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30a4f2a8 | 1 | /* |
17a0a4ee | 2 | * $Id: neighbors.cc,v 1.154 1997/07/26 04:48:33 wessels Exp $ |
30a4f2a8 | 3 | * |
4 | * DEBUG: section 15 Neighbor Routines | |
5 | * AUTHOR: Harvest Derived | |
6 | * | |
42c04c16 | 7 | * SQUID Internet Object Cache http://squid.nlanr.net/Squid/ |
30a4f2a8 | 8 | * -------------------------------------------------------- |
9 | * | |
10 | * Squid is the result of efforts by numerous individuals from the | |
11 | * Internet community. Development is led by Duane Wessels of the | |
12 | * National Laboratory for Applied Network Research and funded by | |
13 | * the National Science Foundation. | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or modify | |
16 | * it under the terms of the GNU General Public License as published by | |
17 | * the Free Software Foundation; either version 2 of the License, or | |
18 | * (at your option) any later version. | |
19 | * | |
20 | * This program is distributed in the hope that it will be useful, | |
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | * GNU General Public License for more details. | |
24 | * | |
25 | * You should have received a copy of the GNU General Public License | |
26 | * along with this program; if not, write to the Free Software | |
27 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
28 | * | |
4d64d74a | 29 | */ |
019dd986 | 30 | |
31 | /* | |
30a4f2a8 | 32 | * Copyright (c) 1994, 1995. All rights reserved. |
33 | * | |
34 | * The Harvest software was developed by the Internet Research Task | |
35 | * Force Research Group on Resource Discovery (IRTF-RD): | |
36 | * | |
37 | * Mic Bowman of Transarc Corporation. | |
38 | * Peter Danzig of the University of Southern California. | |
39 | * Darren R. Hardy of the University of Colorado at Boulder. | |
40 | * Udi Manber of the University of Arizona. | |
41 | * Michael F. Schwartz of the University of Colorado at Boulder. | |
42 | * Duane Wessels of the University of Colorado at Boulder. | |
43 | * | |
44 | * This copyright notice applies to software in the Harvest | |
45 | * ``src/'' directory only. Users should consult the individual | |
46 | * copyright notices in the ``components/'' subdirectories for | |
47 | * copyright information about other software bundled with the | |
48 | * Harvest source code distribution. | |
49 | * | |
50 | * TERMS OF USE | |
51 | * | |
52 | * The Harvest software may be used and re-distributed without | |
53 | * charge, provided that the software origin and research team are | |
54 | * cited in any use of the system. Most commonly this is | |
55 | * accomplished by including a link to the Harvest Home Page | |
56 | * (http://harvest.cs.colorado.edu/) from the query page of any | |
57 | * Broker you deploy, as well as in the query result pages. These | |
58 | * links are generated automatically by the standard Broker | |
59 | * software distribution. | |
60 | * | |
61 | * The Harvest software is provided ``as is'', without express or | |
62 | * implied warranty, and with no support nor obligation to assist | |
63 | * in its use, correction, modification or enhancement. We assume | |
64 | * no liability with respect to the infringement of copyrights, | |
65 | * trade secrets, or any patents, and are not responsible for | |
66 | * consequential damages. Proper use of the Harvest software is | |
67 | * entirely the responsibility of the user. | |
68 | * | |
69 | * DERIVATIVE WORKS | |
70 | * | |
71 | * Users may make derivative works from the Harvest software, subject | |
72 | * to the following constraints: | |
73 | * | |
74 | * - You must include the above copyright notice and these | |
