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22f3fd98 | 1 | |
30a4f2a8 | 2 | /* |
e429f975 | 3 | * $Id: neighbors.cc,v 1.308 2002/10/25 07:36:32 robertc Exp $ |
30a4f2a8 | 4 | * |
5 | * DEBUG: section 15 Neighbor Routines | |
6 | * AUTHOR: Harvest Derived | |
7 | * | |
2b6662ba | 8 | * SQUID Web Proxy Cache http://www.squid-cache.org/ |
e25c139f | 9 | * ---------------------------------------------------------- |
30a4f2a8 | 10 | * |
2b6662ba | 11 | * Squid is the result of efforts by numerous individuals from |
12 | * the Internet community; see the CONTRIBUTORS file for full | |
13 | * details. Many organizations have provided support for Squid's | |
14 | * development; see the SPONSORS file for full details. Squid is | |
15 | * Copyrighted (C) 2001 by the Regents of the University of | |
16 | * California; see the COPYRIGHT file for full details. Squid | |
17 | * incorporates software developed and/or copyrighted by other | |
18 | * sources; see the CREDITS file for full details. | |
30a4f2a8 | 19 | * |
20 | * This program is free software; you can redistribute it and/or modify | |
21 | * it under the terms of the GNU General Public License as published by | |
22 | * the Free Software Foundation; either version 2 of the License, or | |
23 | * (at your option) any later version. | |
24 | * | |
25 | * This program is distributed in the hope that it will be useful, | |
26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
28 | * GNU General Public License for more details. | |
29 | * | |
30 | * You should have received a copy of the GNU General Public License | |
31 | * along with this program; if not, write to the Free Software | |
cbdec147 | 32 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
e25c139f | 33 | * |
019dd986 | 34 | */ |
090089c4 | 35 | |
44a47c6e | 36 | #include "squid.h" |
e6ccf245 | 37 | #include "Store.h" |
38 | #include "ICP.h" | |
090089c4 | 39 | |
429fdbec | 40 | /* count mcast group peers every 15 minutes */ |
41 | #define MCAST_COUNT_RATE 900 | |
42 | ||
f5b8bbc4 | 43 | static int peerAllowedToUse(const peer *, request_t *); |
f5b8bbc4 | 44 | static int peerWouldBePinged(const peer *, request_t *); |
45 | static void neighborRemove(peer *); | |
f5b8bbc4 | 46 | static void neighborAlive(peer *, const MemObject *, const icp_common_t *); |
399cabec | 47 | #if USE_HTCP |
48 | static void neighborAliveHtcp(peer *, const MemObject *, const htcpReplyData *); | |
49 | #endif | |
56b62ecc | 50 | static void neighborCountIgnored(peer *); |
f5b8bbc4 | 51 | static void peerRefreshDNS(void *); |
b69f7771 | 52 | static IPH peerDNSConfigure; |
eb406bb7 | 53 | static void peerProbeConnect(peer *); |
54 | static IPH peerProbeConnect2; | |
55 | static CNCB peerProbeConnectDone; | |
f5b8bbc4 | 56 | static void peerCountMcastPeersDone(void *data); |
57 | static void peerCountMcastPeersStart(void *data); | |
58 | static void peerCountMcastPeersSchedule(peer * p, time_t when); | |
b3264694 | 59 | static IRCB peerCountHandleIcpReply; |
f5b8bbc4 | 60 | static void neighborIgnoreNonPeer(const struct sockaddr_in *, icp_opcode); |
ed7f5615 | 61 | static OBJH neighborDumpPeers; |
62 | static OBJH neighborDumpNonPeers; | |
63 | static void dump_peers(StoreEntry * sentry, peer * peers); | |
090089c4 | 64 | |
090089c4 | 65 | static icp_common_t echo_hdr; |
30a4f2a8 | 66 | static u_short echo_port; |
30a4f2a8 | 67 | |
c7a3724d | 68 | static int NLateReplies = 0; |
40a1495e | 69 | static peer *first_ping = NULL; |
28070024 | 70 | |
a2c963ae | 71 | const char * |
b69f7771 | 72 | neighborTypeStr(const peer * p) |
69a71bd7 | 73 | { |
e102ebda | 74 | if (p->type == PEER_NONE) |
75 | return "Non-Peer"; | |
b69f7771 | 76 | if (p->type == PEER_SIBLING) |
69a71bd7 | 77 | return "Sibling"; |
b69f7771 | 78 | if (p->type == PEER_MULTICAST) |
7b3bd12c | 79 | return "Multicast Group"; |
69a71bd7 | 80 | return "Parent"; |
81 | } | |
82 | ||
090089c4 | 83 | |
d9f9d78b | 84 | peer * |
0cdcddb9 | 85 | whichPeer(const struct sockaddr_in * from) |
090089c4 | 86 | { |
22e4fa85 | 87 | int j; |
4eda6afe | 88 | u_short port = ntohs(from->sin_port); |
89 | struct in_addr ip = from->sin_addr; | |
b69f7771 | 90 | peer *p = NULL; |
a3d5953d | 91 | debug(15, 3) ("whichPeer: from %s port %d\n", inet_ntoa(ip), port); |
40a1495e | 92 | for (p = Config.peers; p; p = p->next) { |
b69f7771 | 93 | for (j = 0; j < p->n_addresses; j++) { |
399cabec | 94 | if (ip.s_addr == p->addresses[j].s_addr && port == p->icp.port) { |
b69f7771 | 95 | return p; |
090089c4 | 96 | } |
97 | } | |
98 | } | |
4eda6afe | 99 | return NULL; |
090089c4 | 100 | } |
101 | ||
701a8572 | 102 | peer_t |
b69f7771 | 103 | neighborType(const peer * p, const request_t * request) |
24a1003d | 104 | { |
b012353a | 105 | const struct _domain_type *d = NULL; |
b69f7771 | 106 | for (d = p->typelist; d; d = d->next) { |
7e3ce7b9 | 107 | if (0 == matchDomainName(request->host, d->domain)) |
deb79f06 | 108 | if (d->type != PEER_NONE) |
b012353a | 109 | return d->type; |
24a1003d | 110 | } |
b69f7771 | 111 | return p->type; |
24a1003d | 112 | } |
113 | ||
7b3bd12c | 114 | /* |
62fd6124 | 115 | * peerAllowedToUse |
7b3bd12c | 116 | * |
dd4bd44e | 117 | * this function figures out if it is appropriate to fetch REQUEST |
62fd6124 | 118 | * from PEER. |
7b3bd12c | 119 | */ |
b8d8561b | 120 | static int |
b69f7771 | 121 | peerAllowedToUse(const peer * p, request_t * request) |
090089c4 | 122 | { |
b012353a | 123 | const struct _domain_ping *d = NULL; |
090089c4 | 124 | int do_ping = 1; |
f88bb09c | 125 | aclCheck_t checklist; |
ce66013b | 126 | assert(request != NULL); |
9689d97c | 127 | if (neighborType(p, request) == PEER_SIBLING) { |
128 | if (request->flags.nocache) | |
24a1003d | 129 | return 0; |
9689d97c | 130 | if (request->flags.refresh) |
d950cec8 | 131 | return 0; |
9689d97c | 132 | if (request->flags.loopdetect) |
133 | return 0; | |
134 | if (request->flags.need_validation) | |
135 | return 0; | |
136 | } | |
b6a2f15e | 137 | if (p->peer_domain == NULL && p->access == NULL) |
090089c4 | 138 | return do_ping; |
090089c4 | 139 | do_ping = 0; |
b6a2f15e | 140 | for (d = p->peer_domain; d; d = d->next) { |
7e3ce7b9 | 141 | if (0 == matchDomainName(request->host, d->domain)) { |
130faaed | 142 | do_ping = d->do_ping; |
143 | break; | |
144 | } | |
30a4f2a8 | 145 | do_ping = !d->do_ping; |
146 | } | |
b6a2f15e | 147 | if (p->peer_domain && 0 == do_ping) |
130faaed | 148 | return do_ping; |
505e35db | 149 | if (p->access == NULL) |
150 | return do_ping; | |
d20b1cd0 | 151 | memset(&checklist, '\0', sizeof(checklist)); |
8ae8bb05 | 152 | checklist.src_addr = request->client_addr; |
3c11d1f5 | 153 | checklist.my_addr = request->my_addr; |
7e3ce7b9 | 154 | checklist.my_port = request->my_port; |
f88bb09c | 155 | checklist.request = request; |
4749aee5 | 156 | #if 0 && USE_IDENT |
157 | /* | |
158 | * this is currently broken because 'request->user_ident' has been | |
159 | * moved to conn->rfc931 and we don't have access to the parent | |
160 | * ConnStateData here. | |
161 | */ | |
94e7025e | 162 | if (request->user_ident[0]) |
4749aee5 | 163 | xstrncpy(checklist.rfc931, request->user_ident, USER_IDENT_SZ); |
94e7025e | 164 | #endif |
505e35db | 165 | return aclCheckFast(p->access, &checklist); |
090089c4 | 166 | } |
167 | ||
62fd6124 | 168 | /* Return TRUE if it is okay to send an ICP request to this peer. */ |
169 | static int | |
