2 * DEBUG: section 88 Client-side Reply Routines
3 * AUTHOR: Robert Collins (Originally Duane Wessels in client_side.c)
5 * SQUID Web Proxy Cache http://www.squid-cache.org/
6 * ----------------------------------------------------------
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19 * the Free Software Foundation; either version 2 of the License, or
20 * (at your option) any later version.
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
27 * You should have received a copy of the GNU General Public License
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29 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
33 #include "acl/FilledChecklist.h"
34 #include "acl/Gadgets.h"
35 #include "anyp/PortCfg.h"
36 #include "client_side_reply.h"
37 #include "errorpage.h"
41 #include "format/Token.h"
45 #include "HttpHeaderTools.h"
46 #include "HttpReply.h"
47 #include "HttpRequest.h"
48 #include "ip/QosConfig.h"
50 #include "log/access_log.h"
51 #include "MemObject.h"
52 #include "mime_header.h"
53 #include "neighbors.h"
55 #include "RequestFlags.h"
56 #include "SquidConfig.h"
57 #include "SquidTime.h"
63 #include "auth/UserRequest.h"
66 #include "DelayPools.h"
74 CBDATA_CLASS_INIT(clientReplyContext
);
77 extern "C" CSS clientReplyStatus
;
78 ErrorState
*clientBuildError(err_type
, Http::StatusCode
, char const *, Ip::Address
&, HttpRequest
*);
82 clientReplyContext::~clientReplyContext()
85 /* This may trigger a callback back into SendMoreData as the cbdata
88 removeClientStoreReference(&sc
, http
);
89 /* old_entry might still be set if we didn't yet get the reply
90 * code in HandleIMSReply() */
91 removeStoreReference(&old_sc
, &old_entry
);
92 safe_free(tempBuffer
.data
);
93 cbdataReferenceDone(http
);
97 clientReplyContext::clientReplyContext(ClientHttpRequest
*clientContext
) : http (cbdataReference(clientContext
)), old_entry (NULL
), old_sc(NULL
), deleting(false)
100 /** Create an error in the store awaiting the client side to read it.
102 * This may be better placed in the clientStream logic, but it has not been
103 * relocated there yet
106 clientReplyContext::setReplyToError(
107 err_type err
, Http::StatusCode status
, const HttpRequestMethod
& method
, char const *uri
,
108 Ip::Address
&addr
, HttpRequest
* failedrequest
, const char *unparsedrequest
,
110 Auth::UserRequest::Pointer auth_user_request
116 ErrorState
*errstate
= clientBuildError(err
, status
, uri
, addr
, failedrequest
);
119 errstate
->request_hdrs
= xstrdup(unparsedrequest
);
122 errstate
->auth_user_request
= auth_user_request
;
124 setReplyToError(method
, errstate
);
127 void clientReplyContext::setReplyToError(const HttpRequestMethod
& method
, ErrorState
*errstate
)
129 if (errstate
->httpStatus
== Http::scNotImplemented
&& http
->request
)
130 /* prevent confusion over whether we default to persistent or not */
131 http
->request
->flags
.proxyKeepalive
= false;
133 http
->al
->http
.code
= errstate
->httpStatus
;
135 createStoreEntry(method
, RequestFlags());
136 assert(errstate
->callback_data
== NULL
);
137 errorAppendEntry(http
->storeEntry(), errstate
);
138 /* Now the caller reads to get this */
141 void clientReplyContext::setReplyToStoreEntry(StoreEntry
*entry
)
143 entry
->lock("clientReplyContext::setReplyToStoreEntry"); // removeClientStoreReference() unlocks
144 sc
= storeClientListAdd(entry
, this);
146 sc
->setDelayId(DelayId::DelayClient(http
));
150 flags
.storelogiccomplete
= 1;
151 http
->storeEntry(entry
);
155 clientReplyContext::removeStoreReference(store_client
** scp
,
159 store_client
*sc_tmp
= *scp
;
161 if ((e
= *ep
) != NULL
) {
163 storeUnregister(sc_tmp
, e
, this);
165 e
->unlock("clientReplyContext::removeStoreReference");
170 clientReplyContext::removeClientStoreReference(store_client
**scp
, ClientHttpRequest
*aHttpRequest
)
172 StoreEntry
*reference
= aHttpRequest
->storeEntry();
173 removeStoreReference(scp
, &reference
);
174 aHttpRequest
->storeEntry(reference
);
178 clientReplyContext::saveState()
180 assert(old_sc
== NULL
);
181 debugs(88, 3, "clientReplyContext::saveState: saving store context");
182 old_entry
= http
->storeEntry();
184 old_reqsize
= reqsize
;
185 tempBuffer
.offset
= reqofs
;
186 /* Prevent accessing the now saved entries */
187 http
->storeEntry(NULL
);
194 clientReplyContext::restoreState()
196 assert(old_sc
!= NULL
);
197 debugs(88, 3, "clientReplyContext::restoreState: Restoring store context");
198 removeClientStoreReference(&sc
, http
);
199 http
->storeEntry(old_entry
);
201 reqsize
= old_reqsize
;
202 reqofs
= tempBuffer
.offset
;
203 /* Prevent accessed the old saved entries */
207 tempBuffer
.offset
= 0;
211 clientReplyContext::startError(ErrorState
* err
)
213 createStoreEntry(http
->request
->method
, RequestFlags());
214 triggerInitialStoreRead();
215 errorAppendEntry(http
->storeEntry(), err
);
219 clientReplyContext::getNextNode() const
221 return (clientStreamNode
*)ourNode
->node
.next
->data
;
224 /* This function is wrong - the client parameters don't include the
228 clientReplyContext::triggerInitialStoreRead()
230 /* when confident, 0 becomes reqofs, and then this factors into
234 StoreIOBuffer
localTempBuffer (next()->readBuffer
.length
, 0, next()->readBuffer
.data
);
235 storeClientCopy(sc
, http
->storeEntry(), localTempBuffer
, SendMoreData
, this);
238 /* there is an expired entry in the store.
239 * setup a temporary buffer area and perform an IMS to the origin
242 clientReplyContext::processExpired()
244 const char *url
= storeId();
245 StoreEntry
*entry
= NULL
;
246 debugs(88, 3, "clientReplyContext::processExpired: '" << http
->uri
<< "'");
247 assert(http
->storeEntry()->lastmod
>= 0);
249 * check if we are allowed to contact other servers
250 * @?@: Instead of a 504 (Gateway Timeout) reply, we may want to return
251 * a stale entry *if* it matches client requirements
254 if (http
->onlyIfCached()) {
255 processOnlyIfCachedMiss();
259 http
->request
->flags
.refresh
= true;
260 #if STORE_CLIENT_LIST_DEBUG
261 /* Prevent a race with the store client memory free routines
263 assert(storeClientIsThisAClient(sc
, this));
265 /* Prepare to make a new temporary request */
267 entry
= storeCreateEntry(url
,
268 http
->log_uri
, http
->request
->flags
, http
->request
->method
);
269 /* NOTE, don't call StoreEntry->lock(), storeCreateEntry() does it */
270 sc
= storeClientListAdd(entry
, this);
272 /* delay_id is already set on original store client */
273 sc
->setDelayId(DelayId::DelayClient(http
));
276 http
->request
->lastmod
= old_entry
->lastmod
;
278 if (!http
->request
->header
.has(HDR_IF_NONE_MATCH
)) {
279 ETag etag
= {NULL
, -1}; // TODO: make that a default ETag constructor
280 if (old_entry
->hasEtag(etag
) && !etag
.weak
)
281 http
->request
->etag
= etag
.str
;
284 debugs(88, 5, "clientReplyContext::processExpired : lastmod " << entry
->lastmod
);
285 http
->storeEntry(entry
);
286 assert(http
->out
.offset
== 0);
287 assert(http
->request
->clientConnectionManager
== http
->getConn());
290 * A refcounted pointer so that FwdState stays around as long as
291 * this clientReplyContext does
293 Comm::ConnectionPointer conn
= http
->getConn() != NULL
? http
->getConn()->clientConnection
: NULL
;
294 FwdState::Start(conn
, http
->storeEntry(), http
->request
, http
->al
);
296 /* Register with storage manager to receive updates when data comes in. */
298 if (EBIT_TEST(entry
->flags
, ENTRY_ABORTED
))
299 debugs(88, DBG_CRITICAL
, "clientReplyContext::processExpired: Found ENTRY_ABORTED object");
302 /* start counting the length from 0 */
303 StoreIOBuffer
localTempBuffer(HTTP_REQBUF_SZ
, 0, tempbuf
);
304 storeClientCopy(sc
, entry
, localTempBuffer
, HandleIMSReply
, this);
309 clientReplyContext::sendClientUpstreamResponse()
311 StoreIOBuffer tempresult
;
312 removeStoreReference(&old_sc
, &old_entry
);
313 /* here the data to send is the data we just received */
314 tempBuffer
.offset
= 0;
316 /* sendMoreData tracks the offset as well.
317 * Force it back to zero */
319 assert(!EBIT_TEST(http
->storeEntry()->flags
, ENTRY_ABORTED
));
320 /* TODO: provide sendMoreData with the ready parsed reply */
321 tempresult
.length
= reqsize
;
322 tempresult
.data
= tempbuf
;
323 sendMoreData(tempresult
);
327 clientReplyContext::HandleIMSReply(void *data
, StoreIOBuffer result
)
329 clientReplyContext
*context
= (clientReplyContext
*)data
;
330 context
->handleIMSReply(result
);
334 clientReplyContext::sendClientOldEntry()
336 /* Get the old request back */
338 /* here the data to send is in the next nodes buffers already */
339 assert(!EBIT_TEST(http
->storeEntry()->flags
, ENTRY_ABORTED
));
340 /* sendMoreData tracks the offset as well.