75 | * accompanying paragraphs in all forms of derivative works, | |
76 | * and any documentation and other materials related to such | |
77 | * distribution and use acknowledge that the software was | |
78 | * developed at the above institutions. | |
79 | * | |
80 | * - You must notify IRTF-RD regarding your distribution of | |
81 | * the derivative work. | |
82 | * | |
83 | * - You must clearly notify users that your are distributing | |
84 | * a modified version and not the original Harvest software. | |
85 | * | |
86 | * - Any derivative product is also subject to these copyright | |
87 | * and use restrictions. | |
88 | * | |
89 | * Note that the Harvest software is NOT in the public domain. We | |
90 | * retain copyright, as specified above. | |
91 | * | |
92 | * HISTORY OF FREE SOFTWARE STATUS | |
93 | * | |
94 | * Originally we required sites to license the software in cases | |
95 | * where they were going to build commercial products/services | |
96 | * around Harvest. In June 1995 we changed this policy. We now | |
97 | * allow people to use the core Harvest software (the code found in | |
98 | * the Harvest ``src/'' directory) for free. We made this change | |
99 | * in the interest of encouraging the widest possible deployment of | |
100 | * the technology. The Harvest software is really a reference | |
101 | * implementation of a set of protocols and formats, some of which | |
102 | * we intend to standardize. We encourage commercial | |
103 | * re-implementations of code complying to this set of standards. | |
019dd986 | 104 | */ |
090089c4 | 105 | |
44a47c6e | 106 | #include "squid.h" |
090089c4 | 107 | |
429fdbec | 108 | /* count mcast group peers every 15 minutes */ |
109 | #define MCAST_COUNT_RATE 900 | |
110 | ||
62fd6124 | 111 | static int peerAllowedToUse _PARAMS((const peer *, request_t *)); |
112 | static int peerHTTPOkay _PARAMS((const peer *, request_t *)); | |
deb79f06 | 113 | static int peerWouldBePinged _PARAMS((const peer *, request_t *)); |
114 | static void neighborRemove _PARAMS((peer *)); | |
115 | static peer *whichPeer _PARAMS((const struct sockaddr_in * from)); | |
116 | static void neighborAlive _PARAMS((peer *, const MemObject *, const icp_common_t *)); | |
b69f7771 | 117 | static void neighborCountIgnored _PARAMS((peer *, icp_opcode op_unused)); |
dd4bd44e | 118 | static void peerRefreshDNS _PARAMS((void *)); |
b69f7771 | 119 | static IPH peerDNSConfigure; |
e924600d | 120 | static void peerCheckConnect _PARAMS((void *)); |
b69f7771 | 121 | static IPH peerCheckConnect2; |
e924600d | 122 | static void peerCheckConnectDone _PARAMS((int, int, void *)); |
429fdbec | 123 | static void peerCountMcastPeersDone _PARAMS((void *data)); |
124 | static void peerCountMcastPeersStart _PARAMS((void *data)); | |
125 | static void peerCountMcastPeersSchedule _PARAMS((peer * p, time_t when)); | |
126 | static void peerCountHandleIcpReply _PARAMS((peer * p, peer_t type, icp_opcode op, void *data)); | |
090089c4 | 127 | |
090089c4 | 128 | static icp_common_t echo_hdr; |
30a4f2a8 | 129 | static u_short echo_port; |
30a4f2a8 | 130 | |
c7a3724d | 131 | static int NLateReplies = 0; |
40a1495e | 132 | static peer *first_ping = NULL; |
28070024 | 133 | |
c7a3724d | 134 | char * |
b69f7771 | 135 | neighborTypeStr(const peer * p) |
69a71bd7 | 136 | { |
b69f7771 | 137 | if (p->type == PEER_SIBLING) |
69a71bd7 | 138 | return "Sibling"; |
b69f7771 | 139 | if (p->type == PEER_MULTICAST) |
7b3bd12c | 140 | return "Multicast Group"; |
69a71bd7 | 141 | return "Parent"; |
142 | } | |
143 | ||
090089c4 | 144 | |
deb79f06 | 145 | static peer * |
146 | whichPeer(const struct sockaddr_in *from) | |