b69f7771 | 170 | peerWouldBePinged(const peer * p, request_t * request) |
62fd6124 | 171 | { |
b69f7771 | 172 | if (!peerAllowedToUse(p, request)) |
62fd6124 | 173 | return 0; |
cd196bc8 | 174 | if (p->options.no_query) |
62fd6124 | 175 | return 0; |
d1b63fc8 | 176 | if (p->options.background_ping && (squid_curtime - p->stats.last_query < Config.backgroundPingRate)) |
177 | return 0; | |
cd196bc8 | 178 | if (p->options.mcast_responder) |
62fd6124 | 179 | return 0; |
83b381d5 | 180 | if (p->n_addresses == 0) |
181 | return 0; | |
0e614a06 | 182 | if (p->icp.port == 0) |
183 | return 0; | |
62fd6124 | 184 | /* the case below seems strange, but can happen if the |
185 | * URL host is on the other side of a firewall */ | |
b69f7771 | 186 | if (p->type == PEER_SIBLING) |
92695e5e | 187 | if (!request->flags.hierarchical) |
62fd6124 | 188 | return 0; |
83b381d5 | 189 | /* Ping dead peers every timeout interval */ |
190 | if (squid_curtime - p->stats.last_query > Config.Timeout.deadPeer) | |
191 | return 1; | |
d1b63fc8 | 192 | if (p->icp.port == echo_port) |
193 | if (!neighborUp(p)) | |
194 | return 0; | |
62fd6124 | 195 | return 1; |
196 | } | |
197 | ||
198 | /* Return TRUE if it is okay to send an HTTP request to this peer. */ | |
8ff4505b | 199 | int |
b69f7771 | 200 | peerHTTPOkay(const peer * p, request_t * request) |
62fd6124 | 201 | { |
b69f7771 | 202 | if (!peerAllowedToUse(p, request)) |
62fd6124 | 203 | return 0; |
b69f7771 | 204 | if (!neighborUp(p)) |
62fd6124 | 205 | return 0; |
c7f9eb6d | 206 | if (p->max_conn) |
207 | if (p->stats.conn_open >= p->max_conn) | |
208 | return 0; | |
62fd6124 | 209 | return 1; |
210 | } | |
211 | ||
3c6e634f | 212 | int |
213 | neighborsCount(request_t * request) | |
090089c4 | 214 | { |
b69f7771 | 215 | peer *p = NULL; |
090089c4 | 216 | int count = 0; |
40a1495e | 217 | for (p = Config.peers; p; p = p->next) |
b69f7771 | 218 | if (peerWouldBePinged(p, request)) |
3c6e634f | 219 | count++; |
a3d5953d | 220 | debug(15, 3) ("neighborsCount: %d\n", count); |
3c6e634f | 221 | return count; |
222 | } | |
090089c4 | 223 | |
002245f2 | 224 | #if UNUSED_CODE |
deb79f06 | 225 | peer * |
3c6e634f | 226 | getSingleParent(request_t * request) |
227 | { | |
deb79f06 | 228 | peer *p = NULL; |
b69f7771 | 229 | peer *q = NULL; |
40a1495e | 230 | for (q = Config.peers; q; q = q->next) { |
b69f7771 | 231 | if (!peerHTTPOkay(q, request)) |
caebbe00 | 232 | continue; |
b69f7771 | 233 | if (neighborType(q, request) != PEER_PARENT) |
3c6e634f | 234 | return NULL; /* oops, found SIBLING */ |
235 | if (p) | |
236 | return NULL; /* oops, found second parent */ | |
b69f7771 | 237 | p = q; |
090089c4 | 238 | } |
cd196bc8 | 239 | if (p != NULL && !p->options.no_query) |
a369131d | 240 | return NULL; |
a3d5953d | 241 | debug(15, 3) ("getSingleParent: returning %s\n", p ? p->host : "NULL"); |
3c6e634f | 242 | return p; |
090089c4 | 243 | } |
002245f2 | 244 | #endif |
090089c4 | 245 | |
deb79f06 | 246 | peer * |
b8d8561b | 247 | getFirstUpParent(request_t * request) |
090089c4 | 248 | { |
b69f7771 | 249 | peer *p = NULL; |
40a1495e | 250 | for (p = Config.peers; p; p = p->next) { |
b69f7771 | 251 | if (!neighborUp(p)) |
30a4f2a8 | 252 | continue; |
b69f7771 | 253 | if (neighborType(p, request) != PEER_PARENT) |
090089c4 | 254 | continue; |
b69f7771 | 255 | if (!peerHTTPOkay(p, request)) |
e924600d | 256 | continue; |
257 | break; | |
090089c4 | 258 | } |
a3d5953d | 259 | debug(15, 3) ("getFirstUpParent: returning %s\n", p ? p->host : "NULL"); |
b69f7771 | 260 | return p; |
090089c4 | 261 | } |
262 | ||
deb79f06 | 263 | peer * |
48b38d01 | 264 | getRoundRobinParent(request_t * request) |
265 | { | |
b69f7771 | 266 | peer *p; |
267 | peer *q = NULL; | |
40a1495e | 268 | for (p = Config.peers; p; p = p->next) { |
cd196bc8 | 269 | if (!p->options.roundrobin) |
0c8177e6 | 270 | continue; |
b69f7771 | 271 | if (neighborType(p, request) != PEER_PARENT) |
0c8177e6 | 272 | continue; |
b69f7771 | 273 | if (!peerHTTPOkay(p, request)) |
48b38d01 | 274 | continue; |
b69f7771 | 275 | if (q && q->rr_count < p->rr_count) |
48b38d01 | 276 | continue; |
b69f7771 | 277 | q = p; |
48b38d01 | 278 | } |
b69f7771 | 279 | if (q) |
280 | q->rr_count++; | |
a3d5953d | 281 | debug(15, 3) ("getRoundRobinParent: returning %s\n", q ? q->host : "NULL"); |
b69f7771 | 282 | return q; |
48b38d01 | 283 | } |
284 | ||
d1b63fc8 | 285 | peer * |
286 | getWeightedRoundRobinParent(request_t * request) | |
287 | { | |
288 | peer *p; | |
289 | peer *q = NULL; | |
290 | int weighted_rtt; | |
291 | for (p = Config.peers; p; p = p->next) { | |
292 | if (!p->options.weighted_roundrobin) | |
293 | continue; | |
294 | if (neighborType(p, request) != PEER_PARENT) | |
295 | continue; | |
296 | if (!peerHTTPOkay(p, request)) | |
297 | continue; | |
298 | if (q && q->rr_count < p->rr_count) | |
299 | continue; | |
300 | q = p; | |
301 | } | |
302 | if (q && q->rr_count > 1000000) | |
303 | for (p = Config.peers; p; p = p->next) { | |
304 | if (!p->options.weighted_roundrobin) | |
305 | continue; | |
306 | if (neighborType(p, request) != PEER_PARENT) | |
307 | continue; | |
308 | p->rr_count = 0; | |
309 | } | |
310 | if (q) { | |
311 | weighted_rtt = (q->stats.rtt - q->basetime) / q->weight; | |
312 | ||
313 | if (weighted_rtt < 1) | |
314 | weighted_rtt = 1; | |
315 | q->rr_count += weighted_rtt; | |
316 | debug(15, 3) ("getWeightedRoundRobinParent: weighted_rtt %d\n", (int) weighted_rtt); | |
317 | } | |
318 | debug(15, 3) ("getWeightedRoundRobinParent: returning %s\n", q ? q->host : "NULL"); | |
319 | return q; | |
320 | } | |
321 | ||
82056f1e | 322 | /* This gets called every 5 minutes to clear the round-robin counter. */ |
323 | void | |
324 | peerClearRR(void *data) | |
325 | { | |
e6ccf245 | 326 | peer *p = (peer *)data; |
82056f1e | 327 | p->rr_count -= p->rr_lastcount; |
328 | if (p->rr_count < 0) | |
329 | p->rr_count = 0; | |
330 | p->rr_lastcount = p->rr_count; | |
44a5f25e | 331 | eventAdd("peerClearRR", peerClearRR, p, 5 * 60.0, 0); |
82056f1e | 332 | } |
333 | ||
deb79f06 | 334 | peer * |
5269d0bd | 335 | getDefaultParent(request_t * request) |
336 | { | |
b69f7771 | 337 | peer *p = NULL; |
40a1495e | 338 | for (p = Config.peers; p; p = p->next) { |
b69f7771 | 339 | if (neighborType(p, request) != PEER_PARENT) |
5269d0bd | 340 | continue; |
cd196bc8 | 341 | if (!p->options.default_parent) |
5269d0bd | 342 | continue; |
b69f7771 | 343 | if (!peerHTTPOkay(p, request)) |
5269d0bd | 344 | continue; |
a3d5953d | 345 | debug(15, 3) ("getDefaultParent: returning %s\n", p->host); |
b69f7771 | 346 | return p; |
5269d0bd | 347 | } |
669fefd4 | 348 | debug(15, 3) ("getDefaultParent: returning NULL\n"); |
5269d0bd | 349 | return NULL; |
350 | } | |
351 | ||
3c50f9bd | 352 | /* |
353 | * XXX DW thinks this function is equivalent to/redundant with | |
354 | * getFirstUpParent(). peerHTTPOkay() only returns true if the | |
355 | * peer is UP anyway, so this function would not return a | |
356 | * DOWN parent. | |
357 | */ | |
6a655df0 | 358 | peer * |
359 | getAnyParent(request_t * request) | |
360 | { | |
361 | peer *p = NULL; | |
362 | for (p = Config.peers; p; p = p->next) { | |
363 | if (neighborType(p, request) != PEER_PARENT) | |
364 | continue; | |
365 | if (!peerHTTPOkay(p, request)) | |
366 | continue; | |
367 | debug(15, 3) ("getAnyParent: returning %s\n", p->host); | |
368 | return p; | |
369 | } | |
370 | debug(15, 3) ("getAnyParent: returning NULL\n"); | |
