="typedef"><a name="http_auth_t">http_auth_t</a></h3>
3123<p class="description">HTTP authentication types</p>
3124<p class="code">
3125typedef enum <a href="#http_auth_e">http_auth_e</a> http_auth_t;
3126</p>
3127<h3 class="typedef"><a name="http_encoding_t">http_encoding_t</a></h3>
3128<p class="description">HTTP transfer encoding values</p>
3129<p class="code">
3130typedef enum <a href="#http_encoding_e">http_encoding_e</a> http_encoding_t;
3131</p>
3132<h3 class="typedef"><a name="http_encryption_t">http_encryption_t</a></h3>
3133<p class="description">HTTP encryption values</p>
3134<p class="code">
3135typedef enum <a href="#http_encryption_e">http_encryption_e</a> http_encryption_t;
3136</p>
79e1d494
MS
3137<h3 class="typedef"><a name="http_field_t">http_field_t</a></h3>
3138<p class="description">HTTP field names</p>
3139<p class="code">
3140typedef enum <a href="#http_field_e">http_field_e</a> http_field_t;
3141</p>
3142<h3 class="typedef"><a name="http_keepalive_t">http_keepalive_t</a></h3>
3143<p class="description">Types and structures...</p>
3144<p class="code">
3145typedef enum <a href="#http_keepalive_e">http_keepalive_e</a> http_keepalive_t;
3146</p>
3147<h3 class="typedef"><a name="http_status_t">http_status_t</a></h3>
3148<p class="description">HTTP status codes</p>
3149<p class="code">
3150typedef enum <a href="#http_status_e">http_status_e</a> http_status_t;
3151</p>
5a738aea
MS
3152<h3 class="typedef"><a name="http_t">http_t</a></h3>
3153<p class="description">HTTP connection type</p>
3154<p class="code">
ecdc0628 3155typedef struct _http_s http_t;
5a738aea 3156</p>
79e1d494
MS
3157<h3 class="typedef"><a name="http_uri_coding_t">http_uri_coding_t</a></h3>
3158<p class="description">HTTP version numbers</p>
3159<p class="code">
3160typedef enum <a href="#http_uri_coding_e">http_uri_coding_e</a> http_uri_coding_t;
3161</p>
3162<h3 class="typedef"><a name="http_uri_status_t">http_uri_status_t</a></h3>
3163<p class="description">URI en/decode flags</p>
3164<p class="code">
3165typedef enum <a href="#http_uri_status_e">http_uri_status_e</a> http_uri_status_t;
3166</p>
3167<h3 class="typedef"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="http_version_t">http_version_t</a></h3>
3168<p class="description">Socket address union, which
3169makes using IPv6 and other
3170address types easier and
3171more portable. </p>
3172<p class="code">
3173typedef enum <a href="#http_version_e">http_version_e</a> http_version_t;
3174</p>
5a738aea
MS
3175<h3 class="typedef"><a name="ipp_attribute_t">ipp_attribute_t</a></h3>
3176<p class="description">Attribute</p>
3177<p class="code">
3178typedef struct <a href="#ipp_attribute_s">ipp_attribute_s</a> ipp_attribute_t;
3179</p>
79e1d494
MS
3180<h3 class="typedef"><a name="ipp_finish_t">ipp_finish_t</a></h3>
3181<p class="description">Orientation...</p>
3182<p class="code">
3183typedef enum <a href="#ipp_finish_e">ipp_finish_e</a> ipp_finish_t;
3184</p>
5a738aea
MS
3185<h3 class="typedef"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="ipp_iocb_t">ipp_iocb_t</a></h3>
3186<p class="description">IPP IO Callback Function </p>
3187<p class="code">
3188typedef ssize_t (*ipp_iocb_t)(void *, <a href="#ipp_uchar_t">ipp_uchar_t</a> *, size_t);
3189</p>
79e1d494
MS
3190<h3 class="typedef"><a name="ipp_jstate_t">ipp_jstate_t</a></h3>
3191<p class="description">Printer States....</p>
3192<p class="code">
3193typedef enum <a href="#ipp_jstate_e">ipp_jstate_e</a> ipp_jstate_t;
3194</p>
3195<h3 class="typedef"><a name="ipp_op_t">ipp_op_t</a></h3>
3196<p class="description">Old names for the operations</p>
3197<p class="code">
3198typedef enum <a href="#ipp_op_e">ipp_op_e</a> ipp_op_t;
3199</p>
3200<h3 class="typedef"><a name="ipp_orient_t">ipp_orient_t</a></h3>
3201<p class="description">Qualities...</p>
3202<p class="code">
3203typedef enum <a href="#ipp_orient_e">ipp_orient_e</a> ipp_orient_t;
3204</p>
3205<h3 class="typedef"><a name="ipp_pstate_t">ipp_pstate_t</a></h3>
3206<p class="description">IPP states...</p>
3207<p class="code">
3208typedef enum <a href="#ipp_pstate_e">ipp_pstate_e</a> ipp_pstate_t;
3209</p>
3210<h3 class="typedef"><a name="ipp_quality_t">ipp_quality_t</a></h3>
3211<p class="description">Job States....</p>
3212<p class="code">
3213typedef enum <a href="#ipp_quality_e">ipp_quality_e</a> ipp_quality_t;
3214</p>
5a738aea
MS
3215<h3 class="typedef"><a name="ipp_request_t">ipp_request_t</a></h3>
3216<p class="description">Request Header</p>
3217<p class="code">
3218typedef union <a href="#ipp_request_u">ipp_request_u</a> ipp_request_t;
3219</p>
79e1d494
MS
3220<h3 class="typedef"><a name="ipp_res_t">ipp_res_t</a></h3>
3221<p class="description">Types and structures...</p>
3222<p class="code">
3223typedef enum <a href="#ipp_res_e">ipp_res_e</a> ipp_res_t;
3224</p>
3225<h3 class="typedef"><a name="ipp_state_t">ipp_state_t</a></h3>
3226<p class="description">IPP operations...</p>
3227<p class="code">
3228typedef enum <a href="#ipp_state_e">ipp_state_e</a> ipp_state_t;
3229</p>
5a738aea
MS
3230<h3 class="typedef"><a name="ipp_t">ipp_t</a></h3>
3231<p class="description">Attribute Value</p>
3232<p class="code">
3233typedef struct <a href="#ipp_s">ipp_s</a> ipp_t;
