]>
Commit | Line | Data |
---|---|---|
30a4f2a8 | 1 | /* |
ef57eb7b | 2 | * Copyright (C) 1996-2016 The Squid Software Foundation and contributors |
e25c139f | 3 | * |
bbc27441 AJ |
4 | * Squid software is distributed under GPLv2+ license and includes |
5 | * contributions from numerous individuals and organizations. | |
6 | * Please see the COPYING and CONTRIBUTORS files for details. | |
019dd986 | 7 | */ |
090089c4 | 8 | |
bbc27441 AJ |
9 | /* DEBUG: section 15 Neighbor Routines */ |
10 | ||
582c2af2 | 11 | #include "squid.h" |
c0941a6a | 12 | #include "acl/FilledChecklist.h" |
65d448bc | 13 | #include "anyp/PortCfg.h" |
2fefc43c | 14 | #include "base/EnumIterator.h" |
b814e8d4 | 15 | #include "CacheDigest.h" |
a011edee | 16 | #include "CachePeer.h" |
55cbb02b | 17 | #include "comm/Connection.h" |
aed188fd | 18 | #include "comm/ConnOpener.h" |
a553a5a3 | 19 | #include "event.h" |
eb13c21e | 20 | #include "FwdState.h" |
582c2af2 | 21 | #include "globals.h" |
aa839030 | 22 | #include "htcp.h" |
528b2c61 | 23 | #include "HttpRequest.h" |
582c2af2 | 24 | #include "icmp/net_db.h" |
aa839030 | 25 | #include "ICP.h" |
f9b6ff6e | 26 | #include "int.h" |
582c2af2 | 27 | #include "ip/Address.h" |
b283ea3f | 28 | #include "ip/tools.h" |
714e68b7 | 29 | #include "ipcache.h" |
528b2c61 | 30 | #include "MemObject.h" |
582c2af2 | 31 | #include "mgr/Registration.h" |
afabcc13 | 32 | #include "multicast.h" |
f0ba2534 | 33 | #include "neighbors.h" |
602d9612 | 34 | #include "NeighborTypeDomainList.h" |
e8dca475 | 35 | #include "pconn.h" |
aa839030 | 36 | #include "PeerDigest.h" |
e8dca475 | 37 | #include "PeerPoolMgr.h" |
b24880fe | 38 | #include "PeerSelectState.h" |
f206b652 | 39 | #include "RequestFlags.h" |
4d5904f7 | 40 | #include "SquidConfig.h" |
a98bcbee | 41 | #include "SquidMath.h" |
985c86bc | 42 | #include "SquidTime.h" |
6ea5959e | 43 | #include "stat.h" |
aa839030 | 44 | #include "Store.h" |
fb548aaf | 45 | #include "store_key_md5.h" |
8d03bdb4 | 46 | #include "tools.h" |
b1bd952a | 47 | #include "URL.h" |
090089c4 | 48 | |
429fdbec | 49 | /* count mcast group peers every 15 minutes */ |
50 | #define MCAST_COUNT_RATE 900 | |
51 | ||
a3c6762c FC |
52 | bool peerAllowedToUse(const CachePeer *, HttpRequest *); |
53 | static int peerWouldBePinged(const CachePeer *, HttpRequest *); | |
54 | static void neighborRemove(CachePeer *); | |
55 | static void neighborAlive(CachePeer *, const MemObject *, const icp_common_t *); | |
399cabec | 56 | #if USE_HTCP |
fad2588a | 57 | static void neighborAliveHtcp(CachePeer *, const MemObject *, const HtcpReplyData *); |
399cabec | 58 | #endif |
a3c6762c | 59 | static void neighborCountIgnored(CachePeer *); |
f5b8bbc4 | 60 | static void peerRefreshDNS(void *); |
b69f7771 | 61 | static IPH peerDNSConfigure; |
a3c6762c | 62 | static bool peerProbeConnect(CachePeer *); |
eb406bb7 | 63 | static CNCB peerProbeConnectDone; |
f5b8bbc4 | 64 | static void peerCountMcastPeersDone(void *data); |
65 | static void peerCountMcastPeersStart(void *data); | |
a3c6762c | 66 | static void peerCountMcastPeersSchedule(CachePeer * p, time_t when); |
b3264694 | 67 | static IRCB peerCountHandleIcpReply; |
62e76326 | 68 | |
b7ac5457 | 69 | static void neighborIgnoreNonPeer(const Ip::Address &, icp_opcode); |
ed7f5615 | 70 | static OBJH neighborDumpPeers; |
71 | static OBJH neighborDumpNonPeers; | |
a3c6762c | 72 | static void dump_peers(StoreEntry * sentry, CachePeer * peers); |
090089c4 | 73 | |
f45dd259 | 74 | static unsigned short echo_port; |
30a4f2a8 | 75 | |
c7a3724d | 76 | static int NLateReplies = 0; |
a3c6762c | 77 | static CachePeer *first_ping = NULL; |
28070024 | 78 | |
a2c963ae | 79 | const char * |
a3c6762c | 80 | neighborTypeStr(const CachePeer * p) |
69a71bd7 | 81 | { |
e102ebda | 82 | if (p->type == PEER_NONE) |
62e76326 | 83 | return "Non-Peer"; |
84 | ||
b69f7771 | 85 | if (p->type == PEER_SIBLING) |
62e76326 | 86 | return "Sibling"; |
87 | ||
b69f7771 | 88 | if (p->type == PEER_MULTICAST) |
62e76326 | 89 | return "Multicast Group"; |
90 | ||
69a71bd7 | 91 | return "Parent"; |
92 | } | |
93 | ||
a3c6762c | 94 | CachePeer * |
b7ac5457 | 95 | whichPeer(const Ip::Address &from) |
090089c4 | 96 | { |
22e4fa85 | 97 | int j; |
62e76326 | 98 | |
a3c6762c | 99 | CachePeer *p = NULL; |
cc192b50 | 100 | debugs(15, 3, "whichPeer: from " << from); |
62e76326 | 101 | |
26ac0430 | 102 | for (p = Config.peers; p; p = p->next) { |
5db6bf73 | 103 | for (j = 0; j < p->n_addresses; ++j) { |
4dd643d5 | 104 | if (from == p->addresses[j] && from.port() == p->icp.port) { |
62e76326 | 105 | return p; |
106 | } | |
107 | } | |
090089c4 | 108 | } |
62e76326 | 109 | |
4eda6afe | 110 | return NULL; |
090089c4 | 111 | } |
112 | ||
701a8572 | 113 | peer_t |
5c51bffb | 114 | neighborType(const CachePeer * p, const URL &url) |
24a1003d | 115 | { |
62e76326 | 116 | |
5844d003 | 117 | const NeighborTypeDomainList *d = NULL; |
62e76326 | 118 | |
b69f7771 | 119 | for (d = p->typelist; d; d = d->next) { |
5c51bffb | 120 | if (0 == matchDomainName(url.host(), d->domain)) |
62e76326 | 121 | if (d->type != PEER_NONE) |
122 | return d->type; | |
24a1003d | 123 | } |
8a368316 AJ |
124 | #if PEER_MULTICAST_SIBLINGS |
125 | if (p->type == PEER_MULTICAST) | |
126 | if (p->options.mcast_siblings) | |
127 | return PEER_SIBLING; | |
128 | #endif | |
62e76326 | 129 | |
b69f7771 | 130 | return p->type; |
24a1003d | 131 | } |
132 | ||
2efeb0b7 AJ |
133 | /** |
134 | * \return Whether it is appropriate to fetch REQUEST from PEER. | |
7b3bd12c | 135 | */ |
2efeb0b7 | 136 | bool |
a3c6762c | 137 | peerAllowedToUse(const CachePeer * p, HttpRequest * request) |
090089c4 | 138 | { |
62e76326 | 139 | |
ce66013b | 140 | assert(request != NULL); |
62e76326 | 141 | |
5c51bffb | 142 | if (neighborType(p, request->url) == PEER_SIBLING) { |
8a368316 AJ |
143 | #if PEER_MULTICAST_SIBLINGS |
144 | if (p->type == PEER_MULTICAST && p->options.mcast_siblings && | |
450fe1cb | 145 | (request->flags.noCache || request->flags.refresh || request->flags.loopDetected || request->flags.needValidation)) |
5c51bffb | 146 | debugs(15, 2, "peerAllowedToUse(" << p->name << ", " << request->url.authority() << ") : multicast-siblings optimization match"); |
8a368316 | 147 | #endif |
450fe1cb | 148 | if (request->flags.noCache) |
2efeb0b7 | 149 | return false; |
62e76326 | 150 | |
45e5102d | 151 | if (request->flags.refresh) |
2efeb0b7 | 152 | return false; |
62e76326 | 153 | |
450fe1cb | 154 | if (request->flags.loopDetected) |
2efeb0b7 | 155 | return false; |
62e76326 | 156 | |
450fe1cb | 157 | if (request->flags.needValidation) |
2efeb0b7 | 158 | return false; |
9689d97c | 159 | } |
62e76326 | 160 | |
ad46590b | 161 | // CONNECT requests are proxy requests. Not to be forwarded to origin servers. |
a3c6762c | 162 | // Unless the destination port matches, in which case we MAY perform a 'DIRECT' to this CachePeer. |
d9a7bc71 | 163 | if (p->options.originserver && request->method == Http::METHOD_CONNECT && request->url.port() != p->http_port) |
2efeb0b7 | 164 | return false; |
ad46590b | 165 | |
505e35db | 166 | if (p->access == NULL) |
f1a5d071 | 167 | return true; |
62e76326 | 168 | |
c0941a6a | 169 | ACLFilledChecklist checklist(p->access, request, NULL); |
62e76326 | 170 | |
2efeb0b7 | 171 | return (checklist.fastCheck() == ACCESS_ALLOWED); |
090089c4 | 172 | } |
173 | ||
a3c6762c | 174 | /* Return TRUE if it is okay to send an ICP request to this CachePeer. */ |
62fd6124 | 175 | static int |
a3c6762c | 176 | peerWouldBePinged(const CachePeer * p, HttpRequest * request) |
62fd6124 | 177 | { |
6315602c | 178 | if (p->icp.port == 0) |
62e76326 | 179 | return 0; |
180 | ||
cd196bc8 | 181 | if (p->options.no_query) |
62e76326 | 182 | return 0; |
183 | ||
cd196bc8 | 184 | if (p->options.mcast_responder) |
62e76326 | 185 | return 0; |
186 | ||
83b381d5 | 187 | if (p->n_addresses == 0) |
62e76326 | 188 | return 0; |
189 | ||
6315602c | 190 | if (p->options.background_ping && (squid_curtime - p->stats.last_query < Config.backgroundPingRate)) |
62e76326 | 191 | return 0; |
192 | ||
62fd6124 | 193 | /* the case below seems strange, but can happen if the |
194 | * URL host is on the other side of a firewall */ | |
b69f7771 | 195 | if (p->type == PEER_SIBLING) |
45e5102d | 196 | if (!request->flags.hierarchical) |
62e76326 | 197 | return 0; |
198 | ||
6315602c JGD |
199 | if (!peerAllowedToUse(p, request)) |
200 | return 0; | |
201 | ||
83b381d5 | 202 | /* Ping dead peers every timeout interval */ |
203 | if (squid_curtime - p->stats.last_query > Config.Timeout.deadPeer) | |
62e76326 | 204 | return 1; |
205 | ||
5537c535 | 206 | if (!neighborUp(p)) |
207 | return 0; | |
62e76326 | 208 | |
62fd6124 | 209 | return 1; |
210 | } | |
211 | ||
e8dca475 CT |