371 | return NULL; | |
372 | } | |
373 | ||
deb79f06 | 374 | peer * |
b69f7771 | 375 | getNextPeer(peer * p) |
090089c4 | 376 | { |
b69f7771 | 377 | return p->next; |
090089c4 | 378 | } |
379 | ||
deb79f06 | 380 | peer * |
381 | getFirstPeer(void) | |
090089c4 | 382 | { |
40a1495e | 383 | return Config.peers; |
090089c4 | 384 | } |
385 | ||
b8d8561b | 386 | static void |
deb79f06 | 387 | neighborRemove(peer * target) |
30a4f2a8 | 388 | { |
b69f7771 | 389 | peer *p = NULL; |
390 | peer **P = NULL; | |
40a1495e | 391 | p = Config.peers; |
392 | P = &Config.peers; | |
b69f7771 | 393 | while (p) { |
394 | if (target == p) | |
30a4f2a8 | 395 | break; |
b69f7771 | 396 | P = &p->next; |
397 | p = p->next; | |
398 | } | |
399 | if (p) { | |
400 | *P = p->next; | |
b6a2f15e | 401 | cbdataFree(p); |
40a1495e | 402 | Config.npeers--; |
4d64d74a | 403 | } |
40a1495e | 404 | first_ping = Config.peers; |
4d64d74a | 405 | } |
406 | ||
b8d8561b | 407 | void |
408 | neighbors_open(int fd) | |
090089c4 | 409 | { |
30a4f2a8 | 410 | struct sockaddr_in name; |
6637e3a5 | 411 | socklen_t len = sizeof(struct sockaddr_in); |
30a4f2a8 | 412 | struct servent *sep = NULL; |
b263bd3f | 413 | const char *me = getMyHostname(); |
e6ccf245 | 414 | peer *thisPeer; |
b263bd3f | 415 | peer *next; |
30a4f2a8 | 416 | memset(&name, '\0', sizeof(struct sockaddr_in)); |
417 | if (getsockname(fd, (struct sockaddr *) &name, &len) < 0) | |
a3d5953d | 418 | debug(15, 1) ("getsockname(%d,%p,%p) failed.\n", fd, &name, &len); |
e6ccf245 | 419 | for (thisPeer = Config.peers; thisPeer; thisPeer = next) { |
b263bd3f | 420 | sockaddr_in_list *s; |
e6ccf245 | 421 | next = thisPeer->next; |
422 | if (0 != strcmp(thisPeer->host, me)) | |
b263bd3f | 423 | continue; |
424 | for (s = Config.Sockaddr.http; s; s = s->next) { | |
e6ccf245 | 425 | if (thisPeer->http_port != ntohs(s->s.sin_port)) |
b263bd3f | 426 | continue; |
427 | debug(15, 1) ("WARNING: Peer looks like this host\n"); | |
428 | debug(15, 1) (" Ignoring %s %s/%d/%d\n", | |
e6ccf245 | 429 | neighborTypeStr(thisPeer), thisPeer->host, thisPeer->http_port, |
430 | thisPeer->icp.port); | |
431 | neighborRemove(thisPeer); | |
b263bd3f | 432 | } |
433 | } | |
434 | ||
5999b776 | 435 | peerRefreshDNS((void *) 1); |
e6ccf245 | 436 | if (ICP_INVALID == echo_hdr.opcode) { |
27cd7235 | 437 | echo_hdr.opcode = ICP_SECHO; |
30a4f2a8 | 438 | echo_hdr.version = ICP_VERSION_CURRENT; |
439 | echo_hdr.length = 0; | |
440 | echo_hdr.reqnum = 0; | |
441 | echo_hdr.flags = 0; | |
442 | echo_hdr.pad = 0; | |
30a4f2a8 | 443 | echo_hdr.shostid = name.sin_addr.s_addr; |
444 | sep = getservbyname("echo", "udp"); | |
445 | echo_port = sep ? ntohs((u_short) sep->s_port) : 7; | |
090089c4 | 446 | } |
c68e4e90 | 447 | first_ping = Config.peers; |
ed7f5615 | 448 | cachemgrRegister("server_list", |
449 | "Peer Cache Statistics", | |
1da3b90b | 450 | neighborDumpPeers, 0, 1); |
22f3fd98 | 451 | cachemgrRegister("non_peers", |
452 | "List of Unknown sites sending ICP messages", | |
1da3b90b | 453 | neighborDumpNonPeers, 0, 1); |
090089c4 | 454 | } |
455 | ||
b8d8561b | 456 | int |
b6c0e933 | 457 | neighborsUdpPing(request_t * request, |
641941c0 | 458 | StoreEntry * entry, |
582b6456 | 459 | IRCB * callback, |
641941c0 | 460 | void *callback_data, |
52040193 | 461 | int *exprep, |
465dc415 | 462 | int *timeout) |
090089c4 | 463 | { |
9fb13bb6 | 464 | const char *url = storeUrl(entry); |
b6c0e933 | 465 | MemObject *mem = entry->mem_obj; |
b69f7771 | 466 | peer *p = NULL; |
090089c4 | 467 | int i; |
1061b406 | 468 | int reqnum = 0; |
6d2296d4 | 469 | int flags; |
9dee2904 | 470 | icp_common_t *query; |
429fdbec | 471 | int queries_sent = 0; |
0a0bf5db | 472 | int peers_pinged = 0; |
a8c926ff | 473 | int parent_timeout = 0, parent_exprep = 0; |
474 | int sibling_timeout = 0, sibling_exprep = 0; | |
090089c4 | 475 | |
40a1495e | 476 | if (Config.peers == NULL) |
090089c4 | 477 | return 0; |
ce66013b | 478 | if (theOutIcpConnection < 0) |
479 | fatal("neighborsUdpPing: There is no ICP socket!"); | |
9fb13bb6 | 480 | assert(entry->swap_status == SWAPOUT_NONE); |
b6c0e933 | 481 | mem->start_ping = current_time; |
b4e7f82d | 482 | mem->ping_reply_callback = callback; |
b6c0e933 | 483 | mem->ircb_data = callback_data; |
332dafa2 | 484 | reqnum = icpSetCacheKey((const cache_key *)entry->key); |
40a1495e | 485 | for (i = 0, p = first_ping; i++ < Config.npeers; p = p->next) { |
b69f7771 | 486 | if (p == NULL) |
40a1495e | 487 | p = Config.peers; |
a3d5953d | 488 | debug(15, 5) ("neighborsUdpPing: Peer %s\n", p->host); |
b69f7771 | 489 | if (!peerWouldBePinged(p, request)) |
deb79f06 | 490 | continue; /* next peer */ |
0a0bf5db | 491 | peers_pinged++; |
a3d5953d | 492 | debug(15, 4) ("neighborsUdpPing: pinging peer %s for '%s'\n", |
b69f7771 | 493 | p->host, url); |
494 | if (p->type == PEER_MULTICAST) | |
03a1ee42 | 495 | mcastSetTtl(theOutIcpConnection, p->mcast.ttl); |
332dafa2 | 496 | debug(15, 3) ("neighborsUdpPing: key = '%s'\n", entry->getMD5Text()); |
a3d5953d | 497 | debug(15, 3) ("neighborsUdpPing: reqnum = %d\n", reqnum); |
090089c4 | 498 | |
dc9d133b | 499 | #if USE_HTCP |
cd196bc8 | 500 | if (p->options.htcp) { |
1994bb24 | 501 | debug(15, 3) ("neighborsUdpPing: sending HTCP query\n"); |
176ae152 | 502 | htcpQuery(entry, request, p); |
dc9d133b | 503 | } else |
504 | #endif | |
399cabec | 505 | if (p->icp.port == echo_port) { |
a3d5953d | 506 | debug(15, 4) ("neighborsUdpPing: Looks like a dumb cache, send DECHO ping\n"); |
1061b406 | 507 | echo_hdr.reqnum = reqnum; |
e6ccf245 | 508 | query = _icp_common_t::createMessage(ICP_DECHO, 0, url, reqnum, 0); |
af00901c | 509 | icpUdpSend(theOutIcpConnection, |
b69f7771 | 510 | &p->in_addr, |
9dee2904 | 511 | query, |
721b3dd8 | 512 | LOG_ICP_QUERY, |
aee4e794 | 513 | 0); |
090089c4 | 514 | } else { |
6d2296d4 | 515 | flags = 0; |
17a0a4ee | 516 | if (Config.onoff.query_icmp) |
399cabec | 517 | if (p->icp.version == ICP_VERSION_2) |
429fdbec | 518 | flags |= ICP_FLAG_SRC_RTT; |
e6ccf245 | 519 | query = _icp_common_t::createMessage(ICP_QUERY, flags, url, reqnum, 0); |
af00901c | 520 | icpUdpSend(theOutIcpConnection, |
b69f7771 | 521 | &p->in_addr, |
9dee2904 | 522 | query, |
721b3dd8 | 523 | LOG_ICP_QUERY, |
aee4e794 | 524 | 0); |
090089c4 | 525 | } |
429fdbec | 526 | queries_sent++; |
090089c4 | 527 | |
b69f7771 | 528 | p->stats.pings_sent++; |
b69f7771 | 529 | if (p->type == PEER_MULTICAST) { |
dc835977 | 530 | /* |
531 | * set a bogus last_reply time so neighborUp() never | |
532 | * says a multicast peer is dead. | |
533 | */ | |
534 | p->stats.last_reply = squid_curtime; | |
b69f7771 | 535 | (*exprep) += p->mcast.n_replies_expected; |
47b780e1 | 536 | } else if (neighborUp(p)) { |
537 | /* its alive, expect a reply from it */ | |
a8c926ff | 538 | if (neighborType(p, request) == PEER_PARENT) { |
539 | parent_exprep++; | |
540 | parent_timeout += p->stats.rtt; | |
541 | } else { | |
542 | sibling_exprep++; | |
543 | sibling_timeout += p->stats.rtt; | |
544 | } | |
090089c4 | 545 | } else { |
1061b406 | 546 | /* Neighbor is dead; ping it anyway, but don't expect a reply */ |
090089c4 | 547 | /* log it once at the threshold */ |
dc835977 | 548 | if (p->stats.logged_state == PEER_ALIVE) { |
ab4b78e9 | 549 | debug(15, 1) ("Detected DEAD %s: %s/%d/%d\n", |
b69f7771 | 550 | neighborTypeStr(p), |
399cabec | 551 | p->host, p->http_port, p->icp.port); |
dc835977 | 552 | p->stats.logged_state = PEER_DEAD; |