090089c4 | 147 | { |
22e4fa85 | 148 | int j; |
4eda6afe | 149 | u_short port = ntohs(from->sin_port); |
150 | struct in_addr ip = from->sin_addr; | |
b69f7771 | 151 | peer *p = NULL; |
a3d5953d | 152 | debug(15, 3) ("whichPeer: from %s port %d\n", inet_ntoa(ip), port); |
40a1495e | 153 | for (p = Config.peers; p; p = p->next) { |
b69f7771 | 154 | for (j = 0; j < p->n_addresses; j++) { |
155 | if (ip.s_addr == p->addresses[j].s_addr && port == p->icp_port) { | |
156 | return p; | |
090089c4 | 157 | } |
158 | } | |
159 | } | |
4eda6afe | 160 | return NULL; |
090089c4 | 161 | } |
162 | ||
b6c0e933 | 163 | static peer_t |
b69f7771 | 164 | neighborType(const peer * p, const request_t * request) |
24a1003d | 165 | { |
b012353a | 166 | const struct _domain_type *d = NULL; |
b69f7771 | 167 | for (d = p->typelist; d; d = d->next) { |
24a1003d | 168 | if (matchDomainName(d->domain, request->host)) |
deb79f06 | 169 | if (d->type != PEER_NONE) |
b012353a | 170 | return d->type; |
24a1003d | 171 | } |
b69f7771 | 172 | return p->type; |
24a1003d | 173 | } |
174 | ||
7b3bd12c | 175 | /* |
62fd6124 | 176 | * peerAllowedToUse |
7b3bd12c | 177 | * |
dd4bd44e | 178 | * this function figures out if it is appropriate to fetch REQUEST |
62fd6124 | 179 | * from PEER. |
7b3bd12c | 180 | */ |
b8d8561b | 181 | static int |
b69f7771 | 182 | peerAllowedToUse(const peer * p, request_t * request) |
090089c4 | 183 | { |
b012353a | 184 | const struct _domain_ping *d = NULL; |
090089c4 | 185 | int do_ping = 1; |
0ee4272b | 186 | const struct _acl_list *a = NULL; |
f88bb09c | 187 | aclCheck_t checklist; |
0a0bf5db | 188 | if (request == NULL) |
189 | fatal_dump("peerAllowedToUse: NULL request"); | |
24a1003d | 190 | if (BIT_TEST(request->flags, REQ_NOCACHE)) |
b69f7771 | 191 | if (neighborType(p, request) == PEER_SIBLING) |
24a1003d | 192 | return 0; |
d950cec8 | 193 | if (BIT_TEST(request->flags, REQ_REFRESH)) |
b69f7771 | 194 | if (neighborType(p, request) == PEER_SIBLING) |
d950cec8 | 195 | return 0; |
b69f7771 | 196 | if (p->pinglist == NULL && p->acls == NULL) |
090089c4 | 197 | return do_ping; |
090089c4 | 198 | do_ping = 0; |
b69f7771 | 199 | for (d = p->pinglist; d; d = d->next) { |
30a4f2a8 | 200 | if (matchDomainName(d->domain, request->host)) |
201 | return d->do_ping; | |
202 | do_ping = !d->do_ping; | |
203 | } | |
8ae8bb05 | 204 | checklist.src_addr = request->client_addr; |
f88bb09c | 205 | checklist.request = request; |
b69f7771 | 206 | for (a = p->acls; a; a = a->next) { |
f88bb09c | 207 | if (aclMatchAcl(a->acl, &checklist)) |
30a4f2a8 | 208 | return a->op; |
209 | do_ping = !a->op; | |
090089c4 | 210 | } |
211 | return do_ping; | |
212 | } | |
213 | ||
62fd6124 | 214 | /* Return TRUE if it is okay to send an ICP request to this peer. */ |
215 | static int | |
b69f7771 | 216 | peerWouldBePinged(const peer * p, request_t * request) |
62fd6124 | 217 | { |
b69f7771 | 218 | if (!peerAllowedToUse(p, request)) |
62fd6124 | 219 | return 0; |
b69f7771 | 220 | if (p->options & NEIGHBOR_NO_QUERY) |
62fd6124 | 221 | return 0; |
b69f7771 | 222 | if (p->options & NEIGHBOR_MCAST_RESPONDER) |
62fd6124 | 223 | return 0; |
224 | /* the case below seems strange, but can happen if the | |
225 | * URL host is on the other side of a firewall */ | |
b69f7771 | 226 | if (p->type == PEER_SIBLING) |
62fd6124 | 227 | if (!BIT_TEST(request->flags, REQ_HIERARCHICAL)) |
228 | return 0; | |
b69f7771 | 229 | if (p->icp_port == echo_port) |
230 | if (!neighborUp(p)) | |
62fd6124 | 231 | return 0; |
b69f7771 | 232 | if (p->n_addresses == 0) |
dd4bd44e | 233 | return 0; |
62fd6124 | 234 | return 1; |
235 | } | |
236 | ||