212 | bool |
213 | peerCanOpenMore(const CachePeer *p) | |
214 | { | |
215 | const int effectiveLimit = p->max_conn <= 0 ? Squid_MaxFD : p->max_conn; | |
216 | const int remaining = effectiveLimit - p->stats.conn_open; | |
217 | debugs(15, 7, remaining << '=' << effectiveLimit << '-' << p->stats.conn_open); | |
218 | return remaining > 0; | |
219 | } | |
220 | ||
221 | bool | |
222 | peerHasConnAvailable(const CachePeer *p) | |
223 | { | |
224 | // Standby connections can be used without opening new connections. | |
225 | const int standbys = p->standby.pool ? p->standby.pool->count() : 0; | |
226 | ||
227 | // XXX: Some idle pconns can be used without opening new connections. | |
228 | // Complication: Idle pconns cannot be reused for some requests. | |
229 | const int usableIdles = 0; | |
230 | ||
231 | const int available = standbys + usableIdles; | |
232 | debugs(15, 7, available << '=' << standbys << '+' << usableIdles); | |
233 | return available > 0; | |
234 | } | |
235 | ||
236 | void | |
237 | peerConnClosed(CachePeer *p) | |
238 | { | |
239 | --p->stats.conn_open; | |
240 | if (p->standby.waitingForClose && peerCanOpenMore(p)) { | |
241 | p->standby.waitingForClose = false; | |
242 | PeerPoolMgr::Checkpoint(p->standby.mgr, "conn closed"); | |
243 | } | |
244 | } | |
245 | ||
a3c6762c | 246 | /* Return TRUE if it is okay to send an HTTP request to this CachePeer. */ |
8ff4505b | 247 | int |
a3c6762c | 248 | peerHTTPOkay(const CachePeer * p, HttpRequest * request) |
62fd6124 | 249 | { |
e8dca475 CT |
250 | if (!peerCanOpenMore(p) && !peerHasConnAvailable(p)) |
251 | return 0; | |
6315602c | 252 | |
b69f7771 | 253 | if (!peerAllowedToUse(p, request)) |
62e76326 | 254 | return 0; |
255 | ||
b69f7771 | 256 | if (!neighborUp(p)) |
62e76326 | 257 | return 0; |
258 | ||
62fd6124 | 259 | return 1; |
260 | } | |
261 | ||
3c6e634f | 262 | int |
190154cf | 263 | neighborsCount(HttpRequest * request) |
090089c4 | 264 | { |
a3c6762c | 265 | CachePeer *p = NULL; |
090089c4 | 266 | int count = 0; |
62e76326 | 267 | |
40a1495e | 268 | for (p = Config.peers; p; p = p->next) |
62e76326 | 269 | if (peerWouldBePinged(p, request)) |
5db6bf73 | 270 | ++count; |
62e76326 | 271 | |
bf8fe701 | 272 | debugs(15, 3, "neighborsCount: " << count); |
62e76326 | 273 | |
3c6e634f | 274 | return count; |
275 | } | |
090089c4 | 276 | |
a3c6762c | 277 | CachePeer * |
190154cf | 278 | getFirstUpParent(HttpRequest * request) |
090089c4 | 279 | { |
a3c6762c | 280 | CachePeer *p = NULL; |
62e76326 | 281 | |
40a1495e | 282 | for (p = Config.peers; p; p = p->next) { |
62e76326 | 283 | if (!neighborUp(p)) |
284 | continue; | |
285 | ||
5c51bffb | 286 | if (neighborType(p, request->url) != PEER_PARENT) |
62e76326 | 287 | continue; |
288 | ||
289 | if (!peerHTTPOkay(p, request)) | |
290 | continue; | |
291 | ||
292 | break; | |
090089c4 | 293 | } |
62e76326 | 294 | |
bf8fe701 | 295 | debugs(15, 3, "getFirstUpParent: returning " << (p ? p->host : "NULL")); |
b69f7771 | 296 | return p; |
090089c4 | 297 | } |
298 | ||
a3c6762c | 299 | CachePeer * |
190154cf | 300 | getRoundRobinParent(HttpRequest * request) |
48b38d01 | 301 | { |
a3c6762c FC |
302 | CachePeer *p; |
303 | CachePeer *q = NULL; | |
62e76326 | 304 | |
40a1495e | 305 | for (p = Config.peers; p; p = p->next) { |
62e76326 | 306 | if (!p->options.roundrobin) |
307 | continue; | |
308 | ||
5c51bffb | 309 | if (neighborType(p, request->url) != PEER_PARENT) |
62e76326 | 310 | continue; |
311 | ||
312 | if (!peerHTTPOkay(p, request)) | |
313 | continue; | |
314 | ||
1d0bef67 | 315 | if (p->weight == 0) |
0d5a2006 | 316 | continue; |
1d0bef67 AJ |
317 | |
318 | if (q) { | |
319 | if (p->weight == q->weight) { | |
320 | if (q->rr_count < p->rr_count) | |
321 | continue; | |
2d3d0b4e | 322 | } else if ( ((double) q->rr_count / q->weight) < ((double) p->rr_count / p->weight)) { |
1d0bef67 AJ |
323 | continue; |
324 | } | |
0d5a2006 | 325 | } |
62e76326 | 326 | |
327 | q = p; | |
48b38d01 | 328 | } |
62e76326 | 329 | |
b69f7771 | 330 | if (q) |
5db6bf73 | 331 | ++ q->rr_count; |
62e76326 | 332 | |
1d0bef67 | 333 | debugs(15, 3, HERE << "returning " << (q ? q->host : "NULL")); |
62e76326 | 334 | |
b69f7771 | 335 | return q; |
48b38d01 | 336 | } |
337 | ||
a3c6762c | 338 | CachePeer * |
190154cf | 339 | getWeightedRoundRobinParent(HttpRequest * request) |
d1b63fc8 | 340 | { |
a3c6762c FC |
341 | CachePeer *p; |
342 | CachePeer *q = NULL; | |
d1b63fc8 | 343 | int weighted_rtt; |
62e76326 | 344 | |
d1b63fc8 | 345 | for (p = Config.peers; p; p = p->next) { |
62e76326 | 346 | if (!p->options.weighted_roundrobin) |
347 | continue; | |
348 | ||
5c51bffb | 349 | if (neighborType(p, request->url) != PEER_PARENT) |
62e76326 | 350 | continue; |
351 | ||
352 | if (!peerHTTPOkay(p, request)) | |
353 | continue; | |
354 | ||
355 | if (q && q->rr_count < p->rr_count) | |
356 | continue; | |
357 | ||
358 | q = p; | |
d1b63fc8 | 359 | } |
62e76326 | 360 | |
d1b63fc8 | 361 | if (q && q->rr_count > 1000000) |
62e76326 | 362 | for (p = Config.peers; p; p = p->next) { |
363 | if (!p->options.weighted_roundrobin) | |
364 | continue; | |
365 | ||
5c51bffb | 366 | if (neighborType(p, request->url) != PEER_PARENT) |
62e76326 | 367 | continue; |
368 | ||
369 | p->rr_count = 0; | |
370 | } | |
371 | ||
d1b63fc8 | 372 | if (q) { |
62e76326 | 373 | weighted_rtt = (q->stats.rtt - q->basetime) / q->weight; |
d1b63fc8 | 374 | |
62e76326 | 375 | if (weighted_rtt < 1) |
376 | weighted_rtt = 1; | |
377 | ||
378 | q->rr_count += weighted_rtt; | |
379 | ||
4a7a3d56 | 380 | debugs(15, 3, "getWeightedRoundRobinParent: weighted_rtt " << weighted_rtt); |
d1b63fc8 | 381 | } |
62e76326 | 382 | |
bf8fe701 | 383 | debugs(15, 3, "getWeightedRoundRobinParent: returning " << (q ? q->host : "NULL")); |
d1b63fc8 | 384 | return q; |
385 | } | |
386 | ||
32a47e3e AJ |
387 | /** |
388 | * This gets called every 5 minutes to clear the round-robin counter. | |
389 | * The exact timing is an arbitrary default, set on estimate timing of a | |
390 | * large number of requests in a high-performance environment during the | |
391 | * period. The larger the number of requests between cycled resets the | |
392 | * more balanced the operations. | |
393 | * | |
f53969cc | 394 | \param data unused. |
32a47e3e AJ |
395 | \todo Make the reset timing a selectable parameter in squid.conf |
396 | */ | |
26ac0430 | 397 | static void |
32a47e3e AJ |
398 | peerClearRRLoop(void *data) |
399 | { | |
400 | peerClearRR(); | |
401 | eventAdd("peerClearRR", peerClearRRLoop, data, 5 * 60.0, 0); | |
402 | } | |
403 | ||
404 | /** | |
a3c6762c | 405 | * This gets called on startup and restart to kick off the CachePeer round-robin |
32a47e3e AJ |
406 | * maintenance event. It ensures that no matter how many times its called |
407 | * no more than one event is scheduled. | |
408 | */ | |
82056f1e | 409 | void |
32a47e3e | 410 | peerClearRRStart(void) |
82056f1e | 411 | { |
7a3f0061 | 412 | static bool event_added = false; |
32a47e3e AJ |
413 | if (!event_added) { |
414 | peerClearRRLoop(NULL); | |
7a3f0061 | 415 | event_added=true; |
32a47e3e AJ |
416 | } |
417 | } | |
62e76326 | 418 | |
32a47e3e AJ |
419 | /** |
420 | * Called whenever the round-robin counters need to be reset to a sane state. | |
421 | * So far those times are: | |
d85b8894 | 422 | * - On startup and reconfigure - to set the counters to sane initial settings. |
a3c6762c | 423 | * - When a CachePeer has revived from dead, to prevent the revived CachePeer being |
32a47e3e AJ |
424 | * flooded with requests which it has 'missed' during the down period. |
425 | */ | |
426 | void | |
427 | peerClearRR() | |
428 | { | |
a3c6762c | 429 | CachePeer *p = NULL; |
32a47e3e | 430 | for (p = Config.peers; p; p = p->next) { |
2da06da0 | 431 | p->rr_count = 1; |
32a47e3e AJ |
432 | } |
433 | } | |
62e76326 | 434 | |
32a47e3e | 435 | /** |
a3c6762c | 436 | * Perform all actions when a CachePeer is detected revived. |
32a47e3e AJ |
437 | */ |
438 | void | |
a3c6762c | 439 | peerAlive(CachePeer *p) |
32a47e3e AJ |
440 | { |
441 | if (p->stats.logged_state == PEER_DEAD && p->tcp_up) { | |
e0236918 | 442 | debugs(15, DBG_IMPORTANT, "Detected REVIVED " << neighborTypeStr(p) << ": " << p->name); |
32a47e3e AJ |
443 | p->stats.logged_state = PEER_ALIVE; |
444 | peerClearRR(); | |
e8dca475 CT |
445 | if (p->standby.mgr.valid()) |
446 | PeerPoolMgr::Checkpoint(p->standby.mgr, "revived peer"); | |
32a47e3e | 447 | } |
62e76326 | 448 | |
32a47e3e AJ |
449 | p->stats.last_reply = squid_curtime; |
450 | p->stats.probe_start = 0; | |
82056f1e | 451 | } |
452 | ||
a3c6762c | 453 | CachePeer * |
190154cf | 454 | getDefaultParent(HttpRequest * request) |
5269d0bd | 455 | { |
a3c6762c | 456 | CachePeer *p = NULL; |
