2 * DEBUG: section 12 Internet Cache Protocol (ICP)
3 * AUTHOR: Duane Wessels
5 * SQUID Web Proxy Cache http://www.squid-cache.org/
6 * ----------------------------------------------------------
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17 * This program is free software; you can redistribute it and/or modify
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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.
34 \defgroup ServerProtocolICPInternal2 ICPv2 Internals
35 \ingroup ServerProtocolICPAPI
39 #include "AccessLogEntry.h"
41 #include "acl/FilledChecklist.h"
42 #include "comm/Connection.h"
43 #include "HttpRequest.h"
44 #include "icmp/net_db.h"
46 #include "ip/Address.h"
48 #include "ipc/StartListening.h"
51 #include "SquidTime.h"
55 /// dials icpIncomingConnectionOpened call
56 class IcpListeningStartedDialer
: public CallDialer
,
57 public Ipc::StartListeningCb
60 typedef void (*Handler
)(int errNo
);
61 IcpListeningStartedDialer(Handler aHandler
):
64 virtual void print(std::ostream
&os
) const { startPrint(os
) << ')'; }
65 virtual bool canDial(AsyncCall
&) const { return true; }
66 virtual void dial(AsyncCall
&) { (handler
)(errNo
); }
72 static void icpIncomingConnectionOpened(int errNo
);
74 /// \ingroup ServerProtocolICPInternal2
75 static void icpLogIcp(const Ip::Address
&, log_type
, int, const char *, int);
77 /// \ingroup ServerProtocolICPInternal2
78 static void icpHandleIcpV2(int, Ip::Address
&, char *, int);
80 /// \ingroup ServerProtocolICPInternal2
81 static void icpCount(void *, int, size_t, int);
83 /// \ingroup ServerProtocolICPInternal2
84 static void icpGetOutgoingIpAddress();
87 \ingroup ServerProtocolICPInternal2
88 * IcpQueueHead is global so comm_incoming() knows whether or not
89 * to call icpUdpSendQueue.
91 static icpUdpData
*IcpQueueHead
= NULL
;
92 /// \ingroup ServerProtocolICPInternal2
93 static icpUdpData
*IcpQueueTail
= NULL
;
95 /// \ingroup ServerProtocolICPInternal2
96 Comm::ConnectionPointer icpIncomingConn
= NULL
;
97 /// \ingroup ServerProtocolICPInternal2
98 Comm::ConnectionPointer icpOutgoingConn
= NULL
;
100 /** \ingroup ServerProtocolICPInternal2
101 * ICP v2 uses the outgoing address as host ID.
102 * NP: this *may* be identical to icpOutgoingConn->local
103 * but when IN/OUT sockets are shared we can't guarantee that
104 * so a separate variable is used for now.
106 * We have one for private use (sent only by this local cache)
107 * and one for public use (for external caches to contact us)
109 Ip::Address theIcpPrivateHostID
;
111 /// \see theIcpPrivateHostID
112 Ip::Address theIcpPublicHostID
;
116 _icp_common_t::_icp_common_t() : opcode(ICP_INVALID
), version(0), length(0), reqnum(0), flags(0), pad(0), shostid(0)
119 _icp_common_t::_icp_common_t(char *buf
, unsigned int len
)
121 if (len
< sizeof(_icp_common_t
)) {
122 /* mark as invalid */