341 * Force it back to zero */
343 StoreIOBuffer
tempresult (reqsize
, reqofs
, next()->readBuffer
.data
);
344 sendMoreData(tempresult
);
347 /* This is the workhorse of the HandleIMSReply callback.
349 * It is called when we've got data back from the origin following our
350 * IMS request to revalidate a stale entry.
353 clientReplyContext::handleIMSReply(StoreIOBuffer result
)
358 debugs(88, 3, "handleIMSReply: " << http
->storeEntry()->url() << ", " << (long unsigned) result
.length
<< " bytes" );
360 if (http
->storeEntry() == NULL
)
363 if (result
.flags
.error
&& !EBIT_TEST(http
->storeEntry()->flags
, ENTRY_ABORTED
))
366 /* update size of the request */
367 reqsize
= result
.length
+ reqofs
;
369 const Http::StatusCode status
= http
->storeEntry()->getReply()->sline
.status();
371 // request to origin was aborted
372 if (EBIT_TEST(http
->storeEntry()->flags
, ENTRY_ABORTED
)) {
373 debugs(88, 3, "handleIMSReply: request to origin aborted '" << http
->storeEntry()->url() << "', sending old entry to client" );
374 http
->logType
= LOG_TCP_REFRESH_FAIL_OLD
;
375 sendClientOldEntry();
378 HttpReply
*old_rep
= (HttpReply
*) old_entry
->getReply();
380 // origin replied 304
381 if (status
== Http::scNotModified
) {
382 http
->logType
= LOG_TCP_REFRESH_UNMODIFIED
;
383 http
->request
->flags
.staleIfHit
= false; // old_entry is no longer stale
385 // update headers on existing entry
386 old_rep
->updateOnNotModified(http
->storeEntry()->getReply());
387 old_entry
->timestampsSet();
389 // if client sent IMS
391 if (http
->request
->flags
.ims
&& !old_entry
->modifiedSince(http
->request
)) {
392 // forward the 304 from origin
393 debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and forwarding 304 to client");
394 sendClientUpstreamResponse();
396 // send existing entry, it's still valid
397 debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and sending " <<
398 old_rep
->sline
.status() << " to client");
399 sendClientOldEntry();
403 // origin replied with a non-error code
404 else if (status
> Http::scNone
&& status
< Http::scInternalServerError
) {
405 // forward response from origin
406 http
->logType
= LOG_TCP_REFRESH_MODIFIED
;
407 debugs(88, 3, "handleIMSReply: origin replied " << status
<< ", replacing existing entry and forwarding to client");
408 sendClientUpstreamResponse();
411 // origin replied with an error
412 else if (http
->request
->flags
.failOnValidationError
) {
413 http
->logType
= LOG_TCP_REFRESH_FAIL_ERR
;
414 debugs(88, 3, "handleIMSReply: origin replied with error " << status
<<
415 ", forwarding to client due to fail_on_validation_err");
416 sendClientUpstreamResponse();
418 // ignore and let client have old entry
419 http
->logType
= LOG_TCP_REFRESH_FAIL_OLD
;
420 debugs(88, 3, "handleIMSReply: origin replied with error " <<
421 status
<< ", sending old entry (" << old_rep
->sline
.status() << ") to client");
422 sendClientOldEntry();
426 SQUIDCEXTERN CSR clientGetMoreData
;
427 SQUIDCEXTERN CSD clientReplyDetach
;
430 * clientReplyContext::cacheHit Should only be called until the HTTP reply headers
431 * have been parsed. Normally this should be a single call, but
432 * it might take more than one. As soon as we have the headers,
433 * we hand off to clientSendMoreData, processExpired, or
437 clientReplyContext::CacheHit(void *data
, StoreIOBuffer result
)
439 clientReplyContext
*context
= (clientReplyContext
*)data
;
440 context
->cacheHit(result
);
444 * Process a possible cache HIT.
447 clientReplyContext::cacheHit(StoreIOBuffer result
)
449 /** Ignore if the HIT object is being deleted. */
453 StoreEntry
*e
= http
->storeEntry();
455 HttpRequest
*r
= http
->request
;
457 debugs(88, 3, "clientCacheHit: " << http
->uri
<< ", " << result
.length
<< " bytes");
459 if (http
->storeEntry() == NULL
) {
460 debugs(88, 3, "clientCacheHit: request aborted");
462 } else if (result
.flags
.error
) {
463 /* swap in failure */
464 debugs(88, 3, "clientCacheHit: swapin failure for " << http
->uri
);
465 http
->logType
= LOG_TCP_SWAPFAIL_MISS
;
466 removeClientStoreReference(&sc
, http
);
471 if (result
.length
== 0) {
472 /* the store couldn't get enough data from the file for us to id the
475 /* treat as a miss */
476 http
->logType
= LOG_TCP_MISS
;
481 assert(!EBIT_TEST(e
->flags
, ENTRY_ABORTED
));
482 /* update size of the request */
483 reqsize
= result
.length
+ reqofs
;
486 * Got the headers, now grok them
488 assert(http
->logType
== LOG_TCP_HIT
);
490 if (strcmp(e
->mem_obj
->storeId(), http
->request
->storeId()) != 0) {
491 debugs(33, DBG_IMPORTANT
, "clientProcessHit: URL mismatch, '" << e
->mem_obj
->storeId() << "' != '" << http
->request
->storeId() << "'");
492 http
->logType
= LOG_TCP_MISS
; // we lack a more precise LOG_*_MISS code
497 switch (varyEvaluateMatch(e
, r
)) {
500 /* No variance detected. Continue as normal */
504 /* This is the correct entity for this request. Continue */
505 debugs(88, 2, "clientProcessHit: Vary MATCH!");
509 /* This is not the correct entity for this request. We need
510 * to requery the cache.
512 removeClientStoreReference(&sc
, http
);
514 /* Note: varyEvalyateMatch updates the request with vary information
515 * so we only get here once. (it also takes care of cancelling loops)
517 debugs(88, 2, "clientProcessHit: Vary detected!");
518 clientGetMoreData(ourNode
, http
);
522 /* varyEvaluateMatch found a object loop. Process as miss */
523 debugs(88, DBG_IMPORTANT
, "clientProcessHit: Vary object loop!");
524 http
->logType
= LOG_TCP_MISS
; // we lack a more precise LOG_*_MISS code
529 if (r
->method
== Http::METHOD_PURGE
) {
530 removeClientStoreReference(&sc
, http
);
536 if (e
->checkNegativeHit()
537 && !r
->flags
.noCacheHack()
539 http
->logType
= LOG_TCP_NEGATIVE_HIT
;
540 sendMoreData(result
);
541 } else if (blockedHit()) {
542 debugs(88, 5, "send_hit forces a MISS");
543 http
->logType
= LOG_TCP_MISS
;
546 } else if (!http
->flags
.internal
&& refreshCheckHTTP(e
, r
)) {
547 debugs(88, 5, "clientCacheHit: in refreshCheck() block");
549 * We hold a stale copy; it needs to be validated
552 * The 'needValidation' flag is used to prevent forwarding
553 * loops between siblings. If our copy of the object is stale,
554 * then we should probably only use parents for the validation
555 * request. Otherwise two siblings could generate a loop if
556 * both have a stale version of the object.
558 r
->flags
.needValidation
= true;
560 if (e
->lastmod
< 0) {
561 debugs(88, 3, "validate HIT object? NO. Missing Last-Modified header. Do MISS.");
563 * Previous reply didn't have a Last-Modified header,
564 * we cannot revalidate it.
566 http
->logType
= LOG_TCP_MISS
;
568 } else if (r
->flags
.noCache
) {
569 debugs(88, 3, "validate HIT object? NO. Client sent CC:no-cache. Do CLIENT_REFRESH_MISS");
571 * This did not match a refresh pattern that overrides no-cache
572 * we should honour the client no-cache header.
574 http
->logType
= LOG_TCP_CLIENT_REFRESH_MISS
;
576 } else if (r
->protocol
== AnyP::PROTO_HTTP
) {
577 debugs(88, 3, "validate HIT object? YES.");
579 * Object needs to be revalidated
580 * XXX This could apply to FTP as well, if Last-Modified is known.
584 debugs(88, 3, "validate HIT object? NO. Client protocol non-HTTP. Do MISS.");
586 * We don't know how to re-validate other protocols. Handle
587 * them as if the object has expired.
589 http
->logType
= LOG_TCP_MISS
;
592 } else if (r
->conditional())
593 processConditional(result
);
596 * plain ol' cache hit
600 if (e
->store_status
!= STORE_OK
)
601 http
->logType
= LOG_TCP_MISS
;
604 if (e
->mem_status
== IN_MEMORY
)
605 http
->logType
= LOG_TCP_MEM_HIT
;
606 else if (Config
.onoff
.offline
)
607 http
->logType
= LOG_TCP_OFFLINE_HIT
;
609 sendMoreData(result
);
614 * Prepare to fetch the object as it's a cache miss of some kind.