62e76326 | 457 | |
40a1495e | 458 | for (p = Config.peers; p; p = p->next) { |
5c51bffb | 459 | if (neighborType(p, request->url) != PEER_PARENT) |
62e76326 | 460 | continue; |
461 | ||
462 | if (!p->options.default_parent) | |
463 | continue; | |
464 | ||
465 | if (!peerHTTPOkay(p, request)) | |
466 | continue; | |
467 | ||
bf8fe701 | 468 | debugs(15, 3, "getDefaultParent: returning " << p->host); |
62e76326 | 469 | |
470 | return p; | |
5269d0bd | 471 | } |
62e76326 | 472 | |
bf8fe701 | 473 | debugs(15, 3, "getDefaultParent: returning NULL"); |
5269d0bd | 474 | return NULL; |
475 | } | |
476 | ||
a3c6762c FC |
477 | CachePeer * |
478 | getNextPeer(CachePeer * p) | |
090089c4 | 479 | { |
b69f7771 | 480 | return p->next; |
090089c4 | 481 | } |
482 | ||
a3c6762c | 483 | CachePeer * |
deb79f06 | 484 | getFirstPeer(void) |
090089c4 | 485 | { |
40a1495e | 486 | return Config.peers; |
090089c4 | 487 | } |
488 | ||
b8d8561b | 489 | static void |
a3c6762c | 490 | neighborRemove(CachePeer * target) |
30a4f2a8 | 491 | { |
a3c6762c FC |
492 | CachePeer *p = NULL; |
493 | CachePeer **P = NULL; | |
40a1495e | 494 | p = Config.peers; |
495 | P = &Config.peers; | |
62e76326 | 496 | |
b69f7771 | 497 | while (p) { |
62e76326 | 498 | if (target == p) |
499 | break; | |
500 | ||
501 | P = &p->next; | |
502 | ||
503 | p = p->next; | |
b69f7771 | 504 | } |
62e76326 | 505 | |
b69f7771 | 506 | if (p) { |
62e76326 | 507 | *P = p->next; |
719815a0 AJ |
508 | p->next = NULL; |
509 | delete p; | |
5e263176 | 510 | --Config.npeers; |
4d64d74a | 511 | } |
62e76326 | 512 | |
40a1495e | 513 | first_ping = Config.peers; |
4d64d74a | 514 | } |
515 | ||
5f5e883f FC |
516 | static void |
517 | neighborsRegisterWithCacheManager() | |
518 | { | |
8822ebee | 519 | Mgr::RegisterAction("server_list", |
d9fc6862 A |
520 | "Peer Cache Statistics", |
521 | neighborDumpPeers, 0, 1); | |
5f5e883f | 522 | |
e0d28505 | 523 | if (Comm::IsConnOpen(icpIncomingConn)) { |
8822ebee | 524 | Mgr::RegisterAction("non_peers", |
d9fc6862 A |
525 | "List of Unknown sites sending ICP messages", |
526 | neighborDumpNonPeers, 0, 1); | |
5f5e883f FC |
527 | } |
528 | } | |
529 | ||
b8d8561b | 530 | void |
a86029b9 | 531 | neighbors_init(void) |
090089c4 | 532 | { |
30a4f2a8 | 533 | struct servent *sep = NULL; |
b263bd3f | 534 | const char *me = getMyHostname(); |
a3c6762c FC |
535 | CachePeer *thisPeer = NULL; |
536 | CachePeer *next = NULL; | |
62e76326 | 537 | |
6fdc2d18 FC |
538 | neighborsRegisterWithCacheManager(); |
539 | ||
e0d28505 | 540 | if (Comm::IsConnOpen(icpIncomingConn)) { |
62e76326 | 541 | |
542 | for (thisPeer = Config.peers; thisPeer; thisPeer = next) { | |
62e76326 | 543 | next = thisPeer->next; |
544 | ||
545 | if (0 != strcmp(thisPeer->host, me)) | |
546 | continue; | |
547 | ||
fa720bfb | 548 | for (AnyP::PortCfgPointer s = HttpPortList; s != NULL; s = s->next) { |
4dd643d5 | 549 | if (thisPeer->http_port != s->s.port()) |
62e76326 | 550 | continue; |
551 | ||
27774cee | 552 | debugs(15, DBG_IMPORTANT, "WARNING: Peer looks like this host"); |
bf8fe701 | 553 | |
27774cee | 554 | debugs(15, DBG_IMPORTANT, " Ignoring " << |
bf8fe701 | 555 | neighborTypeStr(thisPeer) << " " << thisPeer->host << |
556 | "/" << thisPeer->http_port << "/" << | |
557 | thisPeer->icp.port); | |
62e76326 | 558 | |
62e76326 | 559 | neighborRemove(thisPeer); |
560 | } | |
561 | } | |
b263bd3f | 562 | } |
62e76326 | 563 | |
5999b776 | 564 | peerRefreshDNS((void *) 1); |
62e76326 | 565 | |
9ca56f05 | 566 | sep = getservbyname("echo", "udp"); |
f45dd259 | 567 | echo_port = sep ? ntohs((unsigned short) sep->s_port) : 7; |
62e76326 | 568 | |
c68e4e90 | 569 | first_ping = Config.peers; |
62ee09ca | 570 | } |
571 | ||
b8d8561b | 572 | int |
190154cf | 573 | neighborsUdpPing(HttpRequest * request, |
62e76326 | 574 | StoreEntry * entry, |
575 | IRCB * callback, | |
576 | void *callback_data, | |
577 | int *exprep, | |
578 | int *timeout) | |
090089c4 | 579 | { |
3900307b | 580 | const char *url = entry->url(); |
b6c0e933 | 581 | MemObject *mem = entry->mem_obj; |
a3c6762c | 582 | CachePeer *p = NULL; |
090089c4 | 583 | int i; |
1061b406 | 584 | int reqnum = 0; |
6d2296d4 | 585 | int flags; |
9dee2904 | 586 | icp_common_t *query; |
429fdbec | 587 | int queries_sent = 0; |
0a0bf5db | 588 | int peers_pinged = 0; |
a8c926ff | 589 | int parent_timeout = 0, parent_exprep = 0; |
590 | int sibling_timeout = 0, sibling_exprep = 0; | |
1bf2cd49 | 591 | int mcast_timeout = 0, mcast_exprep = 0; |
090089c4 | 592 | |
40a1495e | 593 | if (Config.peers == NULL) |
62e76326 | 594 | return 0; |
595 | ||
9fb13bb6 | 596 | assert(entry->swap_status == SWAPOUT_NONE); |
62e76326 | 597 | |
b6c0e933 | 598 | mem->start_ping = current_time; |
62e76326 | 599 | |
b4e7f82d | 600 | mem->ping_reply_callback = callback; |
62e76326 | 601 | |
b6c0e933 | 602 | mem->ircb_data = callback_data; |
62e76326 | 603 | |
332dafa2 | 604 | reqnum = icpSetCacheKey((const cache_key *)entry->key); |
62e76326 | 605 | |
40a1495e | 606 | for (i = 0, p = first_ping; i++ < Config.npeers; p = p->next) { |
62e76326 | 607 | if (p == NULL) |
608 | p = Config.peers; | |
609 | ||
bf8fe701 | 610 | debugs(15, 5, "neighborsUdpPing: Peer " << p->host); |
62e76326 | 611 | |
612 | if (!peerWouldBePinged(p, request)) | |
f53969cc | 613 | continue; /* next CachePeer */ |
62e76326 | 614 | |
5db6bf73 | 615 | ++peers_pinged; |
62e76326 | 616 | |
bf8fe701 | 617 | debugs(15, 4, "neighborsUdpPing: pinging peer " << p->host << " for '" << url << "'"); |
62e76326 | 618 | |
bf8fe701 | 619 | debugs(15, 3, "neighborsUdpPing: key = '" << entry->getMD5Text() << "'"); |
62e76326 | 620 | |
bf8fe701 | 621 | debugs(15, 3, "neighborsUdpPing: reqnum = " << reqnum); |
090089c4 | 622 | |
dc9d133b | 623 | #if USE_HTCP |
4f4fa815 | 624 | if (p->options.htcp && !p->options.htcp_only_clr) { |
bebf08ff AJ |
625 | if (Config.Port.htcp <= 0) { |
626 | debugs(15, DBG_CRITICAL, "HTCP is disabled! Cannot send HTCP request to peer."); | |
627 | continue; | |
628 | } | |
629 | ||
bf8fe701 | 630 | debugs(15, 3, "neighborsUdpPing: sending HTCP query"); |
65d448bc AJ |
631 | if (htcpQuery(entry, request, p) <= 0) |
632 | continue; // unable to send. | |
62e76326 | 633 | } else |
dc9d133b | 634 | #endif |
bebf08ff | 635 | { |
e0d28505 | 636 | if (Config.Port.icp <= 0 || !Comm::IsConnOpen(icpOutgoingConn)) { |
bebf08ff AJ |
637 | debugs(15, DBG_CRITICAL, "ICP is disabled! Cannot send ICP request to peer."); |
638 | continue; | |
62e76326 | 639 | } else { |
62e76326 | 640 | |
bebf08ff | 641 | if (p->type == PEER_MULTICAST) |
e0d28505 | 642 | mcastSetTtl(icpOutgoingConn->fd, p->mcast.ttl); |
bebf08ff AJ |
643 | |
644 | if (p->icp.port == echo_port) { | |
645 | debugs(15, 4, "neighborsUdpPing: Looks like a dumb cache, send DECHO ping"); | |
bebf08ff | 646 | query = _icp_common_t::createMessage(ICP_DECHO, 0, url, reqnum, 0); |
e0d28505 | 647 | icpUdpSend(icpOutgoingConn->fd, p->in_addr, query, LOG_ICP_QUERY, 0); |
bebf08ff AJ |
648 | } else { |
649 | flags = 0; | |
62e76326 | 650 | |
bebf08ff AJ |
651 | if (Config.onoff.query_icmp) |
652 | if (p->icp.version == ICP_VERSION_2) | |
653 | flags |= ICP_FLAG_SRC_RTT; | |
62e76326 | 654 | |
bebf08ff AJ |
655 | query = _icp_common_t::createMessage(ICP_QUERY, flags, url, reqnum, 0); |
656 | ||
01bd87d8 | 657 | icpUdpSend(icpOutgoingConn->fd, p->in_addr, query, LOG_ICP_QUERY, 0.0); |
bebf08ff | 658 | } |
62e76326 | 659 | } |
bebf08ff | 660 | } |
62e76326 | 661 | |
5db6bf73 | 662 | ++queries_sent; |
62e76326 | 663 | |
5db6bf73 | 664 | ++ p->stats.pings_sent; |
62e76326 | 665 | |
666 | if (p->type == PEER_MULTICAST) { | |
1bf2cd49 | 667 | mcast_exprep += p->mcast.n_replies_expected; |
668 | mcast_timeout += (p->stats.rtt * p->mcast.n_replies_expected); | |
62e76326 | 669 | } else if (neighborUp(p)) { |
670 | /* its alive, expect a reply from it */ | |
671 | ||
5c51bffb | 672 | if (neighborType(p, request->url) == PEER_PARENT) { |
5db6bf73 | 673 | ++parent_exprep; |
62e76326 | 674 | parent_timeout += p->stats.rtt; |
675 | } else { | |
5db6bf73 | 676 | ++sibling_exprep; |
62e76326 | 677 | sibling_timeout += p->stats.rtt; |
678 | } | |
679 | } else { | |
680 | /* Neighbor is dead; ping it anyway, but don't expect a reply */ | |
681 | /* log it once at the threshold */ | |
682 | ||
683 | if (p->stats.logged_state == PEER_ALIVE) { | |
e0236918 | 684 | debugs(15, DBG_IMPORTANT, "Detected DEAD " << neighborTypeStr(p) << ": " << p->name); |
62e76326 | 685 | p->stats.logged_state = PEER_DEAD; |
686 | } | |
687 | } | |
688 | ||
689 | p->stats.last_query = squid_curtime; | |
690 | ||
67c8308c | 691 | /* |
a3c6762c FC |
692 | * keep probe_start == 0 for a multicast CachePeer, |
693 | * so neighborUp() never says this CachePeer is dead. | |