237 | /* Return TRUE if it is okay to send an HTTP request to this peer. */ | |
238 | static int | |
b69f7771 | 239 | peerHTTPOkay(const peer * p, request_t * request) |
62fd6124 | 240 | { |
b69f7771 | 241 | if (!peerAllowedToUse(p, request)) |
62fd6124 | 242 | return 0; |
b69f7771 | 243 | if (!neighborUp(p)) |
62fd6124 | 244 | return 0; |
245 | return 1; | |
246 | } | |
247 | ||
3c6e634f | 248 | int |
249 | neighborsCount(request_t * request) | |
090089c4 | 250 | { |
b69f7771 | 251 | peer *p = NULL; |
090089c4 | 252 | int count = 0; |
40a1495e | 253 | for (p = Config.peers; p; p = p->next) |
b69f7771 | 254 | if (peerWouldBePinged(p, request)) |
3c6e634f | 255 | count++; |
a3d5953d | 256 | debug(15, 3) ("neighborsCount: %d\n", count); |
3c6e634f | 257 | return count; |
258 | } | |
090089c4 | 259 | |
deb79f06 | 260 | peer * |
3c6e634f | 261 | getSingleParent(request_t * request) |
262 | { | |
deb79f06 | 263 | peer *p = NULL; |
b69f7771 | 264 | peer *q = NULL; |
40a1495e | 265 | for (q = Config.peers; q; q = q->next) { |
b69f7771 | 266 | if (!peerHTTPOkay(q, request)) |
caebbe00 | 267 | continue; |
b69f7771 | 268 | if (neighborType(q, request) != PEER_PARENT) |
3c6e634f | 269 | return NULL; /* oops, found SIBLING */ |
270 | if (p) | |
271 | return NULL; /* oops, found second parent */ | |
b69f7771 | 272 | p = q; |
090089c4 | 273 | } |
a3d5953d | 274 | debug(15, 3) ("getSingleParent: returning %s\n", p ? p->host : "NULL"); |
3c6e634f | 275 | return p; |
090089c4 | 276 | } |
277 | ||
deb79f06 | 278 | peer * |
b8d8561b | 279 | getFirstUpParent(request_t * request) |
090089c4 | 280 | { |
b69f7771 | 281 | peer *p = NULL; |
40a1495e | 282 | for (p = Config.peers; p; p = p->next) { |
b69f7771 | 283 | if (!neighborUp(p)) |
30a4f2a8 | 284 | continue; |
b69f7771 | 285 | if (neighborType(p, request) != PEER_PARENT) |
090089c4 | 286 | continue; |
b69f7771 | 287 | if (!peerHTTPOkay(p, request)) |
e924600d | 288 | continue; |
289 | break; | |
090089c4 | 290 | } |
a3d5953d | 291 | debug(15, 3) ("getFirstUpParent: returning %s\n", p ? p->host : "NULL"); |
b69f7771 | 292 | return p; |
090089c4 | 293 | } |
294 | ||
deb79f06 | 295 | peer * |
48b38d01 | 296 | getRoundRobinParent(request_t * request) |
297 | { | |
b69f7771 | 298 | peer *p; |
299 | peer *q = NULL; | |
40a1495e | 300 | for (p = Config.peers; p; p = p->next) { |
b69f7771 | 301 | if (!BIT_TEST(p->options, NEIGHBOR_ROUNDROBIN)) |
0c8177e6 | 302 | continue; |
b69f7771 | 303 | if (neighborType(p, request) != PEER_PARENT) |
0c8177e6 | 304 | continue; |
b69f7771 | 305 | if (!peerHTTPOkay(p, request)) |
48b38d01 | 306 | continue; |
b69f7771 | 307 | if (q && q->rr_count < p->rr_count) |
48b38d01 | 308 | continue; |
b69f7771 | 309 | q = p; |
48b38d01 | 310 | } |
b69f7771 | 311 | if (q) |
312 | q->rr_count++; | |
a3d5953d | 313 | debug(15, 3) ("getRoundRobinParent: returning %s\n", q ? q->host : "NULL"); |
b69f7771 | 314 | return q; |
48b38d01 | 315 | } |
316 | ||
deb79f06 | 317 | peer * |
5269d0bd | 318 | getDefaultParent(request_t * request) |
319 | { | |
b69f7771 | 320 | peer *p = NULL; |
40a1495e | 321 | for (p = Config.peers; p; p = p->next) { |
b69f7771 | 322 | if (neighborType(p, request) != PEER_PARENT) |
5269d0bd | 323 | continue; |
b69f7771 | 324 | if (!BIT_TEST(p->options, NEIGHBOR_DEFAULT_PARENT)) |
5269d0bd | 325 | continue; |
b69f7771 | 326 | if (!peerHTTPOkay(p, request)) |
5269d0bd | 327 | continue; |
a3d5953d | 328 | debug(15, 3) ("getDefaultParent: returning %s\n", p->host); |
b69f7771 | 329 | return p; |
5269d0bd | 330 | } |
331 | return NULL; | |
332 | } | |
333 | ||
88738790 | 334 | #ifdef HIER_EXPERIMENT |
335 | peer * | |
336 | getRandomParent(request_t * request) | |