3234</p>
3235<h3 class="typedef"><a name="ipp_uchar_t">ipp_uchar_t</a></h3>
3236<p class="description">IPP status codes...</p>
3237<p class="code">
ecdc0628 3238typedef typedef unsigned char ipp_uchar_t;
5a738aea 3239</p>
79e1d494
MS
3240<h3 class="typedef"><a name="ipp_tag_t">ipp_tag_t</a></h3>
3241<p class="description">Format tags for attributes...</p>
3242<p class="code">
3243typedef enum <a href="#ipp_tag_e">ipp_tag_e</a> ipp_tag_t;
3244</p>
5a738aea
MS
3245<h3 class="typedef"><a name="ipp_value_t">ipp_value_t</a></h3>
3246<p class="description">New in CUPS 1.1.19</p>
3247<p class="code">
3248typedef union <a href="#ipp_value_u">ipp_value_u</a> ipp_value_t;
3249</p>
3250<h2 class="title"><a name="STRUCTURES">Structures</a></h2>
3251<h3 class="struct"><span class="info">&nbsp;CUPS 1.2&nbsp;</span><a name="http_addrlist_s">http_addrlist_s</a></h3>
3252<p class="description">Socket address list, which is
3253used to enumerate all of the
3254addresses that are associated
3255with a hostname. </p>
3256<p class="code">struct http_addrlist_s {<br>
3257&nbsp;&nbsp;&nbsp;&nbsp;<a href="#http_addr_t">http_addr_t</a> addr;<br>
3258&nbsp;&nbsp;&nbsp;&nbsp;struct <a href="#http_addrlist_s">http_addrlist_s</a> *next;<br>
3259};</p>
3260<h4 class="members">Members</h4>
3261<dl>
3262<dt>addr </dt>
3263<dd class="description">Address</dd>
3264<dt>next </dt>
3265<dd class="description">Pointer to next address in list</dd>
3266</dl>
3267<h3 class="struct"><a name="ipp_attribute_s">ipp_attribute_s</a></h3>
3268<p class="description">Attribute</p>
3269<p class="code">struct ipp_attribute_s {<br>
3270&nbsp;&nbsp;&nbsp;&nbsp;char *name;<br>
3271&nbsp;&nbsp;&nbsp;&nbsp;struct <a href="#ipp_attribute_s">ipp_attribute_s</a> *next;<br>
3272&nbsp;&nbsp;&nbsp;&nbsp;int num_values;<br>
79e1d494 3273&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> group_tag, value_tag;<br>
5a738aea
MS
3274&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_value_t">ipp_value_t</a> values[1];<br>
3275};</p>
3276<h4 class="members">Members</h4>
3277<dl>
3278<dt>name </dt>
3279<dd class="description">Name of attribute</dd>
3280<dt>next </dt>
3281<dd class="description">Next attribute in list</dd>
3282<dt>num_values </dt>
3283<dd class="description">Number of values</dd>
3284<dt>value_tag </dt>
3285<dd class="description">What type of value is it?</dd>
3286<dt>values[1] </dt>
3287<dd class="description">Values</dd>
3288</dl>
3289<h3 class="struct"><a name="ipp_s">ipp_s</a></h3>
3290<p class="description">IPP Request/Response/Notification</p>
3291<p class="code">struct ipp_s {<br>
3292&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_attribute_t">ipp_attribute_t</a> *attrs;<br>
3293&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_attribute_t">ipp_attribute_t</a> *current;<br>
79e1d494 3294&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_tag_t">ipp_tag_t</a> curtag;<br>
5a738aea
MS
3295&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_attribute_t">ipp_attribute_t</a> *last;<br>
3296&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_attribute_t">ipp_attribute_t</a> *prev;<br>
3297&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_request_t">ipp_request_t</a> request;<br>
79e1d494 3298&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_state_t">ipp_state_t</a> state;<br>
5a738aea
MS
3299};</p>
3300<h4 class="members">Members</h4>
3301<dl>
3302<dt>attrs </dt>
3303<dd class="description">Attributes</dd>
3304<dt>current </dt>
3305<dd class="description">Current attribute (for read/write)</dd>
3306<dt>curtag </dt>
3307<dd class="description">Current attribute group tag</dd>
3308<dt>last </dt>
3309<dd class="description">Last attribute in list</dd>
3310<dt>prev </dt>
3311<dd class="description">Previous attribute (for read)</dd>
3312<dt>request </dt>
3313<dd class="description">Request header</dd>
3314<dt>state </dt>
3315<dd class="description">State of request</dd>
3316</dl>
3317<h2 class="title"><a name="UNIONS">Unions</a></h2>
3318<h3 class="union"><a name="ipp_request_u">ipp_request_u</a></h3>
3319<p class="description">Request Header</p>
3320<p class="code">union ipp_request_u {<br>
3321};</p>
3322<h4 class="members">Members</h4>
3323<dl>
3324</dl>
3325<h3 class="union"><a name="ipp_value_u">ipp_value_u</a></h3>
3326<p class="description">New in CUPS 1.1.19</p>
3327<p class="code">union ipp_value_u {<br>
3328&nbsp;&nbsp;&nbsp;&nbsp;char boolean;<br>
3329&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_t">ipp_t</a> *collection;<br>
3330&nbsp;&nbsp;&nbsp;&nbsp;<a href="#ipp_uchar_t">ipp_uchar_t</a> date[11];<br>
3331&nbsp;&nbsp;&nbsp;&nbsp;int integer;<br>
3332};</p>
3333<h4 class="members">Members</h4>
3334<dl>
3335<dt>boolean </dt>
3336<dd class="description">Boolean value</dd>
3337<dt>collection </dt>
3338<dd class="description">Collection value</dd>
3339<dt>date[11] </dt>
3340<dd class="description">Date/time value</dd>
3341<dt>integer </dt>
3342<dd class="description">Integer/enumerated value</dd>
3343</dl>
3344<h2 class="title"><a name="ENUMERATIONS">Constants</a></h2>
3345<h3 class="enumeration"><a name="http_auth_e">http_auth_e</a></h3>
3346<p class="description">HTTP authentication types</p>