67c8308c | 694 | */ |
695 | ||
696 | if ((p->type != PEER_MULTICAST) && (p->stats.probe_start == 0)) | |
62e76326 | 697 | p->stats.probe_start = squid_curtime; |
090089c4 | 698 | } |
62e76326 | 699 | |
40a1495e | 700 | if ((first_ping = first_ping->next) == NULL) |
62e76326 | 701 | first_ping = Config.peers; |
090089c4 | 702 | |
a8c926ff | 703 | /* |
704 | * How many replies to expect? | |
705 | */ | |
1bf2cd49 | 706 | *exprep = parent_exprep + sibling_exprep + mcast_exprep; |
a8c926ff | 707 | |
52040193 | 708 | /* |
465dc415 | 709 | * If there is a configured timeout, use it |
52040193 | 710 | */ |
465dc415 | 711 | if (Config.Timeout.icp_query) |
62e76326 | 712 | *timeout = Config.Timeout.icp_query; |
28993292 | 713 | else { |
62e76326 | 714 | if (*exprep > 0) { |
715 | if (parent_exprep) | |
716 | *timeout = 2 * parent_timeout / parent_exprep; | |
1bf2cd49 | 717 | else if (mcast_exprep) |
718 | *timeout = 2 * mcast_timeout / mcast_exprep; | |
62e76326 | 719 | else |
720 | *timeout = 2 * sibling_timeout / sibling_exprep; | |
721 | } else | |
f53969cc | 722 | *timeout = 2000; /* 2 seconds */ |
62e76326 | 723 | |
724 | if (Config.Timeout.icp_query_max) | |
725 | if (*timeout > Config.Timeout.icp_query_max) | |
726 | *timeout = Config.Timeout.icp_query_max; | |
727 | ||
728 | if (*timeout < Config.Timeout.icp_query_min) | |
729 | *timeout = Config.Timeout.icp_query_min; | |
28993292 | 730 | } |
62e76326 | 731 | |
0a0bf5db | 732 | return peers_pinged; |
090089c4 | 733 | } |
734 | ||
a3c6762c | 735 | /* lookup the digest of a given CachePeer */ |
26b164ac | 736 | lookup_t |
a3c6762c | 737 | peerDigestLookup(CachePeer * p, HttpRequest * request) |
26b164ac | 738 | { |
6cfa8966 | 739 | #if USE_CACHE_DIGESTS |
f66a9ef4 | 740 | const cache_key *key = request ? storeKeyPublicByRequest(request) : NULL; |
26b164ac | 741 | assert(p); |
0c511722 | 742 | assert(request); |
bf8fe701 | 743 | debugs(15, 5, "peerDigestLookup: peer " << p->host); |
4b4cd312 | 744 | /* does the peeer have a valid digest? */ |
62e76326 | 745 | |
e13ee7ad | 746 | if (!p->digest) { |
bf8fe701 | 747 | debugs(15, 5, "peerDigestLookup: gone!"); |
62e76326 | 748 | return LOOKUP_NONE; |
6755df2e | 749 | } else if (!peerHTTPOkay(p, request)) { |
bf8fe701 | 750 | debugs(15, 5, "peerDigestLookup: !peerHTTPOkay"); |
6755df2e | 751 | return LOOKUP_NONE; |
e13ee7ad | 752 | } else if (!p->digest->flags.needed) { |
bf8fe701 | 753 | debugs(15, 5, "peerDigestLookup: note need"); |
62e76326 | 754 | peerDigestNeeded(p->digest); |
755 | return LOOKUP_NONE; | |
4ed0e075 | 756 | } else if (!p->digest->flags.usable) { |
bf8fe701 | 757 | debugs(15, 5, "peerDigestLookup: !ready && " << (p->digest->flags.requested ? "" : "!") << "requested"); |
62e76326 | 758 | return LOOKUP_NONE; |
26b164ac | 759 | } |
62e76326 | 760 | |
bf8fe701 | 761 | debugs(15, 5, "peerDigestLookup: OK to lookup peer " << p->host); |
e13ee7ad | 762 | assert(p->digest->cd); |
26b164ac | 763 | /* does digest predict a hit? */ |
62e76326 | 764 | |
6fc4e508 | 765 | if (!p->digest->cd->contains(key)) |
62e76326 | 766 | return LOOKUP_MISS; |
767 | ||
bf8fe701 | 768 | debugs(15, 5, "peerDigestLookup: peer " << p->host << " says HIT!"); |
62e76326 | 769 | |
26b164ac | 770 | return LOOKUP_HIT; |
62e76326 | 771 | |
26b164ac | 772 | #endif |
62e76326 | 773 | |
26b164ac | 774 | return LOOKUP_NONE; |
775 | } | |
776 | ||
a3c6762c FC |
777 | /* select best CachePeer based on cache digests */ |
778 | CachePeer * | |
190154cf | 779 | neighborsDigestSelect(HttpRequest * request) |
a54d3f8e | 780 | { |
a3c6762c | 781 | CachePeer *best_p = NULL; |
6cfa8966 | 782 | #if USE_CACHE_DIGESTS |
62e76326 | 783 | |
a54d3f8e | 784 | int best_rtt = 0; |
785 | int choice_count = 0; | |
786 | int ichoice_count = 0; | |
a3c6762c | 787 | CachePeer *p; |
a54d3f8e | 788 | int p_rtt; |
789 | int i; | |
62e76326 | 790 | |
45e5102d | 791 | if (!request->flags.hierarchical) |
62e76326 | 792 | return NULL; |
793 | ||
e91e2a72 | 794 | storeKeyPublicByRequest(request); |
62e76326 | 795 | |
a54d3f8e | 796 | for (i = 0, p = first_ping; i++ < Config.npeers; p = p->next) { |
62e76326 | 797 | lookup_t lookup; |
798 | ||
799 | if (!p) | |
800 | p = Config.peers; | |
801 | ||
802 | if (i == 1) | |
803 | first_ping = p; | |
804 | ||
805 | lookup = peerDigestLookup(p, request); | |
806 | ||
807 | if (lookup == LOOKUP_NONE) | |
808 | continue; | |
809 | ||
5db6bf73 | 810 | ++choice_count; |
62e76326 | 811 | |
812 | if (lookup == LOOKUP_MISS) | |
813 | continue; | |
814 | ||
815 | p_rtt = netdbHostRtt(p->host); | |
816 | ||
bf8fe701 | 817 | debugs(15, 5, "neighborsDigestSelect: peer " << p->host << " rtt: " << p_rtt); |
62e76326 | 818 | |
a3c6762c | 819 | /* is this CachePeer better than others in terms of rtt ? */ |
62e76326 | 820 | if (!best_p || (p_rtt && p_rtt < best_rtt)) { |
821 | best_p = p; | |
822 | best_rtt = p_rtt; | |
823 | ||
f53969cc | 824 | if (p_rtt) /* informative choice (aka educated guess) */ |
5db6bf73 | 825 | ++ichoice_count; |
62e76326 | 826 | |
bf8fe701 | 827 | debugs(15, 4, "neighborsDigestSelect: peer " << p->host << " leads with rtt " << best_rtt); |
62e76326 | 828 | } |
a54d3f8e | 829 | } |
62e76326 | 830 | |
bf8fe701 | 831 | debugs(15, 4, "neighborsDigestSelect: choices: " << choice_count << " (" << ichoice_count << ")"); |
26b164ac | 832 | peerNoteDigestLookup(request, best_p, |
62e76326 | 833 | best_p ? LOOKUP_HIT : (choice_count ? LOOKUP_MISS : LOOKUP_NONE)); |
a54d3f8e | 834 | request->hier.n_choices = choice_count; |
835 | request->hier.n_ichoices = ichoice_count; | |
836 | #endif | |
62e76326 | 837 | |
a54d3f8e | 838 | return best_p; |
839 | } | |
840 | ||
26b164ac | 841 | void |
a3c6762c | 842 | peerNoteDigestLookup(HttpRequest * request, CachePeer * p, lookup_t lookup) |
26b164ac | 843 | { |
6cfa8966 | 844 | #if USE_CACHE_DIGESTS |
26b164ac | 845 | if (p) |
0a84e4fb | 846 | strncpy(request->hier.cd_host, p->host, sizeof(request->hier.cd_host)-1); |
26b164ac | 847 | else |
62e76326 | 848 | *request->hier.cd_host = '\0'; |
849 | ||
26b164ac | 850 | request->hier.cd_lookup = lookup; |
4b981814 | 851 | debugs(15, 4, "peerNoteDigestLookup: peer " << (p? p->host : "<none>") << ", lookup: " << lookup_t_str[lookup] ); |
26b164ac | 852 | #endif |
853 | } | |
854 | ||
d73844ca | 855 | static void |
ced8def3 | 856 | neighborAlive(CachePeer * p, const MemObject *, const icp_common_t * header) |
4eda6afe | 857 | { |
32a47e3e | 858 | peerAlive(p); |
5db6bf73 | 859 | ++ p->stats.pings_acked; |
62e76326 | 860 | |
27cd7235 | 861 | if ((icp_opcode) header->opcode <= ICP_END) |
5db6bf73 | 862 | ++ p->icp.counts[header->opcode]; |
62e76326 | 863 | |
44f2f2e4 | 864 | p->icp.version = (int) header->version; |
865 | } | |
866 | ||
867 | static void | |
a3c6762c | 868 | neighborUpdateRtt(CachePeer * p, MemObject * mem) |
44f2f2e4 | 869 | { |
d1b63fc8 | 870 | int rtt, rtt_av_factor; |
62e76326 | 871 | |
d2cd6935 | 872 | if (!mem) |
62e76326 | 873 | return; |
874 | ||
44f2f2e4 | 875 | if (!mem->start_ping.tv_sec) |
62e76326 | 876 | return; |
877 | ||
44f2f2e4 | 878 | rtt = tvSubMsec(mem->start_ping, current_time); |
62e76326 | 879 | |
1b6ef2d2 | 880 | if (rtt < 1 || rtt > 10000) |
62e76326 | 881 | return; |
882 | ||
d1b63fc8 | 883 | rtt_av_factor = RTT_AV_FACTOR; |
62e76326 | 884 | |
d1b63fc8 | 885 | if (p->options.weighted_roundrobin) |
62e76326 | 886 | rtt_av_factor = RTT_BACKGROUND_AV_FACTOR; |
887 | ||
a98bcbee | 888 | p->stats.rtt = Math::intAverage(p->stats.rtt, rtt, p->stats.pings_acked, rtt_av_factor); |
4eda6afe | 889 | } |
090089c4 | 890 | |
399cabec | 891 | #if USE_HTCP |
892 | static void | |
ced8def3 | 893 | neighborAliveHtcp(CachePeer * p, const MemObject *, const HtcpReplyData * htcp) |
399cabec | 894 | { |
32a47e3e | 895 | peerAlive(p); |
5db6bf73 FC |
896 | ++ p->stats.pings_acked; |
897 | ++ p->htcp.counts[htcp->hit ? 1 : 0]; | |
44f2f2e4 | 898 | p->htcp.version = htcp->version; |
399cabec | 899 | } |
62e76326 | 900 | |
399cabec | 901 | #endif |
902 | ||
38792624 | 903 | static void |
a3c6762c | 904 | neighborCountIgnored(CachePeer * p) |
a7e59001 | 905 | { |
b69f7771 | 906 | if (p == NULL) |
62e76326 | 907 | return; |
908 | ||
5db6bf73 | 909 | ++ p->stats.ignored_replies; |
62e76326 | 910 | |
5db6bf73 | 911 | ++NLateReplies; |
a7e59001 | 912 | } |
913 | ||
a3c6762c | 914 | static CachePeer *non_peers = NULL; |
e102ebda | 915 | |
916 | static void | |
b7ac5457 | 917 | neighborIgnoreNonPeer(const Ip::Address &from, icp_opcode opcode) |
e102ebda | 918 | { |
a3c6762c | 919 | CachePeer *np; |
62e76326 | 920 | |
26ac0430 | 921 | for (np = non_peers; np; np = np->next) { |
cc192b50 | 922 | if (np->in_addr != from) |
62e76326 | 923 | continue; |
924 | ||
4dd643d5 | 925 | if (np->in_addr.port() != from.port()) |