127 xmemcpy(this, buf
, sizeof(icp_common_t
));
129 * Convert network order sensitive fields
131 length
= ntohs(length
);
132 reqnum
= ntohl(reqnum
);
133 flags
= ntohl(flags
);
138 _icp_common_t::getOpCode() const
140 if (opcode
> (char)ICP_END
)
143 return (icp_opcode
)opcode
;
148 ICPState::ICPState(icp_common_t
&aHeader
, HttpRequest
*aRequest
):
150 request(HTTPMSGLOCK(aRequest
)),
155 ICPState::~ICPState()
158 HTTPMSGUNLOCK(request
);
166 /// \ingroup ServerProtocolICPInternal2
167 class ICP2State
: public ICPState
, public StoreClient
171 ICP2State(icp_common_t
& aHeader
, HttpRequest
*aRequest
):
172 ICPState(aHeader
, aRequest
),rtt(0),src_rtt(0),flags(0) {}
175 void created(StoreEntry
* newEntry
);
182 ICP2State::~ICP2State()
186 ICP2State::created(StoreEntry
*newEntry
)
188 StoreEntry
*entry
= newEntry
->isNull () ? NULL
: newEntry
;
189 debugs(12, 5, "icpHandleIcpV2: OPCODE " << icp_opcode_str
[header
.opcode
]);
190 icp_opcode codeToSend
;
192 if (icpCheckUdpHit(entry
, request
)) {
193 codeToSend
= ICP_HIT
;
196 if (Config
.onoff
.test_reachability
&& rtt
== 0) {
197 if ((rtt
= netdbHostRtt(request
->GetHost())) == 0)
198 netdbPingSite(request
->GetHost());
200 #endif /* USE_ICMP */
202 if (icpGetCommonOpcode() != ICP_ERR
)
203 codeToSend
= icpGetCommonOpcode();
204 else if (Config
.onoff
.test_reachability
&& rtt
== 0)
205 codeToSend
= ICP_MISS_NOFETCH
;
207 codeToSend
= ICP_MISS
;
210 icpCreateAndSend(codeToSend
, flags
, url
, header
.reqnum
, src_rtt
, fd
, from
);
216 /// \ingroup ServerProtocolICPInternal2
218 icpLogIcp(const Ip::Address
&caddr
, log_type logcode
, int len
, const char *url
, int delay
)
222 if (LOG_TAG_NONE
== logcode
)
225 if (LOG_ICP_QUERY
== logcode
)
228 clientdbUpdate(caddr
, logcode
, PROTO_ICP
, len
);
230 if (!Config
.onoff
.log_udp
)
233 al
.icp
.opcode
= ICP_QUERY
;
237 al
.cache
.caddr
= caddr
;
239 al
.cache
.replySize
= len
;
241 al
.cache
.code
= logcode
;
243 al
.cache
.msec
= delay
;
245 accessLogLog(&al
, NULL
);
248 /// \ingroup ServerProtocolICPInternal2
250 icpUdpSendQueue(int fd
, void *unused
)
254 while ((q
= IcpQueueHead
) != NULL
) {
255 int delay
= tvSubUsec(q
->queue_time
, current_time
);
256 /* increment delay to prevent looping */
257 const int x
= icpUdpSend(fd
, q
->address
, (icp_common_t
*) q
->msg
, q
->logcode
, ++delay
);
258 IcpQueueHead
= q
->next
;
267 _icp_common_t::createMessage(
275 icp_common_t
*headerp
= NULL
;
276 char *urloffset
= NULL
;
278 buf_len
= sizeof(icp_common_t
) + strlen(url
) + 1;
280 if (opcode
== ICP_QUERY
)
281 buf_len
+= sizeof(uint32_t);
283 buf
= (char *) xcalloc(buf_len
, 1);
285 headerp
= (icp_common_t
*) (void *) buf
;
287 headerp
->opcode
= (char) opcode
;
289 headerp
->version
= ICP_VERSION_CURRENT
;
291 headerp
->length
= (uint16_t) htons(buf_len
);
293 headerp
->reqnum
= htonl(reqnum
);
295 headerp
->flags