090089c4 | 553 | } |
554 | } | |
dc835977 | 555 | p->stats.last_query = squid_curtime; |
83b381d5 | 556 | if (p->stats.probe_start == 0) |
557 | p->stats.probe_start = squid_curtime; | |
090089c4 | 558 | } |
40a1495e | 559 | if ((first_ping = first_ping->next) == NULL) |
560 | first_ping = Config.peers; | |
090089c4 | 561 | |
0ab965da | 562 | #if ALLOW_SOURCE_PING |
090089c4 | 563 | /* only do source_ping if we have neighbors */ |
40a1495e | 564 | if (Config.npeers) { |
a369131d | 565 | const ipcache_addrs *ia = NULL; |
566 | struct sockaddr_in to_addr; | |
567 | char *host = request->host; | |
17a0a4ee | 568 | if (!Config.onoff.source_ping) { |
a3d5953d | 569 | debug(15, 6) ("neighborsUdpPing: Source Ping is disabled.\n"); |
0a0bf5db | 570 | } else if ((ia = ipcache_gethostbyname(host, 0))) { |
a3d5953d | 571 | debug(15, 6) ("neighborsUdpPing: Source Ping: to %s for '%s'\n", |
1061b406 | 572 | host, url); |
1061b406 | 573 | echo_hdr.reqnum = reqnum; |
16b204c4 | 574 | if (icmp_sock != -1) { |
e5f6c5c2 | 575 | icmpSourcePing(ia->in_addrs[ia->cur], &echo_hdr, url); |
16b204c4 | 576 | } else { |
577 | to_addr.sin_family = AF_INET; | |
e5f6c5c2 | 578 | to_addr.sin_addr = ia->in_addrs[ia->cur]; |
16b204c4 | 579 | to_addr.sin_port = htons(echo_port); |
e6ccf245 | 580 | query = _icp_common_t::createMessage(ICP_SECHO, 0, url, reqnum, 0); |
16b204c4 | 581 | icpUdpSend(theOutIcpConnection, |
16b204c4 | 582 | &to_addr, |
9dee2904 | 583 | query, |
721b3dd8 | 584 | LOG_ICP_QUERY, |
aee4e794 | 585 | 0); |
16b204c4 | 586 | } |
090089c4 | 587 | } else { |
a3d5953d | 588 | debug(15, 6) ("neighborsUdpPing: Source Ping: unknown host: %s\n", |
1061b406 | 589 | host); |
090089c4 | 590 | } |
591 | } | |
429fdbec | 592 | #endif |
a8c926ff | 593 | /* |
594 | * How many replies to expect? | |
595 | */ | |
596 | *exprep = parent_exprep + sibling_exprep; | |
597 | ||
52040193 | 598 | /* |
465dc415 | 599 | * If there is a configured timeout, use it |
52040193 | 600 | */ |
465dc415 | 601 | if (Config.Timeout.icp_query) |
bb337ad7 | 602 | *timeout = Config.Timeout.icp_query; |
28993292 | 603 | else { |
a8c926ff | 604 | if (*exprep > 0) { |
605 | if (parent_exprep) | |
606 | *timeout = 2 * parent_timeout / parent_exprep; | |
607 | else | |
608 | *timeout = 2 * sibling_timeout / sibling_exprep; | |
609 | } else | |
28993292 | 610 | *timeout = 2000; /* 2 seconds */ |
611 | if (Config.Timeout.icp_query_max) | |
612 | if (*timeout > Config.Timeout.icp_query_max) | |
613 | *timeout = Config.Timeout.icp_query_max; | |
43af4d27 | 614 | if (*timeout < Config.Timeout.icp_query_min) |
615 | *timeout = Config.Timeout.icp_query_min; | |
28993292 | 616 | } |
0a0bf5db | 617 | return peers_pinged; |
090089c4 | 618 | } |
619 | ||
26b164ac | 620 | /* lookup the digest of a given peer */ |
621 | lookup_t | |
f66a9ef4 | 622 | peerDigestLookup(peer * p, request_t * request) |
26b164ac | 623 | { |
6cfa8966 | 624 | #if USE_CACHE_DIGESTS |
f66a9ef4 | 625 | const cache_key *key = request ? storeKeyPublicByRequest(request) : NULL; |
26b164ac | 626 | assert(p); |
0c511722 | 627 | assert(request); |
69c95dd3 | 628 | debug(15, 5) ("peerDigestLookup: peer %s\n", p->host); |
4b4cd312 | 629 | /* does the peeer have a valid digest? */ |
e13ee7ad | 630 | if (!p->digest) { |
631 | debug(15, 5) ("peerDigestLookup: gone!\n"); | |
26b164ac | 632 | return LOOKUP_NONE; |
9689d97c | 633 | } else if (!peerHTTPOkay(p, request)) { |
e13ee7ad | 634 | debug(15, 5) ("peerDigestLookup: !peerHTTPOkay\n"); |
26b164ac | 635 | return LOOKUP_NONE; |
e13ee7ad | 636 | } else if (p->digest->flags.usable) { |
637 | debug(15, 5) ("peerDigestLookup: usable\n"); | |
4b4cd312 | 638 | /* fall through; put here to have common case on top */ ; |
e13ee7ad | 639 | } else if (!p->digest->flags.needed) { |
640 | debug(15, 5) ("peerDigestLookup: note need\n"); | |
641 | peerDigestNeeded(p->digest); | |
26b164ac | 642 | return LOOKUP_NONE; |
643 | } else { | |
e13ee7ad | 644 | debug(15, 5) ("peerDigestLookup: !ready && %srequested\n", |
645 | p->digest->flags.requested ? "" : "!"); | |
26b164ac | 646 | return LOOKUP_NONE; |
647 | } | |
69c95dd3 | 648 | debug(15, 5) ("peerDigestLookup: OK to lookup peer %s\n", p->host); |
e13ee7ad | 649 | assert(p->digest->cd); |
26b164ac | 650 | /* does digest predict a hit? */ |
e13ee7ad | 651 | if (!cacheDigestTest(p->digest->cd, key)) |
26b164ac | 652 | return LOOKUP_MISS; |
69c95dd3 | 653 | debug(15, 5) ("peerDigestLookup: peer %s says HIT!\n", p->host); |
26b164ac | 654 | return LOOKUP_HIT; |
655 | #endif | |
656 | return LOOKUP_NONE; | |
657 | } | |
658 | ||
659 | /* select best peer based on cache digests */ | |
a54d3f8e | 660 | peer * |
f66a9ef4 | 661 | neighborsDigestSelect(request_t * request) |
a54d3f8e | 662 | { |
663 | peer *best_p = NULL; | |
6cfa8966 | 664 | #if USE_CACHE_DIGESTS |
a54d3f8e | 665 | const cache_key *key; |
666 | int best_rtt = 0; | |
667 | int choice_count = 0; | |
668 | int ichoice_count = 0; | |
669 | peer *p; | |
670 | int p_rtt; | |
671 | int i; | |
03058802 | 672 | if (!request->flags.hierarchical) |
673 | return NULL; | |
f66a9ef4 | 674 | key = storeKeyPublicByRequest(request); |
a54d3f8e | 675 | for (i = 0, p = first_ping; i++ < Config.npeers; p = p->next) { |
26b164ac | 676 | lookup_t lookup; |
a54d3f8e | 677 | if (!p) |
678 | p = Config.peers; | |
679 | if (i == 1) | |
680 | first_ping = p; | |
f66a9ef4 | 681 | lookup = peerDigestLookup(p, request); |
26b164ac | 682 | if (lookup == LOOKUP_NONE) |
a54d3f8e | 683 | continue; |
a54d3f8e | 684 | choice_count++; |
26b164ac | 685 | if (lookup == LOOKUP_MISS) |
a54d3f8e | 686 | continue; |
26b164ac | 687 | p_rtt = netdbHostRtt(p->host); |
688 | debug(15, 5) ("neighborsDigestSelect: peer %s rtt: %d\n", | |
a54d3f8e | 689 | p->host, p_rtt); |
690 | /* is this peer better than others in terms of rtt ? */ | |
691 | if (!best_p || (p_rtt && p_rtt < best_rtt)) { | |
692 | best_p = p; | |
693 | best_rtt = p_rtt; | |
4b4cd312 | 694 | if (p_rtt) /* informative choice (aka educated guess) */ |
a54d3f8e | 695 | ichoice_count++; |
696 | debug(15, 4) ("neighborsDigestSelect: peer %s leads with rtt %d\n", | |
697 | p->host, best_rtt); | |
698 | } | |
699 | } | |
26b164ac | 700 | debug(15, 4) ("neighborsDigestSelect: choices: %d (%d)\n", |
701 | choice_count, ichoice_count); | |
702 | peerNoteDigestLookup(request, best_p, | |
703 | best_p ? LOOKUP_HIT : (choice_count ? LOOKUP_MISS : LOOKUP_NONE)); | |
a54d3f8e | 704 | request->hier.n_choices = choice_count; |
705 | request->hier.n_ichoices = ichoice_count; | |
706 | #endif | |
707 | return best_p; | |
708 | } | |
709 | ||
26b164ac | 710 | void |
4b4cd312 | 711 | peerNoteDigestLookup(request_t * request, peer * p, lookup_t lookup) |
26b164ac | 712 | { |
6cfa8966 | 713 | #if USE_CACHE_DIGESTS |
26b164ac | 714 | if (p) |
715 | strncpy(request->hier.cd_host, p->host, sizeof(request->hier.cd_host)); | |
716 | else | |
717 | *request->hier.cd_host = '\0'; | |
718 | request->hier.cd_lookup = lookup; | |
719 | debug(15, 4) ("peerNoteDigestLookup: peer %s, lookup: %s\n", | |
720 | p ? p->host : "<none>", lookup_t_str[lookup]); | |
721 | #endif | |
722 | } | |
723 | ||
d73844ca | 724 | static void |
b69f7771 | 725 | neighborAlive(peer * p, const MemObject * mem, const icp_common_t * header) |
4eda6afe | 726 | { |
39ac34a9 | 727 | if (p->stats.logged_state == PEER_DEAD && p->tcp_up) { |
ab4b78e9 | 728 | debug(15, 1) ("Detected REVIVED %s: %s/%d/%d\n", |