617 clientReplyContext::processMiss()
619 char *url
= http
->uri
;
620 HttpRequest
*r
= http
->request
;
621 ErrorState
*err
= NULL
;
622 debugs(88, 4, "clientProcessMiss: '" << RequestMethodStr(r
->method
) << " " << url
<< "'");
625 * We might have a left-over StoreEntry from a failed cache hit
628 if (http
->storeEntry()) {
629 if (EBIT_TEST(http
->storeEntry()->flags
, ENTRY_SPECIAL
)) {
630 debugs(88, DBG_CRITICAL
, "clientProcessMiss: miss on a special object (" << url
<< ").");
631 debugs(88, DBG_CRITICAL
, "\tlog_type = " << LogTags_str
[http
->logType
]);
632 http
->storeEntry()->dump(1);
635 removeClientStoreReference(&sc
, http
);
638 /** Check if its a PURGE request to be actioned. */
639 if (r
->method
== Http::METHOD_PURGE
) {
644 /** Check if its an 'OTHER' request. Purge all cached entries if so and continue. */
645 if (r
->method
== Http::METHOD_OTHER
) {
649 /** Check if 'only-if-cached' flag is set. Action if so. */
650 if (http
->onlyIfCached()) {
651 processOnlyIfCachedMiss();
656 if (r
->flags
.loopDetected
) {
657 http
->al
->http
.code
= Http::scForbidden
;
658 err
= clientBuildError(ERR_ACCESS_DENIED
, Http::scForbidden
, NULL
, http
->getConn()->clientConnection
->remote
, http
->request
);
659 createStoreEntry(r
->method
, RequestFlags());
660 errorAppendEntry(http
->storeEntry(), err
);
661 triggerInitialStoreRead();
664 assert(http
->out
.offset
== 0);
665 createStoreEntry(r
->method
, r
->flags
);
666 triggerInitialStoreRead();
668 if (http
->redirect
.status
) {
669 HttpReply
*rep
= new HttpReply
;
670 http
->logType
= LOG_TCP_REDIRECT
;
671 http
->storeEntry()->releaseRequest();
672 rep
->redirect(http
->redirect
.status
, http
->redirect
.location
);
673 http
->storeEntry()->replaceHttpReply(rep
);
674 http
->storeEntry()->complete();
678 /** Check for internal requests. Update Protocol info if so. */
679 if (http
->flags
.internal
)
680 r
->protocol
= AnyP::PROTO_INTERNAL
;
682 assert(r
->clientConnectionManager
== http
->getConn());
684 /** Start forwarding to get the new object from network */
685 Comm::ConnectionPointer conn
= http
->getConn() != NULL
? http
->getConn()->clientConnection
: NULL
;
686 FwdState::Start(conn
, http
->storeEntry(), r
, http
->al
);
691 * client issued a request with an only-if-cached cache-control directive;
692 * we did not find a cached object that can be returned without
693 * contacting other servers;
694 * respond with a 504 (Gateway Timeout) as suggested in [RFC 2068]
697 clientReplyContext::processOnlyIfCachedMiss()
699 debugs(88, 4, "clientProcessOnlyIfCachedMiss: '" <<
700 RequestMethodStr(http
->request
->method
) << " " << http
->uri
<< "'");
701 http
->al
->http
.code
= Http::scGateway_Timeout
;
702 ErrorState
*err
= clientBuildError(ERR_ONLY_IF_CACHED_MISS
, Http::scGateway_Timeout
, NULL
,
703 http
->getConn()->clientConnection
->remote
, http
->request
);
704 removeClientStoreReference(&sc
, http
);
708 /// process conditional request from client
710 clientReplyContext::processConditional(StoreIOBuffer
&result
)
712 StoreEntry
*const e
= http
->storeEntry();
714 if (e
->getReply()->sline
.status() != Http::scOkay
) {
715 debugs(88, 4, "clientReplyContext::processConditional: Reply code " <<
716 e
->getReply()->sline
.status() << " != 200");
717 http
->logType
= LOG_TCP_MISS
;
722 HttpRequest
&r
= *http
->request
;
724 if (r
.header
.has(HDR_IF_MATCH
) && !e
->hasIfMatchEtag(r
)) {
725 // RFC 2616: reply with 412 Precondition Failed if If-Match did not match
726 sendPreconditionFailedError();
730 bool matchedIfNoneMatch
= false;
731 if (r
.header
.has(HDR_IF_NONE_MATCH
)) {
732 if (!e
->hasIfNoneMatchEtag(r
)) {
733 // RFC 2616: ignore IMS if If-None-Match did not match
737 r
.header
.delById(HDR_IF_MODIFIED_SINCE
);
738 http
->logType
= LOG_TCP_MISS
;
739 sendMoreData(result
);
744 // RFC 2616: if If-None-Match matched and there is no IMS,
745 // reply with 304 Not Modified or 412 Precondition Failed
746 sendNotModifiedOrPreconditionFailedError();
750 // otherwise check IMS below to decide if we reply with 304 or 412
751 matchedIfNoneMatch
= true;
755 // handle If-Modified-Since requests from the client
756 if (e
->modifiedSince(&r
)) {
757 http
->logType
= LOG_TCP_IMS_HIT
;
758 sendMoreData(result
);
762 if (matchedIfNoneMatch
) {
763 // If-None-Match matched, reply with 304 Not Modified or
764 // 412 Precondition Failed
765 sendNotModifiedOrPreconditionFailedError();
769 // otherwise reply with 304 Not Modified
774 /// whether squid.conf send_hit prevents us from serving this hit
776 clientReplyContext::blockedHit() const
778 if (!Config
.accessList
.sendHit
)
779 return false; // hits are not blocked by default
781 if (http
->flags
.internal
)
782 return false; // internal content "hits" cannot be blocked
784 if (const HttpReply
*rep
= http
->storeEntry()->getReply()) {
785 std::auto_ptr
<ACLFilledChecklist
> chl(clientAclChecklistCreate(Config
.accessList
.sendHit
, http
));
786 chl
->reply
= const_cast<HttpReply
*>(rep
); // ACLChecklist API bug
787 HTTPMSGLOCK(chl
->reply
);
788 return chl
->fastCheck() != ACCESS_ALLOWED
; // when in doubt, block
791 // This does not happen, I hope, because we are called from CacheHit, which
792 // is called via a storeClientCopy() callback, and store should initialize
793 // the reply before calling that callback.
794 debugs(88, 3, "Missing reply!");
799 clientReplyContext::purgeRequestFindObjectToPurge()
801 /* Try to find a base entry */
802 http
->flags
.purging
= true;
805 // TODO: can we use purgeAllCached() here instead of doing the
806 // getPublicByRequestMethod() dance?
807 StoreEntry::getPublicByRequestMethod(this, http
->request
, Http::METHOD_GET
);
810 // Purges all entries with a given url
811 // TODO: move to SideAgent parent, when we have one
813 * We probably cannot purge Vary-affected responses because their MD5
814 * keys depend on vary headers.
817 purgeEntriesByUrl(HttpRequest
* req
, const char *url
)
820 bool get_or_head_sent
= false;
823 for (HttpRequestMethod
m(Http::METHOD_NONE
); m
!= Http::METHOD_ENUM_END
; ++m
) {
824 if (m
.respMaybeCacheable()) {
825 if (StoreEntry
*entry
= storeGetPublic(url
, m
)) {
826 debugs(88, 5, "purging " << *entry
<< ' ' << RequestMethodStr(m
) << ' ' << url
);
828 neighborsHtcpClear(entry
, url
, req
, m
, HTCP_CLR_INVALIDATION
);
829 if (m
== Http::METHOD_GET
|| m
== Http::METHOD_HEAD
) {
830 get_or_head_sent
= true;
839 if (!get_or_head_sent
) {
840 neighborsHtcpClear(NULL
, url
, req
, HttpRequestMethod(Http::METHOD_GET
), HTCP_CLR_INVALIDATION
);
846 clientReplyContext::purgeAllCached()
848 const char *url
= urlCanonical(http
->request
);
849 purgeEntriesByUrl(http
->request
, url
);
853 clientReplyContext::created(StoreEntry
*newEntry
)
855 if (lookingforstore
== 1)
856 purgeFoundGet(newEntry
);
857 else if (lookingforstore
== 2)
858 purgeFoundHead(newEntry
);
859 else if (lookingforstore
== 3)
860 purgeDoPurgeGet(newEntry
);
861 else if (lookingforstore
== 4)
862 purgeDoPurgeHead(newEntry
);
863 else if (lookingforstore
== 5)
864 identifyFoundObject(newEntry
);
868 clientReplyContext::purgeFoundGet(StoreEntry
*newEntry
)
870 if (newEntry
->isNull()) {
872 StoreEntry::getPublicByRequestMethod(this, http
->request
, Http::METHOD_HEAD
);
874 purgeFoundObject (newEntry
);
878 clientReplyContext::purgeFoundHead(StoreEntry
*newEntry
)
880 if (newEntry
->isNull())
883 purgeFoundObject (newEntry
);
887 clientReplyContext::purgeFoundObject(StoreEntry
*entry
)
889 assert (entry
&& !entry
->isNull());
891 if (EBIT_TEST(entry
->flags
, ENTRY_SPECIAL
)) {
892 http
->logType
= LOG_TCP_DENIED
;
893 ErrorState
*err
= clientBuildError(ERR_ACCESS_DENIED
, Http::scForbidden
, NULL
,
894 http
->getConn()->clientConnection
->remote
, http
->request
);
896 return; // XXX: leaking unused entry if some store does not keep it
899 StoreIOBuffer localTempBuffer
;
900 /* Swap in the metadata */
901 http
->storeEntry(entry
);
903 http
->storeEntry()->lock("clientReplyContext::purgeFoundObject");
904 http
->storeEntry()->createMemObject(storeId(), http