3347<h4 class="constants">Constants</h4>
3348<dl>
3349<dt>HTTP_AUTH_BASIC </dt>
3350<dd class="description">Basic authentication in use</dd>
3351<dt>HTTP_AUTH_MD5 </dt>
3352<dd class="description">Digest authentication in use</dd>
3353<dt>HTTP_AUTH_MD5_INT </dt>
3354<dd class="description">Digest authentication in use for body</dd>
3355<dt>HTTP_AUTH_MD5_SESS </dt>
3356<dd class="description">MD5-session authentication in use</dd>
3357<dt>HTTP_AUTH_MD5_SESS_INT </dt>
3358<dd class="description">MD5-session authentication in use for body</dd>
3359<dt>HTTP_AUTH_NEGOTIATE <span class="info">&nbsp;CUPS 1.3&nbsp;</span></dt>
3360<dd class="description">GSSAPI authentication in use </dd>
3361<dt>HTTP_AUTH_NONE </dt>
3362<dd class="description">No authentication in use</dd>
3363</dl>
3364<h3 class="enumeration"><a name="http_encoding_e">http_encoding_e</a></h3>
3365<p class="description">HTTP transfer encoding values</p>
3366<h4 class="constants">Constants</h4>
3367<dl>
3368<dt>HTTP_ENCODE_CHUNKED </dt>
3369<dd class="description">Data is chunked</dd>
3370<dt>HTTP_ENCODE_FIELDS </dt>
3371<dd class="description">Sending HTTP fields</dd>
3372<dt>HTTP_ENCODE_LENGTH </dt>
3373<dd class="description">Data is sent with Content-Length</dd>
3374</dl>
3375<h3 class="enumeration"><a name="http_encryption_e">http_encryption_e</a></h3>
3376<p class="description">HTTP encryption values</p>
3377<h4 class="constants">Constants</h4>
3378<dl>
3379<dt>HTTP_ENCRYPT_ALWAYS </dt>
3380<dd class="description">Always encrypt (SSL)</dd>
3381<dt>HTTP_ENCRYPT_IF_REQUESTED </dt>
3382<dd class="description">Encrypt if requested (TLS upgrade)</dd>
3383<dt>HTTP_ENCRYPT_NEVER </dt>
3384<dd class="description">Never encrypt</dd>
3385<dt>HTTP_ENCRYPT_REQUIRED </dt>
3386<dd class="description">Encryption is required (TLS upgrade)</dd>
3387</dl>
3388<h3 class="enumeration"><a name="http_field_e">http_field_e</a></h3>
3389<p class="description">HTTP field names</p>
3390<h4 class="constants">Constants</h4>
3391<dl>
3392<dt>HTTP_FIELD_ACCEPT_LANGUAGE </dt>
3393<dd class="description">Accept-Language field</dd>
3394<dt>HTTP_FIELD_ACCEPT_RANGES </dt>
3395<dd class="description">Accept-Ranges field</dd>
3396<dt>HTTP_FIELD_AUTHORIZATION </dt>
3397<dd class="description">Authorization field</dd>
3398<dt>HTTP_FIELD_CONNECTION </dt>
3399<dd class="description">Connection field</dd>
3400<dt>HTTP_FIELD_CONTENT_ENCODING </dt>
3401<dd class="description">Content-Encoding field</dd>
3402<dt>HTTP_FIELD_CONTENT_LANGUAGE </dt>
3403<dd class="description">Content-Language field</dd>
3404<dt>HTTP_FIELD_CONTENT_LENGTH </dt>
3405<dd class="description">Content-Length field</dd>
3406<dt>HTTP_FIELD_CONTENT_LOCATION </dt>
3407<dd class="description">Content-Location field</dd>
3408<dt>HTTP_FIELD_CONTENT_MD5 </dt>
3409<dd class="description">Content-MD5 field</dd>
3410<dt>HTTP_FIELD_CONTENT_RANGE </dt>
3411<dd class="description">Content-Range field</dd>
3412<dt>HTTP_FIELD_CONTENT_TYPE </dt>
3413<dd class="description">Content-Type field</dd>
3414<dt>HTTP_FIELD_CONTENT_VERSION </dt>
3415<dd class="description">Content-Version field</dd>
3416<dt>HTTP_FIELD_DATE </dt>
3417<dd class="description">Date field</dd>
3418<dt>HTTP_FIELD_HOST </dt>
3419<dd class="description">Host field</dd>
3420<dt>HTTP_FIELD_IF_MODIFIED_SINCE </dt>
3421<dd class="description">If-Modified-Since field</dd>
3422<dt>HTTP_FIELD_IF_UNMODIFIED_SINCE </dt>
3423<dd class="description">If-Unmodified-Since field</dd>
3424<dt>HTTP_FIELD_KEEP_ALIVE </dt>
3425<dd class="description">Keep-Alive field</dd>
3426<dt>HTTP_FIELD_LAST_MODIFIED </dt>
3427<dd class="description">Last-Modified field</dd>
3428<dt>HTTP_FIELD_LINK </dt>
3429<dd class="description">Link field</dd>
3430<dt>HTTP_FIELD_LOCATION </dt>
3431<dd class="description">Location field</dd>
3432<dt>HTTP_FIELD_MAX </dt>
3433<dd class="description">Maximum field index</dd>
3434<dt>HTTP_FIELD_RANGE </dt>
3435<dd class="description">Range field</dd>
3436<dt>HTTP_FIELD_REFERER </dt>
3437<dd class="description">Referer field</dd>
3438<dt>HTTP_FIELD_RETRY_AFTER </dt>
3439<dd class="description">Retry-After field</dd>
3440<dt>HTTP_FIELD_TRANSFER_ENCODING </dt>
3441<dd class="description">Transfer-Encoding field</dd>
3442<dt>HTTP_FIELD_UNKNOWN </dt>
3443<dd class="description">Unknown field</dd>
3444<dt>HTTP_FIELD_UPGRADE </dt>
3445<dd class="description">Upgrade field</dd>
3446<dt>HTTP_FIELD_USER_AGENT </dt>
3447<dd class="description">User-Agent field</dd>
3448<dt>HTTP_FIELD_WWW_AUTHENTICATE </dt>
3449<dd class="description">WWW-Authenticate field</dd>
3450</dl>
3451<h3 class="enumeration"><a name="http_keepalive_e">http_keepalive_e</a></h3>
3452<p class="description">Types and structures...</p>
3453<h4 class="constants">Constants</h4>
3454<dl>
3455<dt>HTTP_KEEPALIVE_OFF </dt>
3456<dd class="description">No keep alive support</dd>
3457<dt>HTTP_KEEPALIVE_ON </dt>
3458<dd class="description">Use keep alive</dd>
3459</dl>
3460<h3 class="enumeration"><a name="http_state_e">http_state_e</a></h3>
3461<p class="description"></p>
3462<h4 class="constants">Constants</h4>
3463<dl>
3464<dt>HTTP_CLOSE </dt>
3465<dd class="description">CLOSE command, waiting for blank line</dd>