b69f7771 | 729 | neighborTypeStr(p), |
399cabec | 730 | p->host, p->http_port, p->icp.port); |
dc835977 | 731 | p->stats.logged_state = PEER_ALIVE; |
4eda6afe | 732 | } |
dc835977 | 733 | p->stats.last_reply = squid_curtime; |
83b381d5 | 734 | p->stats.probe_start = 0; |
44f2f2e4 | 735 | p->stats.pings_acked++; |
27cd7235 | 736 | if ((icp_opcode) header->opcode <= ICP_END) |
399cabec | 737 | p->icp.counts[header->opcode]++; |
44f2f2e4 | 738 | p->icp.version = (int) header->version; |
739 | } | |
740 | ||
741 | static void | |
742 | neighborUpdateRtt(peer * p, MemObject * mem) | |
743 | { | |
d1b63fc8 | 744 | int rtt, rtt_av_factor; |
d2cd6935 | 745 | if (!mem) |
746 | return; | |
44f2f2e4 | 747 | if (!mem->start_ping.tv_sec) |
748 | return; | |
749 | rtt = tvSubMsec(mem->start_ping, current_time); | |
1b6ef2d2 | 750 | if (rtt < 1 || rtt > 10000) |
751 | return; | |
d1b63fc8 | 752 | rtt_av_factor = RTT_AV_FACTOR; |
753 | if (p->options.weighted_roundrobin) | |
754 | rtt_av_factor = RTT_BACKGROUND_AV_FACTOR; | |
1b6ef2d2 | 755 | p->stats.rtt = intAverage(p->stats.rtt, rtt, |
d1b63fc8 | 756 | p->stats.pings_acked, rtt_av_factor); |
4eda6afe | 757 | } |
090089c4 | 758 | |
399cabec | 759 | #if USE_HTCP |
760 | static void | |
761 | neighborAliveHtcp(peer * p, const MemObject * mem, const htcpReplyData * htcp) | |
762 | { | |
399cabec | 763 | if (p->stats.logged_state == PEER_DEAD && p->tcp_up) { |
764 | debug(15, 1) ("Detected REVIVED %s: %s/%d/%d\n", | |
765 | neighborTypeStr(p), | |
766 | p->host, p->http_port, p->icp.port); | |
767 | p->stats.logged_state = PEER_ALIVE; | |
768 | } | |
769 | p->stats.last_reply = squid_curtime; | |
83b381d5 | 770 | p->stats.probe_start = 0; |
44f2f2e4 | 771 | p->stats.pings_acked++; |
399cabec | 772 | p->htcp.counts[htcp->hit ? 1 : 0]++; |
44f2f2e4 | 773 | p->htcp.version = htcp->version; |
399cabec | 774 | } |
775 | #endif | |
776 | ||
38792624 | 777 | static void |
56b62ecc | 778 | neighborCountIgnored(peer * p) |
a7e59001 | 779 | { |
b69f7771 | 780 | if (p == NULL) |
a7e59001 | 781 | return; |
b69f7771 | 782 | p->stats.ignored_replies++; |
c7a3724d | 783 | NLateReplies++; |
a7e59001 | 784 | } |
785 | ||
e102ebda | 786 | static peer *non_peers = NULL; |
787 | ||
788 | static void | |
789 | neighborIgnoreNonPeer(const struct sockaddr_in *from, icp_opcode opcode) | |
790 | { | |
791 | peer *np; | |
e102ebda | 792 | for (np = non_peers; np; np = np->next) { |
793 | if (np->in_addr.sin_addr.s_addr != from->sin_addr.s_addr) | |
794 | continue; | |
795 | if (np->in_addr.sin_port != from->sin_port) | |
796 | continue; | |
797 | break; | |
798 | } | |
799 | if (np == NULL) { | |
e6ccf245 | 800 | np = (peer *)xcalloc(1, sizeof(peer)); |
e102ebda | 801 | np->in_addr.sin_addr = from->sin_addr; |
802 | np->in_addr.sin_port = from->sin_port; | |
399cabec | 803 | np->icp.port = ntohl(from->sin_port); |
e102ebda | 804 | np->type = PEER_NONE; |
805 | np->host = xstrdup(inet_ntoa(from->sin_addr)); | |
806 | np->next = non_peers; | |
807 | non_peers = np; | |
808 | } | |
399cabec | 809 | np->icp.counts[opcode]++; |
e4cc2fdf | 810 | if (isPowTen(++np->stats.ignored_replies)) |
811 | debug(15, 1) ("WARNING: Ignored %d replies from non-peer %s\n", | |
812 | np->stats.ignored_replies, np->host); | |
e102ebda | 813 | } |
814 | ||
429fdbec | 815 | /* ignoreMulticastReply |
816 | * | |
d6827718 | 817 | * * We want to ignore replies from multicast peers if the |
818 | * * cache_host_domain rules would normally prevent the peer | |
819 | * * from being used | |
429fdbec | 820 | */ |
821 | static int | |
b69f7771 | 822 | ignoreMulticastReply(peer * p, MemObject * mem) |
429fdbec | 823 | { |
b69f7771 | 824 | if (p == NULL) |
429fdbec | 825 | return 0; |
cd196bc8 | 826 | if (!p->options.mcast_responder) |
429fdbec | 827 | return 0; |
b69f7771 | 828 | if (peerHTTPOkay(p, mem->request)) |
429fdbec | 829 | return 0; |
830 | return 1; | |
831 | } | |
832 | ||
833 | /* I should attach these records to the entry. We take the first | |
834 | * hit we get our wait until everyone misses. The timeout handler | |
835 | * call needs to nip this shopping list or call one of the misses. | |
836 | * | |
837 | * If a hit process is already started, then sobeit | |
838 | */ | |
b8d8561b | 839 | void |
5ad33356 | 840 | neighborsUdpAck(const cache_key * key, icp_common_t * header, const struct sockaddr_in *from) |
090089c4 | 841 | { |
b69f7771 | 842 | peer *p = NULL; |
5ad33356 | 843 | StoreEntry *entry; |
844 | MemObject *mem = NULL; | |
b6c0e933 | 845 | peer_t ntype = PEER_NONE; |
5e5126cc | 846 | char *opcode_d; |
a7e59001 | 847 | icp_opcode opcode = (icp_opcode) header->opcode; |
090089c4 | 848 | |
5ad33356 | 849 | debug(15, 6) ("neighborsUdpAck: opcode %d '%s'\n", |
850 | (int) opcode, storeKeyText(key)); | |
851 | if (NULL != (entry = storeGet(key))) | |
852 | mem = entry->mem_obj; | |
b69f7771 | 853 | if ((p = whichPeer(from))) |
854 | neighborAlive(p, mem, header); | |
27cd7235 | 855 | if (opcode > ICP_END) |
d2af9477 | 856 | return; |
27cd7235 | 857 | opcode_d = icp_opcode_str[opcode]; |
41587298 | 858 | if (p) |
859 | neighborUpdateRtt(p, mem); | |
5ad33356 | 860 | /* Does the entry exist? */ |
861 | if (NULL == entry) { | |
862 | debug(12, 3) ("neighborsUdpAck: Cache key '%s' not found\n", | |
863 | storeKeyText(key)); | |
56b62ecc | 864 | neighborCountIgnored(p); |
5ad33356 | 865 | return; |
866 | } | |
2d1c6a4f | 867 | /* check if someone is already fetching it */ |
d46a87a8 | 868 | if (EBIT_TEST(entry->flags, ENTRY_DISPATCHED)) { |
5ad33356 | 869 | debug(15, 3) ("neighborsUdpAck: '%s' already being fetched.\n", |
870 | storeKeyText(key)); | |
56b62ecc | 871 | neighborCountIgnored(p); |
d2af9477 | 872 | return; |
873 | } | |
2d1c6a4f | 874 | if (mem == NULL) { |
5ad33356 | 875 | debug(15, 2) ("Ignoring %s for missing mem_obj: %s\n", |
876 | opcode_d, storeKeyText(key)); | |
56b62ecc | 877 | neighborCountIgnored(p); |
8de2f7ad | 878 | return; |
879 | } | |
880 | if (entry->ping_status != PING_WAITING) { | |
674ac814 | 881 | debug(15, 2) ("neighborsUdpAck: Late %s for %s\n", |
5ad33356 | 882 | opcode_d, storeKeyText(key)); |
56b62ecc | 883 | neighborCountIgnored(p); |
8de2f7ad | 884 | return; |
885 | } | |
4eda6afe | 886 | if (entry->lock_count == 0) { |
5ad33356 | 887 | debug(12, 1) ("neighborsUdpAck: '%s' has no locks\n", |
888 | storeKeyText(key)); | |
56b62ecc | 889 | neighborCountIgnored(p); |
4eda6afe | 890 | return; |
090089c4 | 891 | } |
a3d5953d | 892 | debug(15, 3) ("neighborsUdpAck: %s for '%s' from %s \n", |
5ad33356 | 893 | opcode_d, storeKeyText(key), p ? p->host : "source"); |
44f2f2e4 | 894 | if (p) { |
b69f7771 | 895 | ntype = neighborType(p, mem->request); |
44f2f2e4 | 896 | } |
b69f7771 | 897 | if (ignoreMulticastReply(p, mem)) { |
56b62ecc | 898 | neighborCountIgnored(p); |
27cd7235 | 899 | } else if (opcode == ICP_MISS) { |
b69f7771 | 900 | if (p == NULL) { |
e102ebda | 901 | neighborIgnoreNonPeer(from, opcode); |
d2af9477 | 902 | } else { |
b4e7f82d | 903 | mem->ping_reply_callback(p, ntype, PROTO_ICP, header, mem->ircb_data); |
30a4f2a8 | 904 | } |
a7c05555 | 905 | } else if (opcode == ICP_HIT) { |
b69f7771 | 906 | if (p == NULL) { |
e102ebda | 907 | neighborIgnoreNonPeer(from, opcode); |
d2af9477 | 908 | } else { |
27cd7235 | 909 | header->opcode = ICP_HIT; |
b4e7f82d | 910 | mem->ping_reply_callback(p, ntype, PROTO_ICP, header, mem->ircb_data); |