->log_uri
,
905 http
->request
->method
);
907 sc
= storeClientListAdd(http
->storeEntry(), this);
909 http
->logType
= LOG_TCP_HIT
;
913 localTempBuffer
.offset
= http
->out
.offset
;
915 localTempBuffer
.length
= next()->readBuffer
.length
;
917 localTempBuffer
.data
= next()->readBuffer
.data
;
919 storeClientCopy(sc
, http
->storeEntry(),
920 localTempBuffer
, CacheHit
, this);
924 clientReplyContext::purgeRequest()
926 debugs(88, 3, "Config2.onoff.enable_purge = " <<
927 Config2
.onoff
.enable_purge
);
929 if (!Config2
.onoff
.enable_purge
) {
930 http
->logType
= LOG_TCP_DENIED
;
931 ErrorState
*err
= clientBuildError(ERR_ACCESS_DENIED
, Http::scForbidden
, NULL
, http
->getConn()->clientConnection
->remote
, http
->request
);
936 /* Release both IP cache */
937 ipcacheInvalidate(http
->request
->GetHost());
939 if (!http
->flags
.purging
)
940 purgeRequestFindObjectToPurge();
946 clientReplyContext::purgeDoMissPurge()
948 http
->logType
= LOG_TCP_MISS
;
950 StoreEntry::getPublicByRequestMethod(this,http
->request
, Http::METHOD_GET
);
954 clientReplyContext::purgeDoPurgeGet(StoreEntry
*newEntry
)
957 /* Move to new() when that is created */
958 purgeStatus
= Http::scNotFound
;
960 if (!newEntry
->isNull()) {
961 /* Release the cached URI */
962 debugs(88, 4, "clientPurgeRequest: GET '" << newEntry
->url() << "'" );
964 neighborsHtcpClear(newEntry
, NULL
, http
->request
, HttpRequestMethod(Http::METHOD_GET
), HTCP_CLR_PURGE
);
967 purgeStatus
= Http::scOkay
;
971 StoreEntry::getPublicByRequestMethod(this, http
->request
, Http::METHOD_HEAD
);
975 clientReplyContext::purgeDoPurgeHead(StoreEntry
*newEntry
)
977 if (newEntry
&& !newEntry
->isNull()) {
978 debugs(88, 4, "clientPurgeRequest: HEAD '" << newEntry
->url() << "'" );
980 neighborsHtcpClear(newEntry
, NULL
, http
->request
, HttpRequestMethod(Http::METHOD_HEAD
), HTCP_CLR_PURGE
);
983 purgeStatus
= Http::scOkay
;
986 /* And for Vary, release the base URI if none of the headers was included in the request */
988 if (http
->request
->vary_headers
989 && !strstr(http
->request
->vary_headers
, "=")) {
990 StoreEntry
*entry
= storeGetPublic(urlCanonical(http
->request
), Http::METHOD_GET
);
993 debugs(88, 4, "clientPurgeRequest: Vary GET '" << entry
->url() << "'" );
995 neighborsHtcpClear(entry
, NULL
, http
->request
, HttpRequestMethod(Http::METHOD_GET
), HTCP_CLR_PURGE
);
998 purgeStatus
= Http::scOkay
;
1001 entry
= storeGetPublic(urlCanonical(http
->request
), Http::METHOD_HEAD
);
1004 debugs(88, 4, "clientPurgeRequest: Vary HEAD '" << entry
->url() << "'" );
1006 neighborsHtcpClear(entry
, NULL
, http
->request
, HttpRequestMethod(Http::METHOD_HEAD
), HTCP_CLR_PURGE
);
1009 purgeStatus
= Http::scOkay
;
1014 * Make a new entry to hold the reply to be written
1017 /* FIXME: This doesn't need to go through the store. Simply
1018 * push down the client chain
1020 createStoreEntry(http
->request
->method
, RequestFlags());
1022 triggerInitialStoreRead();
1024 HttpReply
*rep
= new HttpReply
;
1025 rep
->setHeaders(purgeStatus
, NULL
, NULL
, 0, 0, -1);
1026 http
->storeEntry()->replaceHttpReply(rep
);
1027 http
->storeEntry()->complete();
1031 clientReplyContext::traceReply(clientStreamNode
* node
)
1033 clientStreamNode
*nextNode
= (clientStreamNode
*)node
->node
.next
->data
;
1034 StoreIOBuffer localTempBuffer
;
1035 createStoreEntry(http
->request
->method
, RequestFlags());
1036 localTempBuffer
.offset
= nextNode
->readBuffer
.offset
+ headers_sz
;
1037 localTempBuffer
.length
= nextNode
->readBuffer
.length
;
1038 localTempBuffer
.data
= nextNode
->readBuffer
.data
;
1039 storeClientCopy(sc
, http
->storeEntry(),
1040 localTempBuffer
, SendMoreData
, this);
1041 http
->storeEntry()->releaseRequest();
1042 http
->storeEntry()->buffer();
1043 HttpReply
*rep
= new HttpReply
;
1044 rep
->setHeaders(Http::scOkay
, NULL
, "text/plain", http
->request
->prefixLen(), 0, squid_curtime
);
1045 http
->storeEntry()->replaceHttpReply(rep
);
1046 http
->request
->swapOut(http
->storeEntry());
1047 http
->storeEntry()->complete();
1050 #define SENDING_BODY 0
1051 #define SENDING_HDRSONLY 1
1053 clientReplyContext::checkTransferDone()
1055 StoreEntry
*entry
= http
->storeEntry();
1061 * For now, 'done_copying' is used for special cases like
1062 * Range and HEAD requests.
1064 if (http
->flags
.done_copying
)
1067 if (http
->request
->flags
.chunkedReply
&& !flags
.complete
) {
1068 // last-chunk was not sent
1073 * Handle STORE_OK objects.
1074 * objectLen(entry) will be set proprely.
1075 * RC: Does objectLen(entry) include the Headers?
1078 if (entry
->store_status
== STORE_OK
) {
1079 return storeOKTransferDone();
1081 return storeNotOKTransferDone();
1086 clientReplyContext::storeOKTransferDone() const
1088 assert(http
->storeEntry()->objectLen() >= 0);
1089 assert(http
->storeEntry()->objectLen() >= headers_sz
);
1090 if (http
->out
.offset
>= http
->storeEntry()->objectLen() - headers_sz
) {
1091 debugs(88,3,HERE
<< "storeOKTransferDone " <<
1092 " out.offset=" << http
->out
.offset
<<
1093 " objectLen()=" << http
->storeEntry()->objectLen() <<
1094 " headers_sz=" << headers_sz
);
1102 clientReplyContext::storeNotOKTransferDone() const
1105 * Now, handle STORE_PENDING objects
1107 MemObject
*mem
= http
->storeEntry()->mem_obj
;
1108 assert(mem
!= NULL
);
1109 assert(http
->request
!= NULL
);
1110 /* mem->reply was wrong because it uses the UPSTREAM header length!!! */
1111 HttpReply
const *curReply
= mem
->getReply();
1113 if (headers_sz
== 0)
1114 /* haven't found end of headers yet */
1118 * Figure out how much data we are supposed to send.
1119 * If we are sending a body and we don't have a content-length,
1120 * then we must wait for the object to become STORE_OK.
1122 if (curReply
->content_length
< 0)
1125 int64_t expectedLength
= curReply
->content_length
+ http
->out
.headers_sz
;
1127 if (http
->out
.size
< expectedLength
)
1130 debugs(88,3,HERE
<< "storeNotOKTransferDone " <<
1131 " out.size=" << http
->out
.size
<<
1132 " expectedLength=" << expectedLength
);
1137 /* A write has completed, what is the next status based on the
1138 * canonical request data?
1139 * 1 something is wrong
1140 * 0 nothing is wrong.
1144 clientHttpRequestStatus(int fd
, ClientHttpRequest
const *http
)
1146 #if SIZEOF_INT64_T == 4
1147 if (http
->out
.size
> 0x7FFF0000) {
1148 debugs(88, DBG_IMPORTANT
, "WARNING: closing FD " << fd
<< " to prevent out.size counter overflow");
1149 debugs(88, DBG_IMPORTANT
, "\tclient " << http
->getConn()->peer
);
1150 debugs(88, DBG_IMPORTANT
, "\treceived " << http
->out
.size
<< " bytes");
1151 debugs(88, DBG_IMPORTANT
, "\tURI " << http
->log_uri
);
1155 if (http
->out
.offset
> 0x7FFF0000) {
1156 debugs(88, DBG_IMPORTANT
, "WARNING: closing FD " << fd
< " to prevent out.offset counter overflow");
1157 debugs(88, DBG_IMPORTANT
, "\tclient " << http
->getConn()->peer
);
1158 debugs(88, DBG_IMPORTANT
, "\treceived " << http
->out
.size
<< " bytes, offset " << http
->out
.offset
);
1159 debugs(88, DBG_IMPORTANT
, "\tURI " << http
->log_uri
);
1168 * *http is a valid structure.
1169 * fd is either -1, or an open fd.
1171 * TODO: enumify this
1173 * This function is used by any http request sink, to determine the status
1176 clientStream_status_t
1177 clientReplyStatus(clientStreamNode
* aNode
, ClientHttpRequest
* http
)
1179 clientReplyContext
*context
= dynamic_cast<clientReplyContext
*>(aNode
->data
.getRaw());
1181 assert (context
->http
== http
);
1182 return context
->replyStatus();
1185 clientStream_status_t
1186 clientReplyContext::replyStatus()
1189 /* Here because lower nodes don't need it */
1191 if (http
->storeEntry() == NULL
) {
1192 debugs(88, 5, "clientReplyStatus: no storeEntry");
1193 return STREAM_FAILED
; /* yuck, but what can we do? */
1196 if (EBIT_TEST(http
->storeEntry()->flags
, ENTRY_ABORTED
)) {
1197 /* TODO: Could upstream read errors (result.flags.error) be
1198 * lost, and result in undersize requests being considered
1199 * complete. Should we tcp reset such connections ?