3466<dt>HTTP_DELETE </dt>
3467<dd class="description">DELETE command, waiting for blank line</dd>
3468<dt>HTTP_GET </dt>
3469<dd class="description">GET command, waiting for blank line</dd>
3470<dt>HTTP_GET_SEND </dt>
3471<dd class="description">GET command, sending data</dd>
3472<dt>HTTP_HEAD </dt>
3473<dd class="description">HEAD command, waiting for blank line</dd>
3474<dt>HTTP_OPTIONS </dt>
3475<dd class="description">OPTIONS command, waiting for blank line</dd>
3476<dt>HTTP_POST </dt>
3477<dd class="description">POST command, waiting for blank line</dd>
3478<dt>HTTP_POST_RECV </dt>
3479<dd class="description">POST command, receiving data</dd>
3480<dt>HTTP_POST_SEND </dt>
3481<dd class="description">POST command, sending data</dd>
3482<dt>HTTP_PUT </dt>
3483<dd class="description">PUT command, waiting for blank line</dd>
3484<dt>HTTP_PUT_RECV </dt>
3485<dd class="description">PUT command, receiving data</dd>
3486<dt>HTTP_STATUS </dt>
3487<dd class="description">Command complete, sending status</dd>
3488<dt>HTTP_TRACE </dt>
3489<dd class="description">TRACE command, waiting for blank line</dd>
3490<dt>HTTP_WAITING </dt>
3491<dd class="description">Waiting for command</dd>
3492</dl>
3493<h3 class="enumeration"><a name="http_status_e">http_status_e</a></h3>
3494<p class="description">HTTP status codes</p>
3495<h4 class="constants">Constants</h4>
3496<dl>
3497<dt>HTTP_ACCEPTED </dt>
3498<dd class="description">DELETE command was successful</dd>
3499<dt>HTTP_BAD_GATEWAY </dt>
3500<dd class="description">Bad gateway</dd>
3501<dt>HTTP_BAD_REQUEST </dt>
3502<dd class="description">Bad request</dd>
3503<dt>HTTP_CONFLICT </dt>
3504<dd class="description">Request is self-conflicting</dd>
3505<dt>HTTP_CONTINUE </dt>
3506<dd class="description">Everything OK, keep going...</dd>
3507<dt>HTTP_CREATED </dt>
3508<dd class="description">PUT command was successful</dd>
3509<dt>HTTP_ERROR </dt>
3510<dd class="description">An error response from httpXxxx()</dd>
3511<dt>HTTP_EXPECTATION_FAILED </dt>
3512<dd class="description">The expectation given in an Expect header field was not met</dd>
3513<dt>HTTP_FORBIDDEN </dt>
3514<dd class="description">Forbidden to access this URI</dd>
3515<dt>HTTP_GATEWAY_TIMEOUT </dt>
3516<dd class="description">Gateway connection timed out</dd>
3517<dt>HTTP_GONE </dt>
3518<dd class="description">Server has gone away</dd>
3519<dt>HTTP_LENGTH_REQUIRED </dt>
3520<dd class="description">A content length or encoding is required</dd>
3521<dt>HTTP_METHOD_NOT_ALLOWED </dt>
3522<dd class="description">Method is not allowed</dd>
3523<dt>HTTP_MOVED_PERMANENTLY </dt>
3524<dd class="description">Document has moved permanently</dd>
3525<dt>HTTP_MOVED_TEMPORARILY </dt>
3526<dd class="description">Document has moved temporarily</dd>
3527<dt>HTTP_MULTIPLE_CHOICES </dt>
3528<dd class="description">Multiple files match request</dd>
3529<dt>HTTP_NOT_ACCEPTABLE </dt>
3530<dd class="description">Not Acceptable</dd>
3531<dt>HTTP_NOT_AUTHORITATIVE </dt>
3532<dd class="description">Information isn't authoritative</dd>
3533<dt>HTTP_NOT_FOUND </dt>
3534<dd class="description">URI was not found</dd>
3535<dt>HTTP_NOT_IMPLEMENTED </dt>
3536<dd class="description">Feature not implemented</dd>
3537<dt>HTTP_NOT_MODIFIED </dt>
3538<dd class="description">File not modified</dd>
3539<dt>HTTP_NOT_SUPPORTED </dt>
3540<dd class="description">HTTP version not supported</dd>
3541<dt>HTTP_NO_CONTENT </dt>
3542<dd class="description">Successful command, no new data</dd>
3543<dt>HTTP_OK </dt>
3544<dd class="description">OPTIONS/GET/HEAD/POST/TRACE command was successful</dd>
3545<dt>HTTP_PARTIAL_CONTENT </dt>
3546<dd class="description">Only a partial file was recieved/sent</dd>
3547<dt>HTTP_PAYMENT_REQUIRED </dt>
3548<dd class="description">Payment required</dd>
3549<dt>HTTP_PRECONDITION </dt>
3550<dd class="description">Precondition failed</dd>
3551<dt>HTTP_PROXY_AUTHENTICATION </dt>
3552<dd class="description">Proxy Authentication is Required</dd>
3553<dt>HTTP_REQUESTED_RANGE </dt>
3554<dd class="description">The requested range is not satisfiable</dd>
3555<dt>HTTP_REQUEST_TIMEOUT </dt>
3556<dd class="description">Request timed out</dd>
3557<dt>HTTP_REQUEST_TOO_LARGE </dt>
3558<dd class="description">Request entity too large</dd>
3559<dt>HTTP_RESET_CONTENT </dt>
3560<dd class="description">Content was reset/recreated</dd>
3561<dt>HTTP_SEE_OTHER </dt>
3562<dd class="description">See this other link...</dd>
3563<dt>HTTP_SERVER_ERROR </dt>
3564<dd class="description">Internal server error</dd>
3565<dt>HTTP_SERVICE_UNAVAILABLE </dt>
3566<dd class="description">Service is unavailable</dd>
3567<dt>HTTP_SWITCHING_PROTOCOLS </dt>
3568<dd class="description">HTTP upgrade to TLS/SSL</dd>
3569<dt>HTTP_UNAUTHORIZED </dt>
3570<dd class="description">Unauthorized to access host</dd>
3571<dt>HTTP_UNSUPPORTED_MEDIATYPE </dt>
3572<dd class="description">The requested media type is unsupported</dd>
3573<dt>HTTP_UPGRADE_REQUIRED </dt>
3574<dd class="description">Upgrade to SSL/TLS required</dd>
3575<dt>HTTP_URI_TOO_LONG </dt>
3576<dd class="description">URI too long</dd>
3577<dt>HTTP_USE_PROXY </dt>