62e76326 | 926 | continue; |
927 | ||
928 | break; | |
e102ebda | 929 | } |
62e76326 | 930 | |
26ac0430 | 931 | if (np == NULL) { |
719815a0 | 932 | np = new CachePeer; |
cc192b50 | 933 | np->in_addr = from; |
4dd643d5 | 934 | np->icp.port = from.port(); |
62e76326 | 935 | np->type = PEER_NONE; |
cc192b50 | 936 | np->host = new char[MAX_IPSTRLEN]; |
4dd643d5 | 937 | from.toStr(np->host,MAX_IPSTRLEN); |
62e76326 | 938 | np->next = non_peers; |
939 | non_peers = np; | |
e102ebda | 940 | } |
62e76326 | 941 | |
5db6bf73 | 942 | ++ np->icp.counts[opcode]; |
62e76326 | 943 | |
e4cc2fdf | 944 | if (isPowTen(++np->stats.ignored_replies)) |
e0236918 | 945 | debugs(15, DBG_IMPORTANT, "WARNING: Ignored " << np->stats.ignored_replies << " replies from non-peer " << np->host); |
e102ebda | 946 | } |
947 | ||
429fdbec | 948 | /* ignoreMulticastReply |
26ac0430 | 949 | * |
d6827718 | 950 | * * We want to ignore replies from multicast peers if the |
a3c6762c | 951 | * * cache_host_domain rules would normally prevent the CachePeer |
d6827718 | 952 | * * from being used |
429fdbec | 953 | */ |
954 | static int | |
a3c6762c | 955 | ignoreMulticastReply(CachePeer * p, MemObject * mem) |
429fdbec | 956 | { |
b69f7771 | 957 | if (p == NULL) |
62e76326 | 958 | return 0; |
959 | ||
cd196bc8 | 960 | if (!p->options.mcast_responder) |
62e76326 | 961 | return 0; |
962 | ||
b69f7771 | 963 | if (peerHTTPOkay(p, mem->request)) |
62e76326 | 964 | return 0; |
965 | ||
429fdbec | 966 | return 1; |
967 | } | |
968 | ||
4b981814 AJ |
969 | /** |
970 | * I should attach these records to the entry. We take the first | |
429fdbec | 971 | * hit we get our wait until everyone misses. The timeout handler |
972 | * call needs to nip this shopping list or call one of the misses. | |
26ac0430 | 973 | * |
429fdbec | 974 | * If a hit process is already started, then sobeit |
975 | */ | |
b8d8561b | 976 | void |
b7ac5457 | 977 | neighborsUdpAck(const cache_key * key, icp_common_t * header, const Ip::Address &from) |
090089c4 | 978 | { |
a3c6762c | 979 | CachePeer *p = NULL; |
5ad33356 | 980 | StoreEntry *entry; |
981 | MemObject *mem = NULL; | |
b6c0e933 | 982 | peer_t ntype = PEER_NONE; |
a7e59001 | 983 | icp_opcode opcode = (icp_opcode) header->opcode; |
090089c4 | 984 | |
4a7a3d56 | 985 | debugs(15, 6, "neighborsUdpAck: opcode " << opcode << " '" << storeKeyText(key) << "'"); |
62e76326 | 986 | |
c8f4eac4 | 987 | if (NULL != (entry = Store::Root().get(key))) |
62e76326 | 988 | mem = entry->mem_obj; |
989 | ||
b69f7771 | 990 | if ((p = whichPeer(from))) |
62e76326 | 991 | neighborAlive(p, mem, header); |
992 | ||
27cd7235 | 993 | if (opcode > ICP_END) |
62e76326 | 994 | return; |
995 | ||
4b981814 | 996 | const char *opcode_d = icp_opcode_str[opcode]; |
62e76326 | 997 | |
41587298 | 998 | if (p) |
62e76326 | 999 | neighborUpdateRtt(p, mem); |
1000 | ||
5ad33356 | 1001 | /* Does the entry exist? */ |
26ac0430 | 1002 | if (NULL == entry) { |
bf8fe701 | 1003 | debugs(12, 3, "neighborsUdpAck: Cache key '" << storeKeyText(key) << "' not found"); |
62e76326 | 1004 | neighborCountIgnored(p); |
1005 | return; | |
5ad33356 | 1006 | } |
62e76326 | 1007 | |
2d1c6a4f | 1008 | /* check if someone is already fetching it */ |
26ac0430 | 1009 | if (EBIT_TEST(entry->flags, ENTRY_DISPATCHED)) { |
bf8fe701 | 1010 | debugs(15, 3, "neighborsUdpAck: '" << storeKeyText(key) << "' already being fetched."); |
62e76326 | 1011 | neighborCountIgnored(p); |
1012 | return; | |
d2af9477 | 1013 | } |
62e76326 | 1014 | |
26ac0430 | 1015 | if (mem == NULL) { |
bf8fe701 | 1016 | debugs(15, 2, "Ignoring " << opcode_d << " for missing mem_obj: " << storeKeyText(key)); |
62e76326 | 1017 | neighborCountIgnored(p); |
1018 | return; | |
8de2f7ad | 1019 | } |
62e76326 | 1020 | |
26ac0430 | 1021 | if (entry->ping_status != PING_WAITING) { |
bf8fe701 | 1022 | debugs(15, 2, "neighborsUdpAck: Late " << opcode_d << " for " << storeKeyText(key)); |
62e76326 | 1023 | neighborCountIgnored(p); |
1024 | return; | |
8de2f7ad | 1025 | } |
62e76326 | 1026 | |
1bfe9ade | 1027 | if (!entry->locked()) { |
5bd484b5 | 1028 | // TODO: many entries are unlocked; why is this reported at level 1? |
e0236918 | 1029 | debugs(12, DBG_IMPORTANT, "neighborsUdpAck: '" << storeKeyText(key) << "' has no locks"); |
62e76326 | 1030 | neighborCountIgnored(p); |
1031 | return; | |
090089c4 | 1032 | } |
62e76326 | 1033 | |
bf8fe701 | 1034 | debugs(15, 3, "neighborsUdpAck: " << opcode_d << " for '" << storeKeyText(key) << "' from " << (p ? p->host : "source") << " "); |
62e76326 | 1035 | |
26ac0430 | 1036 | if (p) { |
5c51bffb | 1037 | ntype = neighborType(p, mem->request->url); |
44f2f2e4 | 1038 | } |
62e76326 | 1039 | |
26ac0430 | 1040 | if (ignoreMulticastReply(p, mem)) { |
62e76326 | 1041 | neighborCountIgnored(p); |
26ac0430 | 1042 | } else if (opcode == ICP_MISS) { |
62e76326 | 1043 | if (p == NULL) { |
1044 | neighborIgnoreNonPeer(from, opcode); | |
1045 | } else { | |
0c3d3f65 | 1046 | mem->ping_reply_callback(p, ntype, AnyP::PROTO_ICP, header, mem->ircb_data); |
62e76326 | 1047 | } |
26ac0430 | 1048 | } else if (opcode == ICP_HIT) { |
62e76326 | 1049 | if (p == NULL) { |
1050 | neighborIgnoreNonPeer(from, opcode); | |
1051 | } else { | |
1052 | header->opcode = ICP_HIT; | |
0c3d3f65 | 1053 | mem->ping_reply_callback(p, ntype, AnyP::PROTO_ICP, header, mem->ircb_data); |
62e76326 | 1054 | } |
26ac0430 | 1055 | } else if (opcode == ICP_DECHO) { |
62e76326 | 1056 | if (p == NULL) { |
1057 | neighborIgnoreNonPeer(from, opcode); | |
1058 | } else if (ntype == PEER_SIBLING) { | |
1059 | debug_trap("neighborsUdpAck: Found non-ICP cache as SIBLING\n"); | |
1060 | debug_trap("neighborsUdpAck: non-ICP neighbors must be a PARENT\n"); | |
1061 | } else { | |
0c3d3f65 | 1062 | mem->ping_reply_callback(p, ntype, AnyP::PROTO_ICP, header, mem->ircb_data); |
62e76326 | 1063 | } |
26ac0430 | 1064 | } else if (opcode == ICP_SECHO) { |
62e76326 | 1065 | if (p) { |
e0236918 | 1066 | debugs(15, DBG_IMPORTANT, "Ignoring SECHO from neighbor " << p->host); |
62e76326 | 1067 | neighborCountIgnored(p); |
62e76326 | 1068 | } else { |
e0236918 | 1069 | debugs(15, DBG_IMPORTANT, "Unsolicited SECHO from " << from); |
62e76326 | 1070 | } |
26ac0430 | 1071 | } else if (opcode == ICP_DENIED) { |
62e76326 | 1072 | if (p == NULL) { |
1073 | neighborIgnoreNonPeer(from, opcode); | |
1074 | } else if (p->stats.pings_acked > 100) { | |
1075 | if (100 * p->icp.counts[ICP_DENIED] / p->stats.pings_acked > 95) { | |
fa84c01d FC |
1076 | debugs(15, DBG_CRITICAL, "95%% of replies from '" << p->host << "' are UDP_DENIED"); |
1077 | debugs(15, DBG_CRITICAL, "Disabling '" << p->host << "', please check your configuration."); | |
62e76326 | 1078 | neighborRemove(p); |
1079 | p = NULL; | |
1080 | } else { | |
1081 | neighborCountIgnored(p); | |
1082 | } | |
1083 | } | |
26ac0430 | 1084 | } else if (opcode == ICP_MISS_NOFETCH) { |
0c3d3f65 | 1085 | mem->ping_reply_callback(p, ntype, AnyP::PROTO_ICP, header, mem->ircb_data); |
26ac0430 | 1086 | } else { |
fa84c01d | 1087 | debugs(15, DBG_CRITICAL, "neighborsUdpAck: Unexpected ICP reply: " << opcode_d); |
d2af9477 | 1088 | } |
090089c4 | 1089 | } |
1090 | ||
a3c6762c | 1091 | CachePeer * |
40a1495e | 1092 | peerFindByName(const char *name) |
98ffb7e4 | 1093 | { |
a3c6762c | 1094 | CachePeer *p = NULL; |
62e76326 | 1095 | |
40a1495e | 1096 | for (p = Config.peers; p; p = p->next) { |
62e76326 | 1097 | if (!strcasecmp(name, p->name)) |
1098 | break; | |
98ffb7e4 | 1099 | } |
62e76326 | 1100 | |
b69f7771 | 1101 | return p; |
98ffb7e4 | 1102 | } |
b012353a | 1103 | |
a3c6762c | 1104 | CachePeer * |
db1cd23c | 1105 | peerFindByNameAndPort(const char *name, unsigned short port) |
1106 | { | |
a3c6762c | 1107 | CachePeer *p = NULL; |
62e76326 | 1108 | |
db1cd23c | 1109 | for (p = Config.peers; p; p = p->next) { |
62e76326 | 1110 | if (strcasecmp(name, p->name)) |
1111 | continue; | |
1112 | ||
1113 | if (port != p->http_port) | |
1114 | continue; | |
1115 | ||
1116 | break; | |
db1cd23c | 1117 | } |
62e76326 | 1118 | |
db1cd23c | 1119 | return p; |
1120 | } | |
1121 | ||
5269d0bd | 1122 | int |
a3c6762c | 1123 | neighborUp(const CachePeer * p) |
5269d0bd | 1124 | { |
eb406bb7 | 1125 | if (!p->tcp_up) { |
a3c6762c | 1126 | if (!peerProbeConnect((CachePeer *) p)) { |
cc192b50 | 1127 | debugs(15, 8, "neighborUp: DOWN (probed): " << p->host << " (" << p->in_addr << ")"); |
4ed0e075 | 1128 | return 0; |
cc192b50 | 1129 | } |
eb406bb7 | 1130 | } |
62e76326 | 1131 | |
64b8103b | 1132 | /* |
a3c6762c | 1133 | * The CachePeer can not be UP if we don't have any IP addresses |
26ac0430 | 1134 | * for it. |
64b8103b | 1135 | */ |
cc192b50 | 1136 | if (0 == p->n_addresses) { |