1201 debugs(88, 5, "clientReplyStatus: aborted storeEntry");
1202 return STREAM_FAILED
;
1205 if ((done
= checkTransferDone()) != 0 || flags
.complete
) {
1206 debugs(88, 5, "clientReplyStatus: transfer is DONE: " << done
<< flags
.complete
);
1207 /* Ok we're finished, but how? */
1209 const int64_t expectedBodySize
=
1210 http
->storeEntry()->getReply()->bodySize(http
->request
->method
);
1211 if (!http
->request
->flags
.proxyKeepalive
&& expectedBodySize
< 0) {
1212 debugs(88, 5, "clientReplyStatus: closing, content_length < 0");
1213 return STREAM_FAILED
;
1217 debugs(88, 5, "clientReplyStatus: closing, !done, but read 0 bytes");
1218 return STREAM_FAILED
;
1221 if (expectedBodySize
>= 0 && !http
->gotEnough()) {
1222 debugs(88, 5, "clientReplyStatus: client didn't get all it expected");
1223 return STREAM_UNPLANNED_COMPLETE
;
1226 debugs(88, 5, "clientReplyStatus: stream complete; keepalive=" <<
1227 http
->request
->flags
.proxyKeepalive
);
1228 return STREAM_COMPLETE
;
1231 // XXX: Should this be checked earlier? We could return above w/o checking.
1232 if (reply
->receivedBodyTooLarge(*http
->request
, http
->out
.offset
- 4096)) {
1233 /* 4096 is a margin for the HTTP headers included in out.offset */
1234 debugs(88, 5, "clientReplyStatus: client reply body is too large");
1235 return STREAM_FAILED
;
1241 /* Responses with no body will not have a content-type header,
1242 * which breaks the rep_mime_type acl, which
1243 * coincidentally, is the most common acl for reply access lists.
1244 * A better long term fix for this is to allow acl matchs on the various
1245 * status codes, and then supply a default ruleset that puts these
1246 * codes before any user defines access entries. That way the user
1247 * can choose to block these responses where appropriate, but won't get
1248 * mysterious breakages.
1251 clientReplyContext::alwaysAllowResponse(Http::StatusCode sline
) const
1257 case Http::scContinue
:
1259 case Http::scSwitchingProtocols
:
1261 case Http::scProcessing
:
1263 case Http::scNoContent
:
1265 case Http::scNotModified
:
1277 * Generate the reply headers sent to client.
1279 * Filters out unwanted entries and hop-by-hop from original reply header
1280 * then adds extra entries if we have more info than origin server
1281 * then adds Squid specific entries
1284 clientReplyContext::buildReplyHeader()
1286 HttpHeader
*hdr
= &reply
->header
;
1287 int is_hit
= logTypeIsATcpHit(http
->logType
);
1288 HttpRequest
*request
= http
->request
;
1289 #if DONT_FILTER_THESE
1290 /* but you might want to if you run Squid as an HTTP accelerator */
1291 /* hdr->delById(HDR_ACCEPT_RANGES); */
1292 hdr
->delById(HDR_ETAG
);
1296 hdr
->delById(HDR_SET_COOKIE
);
1297 // TODO: RFC 2965 : Must honour Cache-Control: no-cache="set-cookie2" and remove header.
1299 // if there is not configured a peer proxy with login=PASS or login=PASSTHRU option enabled
1300 // remove the Proxy-Authenticate header
1301 if ( !request
->peer_login
|| (strcmp(request
->peer_login
,"PASS") != 0 && strcmp(request
->peer_login
,"PASSTHRU") != 0))
1302 reply
->header
.delById(HDR_PROXY_AUTHENTICATE
);
1304 reply
->header
.removeHopByHopEntries();
1306 // if (request->range)
1307 // clientBuildRangeHeader(http, reply);
1310 * Add a estimated Age header on cache hits.
1314 * Remove any existing Age header sent by upstream caches
1315 * (note that the existing header is passed along unmodified
1318 hdr
->delById(HDR_AGE
);
1320 * This adds the calculated object age. Note that the details of the
1321 * age calculation is performed by adjusting the timestamp in
1322 * StoreEntry::timestampsSet(), not here.
1324 if (EBIT_TEST(http
->storeEntry()->flags
, ENTRY_SPECIAL
)) {
1325 hdr
->delById(HDR_DATE
);
1326 hdr
->insertTime(HDR_DATE
, squid_curtime
);
1327 } else if (http
->getConn() && http
->getConn()->port
->actAsOrigin
) {
1328 // Swap the Date: header to current time if we are simulating an origin
1329 HttpHeaderEntry
*h
= hdr
->findEntry(HDR_DATE
);
1331 hdr
->putExt("X-Origin-Date", h
->value
.termedBuf());
1332 hdr
->delById(HDR_DATE
);
1333 hdr
->insertTime(HDR_DATE
, squid_curtime
);
1334 h
= hdr
->findEntry(HDR_EXPIRES
);
1335 if (h
&& http
->storeEntry()->expires
>= 0) {
1336 hdr
->putExt("X-Origin-Expires", h
->value
.termedBuf());
1337 hdr
->delById(HDR_EXPIRES
);
1338 hdr
->insertTime(HDR_EXPIRES
, squid_curtime
+ http
->storeEntry()->expires
- http
->storeEntry()->timestamp
);
1340 if (http
->storeEntry()->timestamp
<= squid_curtime
) {
1341 // put X-Cache-Age: instead of Age:
1343 snprintf(age
, sizeof(age
), "%ld", (long int) squid_curtime
- http
->storeEntry()->timestamp
);
1344 hdr
->putExt("X-Cache-Age", age
);
1346 } else if (http
->storeEntry()->timestamp
<= squid_curtime
) {
1347 hdr
->putInt(HDR_AGE
,
1348 squid_curtime
- http
->storeEntry()->timestamp
);
1349 /* Signal old objects. NB: rfc 2616 is not clear,
1350 * by implication, on whether we should do this to all
1351 * responses, or only cache hits.
1352 * 14.46 states it ONLY applys for heuristically caclulated
1353 * freshness values, 13.2.4 doesn't specify the same limitation.
1354 * We interpret RFC 2616 under the combination.
1356 /* TODO: if maxage or s-maxage is present, don't do this */
1358 if (squid_curtime
- http
->storeEntry()->timestamp
>= 86400) {
1360 snprintf (tbuf
, sizeof(tbuf
), "%s %s %s",
1362 "This cache hit is still fresh and more than 1 day old");
1363 hdr
->putStr(HDR_WARNING
, tbuf
);
1368 /* RFC 2616: Section 14.18
1370 * Add a Date: header if missing.
1371 * We have access to a clock therefore are required to amend any shortcoming in servers.
1373 * NP: done after Age: to prevent ENTRY_SPECIAL double-handling this header.
1375 if ( !hdr
->has(HDR_DATE
) ) {
1376 if (!http
->storeEntry())
1377 hdr
->insertTime(HDR_DATE
, squid_curtime
);
1378 else if (http
->storeEntry()->timestamp
> 0)
1379 hdr
->insertTime(HDR_DATE
, http
->storeEntry()->timestamp
);
1381 debugs(88,DBG_IMPORTANT
,"BUG 3279: HTTP reply without Date:");
1382 /* dump something useful about the problem */
1383 http
->storeEntry()->dump(DBG_IMPORTANT
);
1387 // add Warnings required by RFC 2616 if serving a stale hit
1388 if (http
->request
->flags
.staleIfHit
&& logTypeIsATcpHit(http
->logType
)) {
1389 hdr
->putWarning(110, "Response is stale");
1390 if (http
->request
->flags
.needValidation
)
1391 hdr
->putWarning(111, "Revalidation failed");
1394 /* Filter unproxyable authentication types */
1395 if (http
->logType
!= LOG_TCP_DENIED
&&
1396 hdr
->has(HDR_WWW_AUTHENTICATE
)) {
1397 HttpHeaderPos pos
= HttpHeaderInitPos
;
1400 int connection_auth_blocked
= 0;
1401 while ((e
= hdr
->getEntry(&pos
))) {
1402 if (e
->id
== HDR_WWW_AUTHENTICATE
) {
1403 const char *value
= e
->value
.rawBuf();
1405 if ((strncasecmp(value
, "NTLM", 4) == 0 &&
1406 (value
[4] == '\0' || value
[4] == ' '))
1408 (strncasecmp(value
, "Negotiate", 9) == 0 &&
1409 (value
[9] == '\0' || value
[9] == ' '))
1411 (strncasecmp(value
, "Kerberos", 8) == 0 &&
1412 (value
[8] == '\0' || value
[8] == ' '))) {
1413 if (request
->flags
.connectionAuthDisabled
) {
1414 hdr
->delAt(pos
, connection_auth_blocked
);
1417 request
->flags
.mustKeepalive
= true;
1418 if (!request
->flags
.accelerated
&& !request
->flags
.intercepted
) {
1419 httpHeaderPutStrf(hdr
, HDR_PROXY_SUPPORT
, "Session-Based-Authentication");
1421 We send "[Proxy-]Connection: Proxy-Support" header to mark
1422 Proxy-Support as a hop-by-hop header for intermediaries that do not
1423 understand the semantics of this header. The RFC should have included
1424 this recommendation.