3578<dd class="description">Must use a proxy to access this URI</dd>
3579</dl>
3580<h3 class="enumeration"><a name="http_uri_coding_e">http_uri_coding_e</a></h3>
3581<p class="description"></p>
3582<h4 class="constants">Constants</h4>
3583<dl>
3584<dt>HTTP_URI_CODING_ALL </dt>
3585<dd class="description">En/decode everything</dd>
3586<dt>HTTP_URI_CODING_HOSTNAME </dt>
3587<dd class="description">En/decode the hostname portion</dd>
3588<dt>HTTP_URI_CODING_MOST </dt>
3589<dd class="description">En/decode all but the query</dd>
3590<dt>HTTP_URI_CODING_NONE </dt>
3591<dd class="description">Don't en/decode anything</dd>
3592<dt>HTTP_URI_CODING_QUERY </dt>
3593<dd class="description">En/decode the query portion</dd>
3594<dt>HTTP_URI_CODING_RESOURCE </dt>
3595<dd class="description">En/decode the resource portion</dd>
3596<dt>HTTP_URI_CODING_USERNAME </dt>
3597<dd class="description">En/decode the username portion</dd>
3598</dl>
3599<h3 class="enumeration"><a name="http_uri_status_e">http_uri_status_e</a></h3>
3600<p class="description"></p>
3601<h4 class="constants">Constants</h4>
3602<dl>
3603<dt>HTTP_URI_BAD_ARGUMENTS </dt>
3604<dd class="description">Bad arguments to function (error)</dd>
3605<dt>HTTP_URI_BAD_HOSTNAME </dt>
3606<dd class="description">Bad hostname in URI (error)</dd>
3607<dt>HTTP_URI_BAD_PORT </dt>
3608<dd class="description">Bad port number in URI (error)</dd>
3609<dt>HTTP_URI_BAD_RESOURCE </dt>
3610<dd class="description">Bad resource in URI (error)</dd>
3611<dt>HTTP_URI_BAD_SCHEME </dt>
3612<dd class="description">Bad scheme in URI (error)</dd>
3613<dt>HTTP_URI_BAD_URI </dt>
3614<dd class="description">Bad/empty URI (error)</dd>
3615<dt>HTTP_URI_BAD_USERNAME </dt>
3616<dd class="description">Bad username in URI (error)</dd>
3617<dt>HTTP_URI_MISSING_RESOURCE </dt>
3618<dd class="description">Missing resource in URI (warning)</dd>
3619<dt>HTTP_URI_MISSING_SCHEME </dt>
3620<dd class="description">Missing scheme in URI (warning)</dd>
3621<dt>HTTP_URI_OK </dt>
3622<dd class="description">URI decoded OK</dd>
3623<dt>HTTP_URI_OVERFLOW </dt>
3624<dd class="description">URI buffer for httpAssembleURI is too small</dd>
3625<dt>HTTP_URI_UNKNOWN_SCHEME </dt>
3626<dd class="description">Unknown scheme in URI (warning)</dd>
3627</dl>
3628<h3 class="enumeration"><a name="http_version_e">http_version_e</a></h3>
3629<p class="description"></p>
3630<h4 class="constants">Constants</h4>
3631<dl>
3632<dt>HTTP_0_9 </dt>
3633<dd class="description">HTTP/0.9</dd>
3634<dt>HTTP_1_0 </dt>
3635<dd class="description">HTTP/1.0</dd>
3636<dt>HTTP_1_1 </dt>
3637<dd class="description">HTTP/1.1</dd>
3638</dl>
3639<h3 class="enumeration"><a name="ipp_finish_e">ipp_finish_e</a></h3>
3640<p class="description"></p>
3641<h4 class="constants">Constants</h4>
3642<dl>
3643<dt>IPP_FINISHINGS_BALE </dt>
3644<dd class="description">Bale (any type)</dd>
3645<dt>IPP_FINISHINGS_BIND </dt>
3646<dd class="description">Bind</dd>
3647<dt>IPP_FINISHINGS_BIND_BOTTOM </dt>
3648<dd class="description">Bind on bottom</dd>
3649<dt>IPP_FINISHINGS_BIND_LEFT </dt>
3650<dd class="description">Bind on left</dd>
3651<dt>IPP_FINISHINGS_BIND_RIGHT </dt>
3652<dd class="description">Bind on right</dd>
3653<dt>IPP_FINISHINGS_BIND_TOP </dt>
3654<dd class="description">Bind on top</dd>
3655<dt>IPP_FINISHINGS_BOOKLET_MAKER </dt>
3656<dd class="description">Fold to make booklet</dd>
3657<dt>IPP_FINISHINGS_COVER </dt>
3658<dd class="description">Add cover</dd>
3659<dt>IPP_FINISHINGS_EDGE_STITCH </dt>
3660<dd class="description">Stitch along any side</dd>
3661<dt>IPP_FINISHINGS_EDGE_STITCH_BOTTOM </dt>
3662<dd class="description">Stitch along bottom edge</dd>
3663<dt>IPP_FINISHINGS_EDGE_STITCH_LEFT </dt>
3664<dd class="description">Stitch along left side</dd>
3665<dt>IPP_FINISHINGS_EDGE_STITCH_RIGHT </dt>
3666<dd class="description">Stitch along right side</dd>
3667<dt>IPP_FINISHINGS_EDGE_STITCH_TOP </dt>
3668<dd class="description">Stitch along top edge</dd>
3669<dt>IPP_FINISHINGS_FOLD </dt>
3670<dd class="description">Fold (any type)</dd>
3671<dt>IPP_FINISHINGS_JOB_OFFSET </dt>
3672<dd class="description">Offset for binding (any type)</dd>
3673<dt>IPP_FINISHINGS_NONE </dt>
3674<dd class="description">No finishing</dd>
3675<dt>IPP_FINISHINGS_PUNCH </dt>
3676<dd class="description">Punch (any location/count)</dd>
3677<dt>IPP_FINISHINGS_SADDLE_STITCH </dt>
3678<dd class="description">Staple interior</dd>
3679<dt>IPP_FINISHINGS_STAPLE </dt>
3680<dd class="description">Staple (any location)</dd>
3681<dt>IPP_FINISHINGS_STAPLE_BOTTOM_LEFT </dt>
3682<dd class="description">Staple bottom left corner</dd>
3683<dt>IPP_FINISHINGS_STAPLE_BOTTOM_RIGHT </dt>
3684<dd class="description">Staple bottom right corner</dd>
3685<dt>IPP_FINISHINGS_STAPLE_DUAL_BOTTOM </dt>
3686<dd class="description">Two staples on bottom</dd>
3687<dt>IPP_FINISHINGS_STAPLE_DUAL_LEFT </dt>
3688<dd class="description">Two staples on left</dd>
3689<dt>IPP_FINISHINGS_STAPLE_DUAL_RIGHT </dt>
3690<dd class="description">Two staples on right</dd>
3691<dt>IPP_FINISHINGS_STAPLE_DUAL_TOP </dt>
3692<dd class="description">Two staples on top</dd>
3693<dt>IPP_FINISHINGS_STAPLE_TOP_LEFT </dt>
3694<dd class="description">Staple top left corner</dd>