= htonl(flags
);
297 headerp
->pad
= htonl(pad
);
299 theIcpPrivateHostID
.GetInAddr( *((struct in_addr
*)&headerp
->shostid
) );
301 urloffset
= buf
+ sizeof(icp_common_t
);
303 if (opcode
== ICP_QUERY
)
304 urloffset
+= sizeof(uint32_t);
306 xmemcpy(urloffset
, url
, strlen(url
));
308 return (icp_common_t
*)buf
;
313 const Ip::Address
&to
,
321 len
= (int) ntohs(msg
->length
);
322 debugs(12, 5, "icpUdpSend: FD " << fd
<< " sending " <<
323 icp_opcode_str
[msg
->opcode
] << ", " << len
<< " bytes to " << to
);
325 x
= comm_udp_sendto(fd
, to
, msg
, len
);
328 /* successfully written */
329 icpLogIcp(to
, logcode
, len
, (char *) (msg
+ 1), delay
);
330 icpCount(msg
, SENT
, (size_t) len
, delay
);
332 } else if (0 == delay
) {
333 /* send failed, but queue it */
334 queue
= (icpUdpData
*) xcalloc(1, sizeof(icpUdpData
));
337 queue
->len
= (int) ntohs(msg
->length
);
338 queue
->queue_time
= current_time
;
339 queue
->logcode
= logcode
;
341 if (IcpQueueHead
== NULL
) {
342 IcpQueueHead
= queue
;
343 IcpQueueTail
= queue
;
344 } else if (IcpQueueTail
== IcpQueueHead
) {
345 IcpQueueTail
= queue
;
346 IcpQueueHead
->next
= queue
;
348 IcpQueueTail
->next
= queue
;
349 IcpQueueTail
= queue
;
352 commSetSelect(fd
, COMM_SELECT_WRITE
, icpUdpSendQueue
, NULL
, 0);
353 statCounter
.icp
.replies_queued
++;
356 statCounter
.icp
.replies_dropped
++;
363 icpCheckUdpHit(StoreEntry
* e
, HttpRequest
* request
)
368 if (!e
->validToSend())
371 if (Config
.onoff
.icp_hit_stale
)
374 if (refreshCheckICP(e
, request
))
381 * This routine selects an ICP opcode for ICP misses.
383 \retval ICP_ERR no opcode selected here
384 \retval ICP_MISS_NOFETCH store is rebuilding, no fetch is possible yet
389 /* if store is rebuilding, return a UDP_MISS_NOFETCH */
391 if ((StoreController::store_dirs_rebuilding
&& opt_reload_hit_only
) ||
392 hit_only_mode_until
> squid_curtime
) {
393 return ICP_MISS_NOFETCH
;
400 icpLogFromICPCode(icp_opcode opcode
)
402 if (opcode
== ICP_ERR
)
403 return LOG_UDP_INVALID
;
405 if (opcode
== ICP_DENIED
)
406 return LOG_UDP_DENIED
;
408 if (opcode
== ICP_HIT
)
411 if (opcode
== ICP_MISS
)
414 if (opcode
== ICP_MISS_NOFETCH
)
415 return LOG_UDP_MISS_NOFETCH
;
417 fatal("expected ICP opcode\n");
419 return LOG_UDP_INVALID
;
423 icpCreateAndSend(icp_opcode opcode
, int flags
, char const *url
, int reqnum
, int pad
, int fd
, const Ip::Address
&from
)
425 icp_common_t
*reply
= _icp_common_t::createMessage(opcode
, flags
, url
, reqnum
, pad
);
426 icpUdpSend(fd
, from
, reply
, icpLogFromICPCode(opcode
), 0);
430 icpDenyAccess(Ip::Address
&from
, char *url
, int reqnum
, int fd
)
432 debugs(12, 2, "icpDenyAccess: Access Denied for " << from
<< " by " << AclMatchedName
<< ".");
434 if (clientdbCutoffDenied(from
)) {
436 * count this DENIED query in the clientdb, even though
437 * we're not sending an ICP reply...