1426 httpHeaderPutStrf(hdr
, HDR_CONNECTION
, "Proxy-support");
1433 if (connection_auth_blocked
)
1438 /* Handle authentication headers */
1439 if (http
->logType
== LOG_TCP_DENIED
&&
1440 ( reply
->sline
.status() == Http::scProxyAuthenticationRequired
||
1441 reply
->sline
.status() == Http::scUnauthorized
)
1443 /* Add authentication header */
1444 /*! \todo alter errorstate to be accel on|off aware. The 0 on the next line
1445 * depends on authenticate behaviour: all schemes to date send no extra
1446 * data on 407/401 responses, and do not check the accel state on 401/407
1449 authenticateFixHeader(reply
, request
->auth_user_request
, request
, 0, 1);
1450 } else if (request
->auth_user_request
!= NULL
)
1451 authenticateFixHeader(reply
, request
->auth_user_request
, request
, http
->flags
.accel
, 0);
1454 /* Append X-Cache */
1455 httpHeaderPutStrf(hdr
, HDR_X_CACHE
, "%s from %s",
1456 is_hit
? "HIT" : "MISS", getMyHostname());
1458 #if USE_CACHE_DIGESTS
1459 /* Append X-Cache-Lookup: -- temporary hack, to be removed @?@ @?@ */
1460 httpHeaderPutStrf(hdr
, HDR_X_CACHE_LOOKUP
, "%s from %s:%d",
1461 lookup_type
? lookup_type
: "NONE",
1462 getMyHostname(), getMyPort());
1466 const bool maySendChunkedReply
= !request
->multipartRangeRequest() &&
1467 reply
->sline
.protocol
== AnyP::PROTO_HTTP
&& // response is HTTP
1468 (request
->http_ver
>= Http::ProtocolVersion(1, 1));
1470 /* Check whether we should send keep-alive */
1471 if (!Config
.onoff
.error_pconns
&& reply
->sline
.status() >= 400 && !request
->flags
.mustKeepalive
) {
1472 debugs(33, 3, "clientBuildReplyHeader: Error, don't keep-alive");
1473 request
->flags
.proxyKeepalive
= false;
1474 } else if (!Config
.onoff
.client_pconns
&& !request
->flags
.mustKeepalive
) {
1475 debugs(33, 2, "clientBuildReplyHeader: Connection Keep-Alive not requested by admin or client");
1476 request
->flags
.proxyKeepalive
= false;
1477 } else if (request
->flags
.proxyKeepalive
&& shutting_down
) {
1478 debugs(88, 3, "clientBuildReplyHeader: Shutting down, don't keep-alive.");
1479 request
->flags
.proxyKeepalive
= false;
1480 } else if (request
->flags
.connectionAuth
&& !reply
->keep_alive
) {
1481 debugs(33, 2, "clientBuildReplyHeader: Connection oriented auth but server side non-persistent");
1482 request
->flags
.proxyKeepalive
= false;
1483 } else if (reply
->bodySize(request
->method
) < 0 && !maySendChunkedReply
) {
1484 debugs(88, 3, "clientBuildReplyHeader: can't keep-alive, unknown body size" );
1485 request
->flags
.proxyKeepalive
= false;
1486 } else if (fdUsageHigh()&& !request
->flags
.mustKeepalive
) {
1487 debugs(88, 3, "clientBuildReplyHeader: Not many unused FDs, can't keep-alive");
1488 request
->flags
.proxyKeepalive
= false;
1489 } else if (request
->flags
.sslBumped
&& !reply
->persistent()) {
1490 // We do not really have to close, but we pretend we are a tunnel.
1491 debugs(88, 3, "clientBuildReplyHeader: bumped reply forces close");
1492 request
->flags
.proxyKeepalive
= false;
1493 } else if (request
->pinnedConnection() && !reply
->persistent()) {
1494 // The peer wants to close the pinned connection
1495 debugs(88, 3, "pinned reply forces close");
1496 request
->flags
.proxyKeepalive
= false;
1499 // Decide if we send chunked reply
1500 if (maySendChunkedReply
&&
1501 request
->flags
.proxyKeepalive
&&
1502 reply
->bodySize(request
->method
) < 0) {
1503 debugs(88, 3, "clientBuildReplyHeader: chunked reply");
1504 request
->flags
.chunkedReply
= true;
1505 hdr
->putStr(HDR_TRANSFER_ENCODING
, "chunked");
1509 if (Config
.onoff
.via
) {
1510 LOCAL_ARRAY(char, bbuf
, MAX_URL
+ 32);
1512 hdr
->getList(HDR_VIA
, &strVia
);
1513 snprintf(bbuf
, MAX_URL
+ 32, "%d.%d %s",
1514 reply
->sline
.version
.major
,
1515 reply
->sline
.version
.minor
,
1517 strListAdd(&strVia
, bbuf
, ',');
1518 hdr
->delById(HDR_VIA
);
1519 hdr
->putStr(HDR_VIA
, strVia
.termedBuf());
1521 /* Signal keep-alive or close explicitly */
1522 hdr
->putStr(HDR_CONNECTION
, request
->flags
.proxyKeepalive
? "keep-alive" : "close");
1524 #if ADD_X_REQUEST_URI
1526 * Knowing the URI of the request is useful when debugging persistent
1527 * connections in a client; we cannot guarantee the order of http headers,
1528 * but X-Request-URI is likely to be the very last header to ease use from a
1529 * debugger [hdr->entries.count-1].
1531 hdr
->putStr(HDR_X_REQUEST_URI
,
1532 http
->memOjbect()->url
? http
->memObject()->url
: http
->uri
);
1536 /* Surrogate-Control requires Surrogate-Capability from upstream to pass on */
1537 if ( hdr
->has(HDR_SURROGATE_CONTROL
) ) {
1538 if (!request
->header
.has(HDR_SURROGATE_CAPABILITY
)) {
1539 hdr
->delById(HDR_SURROGATE_CONTROL
);
1541 /* TODO: else case: drop any controls intended specifically for our surrogate ID */
1544 httpHdrMangleList(hdr
, request
, ROR_REPLY
);
1548 clientReplyContext::cloneReply()
1550 assert(reply
== NULL
);
1552 reply
= http
->storeEntry()->getReply()->clone();
1555 if (reply
->sline
.protocol
== AnyP::PROTO_HTTP
) {
1556 /* RFC 2616 requires us to advertise our 1.1 version (but only on real HTTP traffic) */
1557 reply
->sline
.version
= Http::ProtocolVersion(1,1);
1560 /* do header conversions */
1564 /// Safely disposes of an entry pointing to a cache hit that we do not want.
1565 /// We cannot just ignore the entry because it may be locking or otherwise
1566 /// holding an associated cache resource of some sort.
1568 clientReplyContext::forgetHit()
1570 StoreEntry
*e
= http
->storeEntry();
1571 assert(e
); // or we are not dealing with a hit
1572 // We probably have not locked the entry earlier, unfortunately. We lock it
1573 // now so that we can unlock two lines later (and trigger cleanup).
1574 // Ideally, ClientHttpRequest::storeEntry() should lock/unlock, but it is
1575 // used so inconsistently that simply adding locking there leads to bugs.
1576 e
->lock("clientReplyContext::forgetHit");
1577 http
->storeEntry(NULL
);
1578 e
->unlock("clientReplyContext::forgetHit"); // may delete e
1582 clientReplyContext::identifyStoreObject()
1584 HttpRequest
*r
= http
->request
;
1586 if (r
->flags
.cachable
|| r
->flags
.internal
) {
1587 lookingforstore
= 5;
1588 StoreEntry::getPublicByRequest (this, r
);
1590 identifyFoundObject (NullStoreEntry::getInstance());
1595 * Check state of the current StoreEntry object.
1596 * to see if we can determine the final status of the request.
1599 clientReplyContext::identifyFoundObject(StoreEntry
*newEntry
)
1601 StoreEntry
*e
= newEntry
;
1602 HttpRequest
*r
= http
->request
;
1604 /** \li If the entry received isNull() then we ignore it. */
1606 http
->storeEntry(NULL
);
1608 http
->storeEntry(e
);
1611 e
= http
->storeEntry();
1613 /* Release IP-cache entries on reload */
1614 /** \li If the request has no-cache flag set or some no_cache HACK in operation we
1615 * 'invalidate' the cached IP entries for this request ???
1617 if (r
->flags
.noCache
|| r
->flags
.noCacheHack())
1618 ipcacheInvalidateNegative(r
->GetHost());
1620 #if USE_CACHE_DIGESTS
1621 lookup_type
= http
->storeEntry() ? "HIT" : "MISS";
1624 if (NULL
== http
->storeEntry()) {
1625 /** \li If no StoreEntry object is current assume this object isn't in the cache set MISS*/
1626 debugs(85, 3, "StoreEntry is NULL - MISS");
1627 http
->logType
= LOG_TCP_MISS
;
1632 if (Config
.onoff
.offline
) {
1633 /** \li If we are running in offline mode set to HIT */
1634 debugs(85, 3, "offline HIT " << *e
);
1635 http
->logType
= LOG_TCP_HIT
;
1640 if (http
->redirect
.status
) {
1641 /** \li If redirection status is True force this to be a MISS */
1642 debugs(85, 3, "REDIRECT status forced StoreEntry to NULL (no body on 3XX responses) " << *e
);
1644 http
->logType
= LOG_TCP_REDIRECT
;
1649 if (!e
->validToSend()) {
1650 debugs(85, 3, "!storeEntryValidToSend MISS " << *e
);
1652 http
->logType
= LOG_TCP_MISS
;
1657 if (EBIT_TEST(e
->flags
, ENTRY_SPECIAL
)) {
1658 /* \li Special entries are always hits, no matter what the client says */
1659 debugs(85, 3, "ENTRY_SPECIAL HIT " << *e
);
1660 http
->logType
= LOG_TCP_HIT
;
1665 if (r
->flags
.noCache
) {
1666 debugs(85, 3, "no-cache REFRESH MISS " << *e
);
1668 http
->logType
= LOG_TCP_CLIENT_REFRESH_MISS
;
1673 debugs(85, 3, "default HIT " << *e
);
1674 http
->logType
= LOG_TCP_HIT
;
1679 * Request more data from the store for the client Stream
1680 * This is *the* entry point to this module.
1683 * - This is the head of the list.
1684 * - There is at least one more node.