3695<dt>IPP_FINISHINGS_STAPLE_TOP_RIGHT </dt>
3696<dd class="description">Staple top right corner</dd>
3697<dt>IPP_FINISHINGS_TRIM </dt>
3698<dd class="description">Trim (any type)</dd>
3699</dl>
3700<h3 class="enumeration"><a name="ipp_jstate_e">ipp_jstate_e</a></h3>
3701<p class="description"></p>
3702<h4 class="constants">Constants</h4>
3703<dl>
3704<dt>IPP_JOB_ABORTED </dt>
3705<dd class="description">Job has aborted due to error</dd>
3706<dt>IPP_JOB_CANCELED </dt>
3707<dd class="description">Job has been canceled</dd>
3708<dt>IPP_JOB_COMPLETED </dt>
3709<dd class="description">Job has completed successfully</dd>
3710<dt>IPP_JOB_HELD </dt>
3711<dd class="description">Job is held for printing</dd>
3712<dt>IPP_JOB_PENDING </dt>
3713<dd class="description">Job is waiting to be printed</dd>
3714<dt>IPP_JOB_PROCESSING </dt>
3715<dd class="description">Job is currently printing</dd>
3716<dt>IPP_JOB_STOPPED </dt>
3717<dd class="description">Job has been stopped</dd>
3718</dl>
3719<h3 class="enumeration"><a name="ipp_op_e">ipp_op_e</a></h3>
3720<p class="description"></p>
3721<h4 class="constants">Constants</h4>
3722<dl>
3723<dt>CUPS_ACCEPT_JOBS </dt>
3724<dd class="description">Accept new jobs on a printer</dd>
3725<dt>CUPS_ADD_MODIFY_CLASS </dt>
3726<dd class="description">Add or modify a class</dd>
3727<dt>CUPS_ADD_MODIFY_PRINTER </dt>
3728<dd class="description">Add or modify a printer</dd>
3729<dt>CUPS_AUTHENTICATE_JOB <span class="info">&nbsp;CUPS 1.2&nbsp;</span></dt>
3730<dd class="description">Authenticate a job </dd>
3731<dt>CUPS_DELETE_CLASS </dt>
3732<dd class="description">Delete a class</dd>
3733<dt>CUPS_DELETE_PRINTER </dt>
3734<dd class="description">Delete a printer</dd>
3735<dt>CUPS_GET_CLASSES <span class="info">&nbsp;DEPRECATED&nbsp;</span></dt>
3736<dd class="description">Get a list of classes </dd>
3737<dt>CUPS_GET_DEFAULT </dt>
3738<dd class="description">Get the default printer</dd>
3739<dt>CUPS_GET_DEVICES </dt>
3740<dd class="description">Get a list of supported devices</dd>
3741<dt>CUPS_GET_DOCUMENT <span class="info">&nbsp;CUPS 1.4&nbsp;</span></dt>
3742<dd class="description">Get a document file </dd>
3743<dt>CUPS_GET_PPD <span class="info">&nbsp;CUPS 1.3&nbsp;</span></dt>
3744<dd class="description">Get a PPD file </dd>
3745<dt>CUPS_GET_PPDS </dt>
3746<dd class="description">Get a list of supported drivers</dd>
3747<dt>CUPS_GET_PRINTERS </dt>
3748<dd class="description">Get a list of printers and/or classes</dd>
3749<dt>CUPS_MOVE_JOB </dt>
3750<dd class="description">Move a job to a different printer</dd>
3751<dt>CUPS_REJECT_JOBS </dt>
3752<dd class="description">Reject new jobs on a printer</dd>
3753<dt>CUPS_SET_DEFAULT </dt>
3754<dd class="description">Set the default printer</dd>
3755<dt>IPP_CANCEL_JOB </dt>
3756<dd class="description">Cancel a job</dd>
3757<dt>IPP_CANCEL_SUBSCRIPTION <span class="info">&nbsp;CUPS 1.2&nbsp;</span></dt>
3758<dd class="description">Cancel a subscription </dd>
3759<dt>IPP_CREATE_JOB </dt>
3760<dd class="description">Create an empty print job</dd>
3761<dt>IPP_CREATE_JOB_SUBSCRIPTION <span class="info">&nbsp;CUPS 1.2&nbsp;</span></dt>
3762<dd class="description">Create a job subscription </dd>
3763<dt>IPP_CREATE_PRINTER_SUBSCRIPTION <span class="info">&nbsp;CUPS 1.2&nbsp;</span></dt>
3764<dd class="description">Create a printer subscription </dd>
3765<dt>IPP_DISABLE_PRINTER </dt>
3766<dd class="description">Stop a printer</dd>
3767<dt>IPP_ENABLE_PRINTER </dt>
3768<dd class="description">Start a printer</dd>
3769<dt>IPP_GET_JOBS </dt>
3770<dd class="description">Get a list of jobs</dd>
3771<dt>IPP_GET_JOB_ATTRIBUTES </dt>
3772<dd class="description">Get job attributes</dd>
3773<dt>IPP_GET_NOTIFICATIONS <span class="info">&nbsp;CUPS 1.2&nbsp;</span></dt>
3774<dd class="description">Get notification events </dd>
3775<dt>IPP_GET_PRINTER_ATTRIBUTES </dt>
3776<dd class="description">Get printer attributes</dd>
3777<dt>IPP_GET_PRINTER_SUPPORTED_VALUES </dt>
3778<dd class="description">Get supported attribute values</dd>
3779<dt>IPP_GET_SUBSCRIPTIONS <span class="info">&nbsp;CUPS 1.2&nbsp;</span></dt>
3780<dd class="description">Get list of subscriptions </dd>
3781<dt>IPP_GET_SUBSCRIPTION_ATTRIBUTES <span class="info">&nbsp;CUPS 1.2&nbsp;</span></dt>
3782<dd class="description">Get subscription attributes </dd>
3783<dt>IPP_HOLD_JOB </dt>
3784<dd class="description">Hold a job for printing</dd>
3785<dt>IPP_PAUSE_PRINTER </dt>
3786<dd class="description">Stop a printer</dd>
3787<dt>IPP_PRINT_JOB </dt>
3788<dd class="description">Print a single file</dd>
3789<dt>IPP_PURGE_JOBS </dt>
3790<dd class="description">Cancel all jobs</dd>
3791<dt>IPP_RELEASE_JOB </dt>
3792<dd class="description">Release a job for printing</dd>
3793<dt>IPP_RENEW_SUBSCRIPTION <span class="info">&nbsp;CUPS 1.2&nbsp;</span></dt>
3794<dd class="description">Renew a printer subscription </dd>
3795<dt>IPP_RESTART_JOB </dt>
3796<dd class="description">Reprint a job</dd>
3797<dt>IPP_RESUME_PRINTER </dt>
3798<dd class="description">Start a printer</dd>
3799<dt>IPP_SEND_DOCUMENT </dt>
3800<dd class="description">Add a file to a job</dd>
3801<dt>IPP_SET_JOB_ATTRIBUTES </dt>