1137 | debugs(15, 8, "neighborUp: DOWN (no-ip): " << p->host << " (" << p->in_addr << ")"); | |
62e76326 | 1138 | return 0; |
cc192b50 | 1139 | } |
62e76326 | 1140 | |
cc192b50 | 1141 | if (p->options.no_query) { |
1142 | debugs(15, 8, "neighborUp: UP (no-query): " << p->host << " (" << p->in_addr << ")"); | |
67c8308c | 1143 | return 1; |
cc192b50 | 1144 | } |
67c8308c | 1145 | |
1146 | if (p->stats.probe_start != 0 && | |
cc192b50 | 1147 | squid_curtime - p->stats.probe_start > Config.Timeout.deadPeer) { |
1148 | debugs(15, 8, "neighborUp: DOWN (dead): " << p->host << " (" << p->in_addr << ")"); | |
67c8308c | 1149 | return 0; |
cc192b50 | 1150 | } |
67c8308c | 1151 | |
cc192b50 | 1152 | debugs(15, 8, "neighborUp: UP: " << p->host << " (" << p->in_addr << ")"); |
03b82057 | 1153 | return 1; |
5269d0bd | 1154 | } |
1155 | ||
e13ee7ad | 1156 | void |
a3c6762c | 1157 | peerNoteDigestGone(CachePeer * p) |
e13ee7ad | 1158 | { |
1159 | #if USE_CACHE_DIGESTS | |
fa80a8ef | 1160 | cbdataReferenceDone(p->digest); |
e13ee7ad | 1161 | #endif |
1162 | } | |
1163 | ||
dd4bd44e | 1164 | static void |
4a3b98d7 | 1165 | peerDNSConfigure(const ipcache_addrs *ia, const Dns::LookupDetails &, void *data) |
dd4bd44e | 1166 | { |
e8dca475 CT |
1167 | // TODO: connections to no-longer valid IP addresses should be |
1168 | // closed when we can detect such IP addresses. | |
1169 | ||
a3c6762c | 1170 | CachePeer *p = (CachePeer *)data; |
62e76326 | 1171 | |
dd4bd44e | 1172 | int j; |
62e76326 | 1173 | |
b69f7771 | 1174 | if (p->n_addresses == 0) { |
e0236918 | 1175 | debugs(15, DBG_IMPORTANT, "Configuring " << neighborTypeStr(p) << " " << p->host << "/" << p->http_port << "/" << p->icp.port); |
62e76326 | 1176 | |
1177 | if (p->type == PEER_MULTICAST) | |
e0236918 | 1178 | debugs(15, DBG_IMPORTANT, " Multicast TTL = " << p->mcast.ttl); |
b69f7771 | 1179 | } |
62e76326 | 1180 | |
b69f7771 | 1181 | p->n_addresses = 0; |
62e76326 | 1182 | |
dd4bd44e | 1183 | if (ia == NULL) { |
fa84c01d | 1184 | debugs(0, DBG_CRITICAL, "WARNING: DNS lookup for '" << p->host << "' failed!"); |
62e76326 | 1185 | return; |
dd4bd44e | 1186 | } |
62e76326 | 1187 | |
c04fe656 | 1188 | if ((int) ia->count < 1) { |
fa84c01d | 1189 | debugs(0, DBG_CRITICAL, "WARNING: No IP address found for '" << p->host << "'!"); |
62e76326 | 1190 | return; |
dd4bd44e | 1191 | } |
62e76326 | 1192 | |
ff9970cc | 1193 | p->tcp_up = p->connect_fail_limit; |
dc3a5177 | 1194 | |
5db6bf73 | 1195 | for (j = 0; j < (int) ia->count && j < PEER_MAX_ADDRESSES; ++j) { |
62e76326 | 1196 | p->addresses[j] = ia->in_addrs[j]; |
cc192b50 | 1197 | debugs(15, 2, "--> IP address #" << j << ": " << p->addresses[j]); |
5db6bf73 | 1198 | ++ p->n_addresses; |
dd4bd44e | 1199 | } |
62e76326 | 1200 | |
4dd643d5 | 1201 | p->in_addr.setEmpty(); |
cc192b50 | 1202 | p->in_addr = p->addresses[0]; |
4dd643d5 | 1203 | p->in_addr.port(p->icp.port); |
62e76326 | 1204 | |
b69f7771 | 1205 | if (p->type == PEER_MULTICAST) |
62e76326 | 1206 | peerCountMcastPeersSchedule(p, 10); |
1207 | ||
9b5c4a9a | 1208 | #if USE_ICMP |
e51c8197 | 1209 | if (p->type != PEER_MULTICAST && IamWorkerProcess()) |
62e76326 | 1210 | if (!p->options.no_netdb_exchange) |
1211 | eventAddIsh("netdbExchangeStart", netdbExchangeStart, p, 30.0, 1); | |
9b5c4a9a AJ |
1212 | #endif |
1213 | ||
e8dca475 CT |
1214 | if (p->standby.mgr.valid()) |
1215 | PeerPoolMgr::Checkpoint(p->standby.mgr, "resolved peer"); | |
dd4bd44e | 1216 | } |
1217 | ||
1218 | static void | |
51242273 | 1219 | peerRefreshDNS(void *data) |
dd4bd44e | 1220 | { |
a3c6762c | 1221 | CachePeer *p = NULL; |
62e76326 | 1222 | |
46ca5fc6 | 1223 | if (eventFind(peerRefreshDNS, NULL)) |
62e76326 | 1224 | eventDelete(peerRefreshDNS, NULL); |
1225 | ||
51242273 | 1226 | if (!data && 0 == stat5minClientRequests()) { |
62e76326 | 1227 | /* no recent client traffic, wait a bit */ |
1228 | eventAddIsh("peerRefreshDNS", peerRefreshDNS, NULL, 180.0, 1); | |
1229 | return; | |
dd4bd44e | 1230 | } |
62e76326 | 1231 | |
1f3c4622 | 1232 | for (p = Config.peers; p; p = p->next) |
62e76326 | 1233 | ipcache_nbgethostbyname(p->host, peerDNSConfigure, p); |
1234 | ||
dd4bd44e | 1235 | /* Reconfigure the peers every hour */ |
52040193 | 1236 | eventAddIsh("peerRefreshDNS", peerRefreshDNS, NULL, 3600.0, 1); |
dd4bd44e | 1237 | } |
e924600d | 1238 | |
4ed0e075 | 1239 | static void |
a3c6762c | 1240 | peerConnectFailedSilent(CachePeer * p) |
eb406bb7 | 1241 | { |
1242 | p->stats.last_connect_failure = squid_curtime; | |
62e76326 | 1243 | |
eb406bb7 | 1244 | if (!p->tcp_up) { |
bf8fe701 | 1245 | debugs(15, 2, "TCP connection to " << p->host << "/" << p->http_port << |
1246 | " dead"); | |
62e76326 | 1247 | return; |
eb406bb7 | 1248 | } |
62e76326 | 1249 | |
5e263176 | 1250 | -- p->tcp_up; |
62e76326 | 1251 | |
eb406bb7 | 1252 | if (!p->tcp_up) { |
e0236918 | 1253 | debugs(15, DBG_IMPORTANT, "Detected DEAD " << neighborTypeStr(p) << ": " << p->name); |
62e76326 | 1254 | p->stats.logged_state = PEER_DEAD; |
eb406bb7 | 1255 | } |
1256 | } | |
1257 | ||
4ed0e075 | 1258 | void |
a3c6762c | 1259 | peerConnectFailed(CachePeer *p) |
4ed0e075 | 1260 | { |
e0236918 | 1261 | debugs(15, DBG_IMPORTANT, "TCP connection to " << p->host << "/" << p->http_port << " failed"); |
4ed0e075 | 1262 | peerConnectFailedSilent(p); |
1263 | } | |
1264 | ||
eb406bb7 | 1265 | void |
a3c6762c | 1266 | peerConnectSucceded(CachePeer * p) |
eb406bb7 | 1267 | { |
1268 | if (!p->tcp_up) { | |
bf8fe701 | 1269 | debugs(15, 2, "TCP connection to " << p->host << "/" << p->http_port << " succeded"); |
ff9970cc | 1270 | p->tcp_up = p->connect_fail_limit; // NP: so peerAlive(p) works properly. |
32a47e3e | 1271 | peerAlive(p); |
26ac0430 AJ |
1272 | if (!p->n_addresses) |
1273 | ipcache_nbgethostbyname(p->host, peerDNSConfigure, p); | |
1274 | } else | |
ff9970cc | 1275 | p->tcp_up = p->connect_fail_limit; |
eb406bb7 | 1276 | } |
1277 | ||
4ed0e075 | 1278 | /* |
26ac0430 | 1279 | * peerProbeConnect will be called on dead peers by neighborUp |
4ed0e075 | 1280 | */ |
cfd66529 | 1281 | static bool |
a3c6762c | 1282 | peerProbeConnect(CachePeer * p) |
e924600d | 1283 | { |
cfd66529 AJ |
1284 | time_t ctimeout = p->connect_timeout > 0 ? p->connect_timeout : Config.Timeout.peer_connect; |
1285 | bool ret = (squid_curtime - p->stats.last_connect_failure) > (ctimeout * 10); | |
62e76326 | 1286 | |
aed188fd | 1287 | if (p->testing_now > 0) |
4ed0e075 | 1288 | return ret;/* probe already running */ |
62e76326 | 1289 | |
4ed0e075 | 1290 | if (squid_curtime - p->stats.last_connect_probe == 0) |
1291 | return ret;/* don't probe to often */ | |
62e76326 | 1292 | |
a3c6762c | 1293 | /* for each IP address of this CachePeer. find one that we can connect to and probe it. */ |
5db6bf73 | 1294 | for (int i = 0; i < p->n_addresses; ++i) { |
f9b72e0c | 1295 | Comm::ConnectionPointer conn = new Comm::Connection; |
cfd66529 | 1296 | conn->remote = p->addresses[i]; |
4dd643d5 | 1297 | conn->remote.port(p->http_port); |
06c40c46 | 1298 | conn->setPeer(p); |
cfd66529 | 1299 | getOutgoingAddress(NULL, conn); |
cc192b50 | 1300 | |
5db6bf73 | 1301 | ++ p->testing_now; |
715b5def | 1302 | |
aed188fd | 1303 | AsyncCall::Pointer call = commCbCall(15,3, "peerProbeConnectDone", CommConnectCbPtrFun(peerProbeConnectDone, p)); |
4accd6d8 | 1304 | Comm::ConnOpener *cs = new Comm::ConnOpener(conn, call, ctimeout); |
aed188fd | 1305 | cs->setHost(p->host); |
855150a4 | 1306 | AsyncJob::Start(cs); |
715b5def AJ |
1307 | } |
1308 | ||
eb406bb7 | 1309 | p->stats.last_connect_probe = squid_curtime; |
62e76326 | 1310 | |
4ed0e075 | 1311 | return ret; |
e924600d | 1312 | } |
1313 | ||
1314 | static void | |
ced8def3 | 1315 | peerProbeConnectDone(const Comm::ConnectionPointer &conn, Comm::Flag status, int, void *data) |
e924600d | 1316 | { |
a3c6762c | 1317 | CachePeer *p = (CachePeer*)data; |
62e76326 | 1318 | |
c8407295 | 1319 | if (status == Comm::OK) { |
62e76326 | 1320 | peerConnectSucceded(p); |
e924600d | 1321 | } else { |
4ed0e075 | 1322 | peerConnectFailedSilent(p); |
e924600d | 1323 | } |
62e76326 | 1324 | |
5e263176 | 1325 | -- p->testing_now; |
db9bf30d AJ |
1326 | conn->close(); |
1327 | // TODO: log this traffic. | |
e924600d | 1328 | } |
1329 | ||
429fdbec | 1330 | static void |
a3c6762c | 1331 | peerCountMcastPeersSchedule(CachePeer * p, time_t when) |
429fdbec | 1332 | { |
b515fc11 | 1333 | if (p->mcast.flags.count_event_pending) |
62e76326 | 1334 | return; |
1335 | ||
429fdbec | 1336 | eventAdd("peerCountMcastPeersStart", |
62e76326 | 1337 | peerCountMcastPeersStart, |
1338 | p, | |
1339 | (double) when, 1); | |
1340 | ||
ccdf4138 | 1341 | p->mcast.flags.count_event_pending = true; |
429fdbec | 1342 | } |
1343 | ||
1344 | static void | |
1345 | peerCountMcastPeersStart(void *data) | |