1685 * - Data context is not null
1688 clientGetMoreData(clientStreamNode
* aNode
, ClientHttpRequest
* http
)
1690 /* Test preconditions */
1691 assert(aNode
!= NULL
);
1692 assert(cbdataReferenceValid(aNode
));
1693 assert(aNode
->node
.prev
== NULL
);
1694 assert(aNode
->node
.next
!= NULL
);
1695 clientReplyContext
*context
= dynamic_cast<clientReplyContext
*>(aNode
->data
.getRaw());
1697 assert(context
->http
== http
);
1699 clientStreamNode
*next
= ( clientStreamNode
*)aNode
->node
.next
->data
;
1701 if (!context
->ourNode
)
1702 context
->ourNode
= aNode
;
1704 /* no cbdatareference, this is only used once, and safely */
1705 if (context
->flags
.storelogiccomplete
) {
1706 StoreIOBuffer tempBuffer
;
1707 tempBuffer
.offset
= next
->readBuffer
.offset
+ context
->headers_sz
;
1708 tempBuffer
.length
= next
->readBuffer
.length
;
1709 tempBuffer
.data
= next
->readBuffer
.data
;
1711 storeClientCopy(context
->sc
, http
->storeEntry(),
1712 tempBuffer
, clientReplyContext::SendMoreData
, context
);
1716 if (context
->http
->request
->method
== Http::METHOD_PURGE
) {
1717 context
->purgeRequest();
1721 // OPTIONS with Max-Forwards:0 handled in clientProcessRequest()
1723 if (context
->http
->request
->method
== Http::METHOD_TRACE
) {
1724 if (context
->http
->request
->header
.getInt64(HDR_MAX_FORWARDS
) == 0) {
1725 context
->traceReply(aNode
);
1729 /* continue forwarding, not finished yet. */
1730 http
->logType
= LOG_TCP_MISS
;
1732 context
->doGetMoreData();
1734 context
->identifyStoreObject();
1738 clientReplyContext::doGetMoreData()
1740 /* We still have to do store logic processing - vary, cache hit etc */
1741 if (http
->storeEntry() != NULL
) {
1742 /* someone found the object in the cache for us */
1743 StoreIOBuffer localTempBuffer
;
1745 http
->storeEntry()->lock("clientReplyContext::doGetMoreData");
1747 MemObject
*mem_obj
= http
->storeEntry()->makeMemObject();
1748 if (!mem_obj
->hasUris()) {
1750 * This if-block exists because we don't want to clobber
1751 * a preexiting mem_obj->method value if the mem_obj
1752 * already exists. For example, when a HEAD request
1753 * is a cache hit for a GET response, we want to keep
1754 * the method as GET.
1756 mem_obj
->setUris(storeId(), http
->log_uri
, http
->request
->method
);
1758 * Here we can see if the object was
1759 * created using URL or alternative StoreID from helper.
1761 debugs(88, 3, "storeId: " << http
->storeEntry()->mem_obj
->storeId());
1764 sc
= storeClientListAdd(http
->storeEntry(), this);
1766 sc
->setDelayId(DelayId::DelayClient(http
));
1769 assert(http
->logType
== LOG_TCP_HIT
);
1771 /* guarantee nothing has been sent yet! */
1772 assert(http
->out
.size
== 0);
1773 assert(http
->out
.offset
== 0);
1775 if (Ip::Qos::TheConfig
.isHitTosActive()) {
1776 Ip::Qos::doTosLocalHit(http
->getConn()->clientConnection
);
1779 if (Ip::Qos::TheConfig
.isHitNfmarkActive()) {
1780 Ip::Qos::doNfmarkLocalHit(http
->getConn()->clientConnection
);
1783 localTempBuffer
.offset
= reqofs
;
1784 localTempBuffer
.length
= getNextNode()->readBuffer
.length
;
1785 localTempBuffer
.data
= getNextNode()->readBuffer
.data
;
1786 storeClientCopy(sc
, http
->storeEntry(), localTempBuffer
, CacheHit
, this);
1788 /* MISS CASE, http->logType is already set! */
1793 /** The next node has removed itself from the stream. */
1795 clientReplyDetach(clientStreamNode
* node
, ClientHttpRequest
* http
)
1797 /** detach from the stream */
1798 clientStreamDetach(node
, http
);
1802 * Accepts chunk of a http message in buf, parses prefix, filters headers and
1803 * such, writes processed message to the message recipient
1806 clientReplyContext::SendMoreData(void *data
, StoreIOBuffer result
)
1808 clientReplyContext
*context
= static_cast<clientReplyContext
*>(data
);
1809 context
->sendMoreData (result
);
1813 clientReplyContext::makeThisHead()
1815 /* At least, I think thats what this does */
1816 dlinkDelete(&http
->active
, &ClientActiveRequests
);
1817 dlinkAdd(http
, &http
->active
, &ClientActiveRequests
);
1821 clientReplyContext::errorInStream(StoreIOBuffer
const &result
, size_t const &sizeToProcess
)const
1823 return /* aborted request */
1824 (http
->storeEntry() && EBIT_TEST(http
->storeEntry()->flags
, ENTRY_ABORTED
)) ||
1825 /* Upstream read error */ (result
.flags
.error
) ||
1826 /* Upstream EOF */ (sizeToProcess
== 0);
1830 clientReplyContext::sendStreamError(StoreIOBuffer
const &result
)
1832 /** call clientWriteComplete so the client socket gets closed
1834 * We call into the stream, because we don't know that there is a
1837 debugs(88, 5, "clientReplyContext::sendStreamError: A stream error has occured, marking as complete and sending no data.");
1838 StoreIOBuffer localTempBuffer
;
1840 http
->request
->flags
.streamError
= true;
1841 localTempBuffer
.flags
.error
= result
.flags
.error
;
1842 clientStreamCallback((clientStreamNode
*)http
->client_stream
.head
->data
, http
, NULL
,
1847 clientReplyContext::pushStreamData(StoreIOBuffer
const &result
, char *source
)
1849 StoreIOBuffer localTempBuffer
;
1851 if (result
.length
== 0) {
1852 debugs(88, 5, "clientReplyContext::pushStreamData: marking request as complete due to 0 length store result");
1856 assert(result
.offset
- headers_sz
== next()->readBuffer
.offset
);
1857 localTempBuffer
.offset
= result
.offset
- headers_sz
;
1858 localTempBuffer
.length
= result
.length
;
1860 if (localTempBuffer
.length
)
1861 localTempBuffer
.data
= source
;
1863 clientStreamCallback((clientStreamNode
*)http
->client_stream
.head
->data
, http
, NULL
,
1868 clientReplyContext::next() const
1870 assert ( (clientStreamNode
*)http
->client_stream
.head
->next
->data
== getNextNode());
1871 return getNextNode();
1875 clientReplyContext::sendBodyTooLargeError()
1877 Ip::Address tmp_noaddr
;
1878 tmp_noaddr
.setNoAddr(); // TODO: make a global const
1879 http
->logType
= LOG_TCP_DENIED_REPLY
;
1880 ErrorState
*err
= clientBuildError(ERR_TOO_BIG
, Http::scForbidden
, NULL
,
1881 http
->getConn() != NULL
? http
->getConn()->clientConnection
->remote
: tmp_noaddr
,
1883 removeClientStoreReference(&(sc
), http
);
1884 HTTPMSGUNLOCK(reply
);
1889 /// send 412 (Precondition Failed) to client
1891 clientReplyContext::sendPreconditionFailedError()
1893 http
->logType
= LOG_TCP_HIT
;
1894 ErrorState
*const err
=
1895 clientBuildError(ERR_PRECONDITION_FAILED
, Http::scPreconditionFailed
,
1896 NULL
, http
->getConn()->clientConnection
->remote
, http
->request
);
1897 removeClientStoreReference(&sc
, http
);
1898 HTTPMSGUNLOCK(reply
);
1902 /// send 304 (Not Modified) to client
1904 clientReplyContext::sendNotModified()
1906 StoreEntry
*e
= http
->storeEntry();
1907 const time_t timestamp
= e
->timestamp
;
1908 HttpReply
*const temprep
= e
->getReply()->make304();
1909 http
->logType
= LOG_TCP_IMS_HIT
;
1910 removeClientStoreReference(&sc
, http
);
1911 createStoreEntry(http
->request
->method
, RequestFlags());
1912 e
= http
->storeEntry();
1913 // Copy timestamp from the original entry so the 304
1914 // reply has a meaningful Age: header.
1916 e
->timestamp
= timestamp
;
1917 e
->replaceHttpReply(temprep
);
1920 * TODO: why put this in the store and then serialise it and
1921 * then parse it again. Simply mark the request complete in
1922 * our context and write the reply struct to the client side.