090089c4 | 911 | } |
27cd7235 | 912 | } else if (opcode == ICP_DECHO) { |
b69f7771 | 913 | if (p == NULL) { |
e102ebda | 914 | neighborIgnoreNonPeer(from, opcode); |
deb79f06 | 915 | } else if (ntype == PEER_SIBLING) { |
5e604a0e | 916 | debug_trap("neighborsUdpAck: Found non-ICP cache as SIBLING\n"); |
917 | debug_trap("neighborsUdpAck: non-ICP neighbors must be a PARENT\n"); | |
090089c4 | 918 | } else { |
b4e7f82d | 919 | mem->ping_reply_callback(p, ntype, PROTO_ICP, header, mem->ircb_data); |
090089c4 | 920 | } |
27cd7235 | 921 | } else if (opcode == ICP_SECHO) { |
b69f7771 | 922 | if (p) { |
a3d5953d | 923 | debug(15, 1) ("Ignoring SECHO from neighbor %s\n", p->host); |
56b62ecc | 924 | neighborCountIgnored(p); |
0ab965da | 925 | #if ALLOW_SOURCE_PING |
926 | } else if (Config.onoff.source_ping) { | |
b4e7f82d | 927 | mem->ping_reply_callback(NULL, ntype, PROTO_ICP, header, mem->ircb_data); |
0ab965da | 928 | #endif |
929 | } else { | |
930 | debug(15, 1) ("Unsolicited SECHO from %s\n", inet_ntoa(from->sin_addr)); | |
090089c4 | 931 | } |
27cd7235 | 932 | } else if (opcode == ICP_DENIED) { |
b69f7771 | 933 | if (p == NULL) { |
e102ebda | 934 | neighborIgnoreNonPeer(from, opcode); |
b69f7771 | 935 | } else if (p->stats.pings_acked > 100) { |
399cabec | 936 | if (100 * p->icp.counts[ICP_DENIED] / p->stats.pings_acked > 95) { |
a3d5953d | 937 | debug(15, 0) ("95%% of replies from '%s' are UDP_DENIED\n", p->host); |
938 | debug(15, 0) ("Disabling '%s', please check your configuration.\n", p->host); | |
b69f7771 | 939 | neighborRemove(p); |
940 | p = NULL; | |
e006d372 | 941 | } else { |
56b62ecc | 942 | neighborCountIgnored(p); |
30a4f2a8 | 943 | } |
944 | } | |
27cd7235 | 945 | } else if (opcode == ICP_MISS_NOFETCH) { |
b4e7f82d | 946 | mem->ping_reply_callback(p, ntype, PROTO_ICP, header, mem->ircb_data); |
090089c4 | 947 | } else { |
a3d5953d | 948 | debug(15, 0) ("neighborsUdpAck: Unexpected ICP reply: %s\n", opcode_d); |
d2af9477 | 949 | } |
090089c4 | 950 | } |
951 | ||
deb79f06 | 952 | peer * |
40a1495e | 953 | peerFindByName(const char *name) |
98ffb7e4 | 954 | { |
b69f7771 | 955 | peer *p = NULL; |
40a1495e | 956 | for (p = Config.peers; p; p = p->next) { |
b69f7771 | 957 | if (!strcasecmp(name, p->host)) |
98ffb7e4 | 958 | break; |
959 | } | |
b69f7771 | 960 | return p; |
98ffb7e4 | 961 | } |
b012353a | 962 | |
db1cd23c | 963 | peer * |
964 | peerFindByNameAndPort(const char *name, unsigned short port) | |
965 | { | |
966 | peer *p = NULL; | |
967 | for (p = Config.peers; p; p = p->next) { | |
968 | if (strcasecmp(name, p->host)) | |
969 | continue; | |
970 | if (port != p->http_port) | |
971 | continue; | |
972 | break; | |
973 | } | |
974 | return p; | |
975 | } | |
976 | ||
5269d0bd | 977 | int |
b69f7771 | 978 | neighborUp(const peer * p) |
5269d0bd | 979 | { |
eb406bb7 | 980 | if (!p->tcp_up) { |
a4b8110e | 981 | peerProbeConnect((peer *) p); |
03b82057 | 982 | return 0; |
eb406bb7 | 983 | } |
83b381d5 | 984 | if (p->options.no_query) |
03b82057 | 985 | return 1; |
83b381d5 | 986 | if (p->stats.probe_start != 0 && |
a4b8110e | 987 | squid_curtime - p->stats.probe_start > Config.Timeout.deadPeer) |
03b82057 | 988 | return 0; |
64b8103b | 989 | /* |
990 | * The peer can not be UP if we don't have any IP addresses | |
186477c1 | 991 | * for it. |
64b8103b | 992 | */ |
993 | if (0 == p->n_addresses) | |
994 | return 0; | |
03b82057 | 995 | return 1; |
5269d0bd | 996 | } |
997 | ||
e6e3b09b | 998 | void |
28c60158 | 999 | peerDestroy(void *data) |
e6e3b09b | 1000 | { |
e6ccf245 | 1001 | peer *p = (peer *)data; |
ee4a1f5d | 1002 | struct _domain_ping *l = NULL; |
1003 | struct _domain_ping *nl = NULL; | |
b69f7771 | 1004 | if (p == NULL) |
3c6e634f | 1005 | return; |
b6a2f15e | 1006 | for (l = p->peer_domain; l; l = nl) { |
ee4a1f5d | 1007 | nl = l->next; |
1008 | safe_free(l->domain); | |
1009 | safe_free(l); | |
1010 | } | |
b69f7771 | 1011 | safe_free(p->host); |
e13ee7ad | 1012 | #if USE_CACHE_DIGESTS |
fa80a8ef | 1013 | cbdataReferenceDone(p->digest); |
e13ee7ad | 1014 | #endif |
e6e3b09b | 1015 | } |
c7a3724d | 1016 | |
e13ee7ad | 1017 | void |
e16d4250 | 1018 | peerNoteDigestGone(peer * p) |
e13ee7ad | 1019 | { |
1020 | #if USE_CACHE_DIGESTS | |
fa80a8ef | 1021 | cbdataReferenceDone(p->digest); |
e13ee7ad | 1022 | #endif |
1023 | } | |
1024 | ||
dd4bd44e | 1025 | static void |
03a1ee42 | 1026 | peerDNSConfigure(const ipcache_addrs * ia, void *data) |
dd4bd44e | 1027 | { |
e6ccf245 | 1028 | peer *p = (peer *)data; |
dd4bd44e | 1029 | struct sockaddr_in *ap; |
1030 | int j; | |
b69f7771 | 1031 | if (p->n_addresses == 0) { |
a3d5953d | 1032 | debug(15, 1) ("Configuring %s %s/%d/%d\n", neighborTypeStr(p), |
399cabec | 1033 | p->host, p->http_port, p->icp.port); |
b69f7771 | 1034 | if (p->type == PEER_MULTICAST) |
a3d5953d | 1035 | debug(15, 1) (" Multicast TTL = %d\n", p->mcast.ttl); |
b69f7771 | 1036 | } |
1037 | p->n_addresses = 0; | |
dd4bd44e | 1038 | if (ia == NULL) { |
a3d5953d | 1039 | debug(0, 0) ("WARNING: DNS lookup for '%s' failed!\n", p->host); |
dd4bd44e | 1040 | return; |
1041 | } | |
c04fe656 | 1042 | if ((int) ia->count < 1) { |
a3d5953d | 1043 | debug(0, 0) ("WARNING: No IP address found for '%s'!\n", p->host); |
dd4bd44e | 1044 | return; |
1045 | } | |
c04fe656 | 1046 | for (j = 0; j < (int) ia->count && j < PEER_MAX_ADDRESSES; j++) { |
b69f7771 | 1047 | p->addresses[j] = ia->in_addrs[j]; |
a3d5953d | 1048 | debug(15, 2) ("--> IP address #%d: %s\n", j, inet_ntoa(p->addresses[j])); |
b69f7771 | 1049 | p->n_addresses++; |
dd4bd44e | 1050 | } |
b69f7771 | 1051 | ap = &p->in_addr; |
dd4bd44e | 1052 | memset(ap, '\0', sizeof(struct sockaddr_in)); |
1053 | ap->sin_family = AF_INET; | |
b69f7771 | 1054 | ap->sin_addr = p->addresses[0]; |
399cabec | 1055 | ap->sin_port = htons(p->icp.port); |
b69f7771 | 1056 | if (p->type == PEER_MULTICAST) |
1057 | peerCountMcastPeersSchedule(p, 10); | |
1a827bc0 | 1058 | if (p->type != PEER_MULTICAST) |
cd196bc8 | 1059 | if (!p->options.no_netdb_exchange) |
223213df | 1060 | eventAddIsh("netdbExchangeStart", netdbExchangeStart, p, 30.0, 1); |
dd4bd44e | 1061 | } |
1062 | ||
1063 | static void | |
51242273 | 1064 | peerRefreshDNS(void *data) |
dd4bd44e | 1065 | { |
b69f7771 | 1066 | peer *p = NULL; |
46ca5fc6 | 1067 | if (eventFind(peerRefreshDNS, NULL)) |
73cb7e3a | 1068 | eventDelete(peerRefreshDNS, NULL); |
51242273 | 1069 | if (!data && 0 == stat5minClientRequests()) { |
1f3c4622 | 1070 | /* no recent client traffic, wait a bit */ |
5999b776 | 1071 | eventAddIsh("peerRefreshDNS", peerRefreshDNS, NULL, 180.0, 1); |
1f3c4622 | 1072 | return; |
dd4bd44e | 1073 | } |
1f3c4622 | 1074 | for (p = Config.peers; p; p = p->next) |
1075 | ipcache_nbgethostbyname(p->host, peerDNSConfigure, p); | |
dd4bd44e | 1076 | /* Reconfigure the peers every hour */ |
52040193 | 1077 | eventAddIsh("peerRefreshDNS", peerRefreshDNS, NULL, 3600.0, 1); |
dd4bd44e | 1078 | } |
e924600d | 1079 | |
eb406bb7 | 1080 | void |
a4b8110e | 1081 | peerConnectFailed(peer * p) |
eb406bb7 | 1082 | { |
1083 | p->stats.last_connect_failure = squid_curtime; | |
1084 | if (!p->tcp_up) { | |
1085 | debug(15, 2) ("TCP connection to %s/%d dead\n", p->host, p->http_port); | |
1086 | return; | |
1087 | } | |
1088 | debug(15, 1) ("TCP connection to %s/%d failed\n", p->host, p->http_port); | |
1089 | p->tcp_up--; | |
1090 | if (!p->tcp_up) { | |
1091 | debug(15, 1) ("Detected DEAD %s: %s/%d/%d\n", | |