439 clientdbUpdate(from
, LOG_UDP_DENIED
, PROTO_ICP
, 0);
441 icpCreateAndSend(ICP_DENIED
, 0, url
, reqnum
, 0, fd
, from
);
446 icpAccessAllowed(Ip::Address
&from
, HttpRequest
* icp_request
)
448 /* absent an explicit allow, we deny all */
449 if (!Config
.accessList
.icp
)
452 ACLFilledChecklist
checklist(Config
.accessList
.icp
, icp_request
, NULL
);
453 checklist
.src_addr
= from
;
454 checklist
.my_addr
.SetNoAddr();
455 int result
= checklist
.fastCheck();
460 icpGetUrlToSend(char *url
)
462 if (strpbrk(url
, w_space
))
463 return rfc1738_escape(url
);
469 icpGetRequest(char *url
, int reqnum
, int fd
, Ip::Address
&from
)
471 if (strpbrk(url
, w_space
)) {
472 url
= rfc1738_escape(url
);
473 icpCreateAndSend(ICP_ERR
, 0, rfc1738_escape(url
), reqnum
, 0, fd
, from
);
479 if ((result
= HttpRequest::CreateFromUrl(url
)) == NULL
)
480 icpCreateAndSend(ICP_ERR
, 0, url
, reqnum
, 0, fd
, from
);
487 doV2Query(int fd
, Ip::Address
&from
, char *buf
, icp_common_t header
)
492 /* We have a valid packet */
493 char *url
= buf
+ sizeof(icp_common_t
) + sizeof(uint32_t);
494 HttpRequest
*icp_request
= icpGetRequest(url
, header
.reqnum
, fd
, from
);
499 HTTPMSGLOCK(icp_request
);
501 if (!icpAccessAllowed(from
, icp_request
)) {
502 icpDenyAccess(from
, url
, header
.reqnum
, fd
);
503 HTTPMSGUNLOCK(icp_request
);
507 if (header
.flags
& ICP_FLAG_SRC_RTT
) {
508 rtt
= netdbHostRtt(icp_request
->GetHost());
509 int hops
= netdbHostHops(icp_request
->GetHost());
510 src_rtt
= ((hops
& 0xFFFF) << 16) | (rtt
& 0xFFFF);
513 flags
|= ICP_FLAG_SRC_RTT
;
515 #endif /* USE_ICMP */
517 /* The peer is allowed to use this cache */
518 ICP2State
*state
= new ICP2State (header
, icp_request
);
524 state
->url
= xstrdup (url
);
526 state
->flags
= flags
;
530 state
->src_rtt
= src_rtt
;
532 StoreEntry::getPublic (state
, url
, METHOD_GET
);
534 HTTPMSGUNLOCK(icp_request
);
538 _icp_common_t::handleReply(char *buf
, Ip::Address
&from
)
540 if (neighbors_do_private_keys
&& reqnum
== 0) {
541 debugs(12, 0, "icpHandleIcpV2: Neighbor " << from
<< " returned reqnum = 0");
542 debugs(12, 0, "icpHandleIcpV2: Disabling use of private keys");
543 neighbors_do_private_keys
= 0;
546 char *url
= buf
+ sizeof(icp_common_t
);
547 debugs(12, 3, "icpHandleIcpV2: " << icp_opcode_str
[opcode
] << " from " << from
<< " for '" << url
<< "'");
549 const cache_key
*key
= icpGetCacheKey(url
, (int) reqnum
);
550 /* call neighborsUdpAck even if ping_status != PING_WAITING */
551 neighborsUdpAck(key
, this, from
);
555 icpHandleIcpV2(int fd
, Ip::Address
&from
, char *buf
, int len
)
558 debugs(12, 3, "icpHandleIcpV2: ICP message is too small");
562 icp_common_t
header(buf
, len
);
564 * Length field should match the number of bytes read
567 if (len
!= header
.length
) {
568 debugs(12, 3, "icpHandleIcpV2: ICP message is too small");