1346 | { | |
a3c6762c | 1347 | CachePeer *p = (CachePeer *)data; |
28c60158 | 1348 | ps_state *psstate; |
429fdbec | 1349 | StoreEntry *fake; |
1350 | MemObject *mem; | |
1351 | icp_common_t *query; | |
007b8be4 | 1352 | int reqnum; |
429fdbec | 1353 | LOCAL_ARRAY(char, url, MAX_URL); |
ce66013b | 1354 | assert(p->type == PEER_MULTICAST); |
ccdf4138 | 1355 | p->mcast.flags.count_event_pending = false; |
cc192b50 | 1356 | snprintf(url, MAX_URL, "http://"); |
4dd643d5 | 1357 | p->in_addr.toUrl(url+7, MAX_URL -8 ); |
cc192b50 | 1358 | strcat(url, "/"); |
c2a7cefd | 1359 | fake = storeCreateEntry(url, url, RequestFlags(), Http::METHOD_GET); |
c21ad0f5 | 1360 | HttpRequest *req = HttpRequest::CreateFromUrl(url); |
b24880fe | 1361 | psstate = new ps_state; |
b248c2a3 AJ |
1362 | psstate->request = req; |
1363 | HTTPMSGLOCK(psstate->request); | |
429fdbec | 1364 | psstate->entry = fake; |
1365 | psstate->callback = NULL; | |
99117d82 | 1366 | psstate->callback_data = cbdataReference(p); |
b4e7f82d | 1367 | psstate->ping.start = current_time; |
429fdbec | 1368 | mem = fake->mem_obj; |
b248c2a3 AJ |
1369 | mem->request = psstate->request; |
1370 | HTTPMSGLOCK(mem->request); | |
429fdbec | 1371 | mem->start_ping = current_time; |
b4e7f82d | 1372 | mem->ping_reply_callback = peerCountHandleIcpReply; |
429fdbec | 1373 | mem->ircb_data = psstate; |
e0d28505 | 1374 | mcastSetTtl(icpOutgoingConn->fd, p->mcast.ttl); |
007b8be4 | 1375 | p->mcast.id = mem->id; |
332dafa2 | 1376 | reqnum = icpSetCacheKey((const cache_key *)fake->key); |
e6ccf245 | 1377 | query = _icp_common_t::createMessage(ICP_QUERY, 0, url, reqnum, 0); |
e0d28505 | 1378 | icpUdpSend(icpOutgoingConn->fd, p->in_addr, query, LOG_ICP_QUERY, 0); |
429fdbec | 1379 | fake->ping_status = PING_WAITING; |
1380 | eventAdd("peerCountMcastPeersDone", | |
62e76326 | 1381 | peerCountMcastPeersDone, |
1382 | psstate, | |
99117d82 | 1383 | Config.Timeout.mcast_icp_query / 1000.0, 1); |
ccdf4138 | 1384 | p->mcast.flags.counting = true; |
429fdbec | 1385 | peerCountMcastPeersSchedule(p, MCAST_COUNT_RATE); |
1386 | } | |
1387 | ||
1388 | static void | |
1389 | peerCountMcastPeersDone(void *data) | |
1390 | { | |
e6ccf245 | 1391 | ps_state *psstate = (ps_state *)data; |
429fdbec | 1392 | StoreEntry *fake = psstate->entry; |
99117d82 | 1393 | |
1394 | if (cbdataReferenceValid(psstate->callback_data)) { | |
a3c6762c | 1395 | CachePeer *p = (CachePeer *)psstate->callback_data; |
ccdf4138 | 1396 | p->mcast.flags.counting = false; |
a98bcbee | 1397 | p->mcast.avg_n_members = Math::doubleAverage(p->mcast.avg_n_members, (double) psstate->ping.n_recv, ++p->mcast.n_times_counted, 10); |
e0236918 | 1398 | debugs(15, DBG_IMPORTANT, "Group " << p->host << ": " << psstate->ping.n_recv << |
bf8fe701 | 1399 | " replies, "<< std::setw(4)<< std::setprecision(2) << |
1400 | p->mcast.avg_n_members <<" average, RTT " << p->stats.rtt); | |
99117d82 | 1401 | p->mcast.n_replies_expected = (int) p->mcast.avg_n_members; |
1402 | } | |
1403 | ||
1404 | cbdataReferenceDone(psstate->callback_data); | |
1405 | ||
bc52369a | 1406 | fake->abort(); // sets ENTRY_ABORTED and initiates releated cleanup |
6dd9f4bd | 1407 | HTTPMSGUNLOCK(fake->mem_obj->request); |
acc5dc4c | 1408 | fake->unlock("peerCountMcastPeersDone"); |
bd6e2f16 | 1409 | delete psstate; |
429fdbec | 1410 | } |
1411 | ||
1412 | static void | |
ced8def3 | 1413 | peerCountHandleIcpReply(CachePeer * p, peer_t, AnyP::ProtocolType proto, void *, void *data) |
429fdbec | 1414 | { |
e6ccf245 | 1415 | ps_state *psstate = (ps_state *)data; |
1a827bc0 | 1416 | StoreEntry *fake = psstate->entry; |
ced8def3 | 1417 | assert(fake); |
1a827bc0 | 1418 | MemObject *mem = fake->mem_obj; |
ced8def3 | 1419 | assert(mem); |
1a827bc0 | 1420 | int rtt = tvSubMsec(mem->start_ping, current_time); |
0c3d3f65 | 1421 | assert(proto == AnyP::PROTO_ICP); |
5db6bf73 | 1422 | ++ psstate->ping.n_recv; |
ced8def3 | 1423 | int rtt_av_factor = RTT_AV_FACTOR; |
62e76326 | 1424 | |
d1b63fc8 | 1425 | if (p->options.weighted_roundrobin) |
62e76326 | 1426 | rtt_av_factor = RTT_BACKGROUND_AV_FACTOR; |
1427 | ||
a98bcbee | 1428 | p->stats.rtt = Math::intAverage(p->stats.rtt, rtt, psstate->ping.n_recv, rtt_av_factor); |
429fdbec | 1429 | } |
ed7f5615 | 1430 | |
1431 | static void | |
1432 | neighborDumpPeers(StoreEntry * sentry) | |
1433 | { | |
1434 | dump_peers(sentry, Config.peers); | |
1435 | } | |
1436 | ||
1437 | static void | |
1438 | neighborDumpNonPeers(StoreEntry * sentry) | |
1439 | { | |
1440 | dump_peers(sentry, non_peers); | |
1441 | } | |
1442 | ||
a369131d | 1443 | void |
a3c6762c | 1444 | dump_peer_options(StoreEntry * sentry, CachePeer * p) |
a369131d | 1445 | { |
cd196bc8 | 1446 | if (p->options.proxy_only) |
62e76326 | 1447 | storeAppendPrintf(sentry, " proxy-only"); |
1448 | ||
cd196bc8 | 1449 | if (p->options.no_query) |
62e76326 | 1450 | storeAppendPrintf(sentry, " no-query"); |
1451 | ||
d1b63fc8 | 1452 | if (p->options.background_ping) |
62e76326 | 1453 | storeAppendPrintf(sentry, " background-ping"); |
1454 | ||
cd196bc8 | 1455 | if (p->options.no_digest) |
62e76326 | 1456 | storeAppendPrintf(sentry, " no-digest"); |
1457 | ||
cd196bc8 | 1458 | if (p->options.default_parent) |
62e76326 | 1459 | storeAppendPrintf(sentry, " default"); |
1460 | ||
cd196bc8 | 1461 | if (p->options.roundrobin) |
62e76326 | 1462 | storeAppendPrintf(sentry, " round-robin"); |
1463 | ||
f7e1d9ce HN |
1464 | if (p->options.carp) |
1465 | storeAppendPrintf(sentry, " carp"); | |
354b5a2b | 1466 | |
2f1431ea | 1467 | #if USE_AUTH |
f7e1d9ce HN |
1468 | if (p->options.userhash) |
1469 | storeAppendPrintf(sentry, " userhash"); | |
354b5a2b | 1470 | #endif |
f7e1d9ce | 1471 | |
354b5a2b | 1472 | if (p->options.sourcehash) |
f7e1d9ce | 1473 | storeAppendPrintf(sentry, " sourcehash"); |
354b5a2b | 1474 | |
d1b63fc8 | 1475 | if (p->options.weighted_roundrobin) |
62e76326 | 1476 | storeAppendPrintf(sentry, " weighted-round-robin"); |
1477 | ||
cd196bc8 | 1478 | if (p->options.mcast_responder) |
62e76326 | 1479 | storeAppendPrintf(sentry, " multicast-responder"); |
1480 | ||
8a368316 AJ |
1481 | #if PEER_MULTICAST_SIBLINGS |
1482 | if (p->options.mcast_siblings) | |
1483 | storeAppendPrintf(sentry, " multicast-siblings"); | |
1484 | #endif | |
1485 | ||
678a066c | 1486 | if (p->weight != 1) |
62e76326 | 1487 | storeAppendPrintf(sentry, " weight=%d", p->weight); |
1488 | ||
cd196bc8 | 1489 | if (p->options.closest_only) |
62e76326 | 1490 | storeAppendPrintf(sentry, " closest-only"); |
1491 | ||
dc9d133b | 1492 | #if USE_HTCP |
18191440 | 1493 | if (p->options.htcp) { |
62e76326 | 1494 | storeAppendPrintf(sentry, " htcp"); |
18191440 | 1495 | if (p->options.htcp_oldsquid || p->options.htcp_no_clr || p->options.htcp_no_purge_clr || p->options.htcp_only_clr) { |
4ac1880a FC |
1496 | bool doneopts = false; |
1497 | if (p->options.htcp_oldsquid) { | |
1498 | storeAppendPrintf(sentry, "oldsquid"); | |
1499 | doneopts = true; | |
1500 | } | |
1501 | if (p->options.htcp_no_clr) { | |
1502 | storeAppendPrintf(sentry, "%sno-clr",(doneopts?",":"=")); | |
1503 | doneopts = true; | |
1504 | } | |
1505 | if (p->options.htcp_no_purge_clr) { | |
1506 | storeAppendPrintf(sentry, "%sno-purge-clr",(doneopts?",":"=")); | |
1507 | doneopts = true; | |
1508 | } | |
1509 | if (p->options.htcp_only_clr) { | |
1510 | storeAppendPrintf(sentry, "%sonly-clr",(doneopts?",":"=")); | |
1511 | //doneopts = true; // uncomment if more opts are added | |
1512 | } | |
18191440 AJ |
1513 | } |
1514 | } | |
dc9d133b | 1515 | #endif |
62e76326 | 1516 | |
cd196bc8 | 1517 | if (p->options.no_netdb_exchange) |
62e76326 | 1518 | storeAppendPrintf(sentry, " no-netdb-exchange"); |
1519 | ||
9a0a18de | 1520 | #if USE_DELAY_POOLS |
cd196bc8 | 1521 | if (p->options.no_delay) |
62e76326 | 1522 | storeAppendPrintf(sentry, " no-delay"); |
95e36d02 | 1523 | #endif |
62e76326 | 1524 | |
c68e9c6b | 1525 | if (p->login) |
62e76326 | 1526 | storeAppendPrintf(sentry, " login=%s", p->login); |
1527 | ||
a369131d | 1528 | if (p->mcast.ttl > 0) |
62e76326 | 1529 | storeAppendPrintf(sentry, " ttl=%d", p->mcast.ttl); |
1530 | ||
be753325 | 1531 | if (p->connect_timeout > 0) |
62e76326 | 1532 | storeAppendPrintf(sentry, " connect-timeout=%d", (int) p->connect_timeout); |
1533 | ||
ff9970cc AJ |
1534 | if (p->connect_fail_limit != PEER_TCP_MAGIC_COUNT) |
1535 | storeAppendPrintf(sentry, " connect-fail-limit=%d", p->connect_fail_limit); | |
1536 | ||
be753325 | 1537 | #if USE_CACHE_DIGESTS |
62e76326 | 1538 | |
be753325 | 1539 | if (p->digest_url) |
62e76326 | 1540 | storeAppendPrintf(sentry, " digest-url=%s", p->digest_url); |
1541 | ||
be753325 | 1542 | #endif |
62e76326 | 1543 | |
be753325 | 1544 | if (p->options.allow_miss) |