3802<dd class="description">Set job attributes</dd>
3803<dt>IPP_VALIDATE_JOB </dt>
3804<dd class="description">Validate job options</dd>
3805</dl>
3806<h3 class="enumeration"><a name="ipp_orient_e">ipp_orient_e</a></h3>
3807<p class="description"></p>
3808<h4 class="constants">Constants</h4>
3809<dl>
3810<dt>IPP_LANDSCAPE </dt>
3811<dd class="description">90 degrees counter-clockwise</dd>
3812<dt>IPP_PORTRAIT </dt>
3813<dd class="description">No rotation</dd>
3814<dt>IPP_REVERSE_LANDSCAPE </dt>
3815<dd class="description">90 degrees clockwise</dd>
3816<dt>IPP_REVERSE_PORTRAIT </dt>
3817<dd class="description">180 degrees</dd>
3818</dl>
3819<h3 class="enumeration"><a name="ipp_pstate_e">ipp_pstate_e</a></h3>
3820<p class="description"></p>
3821<h4 class="constants">Constants</h4>
3822<dl>
3823<dt>IPP_PRINTER_IDLE </dt>
3824<dd class="description">Printer is idle</dd>
3825<dt>IPP_PRINTER_PROCESSING </dt>
3826<dd class="description">Printer is working</dd>
3827<dt>IPP_PRINTER_STOPPED </dt>
3828<dd class="description">Printer is stopped</dd>
3829</dl>
3830<h3 class="enumeration"><a name="ipp_quality_e">ipp_quality_e</a></h3>
3831<p class="description"></p>
3832<h4 class="constants">Constants</h4>
3833<dl>
3834<dt>IPP_QUALITY_DRAFT </dt>
3835<dd class="description">Draft quality</dd>
3836<dt>IPP_QUALITY_HIGH </dt>
3837<dd class="description">High quality</dd>
3838<dt>IPP_QUALITY_NORMAL </dt>
3839<dd class="description">Normal quality</dd>
3840</dl>
3841<h3 class="enumeration"><a name="ipp_res_e">ipp_res_e</a></h3>
3842<p class="description">Types and structures...</p>
3843<h4 class="constants">Constants</h4>
3844<dl>
3845<dt>IPP_RES_PER_CM </dt>
3846<dd class="description">Pixels per centimeter</dd>
3847<dt>IPP_RES_PER_INCH </dt>
3848<dd class="description">Pixels per inch</dd>
3849</dl>
3850<h3 class="enumeration"><a name="ipp_state_e">ipp_state_e</a></h3>
3851<p class="description"></p>
3852<h4 class="constants">Constants</h4>
3853<dl>
3854<dt>IPP_ATTRIBUTE </dt>
3855<dd class="description">One or more attributes need to be sent/received</dd>
3856<dt>IPP_DATA </dt>
3857<dd class="description">IPP request data needs to be sent/received</dd>
3858<dt>IPP_ERROR </dt>
3859<dd class="description">An error occurred</dd>
3860<dt>IPP_HEADER </dt>
3861<dd class="description">The request header needs to be sent/received</dd>
3862<dt>IPP_IDLE </dt>
3863<dd class="description">Nothing is happening/request completed</dd>
3864</dl>
3865<h3 class="enumeration"><a name="ipp_status_e">ipp_status_e</a></h3>
3866<p class="description">IPP status codes...</p>
3867<h4 class="constants">Constants</h4>
3868<dl>
3869<dt>CUPS_SEE_OTHER </dt>
3870<dd class="description">cups-see-other</dd>
3871<dt>IPP_ATTRIBUTES </dt>
3872<dd class="description">client-error-attributes-or-values-not-supported</dd>
3873<dt>IPP_ATTRIBUTES_NOT_SETTABLE </dt>
3874<dd class="description">client-error-attributes-not-settable</dd>
3875<dt>IPP_BAD_REQUEST </dt>
3876<dd class="description">client-error-bad-request</dd>
3877<dt>IPP_CHARSET </dt>
3878<dd class="description">client-error-charset-not-supported</dd>
3879<dt>IPP_COMPRESSION_ERROR </dt>
3880<dd class="description">client-error-compression-error</dd>
3881<dt>IPP_COMPRESSION_NOT_SUPPORTED </dt>
3882<dd class="description">client-error-compression-not-supported</dd>
3883<dt>IPP_CONFLICT </dt>
3884<dd class="description">client-error-conflicting-attributes</dd>
3885<dt>IPP_DEVICE_ERROR </dt>
3886<dd class="description">server-error-device-error</dd>
3887<dt>IPP_DOCUMENT_ACCESS_ERROR </dt>
3888<dd class="description">client-error-document-access-error</dd>
3889<dt>IPP_DOCUMENT_FORMAT </dt>
3890<dd class="description">client-error-document-format-not-supported</dd>
3891<dt>IPP_DOCUMENT_FORMAT_ERROR </dt>
3892<dd class="description">client-error-document-format-error</dd>
3893<dt>IPP_ERROR_JOB_CANCELED </dt>
3894<dd class="description">server-error-job-canceled</dd>
3895<dt>IPP_FORBIDDEN </dt>
3896<dd class="description">client-error-forbidden</dd>
3897<dt>IPP_GONE </dt>
3898<dd class="description">client-error-gone</dd>
3899<dt>IPP_IGNORED_ALL_NOTIFICATIONS </dt>
3900<dd class="description">client-error-ignored-all-notifications</dd>
3901<dt>IPP_IGNORED_ALL_SUBSCRIPTIONS </dt>
3902<dd class="description">client-error-ignored-all-subscriptions</dd>
3903<dt>IPP_INTERNAL_ERROR </dt>
3904<dd class="description">server-error-internal-error</dd>
3905<dt>IPP_MULTIPLE_JOBS_NOT_SUPPORTED </dt>
3906<dd class="description">server-error-multiple-document-jobs-not-supported</dd>
3907<dt>IPP_NOT_ACCEPTING </dt>
3908<dd class="description">server-error-not-accepting-jobs</dd>
3909<dt>IPP_NOT_AUTHENTICATED </dt>
3910<dd class="description">client-error-not-authenticated</dd>
3911<dt>IPP_NOT_AUTHORIZED </dt>
3912<dd class="description">client-error-not-authorized</dd>
3913<dt>IPP_NOT_FOUND </dt>
3914<dd class="description">client-error-not-found</dd>
3915<dt>IPP_NOT_POSSIBLE </dt>
3916<dd class="description">client-error-not-possible</dd>
3917<dt>IPP_OK </dt>
3918<dd class="description">successful-ok</dd>
3919<dt>IPP_OK_BUT_CANCEL_SUBSCRIPTION </dt>
3920<dd class="description">successful-ok-but-cancel-subscription</dd>