572 switch (header
.opcode
) {
575 /* We have a valid packet */
576 doV2Query(fd
, from
, buf
, header
);
587 case ICP_MISS_NOFETCH
:
588 header
.handleReply(buf
, from
);
597 debugs(12, 0, "icpHandleIcpV2: UNKNOWN OPCODE: " << header
.opcode
<< " from " << from
);
605 icpPktDump(icp_common_t
* pkt
)
609 debugs(12, 9, "opcode: " << std::setw(3) << pkt
->opcode
<< " " << icp_opcode_str
[pkt
->opcode
]);
610 debugs(12, 9, "version: "<< std::left
<< std::setw(8) << pkt
->version
);
611 debugs(12, 9, "length: "<< std::left
<< std::setw(8) << ntohs(pkt
->length
));
612 debugs(12, 9, "reqnum: "<< std::left
<< std::setw(8) << ntohl(pkt
->reqnum
));
613 debugs(12, 9, "flags: "<< std::left
<< std::hex
<< std::setw(8) << ntohl(pkt
->flags
));
614 a
= (struct in_addr
)pkt
->shostid
;
615 debugs(12, 9, "shostid: " << a
);
616 debugs(12, 9, "payload: " << (char *) pkt
+ sizeof(icp_common_t
));
622 icpHandleUdp(int sock
, void *data
)
624 int *N
= &incoming_sockets_accepted
;
627 LOCAL_ARRAY(char, buf
, SQUID_UDP_SO_RCVBUF
);
630 int max
= INCOMING_ICP_MAX
;
631 commSetSelect(sock
, COMM_SELECT_READ
, icpHandleUdp
, NULL
, 0);
634 len
= comm_udp_recvfrom(sock
,
636 SQUID_UDP_SO_RCVBUF
- 1,
644 if (ignoreErrno(errno
))
648 /* Some Linux systems seem to set the FD for reading and then
649 * return ECONNREFUSED when sendto() fails and generates an ICMP
650 * port unreachable message. */
651 /* or maybe an EHOSTUNREACH "No route to host" message */
652 if (errno
!= ECONNREFUSED
&& errno
!= EHOSTUNREACH
)
655 debugs(50, 1, "icpHandleUdp: FD " << sock
<< " recvfrom: " << xstrerror());
661 icpCount(buf
, RECV
, (size_t) len
, 0);
663 debugs(12, 4, "icpHandleUdp: FD " << sock
<< ": received " <<
664 (unsigned long int)len
<< " bytes from " << from
);
666 #ifdef ICP_PACKET_DUMP
671 if ((size_t) len
< sizeof(icp_common_t
)) {
672 debugs(12, 4, "icpHandleUdp: Ignoring too-small UDP packet");
676 icp_version
= (int) buf
[1]; /* cheat! */
678 if (icp_version
== ICP_VERSION_2
)
679 icpHandleIcpV2(sock
, from
, buf
, len
);
680 else if (icp_version
== ICP_VERSION_3
)
681 icpHandleIcpV3(sock
, from
, buf
, len
);
683 debugs(12, 1, "WARNING: Unused ICP version " << icp_version
<<
684 " received from " << from
);
689 icpConnectionsOpen(void)
693 if ((port
= Config
.Port
.icp
) <= 0)
696 icpIncomingConn
= new Comm::Connection
;
697 icpIncomingConn
->local
= Config
.Addrs
.udp_incoming
;
698 icpIncomingConn
->local
.SetPort(port
);
700 if (!Ip::EnableIpv6
&& !icpIncomingConn
->local
.SetIPv4()) {
701 debugs(12, DBG_CRITICAL
, "ERROR: IPv6 is disabled. " << icpIncomingConn
->local
<< " is not an IPv4 address.");
702 fatal("ICP port cannot be opened.");
704 /* split-stack for now requires default IPv4-only ICP */
705 if (Ip::EnableIpv6
&IPV6_SPECIAL_SPLITSTACK
&& icpIncomingConn