1924 triggerInitialStoreRead();
1927 /// send 304 (Not Modified) or 412 (Precondition Failed) to client
1928 /// depending on request method
1930 clientReplyContext::sendNotModifiedOrPreconditionFailedError()
1932 if (http
->request
->method
== Http::METHOD_GET
||
1933 http
->request
->method
== Http::METHOD_HEAD
)
1936 sendPreconditionFailedError();
1940 clientReplyContext::processReplyAccess ()
1942 /* NP: this should probably soft-fail to a zero-sized-reply error ?? */
1945 /** Don't block our own responses or HTTP status messages */
1946 if (http
->logType
== LOG_TCP_DENIED
||
1947 http
->logType
== LOG_TCP_DENIED_REPLY
||
1948 alwaysAllowResponse(reply
->sline
.status())) {
1949 headers_sz
= reply
->hdr_sz
;
1950 processReplyAccessResult(ACCESS_ALLOWED
);
1954 /** Check for reply to big error */
1955 if (reply
->expectedBodyTooLarge(*http
->request
)) {
1956 sendBodyTooLargeError();
1960 headers_sz
= reply
->hdr_sz
;
1962 /** check for absent access controls (permit by default) */
1963 if (!Config
.accessList
.reply
) {
1964 processReplyAccessResult(ACCESS_ALLOWED
);
1968 /** Process http_reply_access lists */
1969 ACLFilledChecklist
*replyChecklist
=
1970 clientAclChecklistCreate(Config
.accessList
.reply
, http
);
1971 replyChecklist
->reply
= reply
;
1972 HTTPMSGLOCK(replyChecklist
->reply
);
1973 replyChecklist
->nonBlockingCheck(ProcessReplyAccessResult
, this);
1977 clientReplyContext::ProcessReplyAccessResult(allow_t rv
, void *voidMe
)
1979 clientReplyContext
*me
= static_cast<clientReplyContext
*>(voidMe
);
1980 me
->processReplyAccessResult(rv
);
1984 clientReplyContext::processReplyAccessResult(const allow_t
&accessAllowed
)
1986 debugs(88, 2, "The reply for " << RequestMethodStr(http
->request
->method
)
1987 << " " << http
->uri
<< " is " << accessAllowed
<< ", because it matched '"
1988 << (AclMatchedName
? AclMatchedName
: "NO ACL's") << "'" );
1990 if (accessAllowed
!= ACCESS_ALLOWED
) {
1993 page_id
= aclGetDenyInfoPage(&Config
.denyInfoList
, AclMatchedName
, 1);
1995 http
->logType
= LOG_TCP_DENIED_REPLY
;
1997 if (page_id
== ERR_NONE
)
1998 page_id
= ERR_ACCESS_DENIED
;
2000 Ip::Address tmp_noaddr
;
2001 tmp_noaddr
.setNoAddr();
2002 err
= clientBuildError(page_id
, Http::scForbidden
, NULL
,
2003 http
->getConn() != NULL
? http
->getConn()->clientConnection
->remote
: tmp_noaddr
,
2006 removeClientStoreReference(&sc
, http
);
2008 HTTPMSGUNLOCK(reply
);
2015 /* Ok, the reply is allowed, */
2016 http
->loggingEntry(http
->storeEntry());
2018 ssize_t body_size
= reqofs
- reply
->hdr_sz
;
2019 if (body_size
< 0) {
2020 reqofs
= reply
->hdr_sz
;
2024 debugs(88, 3, "clientReplyContext::sendMoreData: Appending " <<
2025 (int) body_size
<< " bytes after " << reply
->hdr_sz
<<
2026 " bytes of headers");
2030 if (http
->flags
.accel
&& reply
->sline
.status() != Http::scForbidden
&&
2031 !alwaysAllowResponse(reply
->sline
.status()) &&
2032 esiEnableProcessing(reply
)) {
2033 debugs(88, 2, "Enabling ESI processing for " << http
->uri
);
2034 clientStreamInsertHead(&http
->client_stream
, esiStreamRead
,
2035 esiProcessStream
, esiStreamDetach
, esiStreamStatus
, NULL
);
2040 if (http
->request
->method
== Http::METHOD_HEAD
) {
2041 /* do not forward body for HEAD replies */
2043 http
->flags
.done_copying
= true;
2047 assert (!flags
.headersSent
);
2048 flags
.headersSent
= true;
2050 StoreIOBuffer localTempBuffer
;
2051 char *buf
= next()->readBuffer
.data
;
2052 char *body_buf
= buf
+ reply
->hdr_sz
;
2054 //Server side may disable ranges under some circumstances.
2056 if ((!http
->request
->range
))
2057 next()->readBuffer
.offset
= 0;
2059 body_buf
-= next()->readBuffer
.offset
;
2061 if (next()->readBuffer
.offset
!= 0) {
2062 if (next()->readBuffer
.offset
> body_size
) {
2063 /* Can't use any of the body we received. send nothing */
2064 localTempBuffer
.length
= 0;
2065 localTempBuffer
.data
= NULL
;
2067 localTempBuffer
.length
= body_size
- next()->readBuffer
.offset
;
2068 localTempBuffer
.data
= body_buf
+ next()->readBuffer
.offset
;
2071 localTempBuffer
.length
= body_size
;
2072 localTempBuffer
.data
= body_buf
;
2075 /* TODO??: move the data in the buffer back by the request header size */
2076 clientStreamCallback((clientStreamNode
*)http
->client_stream
.head
->data
,
2077 http
, reply
, localTempBuffer
);
2083 clientReplyContext::sendMoreData (StoreIOBuffer result
)
2088 StoreEntry
*entry
= http
->storeEntry();
2090 ConnStateData
* conn
= http
->getConn();
2092 // too late, our conn is closing
2093 // TODO: should we also quit?
2095 debugs(33,3, "not sending more data to a closed connection" );
2098 if (!conn
->isOpen()) {
2099 debugs(33,3, "not sending more data to closing connection " << conn
->clientConnection
);
2102 if (conn
->pinning
.zeroReply
) {
2103 debugs(33,3, "not sending more data after a pinned zero reply " << conn
->clientConnection
);
2107 char *buf
= next()->readBuffer
.data
;
2109 if (buf
!= result
.data
) {
2110 /* we've got to copy some data */
2111 assert(result
.length
<= next()->readBuffer
.length
);
2112 memcpy(buf
, result
.data
, result
.length
);
2115 if (reqofs
==0 && !logTypeIsATcpHit(http
->logType
) && Comm::IsConnOpen(conn
->clientConnection
)) {
2116 if (Ip::Qos::TheConfig
.isHitTosActive()) {
2117 Ip::Qos::doTosLocalMiss(conn
->clientConnection
, http
->request
->hier
.code
);
2119 if (Ip::Qos::TheConfig
.isHitNfmarkActive()) {
2120 Ip::Qos::doNfmarkLocalMiss(conn
->clientConnection
, http
->request
->hier
.code
);
2124 /* We've got the final data to start pushing... */
2125 flags
.storelogiccomplete
= 1;
2127 reqofs
+= result
.length
;
2129 assert(reqofs
<= HTTP_REQBUF_SZ
|| flags
.headersSent
);
2131 assert(http
->request
!= NULL
);
2133 /* ESI TODO: remove this assert once everything is stable */
2134 assert(http
->client_stream
.head
->data
2135 && cbdataReferenceValid(http
->client_stream
.head
->data
));
2139 debugs(88, 5, "clientReplyContext::sendMoreData: " << http
->uri
<< ", " <<
2140 reqofs
<< " bytes (" << result
.length
<<
2142 debugs(88, 5, "clientReplyContext::sendMoreData:"
2143 << conn
->clientConnection
<<
2144 " '" << entry
->url() << "'" <<
2145 " out.offset=" << http
->out
.offset
);
2147 /* update size of the request */
2150 if (errorInStream(result
, reqofs
)) {
2151 sendStreamError(result
);
2155 if (flags
.headersSent
) {
2156 pushStreamData (result
, buf
);
2162 /* handle headers */
2164 if (Config
.onoff
.log_mime_hdrs
) {
2167 if ((k
= headersEnd(buf
, reqofs
))) {
2168 safe_free(http
->al
->headers
.reply
);
2169 http
->al
->headers
.reply
= (char *)xcalloc(k
+ 1, 1);
2170 xstrncpy(http
->al
->headers
.reply
, buf
, k
);
2174 holdingBuffer
= result
;
2175 processReplyAccess();
2179 /* Using this breaks the client layering just a little!
2182 clientReplyContext::createStoreEntry(const HttpRequestMethod
& m
, RequestFlags reqFlags
)
2184 assert(http
!= NULL
);
2186 * For erroneous requests, we might not have a h->request,
2187 * so make a fake one.
2190 if (http
->request
== NULL
) {
2191 http
->request
= new HttpRequest(m
, AnyP::PROTO_NONE
, null_string
);
2192 HTTPMSGLOCK(http
->request
);
2195 StoreEntry
*e
= storeCreateEntry(storeId(), http
->log_uri
, reqFlags
, m
);
2197 // Make entry collapsable ASAP, to increase collapsing chances for others,
2198 // TODO: every must-revalidate and similar request MUST reach the origin,
2199 // but do we have to prohibit others from collapsing on that request?
2200 if (Config
.onoff
.collapsed_forwarding
&& reqFlags
.cachable
&&
2201 !reqFlags
.needValidation
&&
2202 (m
== Http::METHOD_GET
|| m
== Http::METHOD_HEAD
)) {
2203 // make the entry available for future requests now
2204 Store::Root().allowCollapsing(e
, reqFlags
, m
);
2207 sc
= storeClientListAdd(e
, this);
2210 sc
->setDelayId(DelayId::DelayClient(http
));
2217 /* I don't think this is actually needed! -- adrian */
2218 /* http->reqbuf = http->norm_reqbuf; */
2219 // assert(http->reqbuf == http->norm_reqbuf);
2220 /* The next line is illegal because we don't know if the client stream
2221 * buffers have been set up
2223 // storeClientCopy(http->sc, e, 0, HTTP_REQBUF_SZ, http->reqbuf,
2224 // SendMoreData, this);
2225 /* So, we mark the store logic as complete */
2226 flags
.storelogiccomplete
= 1;
2228 /* and get the caller to request a read, from whereever they are */
2229 /* NOTE: after ANY data flows down the pipe, even one step,
2230 * this function CAN NOT be used to manage errors
2232 http
->storeEntry(e
);
2236 clientBuildError(err_type page_id
, Http::StatusCode status
, char const *url
,
2237 Ip::Address
&src_addr
, HttpRequest
* request
)
2239 ErrorState
*err
= new ErrorState(page_id
, status
, request
);
2240 err
->src_addr
= src_addr
;
2243 err
->url
= xstrdup(url
);