3921<dt>IPP_OK_CONFLICT </dt>
3922<dd class="description">successful-ok-conflicting-attributes</dd>
3923<dt>IPP_OK_EVENTS_COMPLETE </dt>
3924<dd class="description">successful-ok-events-complete</dd>
3925<dt>IPP_OK_IGNORED_NOTIFICATIONS </dt>
3926<dd class="description">successful-ok-ignored-notifications</dd>
3927<dt>IPP_OK_IGNORED_SUBSCRIPTIONS </dt>
3928<dd class="description">successful-ok-ignored-subscriptions</dd>
3929<dt>IPP_OK_SUBST </dt>
3930<dd class="description">successful-ok-ignored-or-substituted-attributes</dd>
3931<dt>IPP_OK_TOO_MANY_EVENTS </dt>
3932<dd class="description">successful-ok-too-many-events</dd>
3933<dt>IPP_OPERATION_NOT_SUPPORTED </dt>
3934<dd class="description">server-error-operation-not-supported</dd>
3935<dt>IPP_PRINTER_BUSY </dt>
3936<dd class="description">server-error-busy</dd>
3937<dt>IPP_PRINTER_IS_DEACTIVATED </dt>
3938<dd class="description">server-error-printer-is-deactivated</dd>
3939<dt>IPP_PRINT_SUPPORT_FILE_NOT_FOUND </dt>
3940<dd class="description">client-error-print-support-file-not-found</dd>
3941<dt>IPP_REQUEST_ENTITY </dt>
3942<dd class="description">client-error-request-entity-too-large</dd>
3943<dt>IPP_REQUEST_VALUE </dt>
3944<dd class="description">client-error-request-value-too-long</dd>
3945<dt>IPP_SERVICE_UNAVAILABLE </dt>
3946<dd class="description">server-error-service-unavailable</dd>
3947<dt>IPP_TEMPORARY_ERROR </dt>
3948<dd class="description">server-error-temporary-error</dd>
3949<dt>IPP_TIMEOUT </dt>
3950<dd class="description">client-error-timeout</dd>
3951<dt>IPP_TOO_MANY_SUBSCRIPTIONS </dt>
3952<dd class="description">client-error-too-many-subscriptions</dd>
3953<dt>IPP_URI_SCHEME </dt>
3954<dd class="description">client-error-uri-scheme-not-supported</dd>
3955<dt>IPP_VERSION_NOT_SUPPORTED </dt>
3956<dd class="description">server-error-version-not-supported</dd>
3957</dl>
3958<h3 class="enumeration"><a name="ipp_tag_e">ipp_tag_e</a></h3>
3959<p class="description">Format tags for attributes...</p>
3960<h4 class="constants">Constants</h4>
3961<dl>
3962<dt>IPP_TAG_ADMINDEFINE </dt>
3963<dd class="description">Admin-defined value</dd>
3964<dt>IPP_TAG_BEGIN_COLLECTION </dt>
3965<dd class="description">Beginning of collection value</dd>
3966<dt>IPP_TAG_BOOLEAN </dt>
3967<dd class="description">Boolean value</dd>
3968<dt>IPP_TAG_CHARSET </dt>
3969<dd class="description">Character set value</dd>
3970<dt>IPP_TAG_COPY </dt>
3971<dd class="description">Bitflag for copied attribute values</dd>
3972<dt>IPP_TAG_DATE </dt>
3973<dd class="description">Date/time value</dd>
3974<dt>IPP_TAG_DEFAULT </dt>
3975<dd class="description">Default value</dd>
3976<dt>IPP_TAG_DELETEATTR </dt>
3977<dd class="description">Delete-attribute value</dd>
3978<dt>IPP_TAG_END </dt>
3979<dd class="description">End-of-attributes</dd>
3980<dt>IPP_TAG_END_COLLECTION </dt>
3981<dd class="description">End of collection value</dd>
3982<dt>IPP_TAG_ENUM </dt>
3983<dd class="description">Enumeration value</dd>
3984<dt>IPP_TAG_EVENT_NOTIFICATION </dt>
3985<dd class="description">Event group</dd>
3986<dt>IPP_TAG_INTEGER </dt>
3987<dd class="description">Integer value</dd>
3988<dt>IPP_TAG_JOB </dt>
3989<dd class="description">Job group</dd>
3990<dt>IPP_TAG_KEYWORD </dt>
3991<dd class="description">Keyword value</dd>
3992<dt>IPP_TAG_LANGUAGE </dt>
3993<dd class="description">Language value</dd>
3994<dt>IPP_TAG_MASK </dt>
3995<dd class="description">Mask for copied attribute values</dd>
3996<dt>IPP_TAG_MEMBERNAME </dt>
3997<dd class="description">Collection member name value</dd>
3998<dt>IPP_TAG_MIMETYPE </dt>
3999<dd class="description">MIME media type value</dd>
4000<dt>IPP_TAG_NAME </dt>
4001<dd class="description">Name value</dd>
4002<dt>IPP_TAG_NAMELANG </dt>
4003<dd class="description">Name-with-language value</dd>
4004<dt>IPP_TAG_NOTSETTABLE </dt>
4005<dd class="description">Not-settable value</dd>
4006<dt>IPP_TAG_NOVALUE </dt>
4007<dd class="description">No-value value</dd>
4008<dt>IPP_TAG_OPERATION </dt>
4009<dd class="description">Operation group</dd>
4010<dt>IPP_TAG_PRINTER </dt>
4011<dd class="description">Printer group</dd>
4012<dt>IPP_TAG_RANGE </dt>
4013<dd class="description">Range value</dd>
4014<dt>IPP_TAG_RESOLUTION </dt>
4015<dd class="description">Resolution value</dd>
4016<dt>IPP_TAG_STRING </dt>
4017<dd class="description">Octet string value</dd>
4018<dt>IPP_TAG_SUBSCRIPTION </dt>
4019<dd class="description">Subscription group</dd>
4020<dt>IPP_TAG_TEXT </dt>
4021<dd class="description">Text value</dd>
4022<dt>IPP_TAG_TEXTLANG </dt>
4023<dd class="description">Text-with-language value</dd>
4024<dt>IPP_TAG_UNKNOWN </dt>
4025<dd class="description">Unknown value</dd>
4026<dt>IPP_TAG_UNSUPPORTED_GROUP </dt>
4027<dd class="description">Unsupported attributes group</dd>
4028<dt>IPP_TAG_UNSUPPORTED_VALUE </dt>
4029<dd class="description">Unsupported value</dd>
4030<dt>IPP_TAG_URI </dt>
4031<dd class="description">URI value</dd>
4032<dt>IPP_TAG_URISCHEME </dt>
4033<dd class="description">URI scheme value</dd>
4034<dt>IPP_TAG_ZERO </dt>
4035<dd class="description">Zero tag - used for separators</dd>
4036</dl>
4037</div>
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4039</html>