->local
.IsAnyAddr()) {
706 icpIncomingConn
->local
.SetIPv4();
709 AsyncCall::Pointer call
= asyncCall(12, 2,
710 "icpIncomingConnectionOpened",
711 IcpListeningStartedDialer(&icpIncomingConnectionOpened
));
713 Ipc::StartListening(SOCK_DGRAM
,
716 Ipc::fdnInIcpSocket
, call
, Subscription::Pointer());
718 if ( !Config
.Addrs
.udp_outgoing
.IsNoAddr() ) {
719 icpOutgoingConn
= new Comm::Connection
;
720 icpOutgoingConn
->local
= Config
.Addrs
.udp_outgoing
;
721 icpOutgoingConn
->local
.SetPort(port
);
723 if (!Ip::EnableIpv6
&& !icpOutgoingConn
->local
.SetIPv4()) {
724 debugs(49, DBG_CRITICAL
, "ERROR: IPv6 is disabled. " << icpOutgoingConn
->local
<< " is not an IPv4 address.");
725 fatal("ICP port cannot be opened.");
727 /* split-stack for now requires default IPv4-only ICP */
728 if (Ip::EnableIpv6
&IPV6_SPECIAL_SPLITSTACK
&& icpOutgoingConn
->local
.IsAnyAddr()) {
729 icpOutgoingConn
->local
.SetIPv4();
733 comm_open_listener(SOCK_DGRAM
, IPPROTO_UDP
, icpOutgoingConn
, "Outgoing ICP Port");
736 if (!Comm::IsConnOpen(icpOutgoingConn
))
737 fatal("Cannot open Outgoing ICP Port");
739 debugs(12, DBG_CRITICAL
, "Sending ICP messages from " << icpOutgoingConn
->local
);
741 commSetSelect(icpOutgoingConn
->fd
, COMM_SELECT_READ
, icpHandleUdp
, NULL
, 0);
742 fd_note(icpOutgoingConn
->fd
, "Outgoing ICP socket");
743 icpGetOutgoingIpAddress();
747 // Ensure that we have the IP address(es) to use for Host ID.
748 // The outgoing address is used as 'private' host ID used only on packets we send
750 icpGetOutgoingIpAddress()
752 struct addrinfo
*xai
= NULL
;
753 theIcpPrivateHostID
.SetEmpty();
754 theIcpPrivateHostID
.InitAddrInfo(xai
);
755 if (getsockname(icpOutgoingConn
->fd
, xai
->ai_addr
, &xai
->ai_addrlen
) < 0)
756 debugs(50, DBG_IMPORTANT
, "ERROR: Unable to identify ICP host ID to use for " << icpOutgoingConn
757 << ": getsockname: " << xstrerror());
759 theIcpPrivateHostID
= *xai
;
760 theIcpPrivateHostID
.FreeAddrInfo(xai
);
764 icpIncomingConnectionOpened(int errNo
)
766 if (!Comm::IsConnOpen(icpIncomingConn
))
767 fatal("Cannot open ICP Port");
769 commSetSelect(icpIncomingConn
->fd
, COMM_SELECT_READ
, icpHandleUdp
, NULL
, 0);
771 for (const wordlist
*s
= Config
.mcast_group_list
; s
; s
= s
->next
)
772 ipcache_nbgethostbyname(s
->key
, mcastJoinGroups
, NULL
); // XXX: pass the icpIncomingConn for mcastJoinGroups usage.
774 debugs(12, DBG_IMPORTANT
, "Accepting ICP messages on " << icpIncomingConn
->local
);
776 fd_note(icpIncomingConn
->fd
, "Incoming ICP port");
778 if (Config
.Addrs
.udp_outgoing
.IsNoAddr()) {
779 icpOutgoingConn
= icpIncomingConn
;
780 debugs(12, DBG_IMPORTANT
, "Sending ICP messages from " << icpOutgoingConn
->local
);
781 icpGetOutgoingIpAddress();
784 // Ensure that we have the IP address(es) to use for Host ID.