337 | { | |
338 | peer *e; | |
339 | static peer *f = NULL; | |
340 | peer *next = f; | |
341 | int n = squid_random() % Peers.n; | |
342 | int x = n << 1; | |
343 | while (n && x--) { | |
344 | e = next ? next : Peers.peers_head; | |
345 | next = e->next; | |
346 | if (neighborType(e, request) != PEER_PARENT) | |
347 | continue; | |
348 | if (!peerHTTPOkay(e, request)) | |
349 | continue; | |
350 | f = e; | |
351 | n--; | |
352 | } | |
353 | if (f && !peerHTTPOkay(f, request)) | |
354 | return NULL; | |
355 | return f; | |
356 | } | |
357 | #endif | |
358 | ||
deb79f06 | 359 | peer * |
b69f7771 | 360 | getNextPeer(peer * p) |
090089c4 | 361 | { |
b69f7771 | 362 | return p->next; |
090089c4 | 363 | } |
364 | ||
deb79f06 | 365 | peer * |
366 | getFirstPeer(void) | |
090089c4 | 367 | { |
40a1495e | 368 | return Config.peers; |
090089c4 | 369 | } |
370 | ||
b8d8561b | 371 | static void |
deb79f06 | 372 | neighborRemove(peer * target) |
30a4f2a8 | 373 | { |
b69f7771 | 374 | peer *p = NULL; |
375 | peer **P = NULL; | |
40a1495e | 376 | p = Config.peers; |
377 | P = &Config.peers; | |
b69f7771 | 378 | while (p) { |
379 | if (target == p) | |
30a4f2a8 | 380 | break; |
b69f7771 | 381 | P = &p->next; |
382 | p = p->next; | |
383 | } | |
384 | if (p) { | |
385 | *P = p->next; | |
b69f7771 | 386 | peerDestroy(p); |
40a1495e | 387 | Config.npeers--; |
4d64d74a | 388 | } |
40a1495e | 389 | first_ping = Config.peers; |
4d64d74a | 390 | } |
391 | ||
b8d8561b | 392 | void |
393 | neighbors_open(int fd) | |
090089c4 | 394 | { |
30a4f2a8 | 395 | struct sockaddr_in name; |
30a4f2a8 | 396 | int len = sizeof(struct sockaddr_in); |
30a4f2a8 | 397 | struct servent *sep = NULL; |
30a4f2a8 | 398 | memset(&name, '\0', sizeof(struct sockaddr_in)); |
399 | if (getsockname(fd, (struct sockaddr *) &name, &len) < 0) | |
a3d5953d | 400 | debug(15, 1) ("getsockname(%d,%p,%p) failed.\n", fd, &name, &len); |
dd4bd44e | 401 | peerRefreshDNS(NULL); |
30a4f2a8 | 402 | if (0 == echo_hdr.opcode) { |
403 | echo_hdr.opcode = ICP_OP_SECHO; | |
404 | echo_hdr.version = ICP_VERSION_CURRENT; | |
405 | echo_hdr.length = 0; | |
406 | echo_hdr.reqnum = 0; | |
407 | echo_hdr.flags = 0; | |
408 | echo_hdr.pad = 0; | |
409 | /* memset(echo_hdr.auth, '\0', sizeof(u_num32) * ICP_AUTH_SIZE); */ | |
410 | echo_hdr.shostid = name.sin_addr.s_addr; | |
411 | sep = getservbyname("echo", "udp"); | |
412 | echo_port = sep ? ntohs((u_short) sep->s_port) : 7; | |
090089c4 | 413 | } |
414 | } | |
415 | ||
b8d8561b | 416 | int |
b6c0e933 | 417 | neighborsUdpPing(request_t * request, |
641941c0 | 418 | StoreEntry * entry, |
582b6456 | 419 | IRCB * callback, |
641941c0 | 420 | void *callback_data, |
421 | int *exprep) | |
090089c4 | 422 | { |
2cc3f720 | 423 | char *host = request->host; |
7b41ec97 | 424 | char *url = entry->url; |
b6c0e933 | 425 | MemObject *mem = entry->mem_obj; |
0ee4272b | 426 | const ipcache_addrs *ia = NULL; |
090089c4 | 427 | struct sockaddr_in to_addr; |
b69f7771 | 428 | peer *p = NULL; |
090089c4 | 429 | int i; |
1061b406 | 430 | int reqnum = 0; |
6d2296d4 | 431 | int flags; |
9dee2904 | 432 | icp_common_t *query; |
429fdbec | 433 | int queries_sent = 0; |
0a0bf5db | 434 | int peers_pinged = 0; |
090089c4 | 435 | |
40a1495e | 436 | if (Config.peers == NULL) |
090089c4 | 437 | return 0; |
af00901c | 438 | if (theOutIcpConnection < 0) { |
a3d5953d | 439 | debug(15, 0) ("neighborsUdpPing: There is no ICP socket!\n"); |
440 | debug(15, 0) ("Cannot query neighbors for '%s'.\n", url); | |
441 | debug(15, 0) ("Check 'icp_port' in your config file\n"); | |
af00901c | 442 | fatal_dump(NULL); |
443 | } | |