1092 | neighborTypeStr(p), | |
1093 | p->host, p->http_port, p->icp.port); | |
1094 | p->stats.logged_state = PEER_DEAD; | |
1095 | } | |
1096 | } | |
1097 | ||
1098 | void | |
a4b8110e | 1099 | peerConnectSucceded(peer * p) |
eb406bb7 | 1100 | { |
1101 | if (!p->tcp_up) { | |
1102 | debug(15, 2) ("TCP connection to %s/%d succeded\n", p->host, p->http_port); | |
1103 | debug(15, 1) ("Detected REVIVED %s: %s/%d/%d\n", | |
1104 | neighborTypeStr(p), | |
1105 | p->host, p->http_port, p->icp.port); | |
1106 | p->stats.logged_state = PEER_ALIVE; | |
1107 | } | |
1108 | p->tcp_up = PEER_TCP_MAGIC_COUNT; | |
1109 | } | |
1110 | ||
0e7b6b06 | 1111 | /* |
eb406bb7 | 1112 | * peerProbeConnect will be called on dead peers by neighborUp |
0e7b6b06 | 1113 | */ |
e924600d | 1114 | static void |
a4b8110e | 1115 | peerProbeConnect(peer * p) |
e924600d | 1116 | { |
e924600d | 1117 | int fd; |
eb406bb7 | 1118 | if (p->test_fd != -1) |
a4b8110e | 1119 | return; /* probe already running */ |
eb406bb7 | 1120 | if (squid_curtime - p->stats.last_connect_probe < Config.Timeout.connect) |
a4b8110e | 1121 | return; /* don't probe to often */ |
d6827718 | 1122 | fd = comm_open(SOCK_STREAM, 0, getOutgoingAddr(NULL), |
e924600d | 1123 | 0, COMM_NONBLOCKING, p->host); |
1124 | if (fd < 0) | |
1125 | return; | |
03a1ee42 | 1126 | p->test_fd = fd; |
eb406bb7 | 1127 | p->stats.last_connect_probe = squid_curtime; |
1128 | ipcache_nbgethostbyname(p->host, peerProbeConnect2, p); | |
e924600d | 1129 | } |
1130 | ||
1131 | static void | |
eb406bb7 | 1132 | peerProbeConnect2(const ipcache_addrs * ianotused, void *data) |
e924600d | 1133 | { |
e6ccf245 | 1134 | peer *p = (peer *)data; |
03a1ee42 | 1135 | commConnectStart(p->test_fd, |
e924600d | 1136 | p->host, |
1137 | p->http_port, | |
eb406bb7 | 1138 | peerProbeConnectDone, |
e924600d | 1139 | p); |
1140 | } | |
1141 | ||
1142 | static void | |
3d7e9d7c | 1143 | peerProbeConnectDone(int fd, comm_err_t status, void *data) |
e924600d | 1144 | { |
e6ccf245 | 1145 | peer *p = (peer*)data; |
98829f69 | 1146 | if (status == COMM_OK) { |
eb406bb7 | 1147 | peerConnectSucceded(p); |
e924600d | 1148 | } else { |
eb406bb7 | 1149 | peerConnectFailed(p); |
e924600d | 1150 | } |
1151 | comm_close(fd); | |
eb406bb7 | 1152 | p->test_fd = -1; |
e924600d | 1153 | return; |
1154 | } | |
1155 | ||
429fdbec | 1156 | static void |
1157 | peerCountMcastPeersSchedule(peer * p, time_t when) | |
1158 | { | |
b515fc11 | 1159 | if (p->mcast.flags.count_event_pending) |
429fdbec | 1160 | return; |
1161 | eventAdd("peerCountMcastPeersStart", | |
1162 | peerCountMcastPeersStart, | |
1163 | p, | |
52040193 | 1164 | (double) when, 1); |
b515fc11 | 1165 | p->mcast.flags.count_event_pending = 1; |
429fdbec | 1166 | } |
1167 | ||
1168 | static void | |
1169 | peerCountMcastPeersStart(void *data) | |
1170 | { | |
e6ccf245 | 1171 | peer *p = (peer *)data; |
28c60158 | 1172 | ps_state *psstate; |
429fdbec | 1173 | StoreEntry *fake; |
1174 | MemObject *mem; | |
1175 | icp_common_t *query; | |
007b8be4 | 1176 | int reqnum; |
429fdbec | 1177 | LOCAL_ARRAY(char, url, MAX_URL); |
ce66013b | 1178 | assert(p->type == PEER_MULTICAST); |
b515fc11 | 1179 | p->mcast.flags.count_event_pending = 0; |
042461c3 | 1180 | snprintf(url, MAX_URL, "http://%s/", inet_ntoa(p->in_addr.sin_addr)); |
e429f975 | 1181 | fake = storeCreateEntry(url, url, request_flags(), METHOD_GET); |
72711e31 | 1182 | psstate = cbdataAlloc(ps_state); |
429fdbec | 1183 | psstate->request = requestLink(urlParse(METHOD_GET, url)); |
1184 | psstate->entry = fake; | |
1185 | psstate->callback = NULL; | |
429fdbec | 1186 | psstate->callback_data = p; |
b4e7f82d | 1187 | psstate->ping.start = current_time; |
429fdbec | 1188 | mem = fake->mem_obj; |
2db609de | 1189 | mem->request = requestLink(psstate->request); |
429fdbec | 1190 | mem->start_ping = current_time; |
b4e7f82d | 1191 | mem->ping_reply_callback = peerCountHandleIcpReply; |
429fdbec | 1192 | mem->ircb_data = psstate; |
03a1ee42 | 1193 | mcastSetTtl(theOutIcpConnection, p->mcast.ttl); |
007b8be4 | 1194 | p->mcast.id = mem->id; |
332dafa2 | 1195 | reqnum = icpSetCacheKey((const cache_key *)fake->key); |
e6ccf245 | 1196 | query = _icp_common_t::createMessage(ICP_QUERY, 0, url, reqnum, 0); |
429fdbec | 1197 | icpUdpSend(theOutIcpConnection, |
1198 | &p->in_addr, | |
1199 | query, | |
721b3dd8 | 1200 | LOG_ICP_QUERY, |
aee4e794 | 1201 | 0); |
429fdbec | 1202 | fake->ping_status = PING_WAITING; |
1203 | eventAdd("peerCountMcastPeersDone", | |
1204 | peerCountMcastPeersDone, | |
2db609de | 1205 | psstate, |
465dc415 | 1206 | (double) Config.Timeout.mcast_icp_query, 1); |
b515fc11 | 1207 | p->mcast.flags.counting = 1; |
429fdbec | 1208 | peerCountMcastPeersSchedule(p, MCAST_COUNT_RATE); |
1209 | } | |
1210 | ||
1211 | static void | |
1212 | peerCountMcastPeersDone(void *data) | |
1213 | { | |
e6ccf245 | 1214 | ps_state *psstate = (ps_state *)data; |
1215 | peer *p = (peer *)psstate->callback_data; | |
429fdbec | 1216 | StoreEntry *fake = psstate->entry; |
b515fc11 | 1217 | p->mcast.flags.counting = 0; |
9e4ad609 | 1218 | p->mcast.avg_n_members = doubleAverage(p->mcast.avg_n_members, |
b4e7f82d | 1219 | (double) psstate->ping.n_recv, |
9e4ad609 | 1220 | ++p->mcast.n_times_counted, |
1221 | 10); | |
1a827bc0 | 1222 | debug(15, 1) ("Group %s: %d replies, %4.1f average, RTT %d\n", |
429fdbec | 1223 | p->host, |
b4e7f82d | 1224 | psstate->ping.n_recv, |
1a827bc0 | 1225 | p->mcast.avg_n_members, |
1226 | p->stats.rtt); | |
429fdbec | 1227 | p->mcast.n_replies_expected = (int) p->mcast.avg_n_members; |
b7fe0ab0 | 1228 | EBIT_SET(fake->flags, ENTRY_ABORTED); |
e7a22b88 | 1229 | requestUnlink(fake->mem_obj->request); |
f0d5043e | 1230 | fake->mem_obj->request = NULL; |
429fdbec | 1231 | storeReleaseRequest(fake); |
1232 | storeUnlockObject(fake); | |
e7a22b88 | 1233 | requestUnlink(psstate->request); |
1a827bc0 | 1234 | cbdataFree(psstate); |
429fdbec | 1235 | } |
1236 | ||
1237 | static void | |
5942e8d4 | 1238 | peerCountHandleIcpReply(peer * p, peer_t type, protocol_t proto, void *hdrnotused, void *data) |
429fdbec | 1239 | { |
d1b63fc8 | 1240 | int rtt_av_factor; |
1241 | ||
e6ccf245 | 1242 | ps_state *psstate = (ps_state *)data; |
1a827bc0 | 1243 | StoreEntry *fake = psstate->entry; |
1244 | MemObject *mem = fake->mem_obj; | |
1245 | int rtt = tvSubMsec(mem->start_ping, current_time); | |
86aebcda | 1246 | assert(proto == PROTO_ICP); |
1a827bc0 | 1247 | assert(fake); |
1248 | assert(mem); | |
b4e7f82d | 1249 | psstate->ping.n_recv++; |
d1b63fc8 | 1250 | rtt_av_factor = RTT_AV_FACTOR; |
1251 | if (p->options.weighted_roundrobin) | |
1252 | rtt_av_factor = RTT_BACKGROUND_AV_FACTOR; | |
1253 | p->stats.rtt = intAverage(p->stats.rtt, rtt, psstate->ping.n_recv, rtt_av_factor); | |
429fdbec | 1254 | } |
ed7f5615 | 1255 | |
1256 | static void | |
1257 | neighborDumpPeers(StoreEntry * sentry) | |
1258 | { | |
1259 | dump_peers(sentry, Config.peers); | |
1260 | } | |
1261 | ||
1262 | static void | |
1263 | neighborDumpNonPeers(StoreEntry * sentry) | |
1264 | { | |
1265 | dump_peers(sentry, non_peers); | |
1266 | } | |
1267 | ||
a369131d | 1268 | void |
1269 | dump_peer_options(StoreEntry * sentry, peer * p) | |
1270 | { | |
cd196bc8 | 1271 | if (p->options.proxy_only) |
a369131d | 1272 | storeAppendPrintf(sentry, " proxy-only"); |
cd196bc8 | 1273 | if (p->options.no_query) |
a369131d | 1274 | storeAppendPrintf(sentry, " no-query"); |