62e76326 | 1545 | storeAppendPrintf(sentry, " allow-miss"); |
1546 | ||
b0758e04 AJ |
1547 | if (p->options.no_tproxy) |
1548 | storeAppendPrintf(sentry, " no-tproxy"); | |
1549 | ||
be753325 | 1550 | if (p->max_conn > 0) |
62e76326 | 1551 | storeAppendPrintf(sentry, " max-conn=%d", p->max_conn); |
e8dca475 CT |
1552 | if (p->standby.limit > 0) |
1553 | storeAppendPrintf(sentry, " standby=%d", p->standby.limit); | |
62e76326 | 1554 | |
be753325 | 1555 | if (p->options.originserver) |
62e76326 | 1556 | storeAppendPrintf(sentry, " originserver"); |
1557 | ||
be753325 | 1558 | if (p->domain) |
62e76326 | 1559 | storeAppendPrintf(sentry, " forceddomain=%s", p->domain); |
1560 | ||
26ac0430 AJ |
1561 | if (p->connection_auth == 0) |
1562 | storeAppendPrintf(sentry, " connection-auth=off"); | |
1563 | else if (p->connection_auth == 1) | |
1564 | storeAppendPrintf(sentry, " connection-auth=on"); | |
1565 | else if (p->connection_auth == 2) | |
1566 | storeAppendPrintf(sentry, " connection-auth=auto"); | |
d67acb4e | 1567 | |
8250ca31 | 1568 | p->secure.dumpCfg(sentry,"tls-"); |
a369131d | 1569 | storeAppendPrintf(sentry, "\n"); |
1570 | } | |
1571 | ||
ed7f5615 | 1572 | static void |
a3c6762c | 1573 | dump_peers(StoreEntry * sentry, CachePeer * peers) |
ed7f5615 | 1574 | { |
cc192b50 | 1575 | char ntoabuf[MAX_IPSTRLEN]; |
06e6d12a | 1576 | int i; |
62e76326 | 1577 | |
ed7f5615 | 1578 | if (peers == NULL) |
62e76326 | 1579 | storeAppendPrintf(sentry, "There are no neighbors installed.\n"); |
1580 | ||
f1a5d071 | 1581 | for (CachePeer *e = peers; e; e = e->next) { |
62e76326 | 1582 | assert(e->host != NULL); |
1583 | storeAppendPrintf(sentry, "\n%-11.11s: %s\n", | |
1584 | neighborTypeStr(e), | |
1585 | e->name); | |
1586 | storeAppendPrintf(sentry, "Host : %s/%d/%d\n", | |
1587 | e->host, | |
1588 | e->http_port, | |
1589 | e->icp.port); | |
1590 | storeAppendPrintf(sentry, "Flags :"); | |
1591 | dump_peer_options(sentry, e); | |
1592 | ||
5db6bf73 | 1593 | for (i = 0; i < e->n_addresses; ++i) { |
62e76326 | 1594 | storeAppendPrintf(sentry, "Address[%d] : %s\n", i, |
4dd643d5 | 1595 | e->addresses[i].toStr(ntoabuf,MAX_IPSTRLEN) ); |
62e76326 | 1596 | } |
1597 | ||
1598 | storeAppendPrintf(sentry, "Status : %s\n", | |
1599 | neighborUp(e) ? "Up" : "Down"); | |
1600 | storeAppendPrintf(sentry, "FETCHES : %d\n", e->stats.fetches); | |
1601 | storeAppendPrintf(sentry, "OPEN CONNS : %d\n", e->stats.conn_open); | |
1602 | storeAppendPrintf(sentry, "AVG RTT : %d msec\n", e->stats.rtt); | |
1603 | ||
1604 | if (!e->options.no_query) { | |
1605 | storeAppendPrintf(sentry, "LAST QUERY : %8d seconds ago\n", | |
1606 | (int) (squid_curtime - e->stats.last_query)); | |
1607 | ||
1608 | if (e->stats.last_reply > 0) | |
1609 | storeAppendPrintf(sentry, "LAST REPLY : %8d seconds ago\n", | |
1610 | (int) (squid_curtime - e->stats.last_reply)); | |
1611 | else | |
1612 | storeAppendPrintf(sentry, "LAST REPLY : none received\n"); | |
1613 | ||
1614 | storeAppendPrintf(sentry, "PINGS SENT : %8d\n", e->stats.pings_sent); | |
1615 | ||
1616 | storeAppendPrintf(sentry, "PINGS ACKED: %8d %3d%%\n", | |
1617 | e->stats.pings_acked, | |
a98bcbee | 1618 | Math::intPercent(e->stats.pings_acked, e->stats.pings_sent)); |
62e76326 | 1619 | } |
1620 | ||
a98bcbee | 1621 | storeAppendPrintf(sentry, "IGNORED : %8d %3d%%\n", e->stats.ignored_replies, Math::intPercent(e->stats.ignored_replies, e->stats.pings_acked)); |
62e76326 | 1622 | |
1623 | if (!e->options.no_query) { | |
1624 | storeAppendPrintf(sentry, "Histogram of PINGS ACKED:\n"); | |
1994bb24 | 1625 | #if USE_HTCP |
62e76326 | 1626 | |
1627 | if (e->options.htcp) { | |
1628 | storeAppendPrintf(sentry, "\tMisses\t%8d %3d%%\n", | |
1629 | e->htcp.counts[0], | |
a98bcbee | 1630 | Math::intPercent(e->htcp.counts[0], e->stats.pings_acked)); |
62e76326 | 1631 | storeAppendPrintf(sentry, "\tHits\t%8d %3d%%\n", |
1632 | e->htcp.counts[1], | |
a98bcbee | 1633 | Math::intPercent(e->htcp.counts[1], e->stats.pings_acked)); |
62e76326 | 1634 | } else { |
1994bb24 | 1635 | #endif |
62e76326 | 1636 | |
2fefc43c | 1637 | for (auto op : WholeEnum<icp_opcode>()) { |
62e76326 | 1638 | if (e->icp.counts[op] == 0) |
1639 | continue; | |
1640 | ||
1641 | storeAppendPrintf(sentry, " %12.12s : %8d %3d%%\n", | |
1642 | icp_opcode_str[op], | |
1643 | e->icp.counts[op], | |
a98bcbee | 1644 | Math::intPercent(e->icp.counts[op], e->stats.pings_acked)); |
62e76326 | 1645 | } |
1646 | ||
1994bb24 | 1647 | #if USE_HTCP |
62e76326 | 1648 | |
1649 | } | |
1650 | ||
1994bb24 | 1651 | #endif |
62e76326 | 1652 | |
1653 | } | |
1654 | ||
1655 | if (e->stats.last_connect_failure) { | |
1656 | storeAppendPrintf(sentry, "Last failed connect() at: %s\n", | |
20efa1c2 | 1657 | Time::FormatHttpd(e->stats.last_connect_failure)); |
62e76326 | 1658 | } |
1659 | ||
a98bcbee | 1660 | storeAppendPrintf(sentry, "keep-alive ratio: %d%%\n", Math::intPercent(e->stats.n_keepalives_recv, e->stats.n_keepalives_sent)); |
ed7f5615 | 1661 | } |
1662 | } | |
86aebcda | 1663 | |
1664 | #if USE_HTCP | |
1665 | void | |
fad2588a | 1666 | neighborsHtcpReply(const cache_key * key, HtcpReplyData * htcp, const Ip::Address &from) |
86aebcda | 1667 | { |
53525d53 | 1668 | StoreEntry *e = Store::Root().get(key); |
399cabec | 1669 | MemObject *mem = NULL; |
a3c6762c | 1670 | CachePeer *p; |
399cabec | 1671 | peer_t ntype = PEER_NONE; |
26ac0430 AJ |
1672 | debugs(15, 6, "neighborsHtcpReply: " << |
1673 | (htcp->hit ? "HIT" : "MISS") << " " << | |
1674 | storeKeyText(key) ); | |
62e76326 | 1675 | |
88e13392 | 1676 | if (NULL != e) |
62e76326 | 1677 | mem = e->mem_obj; |
1678 | ||
399cabec | 1679 | if ((p = whichPeer(from))) |
62e76326 | 1680 | neighborAliveHtcp(p, mem, htcp); |
1681 | ||
399cabec | 1682 | /* Does the entry exist? */ |
26ac0430 | 1683 | if (NULL == e) { |
bf8fe701 | 1684 | debugs(12, 3, "neighyborsHtcpReply: Cache key '" << storeKeyText(key) << "' not found"); |
62e76326 | 1685 | neighborCountIgnored(p); |
1686 | return; | |
399cabec | 1687 | } |
62e76326 | 1688 | |
399cabec | 1689 | /* check if someone is already fetching it */ |
26ac0430 | 1690 | if (EBIT_TEST(e->flags, ENTRY_DISPATCHED)) { |
bf8fe701 | 1691 | debugs(15, 3, "neighborsUdpAck: '" << storeKeyText(key) << "' already being fetched."); |
62e76326 | 1692 | neighborCountIgnored(p); |
1693 | return; | |
399cabec | 1694 | } |
62e76326 | 1695 | |
26ac0430 | 1696 | if (mem == NULL) { |
bf8fe701 | 1697 | debugs(15, 2, "Ignoring reply for missing mem_obj: " << storeKeyText(key)); |
62e76326 | 1698 | neighborCountIgnored(p); |
1699 | return; | |
399cabec | 1700 | } |
62e76326 | 1701 | |
26ac0430 | 1702 | if (e->ping_status != PING_WAITING) { |
bf8fe701 | 1703 | debugs(15, 2, "neighborsUdpAck: Entry " << storeKeyText(key) << " is not PING_WAITING"); |
62e76326 | 1704 | neighborCountIgnored(p); |
1705 | return; | |
399cabec | 1706 | } |
62e76326 | 1707 | |
1bfe9ade | 1708 | if (!e->locked()) { |
5bd484b5 | 1709 | // TODO: many entries are unlocked; why is this reported at level 1? |
e0236918 | 1710 | debugs(12, DBG_IMPORTANT, "neighborsUdpAck: '" << storeKeyText(key) << "' has no locks"); |
62e76326 | 1711 | neighborCountIgnored(p); |
1712 | return; | |
399cabec | 1713 | } |
62e76326 | 1714 | |
26ac0430 | 1715 | if (p) { |
5c51bffb | 1716 | ntype = neighborType(p, mem->request->url); |
62e76326 | 1717 | neighborUpdateRtt(p, mem); |
44f2f2e4 | 1718 | } |
62e76326 | 1719 | |
26ac0430 | 1720 | if (ignoreMulticastReply(p, mem)) { |
62e76326 | 1721 | neighborCountIgnored(p); |
1722 | return; | |
399cabec | 1723 | } |
62e76326 | 1724 | |
bf8fe701 | 1725 | debugs(15, 3, "neighborsHtcpReply: e = " << e); |
0c3d3f65 | 1726 | mem->ping_reply_callback(p, ntype, AnyP::PROTO_HTCP, htcp, mem->ircb_data); |
86aebcda | 1727 | } |
62e76326 | 1728 | |
1bd06eff BR |
1729 | /* |
1730 | * Send HTCP CLR messages to all peers configured to receive them. | |
1731 | */ | |
4f4fa815 | 1732 | void |
8dceeee3 | 1733 | neighborsHtcpClear(StoreEntry * e, const char *uri, HttpRequest * req, const HttpRequestMethod &method, htcp_clr_reason reason) |
4f4fa815 | 1734 | { |
a3c6762c | 1735 | CachePeer *p; |
4f4fa815 BR |
1736 | char buf[128]; |
1737 | ||
4f4fa815 BR |
1738 | for (p = Config.peers; p; p = p->next) { |
1739 | if (!p->options.htcp) { | |
1740 | continue; | |
1741 | } | |
1742 | if (p->options.htcp_no_clr) { | |
1743 | continue; | |
1744 | } | |
1745 | if (p->options.htcp_no_purge_clr && reason == HTCP_CLR_PURGE) { | |
1746 | continue; | |
1747 | } | |
4dd643d5 | 1748 | debugs(15, 3, "neighborsHtcpClear: sending CLR to " << p->in_addr.toUrl(buf, 128)); |
4f4fa815 BR |
1749 | htcpClear(e, uri, req, method, p, reason); |
1750 | } | |
1751 | } | |
1752 | ||
86aebcda | 1753 | #endif |
f53969cc | 1754 |