de61bd0b | 444 | if (entry->swap_status != NO_SWAP) |
15db12e9 | 445 | fatal_dump("neighborsUdpPing: bad swap_status"); |
429fdbec | 446 | mem->w_rtt = 0; |
447 | mem->e_pings_closest_parent = NULL; | |
448 | mem->p_rtt = 0; | |
b6c0e933 | 449 | mem->start_ping = current_time; |
450 | mem->icp_reply_callback = callback; | |
451 | mem->ircb_data = callback_data; | |
40a1495e | 452 | for (i = 0, p = first_ping; i++ < Config.npeers; p = p->next) { |
b69f7771 | 453 | if (p == NULL) |
40a1495e | 454 | p = Config.peers; |
a3d5953d | 455 | debug(15, 5) ("neighborsUdpPing: Peer %s\n", p->host); |
b69f7771 | 456 | if (!peerWouldBePinged(p, request)) |
deb79f06 | 457 | continue; /* next peer */ |
0a0bf5db | 458 | peers_pinged++; |
a3d5953d | 459 | debug(15, 4) ("neighborsUdpPing: pinging peer %s for '%s'\n", |
b69f7771 | 460 | p->host, url); |
461 | if (p->type == PEER_MULTICAST) | |
03a1ee42 | 462 | mcastSetTtl(theOutIcpConnection, p->mcast.ttl); |
69951dbc | 463 | reqnum = storeReqnum(entry, request->method); |
a3d5953d | 464 | debug(15, 3) ("neighborsUdpPing: key = '%s'\n", entry->key); |
465 | debug(15, 3) ("neighborsUdpPing: reqnum = %d\n", reqnum); | |
090089c4 | 466 | |
b69f7771 | 467 | if (p->icp_port == echo_port) { |
a3d5953d | 468 | debug(15, 4) ("neighborsUdpPing: Looks like a dumb cache, send DECHO ping\n"); |
1061b406 | 469 | echo_hdr.reqnum = reqnum; |
9dee2904 | 470 | query = icpCreateMessage(ICP_OP_DECHO, 0, url, reqnum, 0); |
af00901c | 471 | icpUdpSend(theOutIcpConnection, |
b69f7771 | 472 | &p->in_addr, |
9dee2904 | 473 | query, |
a528eb87 | 474 | LOG_TAG_NONE, |
475 | PROTO_NONE); | |
090089c4 | 476 | } else { |
6d2296d4 | 477 | flags = 0; |
478 | /* check if we should set ICP_FLAG_HIT_OBJ */ | |
479 | if (opt_udp_hit_obj) | |
2cc3f720 | 480 | if (!BIT_TEST(request->flags, REQ_NOCACHE)) |
b69f7771 | 481 | if (p->icp_version == ICP_VERSION_2) |
6d2296d4 | 482 | flags |= ICP_FLAG_HIT_OBJ; |
17a0a4ee | 483 | if (Config.onoff.query_icmp) |
b69f7771 | 484 | if (p->icp_version == ICP_VERSION_2) |
429fdbec | 485 | flags |= ICP_FLAG_SRC_RTT; |
9dee2904 | 486 | query = icpCreateMessage(ICP_OP_QUERY, flags, url, reqnum, 0); |
af00901c | 487 | icpUdpSend(theOutIcpConnection, |
b69f7771 | 488 | &p->in_addr, |
9dee2904 | 489 | query, |
a528eb87 | 490 | LOG_TAG_NONE, |
491 | PROTO_NONE); | |
090089c4 | 492 | } |
429fdbec | 493 | queries_sent++; |
090089c4 | 494 | |
b69f7771 | 495 | p->stats.ack_deficit++; |
496 | p->stats.pings_sent++; | |
a3d5953d | 497 | debug(15, 3) ("neighborsUdpPing: %s: ack_deficit = %d\n", |
b69f7771 | 498 | p->host, p->stats.ack_deficit); |
499 | if (p->type == PEER_MULTICAST) { | |
500 | p->stats.ack_deficit = 0; | |
501 | (*exprep) += p->mcast.n_replies_expected; | |
502 | } else if (neighborUp(p)) { | |
1061b406 | 503 | /* its alive, expect a reply from it */ |
b6c0e933 | 504 | (*exprep)++; |
090089c4 | 505 | } else { |
1061b406 | 506 | /* Neighbor is dead; ping it anyway, but don't expect a reply */ |
090089c4 | 507 | /* log it once at the threshold */ |
b69f7771 | 508 | if ((p->stats.ack_deficit == HIER_MAX_DEFICIT)) { |
a3d5953d | 509 | debug(15, 0) ("Detected DEAD %s: %s/%d/%d\n", |
b69f7771 | 510 | neighborTypeStr(p), |
511 | p->host, p->http_port, p->icp_port); | |
090089c4 | 512 | } |
513 | } | |
090089c4 | 514 | } |
40a1495e | 515 | if ((first_ping = first_ping->next) == NULL) |
516 | first_ping = Config.peers; | |
090089c4 | 517 | |
518 | /* only do source_ping if we have neighbors */ | |
40a1495e | 519 | if (Config.npeers) { |
17a0a4ee | 520 | if (!Config.onoff.source_ping) { |
a3d5953d | 521 | debug(15, 6) ("neighborsUdpPing: Source Ping is disabled.\n"); |