d1b63fc8 | 1275 | if (p->options.background_ping) |
1276 | storeAppendPrintf(sentry, " background-ping"); | |
cd196bc8 | 1277 | if (p->options.no_digest) |
8638fc66 | 1278 | storeAppendPrintf(sentry, " no-digest"); |
cd196bc8 | 1279 | if (p->options.default_parent) |
a369131d | 1280 | storeAppendPrintf(sentry, " default"); |
cd196bc8 | 1281 | if (p->options.roundrobin) |
a369131d | 1282 | storeAppendPrintf(sentry, " round-robin"); |
d1b63fc8 | 1283 | if (p->options.weighted_roundrobin) |
1284 | storeAppendPrintf(sentry, " weighted-round-robin"); | |
cd196bc8 | 1285 | if (p->options.mcast_responder) |
a369131d | 1286 | storeAppendPrintf(sentry, " multicast-responder"); |
cd196bc8 | 1287 | if (p->options.closest_only) |
a369131d | 1288 | storeAppendPrintf(sentry, " closest-only"); |
dc9d133b | 1289 | #if USE_HTCP |
cd196bc8 | 1290 | if (p->options.htcp) |
e8d185d2 | 1291 | storeAppendPrintf(sentry, " htcp"); |
dc9d133b | 1292 | #endif |
cd196bc8 | 1293 | if (p->options.no_netdb_exchange) |
1a5dae67 | 1294 | storeAppendPrintf(sentry, " no-netdb-exchange"); |
95e36d02 | 1295 | #if DELAY_POOLS |
cd196bc8 | 1296 | if (p->options.no_delay) |
95e36d02 | 1297 | storeAppendPrintf(sentry, " no-delay"); |
1298 | #endif | |
c68e9c6b | 1299 | if (p->login) |
1300 | storeAppendPrintf(sentry, " login=%s", p->login); | |
a369131d | 1301 | if (p->mcast.ttl > 0) |
1302 | storeAppendPrintf(sentry, " ttl=%d", p->mcast.ttl); | |
1303 | storeAppendPrintf(sentry, "\n"); | |
1304 | } | |
1305 | ||
ed7f5615 | 1306 | static void |
1307 | dump_peers(StoreEntry * sentry, peer * peers) | |
1308 | { | |
1309 | peer *e = NULL; | |
1310 | struct _domain_ping *d = NULL; | |
1311 | icp_opcode op; | |
06e6d12a | 1312 | int i; |
ed7f5615 | 1313 | if (peers == NULL) |
1314 | storeAppendPrintf(sentry, "There are no neighbors installed.\n"); | |
1315 | for (e = peers; e; e = e->next) { | |
1316 | assert(e->host != NULL); | |
1317 | storeAppendPrintf(sentry, "\n%-11.11s: %s/%d/%d\n", | |
1318 | neighborTypeStr(e), | |
1319 | e->host, | |
1320 | e->http_port, | |
399cabec | 1321 | e->icp.port); |
a369131d | 1322 | storeAppendPrintf(sentry, "Flags :"); |
1323 | dump_peer_options(sentry, e); | |
06e6d12a | 1324 | for (i = 0; i < e->n_addresses; i++) { |
1325 | storeAppendPrintf(sentry, "Address[%d] : %s\n", i, | |
1326 | inet_ntoa(e->addresses[i])); | |
1327 | } | |
ed7f5615 | 1328 | storeAppendPrintf(sentry, "Status : %s\n", |
1329 | neighborUp(e) ? "Up" : "Down"); | |
1330 | storeAppendPrintf(sentry, "AVG RTT : %d msec\n", e->stats.rtt); | |
c7f9eb6d | 1331 | storeAppendPrintf(sentry, "OPEN CONNS : %d\n", e->stats.conn_open); |
ed7f5615 | 1332 | storeAppendPrintf(sentry, "LAST QUERY : %8d seconds ago\n", |
1333 | (int) (squid_curtime - e->stats.last_query)); | |
1334 | storeAppendPrintf(sentry, "LAST REPLY : %8d seconds ago\n", | |
1335 | (int) (squid_curtime - e->stats.last_reply)); | |
1336 | storeAppendPrintf(sentry, "PINGS SENT : %8d\n", e->stats.pings_sent); | |
1337 | storeAppendPrintf(sentry, "PINGS ACKED: %8d %3d%%\n", | |
1338 | e->stats.pings_acked, | |
1339 | percent(e->stats.pings_acked, e->stats.pings_sent)); | |
1340 | storeAppendPrintf(sentry, "FETCHES : %8d %3d%%\n", | |
1341 | e->stats.fetches, | |
1342 | percent(e->stats.fetches, e->stats.pings_acked)); | |
1343 | storeAppendPrintf(sentry, "IGNORED : %8d %3d%%\n", | |
1344 | e->stats.ignored_replies, | |
1345 | percent(e->stats.ignored_replies, e->stats.pings_acked)); | |
1346 | storeAppendPrintf(sentry, "Histogram of PINGS ACKED:\n"); | |
1994bb24 | 1347 | #if USE_HTCP |
cd196bc8 | 1348 | if (e->options.htcp) { |
1994bb24 | 1349 | storeAppendPrintf(sentry, "\tMisses\t%8d %3d%%\n", |
1350 | e->htcp.counts[0], | |
1351 | percent(e->htcp.counts[0], e->stats.pings_acked)); | |
1352 | storeAppendPrintf(sentry, "\tHits\t%8d %3d%%\n", | |
1353 | e->htcp.counts[1], | |
1354 | percent(e->htcp.counts[1], e->stats.pings_acked)); | |
1355 | } else { | |
1356 | #endif | |
e6ccf245 | 1357 | for (op = ICP_INVALID; op < ICP_END; ++op) { |
5942e8d4 | 1358 | if (e->icp.counts[op] == 0) |
1359 | continue; | |
1360 | storeAppendPrintf(sentry, " %12.12s : %8d %3d%%\n", | |
1361 | icp_opcode_str[op], | |
1362 | e->icp.counts[op], | |
1363 | percent(e->icp.counts[op], e->stats.pings_acked)); | |
1364 | } | |
1994bb24 | 1365 | #if USE_HTCP |
5942e8d4 | 1366 | } |
1994bb24 | 1367 | #endif |
eb406bb7 | 1368 | if (e->stats.last_connect_failure) { |
ed7f5615 | 1369 | storeAppendPrintf(sentry, "Last failed connect() at: %s\n", |
eb406bb7 | 1370 | mkhttpdlogtime(&(e->stats.last_connect_failure))); |
ed7f5615 | 1371 | } |
b6a2f15e | 1372 | if (e->peer_domain != NULL) { |
ed7f5615 | 1373 | storeAppendPrintf(sentry, "DOMAIN LIST: "); |
b6a2f15e | 1374 | for (d = e->peer_domain; d; d = d->next) { |
5942e8d4 | 1375 | storeAppendPrintf(sentry, "%s%s ", |
1376 | d->do_ping ? null_string : "!", d->domain); | |
1994bb24 | 1377 | } |
1378 | storeAppendPrintf(sentry, "\n"); | |
ed7f5615 | 1379 | } |
99edd1c3 | 1380 | storeAppendPrintf(sentry, "keep-alive ratio: %d%%\n", |
ed7f5615 | 1381 | percent(e->stats.n_keepalives_recv, e->stats.n_keepalives_sent)); |
1382 | } | |
1383 | } | |
86aebcda | 1384 | |
1385 | #if USE_HTCP | |
1386 | void | |
1387 | neighborsHtcpReply(const cache_key * key, htcpReplyData * htcp, const struct sockaddr_in *from) | |
1388 | { | |
b4e7f82d | 1389 | StoreEntry *e = storeGet(key); |
399cabec | 1390 | MemObject *mem = NULL; |
1391 | peer *p; | |
1392 | peer_t ntype = PEER_NONE; | |
399cabec | 1393 | debug(15, 6) ("neighborsHtcpReply: %s %s\n", |
1394 | htcp->hit ? "HIT" : "MISS", storeKeyText(key)); | |
1395 | if (NULL != (e = storeGet(key))) | |
1396 | mem = e->mem_obj; | |
1397 | if ((p = whichPeer(from))) | |
1398 | neighborAliveHtcp(p, mem, htcp); | |
1399 | /* Does the entry exist? */ | |
1400 | if (NULL == e) { | |
1401 | debug(12, 3) ("neighyborsHtcpReply: Cache key '%s' not found\n", | |
1402 | storeKeyText(key)); | |
1403 | neighborCountIgnored(p); | |
1404 | return; | |
1405 | } | |
1406 | /* check if someone is already fetching it */ | |
d46a87a8 | 1407 | if (EBIT_TEST(e->flags, ENTRY_DISPATCHED)) { |
399cabec | 1408 | debug(15, 3) ("neighborsUdpAck: '%s' already being fetched.\n", |
1409 | storeKeyText(key)); | |
1410 | neighborCountIgnored(p); | |
1411 | return; | |
1412 | } | |
1413 | if (mem == NULL) { | |
1414 | debug(15, 2) ("Ignoring reply for missing mem_obj: %s\n", | |
1415 | storeKeyText(key)); | |
1416 | neighborCountIgnored(p); | |
1417 | return; | |
1418 | } | |
1419 | if (e->ping_status != PING_WAITING) { | |
1420 | debug(15, 2) ("neighborsUdpAck: Entry %s is not PING_WAITING\n", | |
1421 | storeKeyText(key)); | |
1422 | neighborCountIgnored(p); | |
1423 | return; | |
1424 | } | |
1425 | if (e->lock_count == 0) { | |
1426 | debug(12, 1) ("neighborsUdpAck: '%s' has no locks\n", | |
1427 | storeKeyText(key)); | |
1428 | neighborCountIgnored(p); | |
1429 | return; | |
1430 | } | |
44f2f2e4 | 1431 | if (p) { |
399cabec | 1432 | ntype = neighborType(p, mem->request); |
44f2f2e4 | 1433 | neighborUpdateRtt(p, mem); |
1434 | } | |
399cabec | 1435 | if (ignoreMulticastReply(p, mem)) { |
1436 | neighborCountIgnored(p); | |
1437 | return; | |
1438 | } | |
9bc73deb | 1439 | debug(15, 3) ("neighborsHtcpReply: e = %p\n", e); |
b4e7f82d | 1440 | mem->ping_reply_callback(p, ntype, PROTO_HTCP, htcp, mem->ircb_data); |
86aebcda | 1441 | } |
1442 | #endif |