785 // The listening address is used as 'public' host ID which can be used to contact us
786 struct addrinfo
*xai
= NULL
;
787 theIcpPublicHostID
.InitAddrInfo(xai
); // reset xai
788 if (getsockname(icpIncomingConn
->fd
, xai
->ai_addr
, &xai
->ai_addrlen
) < 0)
789 debugs(50, DBG_IMPORTANT
, "ERROR: Unable to identify ICP host ID to use for " << icpIncomingConn
790 << ": getsockname: " << xstrerror());
792 theIcpPublicHostID
= *xai
;
793 theIcpPublicHostID
.FreeAddrInfo(xai
);
797 * icpConnectionShutdown only closes the 'in' socket if it is
798 * different than the 'out' socket.
801 icpConnectionShutdown(void)
803 if (!Comm::IsConnOpen(icpIncomingConn
))
806 debugs(12, DBG_IMPORTANT
, "Stop receiving ICP on " << icpIncomingConn
->local
);
808 /** Release the 'in' socket for lazy closure.
809 * in and out sockets may be sharing one same FD.
810 * This prevents this function from executing repeatedly.
812 icpIncomingConn
= NULL
;
815 * Normally we only write to the outgoing ICP socket, but
816 * we also have a read handler there to catch messages sent
817 * to that specific interface. During shutdown, we must
818 * disable reading on the outgoing socket.
820 assert(Comm::IsConnOpen(icpOutgoingConn
));
822 commSetSelect(icpOutgoingConn
->fd
, COMM_SELECT_READ
, NULL
, NULL
, 0);
826 icpConnectionClose(void)
828 icpConnectionShutdown();
830 if (icpOutgoingConn
!= NULL
) {
831 debugs(12, DBG_IMPORTANT
, "Stop sending ICP from " << icpOutgoingConn
->local
);
832 icpOutgoingConn
= NULL
;
837 icpCount(void *buf
, int which
, size_t len
, int delay
)
839 icp_common_t
*icp
= (icp_common_t
*) buf
;
841 if (len
< sizeof(*icp
))
845 statCounter
.icp
.pkts_sent
++;
846 kb_incr(&statCounter
.icp
.kbytes_sent
, len
);
848 if (ICP_QUERY
== icp
->opcode
) {
849 statCounter
.icp
.queries_sent
++;
850 kb_incr(&statCounter
.icp
.q_kbytes_sent
, len
);
852 statCounter
.icp
.replies_sent
++;
853 kb_incr(&statCounter
.icp
.r_kbytes_sent
, len
);
854 /* this is the sent-reply service time */
855 statHistCount(&statCounter
.icp
.reply_svc_time
, delay
);
858 if (ICP_HIT
== icp
->opcode
)
859 statCounter
.icp
.hits_sent
++;
860 } else if (RECV
== which
) {
861 statCounter
.icp
.pkts_recv
++;
862 kb_incr(&statCounter
.icp
.kbytes_recv
, len
);
864 if (ICP_QUERY
== icp
->opcode
) {
865 statCounter
.icp
.queries_recv
++;
866 kb_incr(&statCounter
.icp
.q_kbytes_recv
, len
);
868 statCounter
.icp
.replies_recv
++;
869 kb_incr(&statCounter
.icp
.r_kbytes_recv
, len
);
870 /* statCounter.icp.query_svc_time set in clientUpdateCounters */
873 if (ICP_HIT
== icp
->opcode
)
874 statCounter
.icp
.hits_recv
++;
878 #define N_QUERIED_KEYS 8192
879 #define N_QUERIED_KEYS_MASK 8191
880 static cache_key queried_keys
[N_QUERIED_KEYS
][SQUID_MD5_DIGEST_LENGTH
];
883 icpSetCacheKey(const cache_key
* key
)
885 static int reqnum
= 0;
890 storeKeyCopy(queried_keys
[reqnum
& N_QUERIED_KEYS_MASK
], key
);
896 icpGetCacheKey(const char *url
, int reqnum
)
898 if (neighbors_do_private_keys
&& reqnum
)
899 return queried_keys
[reqnum
& N_QUERIED_KEYS_MASK
];
901 return storeKeyPublic(url
, METHOD_GET
);