0a0bf5db | 522 | } else if ((ia = ipcache_gethostbyname(host, 0))) { |
a3d5953d | 523 | debug(15, 6) ("neighborsUdpPing: Source Ping: to %s for '%s'\n", |
1061b406 | 524 | host, url); |
1061b406 | 525 | echo_hdr.reqnum = reqnum; |
16b204c4 | 526 | if (icmp_sock != -1) { |
e5f6c5c2 | 527 | icmpSourcePing(ia->in_addrs[ia->cur], &echo_hdr, url); |
16b204c4 | 528 | } else { |
529 | to_addr.sin_family = AF_INET; | |
e5f6c5c2 | 530 | to_addr.sin_addr = ia->in_addrs[ia->cur]; |
16b204c4 | 531 | to_addr.sin_port = htons(echo_port); |
9dee2904 | 532 | query = icpCreateMessage(ICP_OP_SECHO, 0, url, reqnum, 0); |
16b204c4 | 533 | icpUdpSend(theOutIcpConnection, |
16b204c4 | 534 | &to_addr, |
9dee2904 | 535 | query, |
16b204c4 | 536 | LOG_TAG_NONE, |
537 | PROTO_NONE); | |
538 | } | |
090089c4 | 539 | } else { |
a3d5953d | 540 | debug(15, 6) ("neighborsUdpPing: Source Ping: unknown host: %s\n", |
1061b406 | 541 | host); |
090089c4 | 542 | } |
543 | } | |
429fdbec | 544 | #if LOG_ICP_NUMBERS |
545 | request->hierarchy.n_sent = peers_pinged; | |
546 | request->hierarchy.n_expect = *exprep; | |
547 | #endif | |
0a0bf5db | 548 | return peers_pinged; |
090089c4 | 549 | } |
550 | ||
d73844ca | 551 | static void |
b69f7771 | 552 | neighborAlive(peer * p, const MemObject * mem, const icp_common_t * header) |
4eda6afe | 553 | { |
554 | int rtt; | |
555 | int n; | |
556 | /* Neighbor is alive, reset the ack deficit */ | |
b69f7771 | 557 | if (p->stats.ack_deficit >= HIER_MAX_DEFICIT) { |
a3d5953d | 558 | debug(15, 0) ("Detected REVIVED %s: %s/%d/%d\n", |
b69f7771 | 559 | neighborTypeStr(p), |
560 | p->host, p->http_port, p->icp_port); | |
4eda6afe | 561 | } |
b69f7771 | 562 | p->stats.ack_deficit = 0; |
563 | n = ++p->stats.pings_acked; | |
4eda6afe | 564 | if ((icp_opcode) header->opcode <= ICP_OP_END) |
b69f7771 | 565 | p->stats.counts[header->opcode]++; |
4eda6afe | 566 | if (mem) { |
567 | rtt = tvSubMsec(mem->start_ping, current_time); | |
9e4ad609 | 568 | p->stats.rtt = intAverage(p->stats.rtt, rtt, n, RTT_AV_FACTOR); |
b69f7771 | 569 | p->icp_version = (int) header->version; |
4eda6afe | 570 | } |
571 | } | |
090089c4 | 572 | |
38792624 | 573 | static void |
b69f7771 | 574 | neighborCountIgnored(peer * p, icp_opcode op_unused) |
a7e59001 | 575 | { |
b69f7771 | 576 | if (p == NULL) |
a7e59001 | 577 | return; |
b69f7771 | 578 | p->stats.ignored_replies++; |
c7a3724d | 579 | NLateReplies++; |
a7e59001 | 580 | } |
581 | ||
429fdbec | 582 | /* ignoreMulticastReply |
583 | * | |
584 | * We want to ignore replies from multicast peers if the | |
585 | * cache_host_domain rules would normally prevent the peer | |
586 | * from being used | |
587 | */ | |
588 | static int | |
b69f7771 | 589 | ignoreMulticastReply(peer * p, MemObject * mem) |
429fdbec | 590 | { |
b69f7771 | 591 | if (p == NULL) |
429fdbec | 592 | return 0; |
b69f7771 | 593 | if (!BIT_TEST(p->options, NEIGHBOR_MCAST_RESPONDER)) |
429fdbec | 594 | return 0; |
b69f7771 | 595 | if (peerHTTPOkay(p, mem->request)) |
429fdbec | 596 | return 0; |
597 | return 1; | |
598 | } | |
599 | ||
600 | /* I should attach these records to the entry. We take the first | |
601 | * hit we get our wait until everyone misses. The timeout handler | |
602 | * call needs to nip this shopping list or call one of the misses. | |
603 | * | |
604 | * If a hit process is already started, then sobeit | |
605 | */ | |
b8d8561b | 606 | void |
fe4e214f | 607 | neighborsUdpAck(int fd, const char *url, icp_common_t * header, const struct sockaddr_in *from, StoreEntry * entry, char *data, int data_sz) |
090089c4 | 608 | { |
b69f7771 | 609 | peer *p = NULL; |
30a4f2a8 | 610 | MemObject *mem = entry->mem_obj; |
b6c0e933 | 611 | peer_t ntype = PEER_NONE; |
5e5126cc | 612 | char *opcode_d; |
a7e59001 | 613 | icp_opcode opcode = (icp_opcode) header->opcode; |
090089c4 | 614 | |
a3d5953d | 615 | debug(15, 6) ("neighborsUdpAck: opcode %d '%s'\n", (int) opcode, url); |
b69f7771 | 616 | if ((p = whichPeer(from))) |
617 | neighborAlive(p, mem, header); | |
a7e59001 | 618 | if (opcode > ICP_OP_END) |
d2af9477 | 619 | return; |
a7e59001 | 620 | opcode_d = IcpOpcodeStr[opcode]; |
2d1c6a4f | 621 | /* check if someone is already fetching it */ |
622 | if (BIT_TEST(entry->flag, ENTRY_DISPATCHED)) { | |
a3d5953d | 623 | debug(15, 3) ("neighborsUdpAck: '%s' already being fetched.\n", url); |
b69f7771 | 624 | neighborCountIgnored(p, opcode); |
d2af9477 | 625 | return; |
626 | } | |
2d1c6a4f | 627 | if (mem == NULL) { |
a3d5953d | 628 | debug(15, 2) ("Ignoring %s for missing mem_obj: %s\n", opcode_d, url); |
b69f7771 | 629 | neighborCountIgnored(p, opcode); |
8de2f7ad | 630 | return; |
631 | } | |
632 | if (entry->ping_status != PING_WAITING) { | |
a3d5953d | 633 | debug(15, 2) ("neighborsUdpAck: Unexpected %s for %s\n", opcode_d, url); |
b69f7771 | 634 | neighborCountIgnored(p, opcode); |
8de2f7ad | 635 | return; |
636 | } | |
4eda6afe | 637 | if (entry->lock_count == 0) { |
a3d5953d | 638 | debug(12, 1) ("neighborsUdpAck: '%s' has no locks\n", url); |
b69f7771 | 639 | neighborCountIgnored(p, opcode); |
4eda6afe | 640 | return; |
090089c4 | 641 | } |
a3d5953d | 642 | debug(15, 3) ("neighborsUdpAck: %s for '%s' from %s \n", |
b69f7771 | 643 | opcode_d, url, p ? p->host : "source"); |
644 | if (p) | |
645 | ntype = neighborType(p, mem->request); | |
646 | if (ignoreMulticastReply(p, mem)) { | |
647 | neighborCountIgnored(p, opcode); | |
429fdbec | 648 | } else if (opcode == ICP_OP_SECHO) { |
649 | /* Received source-ping reply */ | |
b69f7771 | 650 | if (p) { |
a3d5953d | 651 | debug(15, 1) ("Ignoring SECHO from neighbor %s\n", p->host); |
b69f7771 | 652 | neighborCountIgnored(p, opcode); |
429fdbec | 653 | } else { |
654 | /* if we reach here, source-ping reply is the first 'parent', | |
655 | * so fetch directly from the source */ | |
a3d5953d | 656 | debug(15, 6) ("Source is the first to respond.\n"); |
4f92c80c | 657 | mem->icp_reply_callback(NULL, ntype, opcode, mem->ircb_data); |
429fdbec | 658 | } |
659 | } else if (opcode == ICP_OP_MISS) { | |
b69f7771 | 660 | if (p == NULL) { |
a3d5953d | 661 | debug(15, 1) ("Ignoring MISS from non-peer %s\n", |
a99f5332 | 662 | inet_ntoa(from->sin_addr)); |
93775f90 | 663 | } else if (ntype != PEER_PARENT) { |
664 | (void) 0; /* ignore MISS from non-parent */ | |
d2af9477 | 665 | } else { |
b69f7771 | 666 | mem->icp_reply_callback(p, ntype, opcode, mem->ircb_data); |
30a4f2a8 | 667 | } |
93775f90 | 668 | } else if (opcode == ICP_OP_HIT || opcode == ICP_OP_HIT_OBJ) { |
b69f7771 | 669 | if (p == NULL) { |
a3d5953d | 670 | debug(15, 1) ("Ignoring HIT from non-peer %s\n", |
004b3381 | 671 | inet_ntoa(from->sin_addr)); |
d2af9477 | 672 | } else { |
b69f7771 | 673 | mem->icp_reply_callback(p, ntype, ICP_OP_HIT, mem->ircb_data); |
090089c4 | 674 | } |
a7e59001 | 675 | } else if (opcode == ICP_OP_DECHO) { |
b69f7771 | 676 | if (p == NULL) { |
a3d5953d | 677 | debug(15, 1) ("Ignoring DECHO from non-peer %s\n", |
004b3381 | 678 | inet_ntoa(from->sin_addr)); |
deb79f06 | 679 | } else if (ntype == PEER_SIBLING) { |
5e604a0e | 680 | debug_trap("neighborsUdpAck: Found non-ICP cache as SIBLING\n"); |
681 | debug_trap("neighborsUdpAck: non-ICP neighbors must be a PARENT\n"); | |
090089c4 | 682 | } else { |
b69f7771 | 683 | mem->icp_reply_callback(p, ntype, opcode, mem->ircb_data); |
090089c4 | 684 | } |
93775f90 | 685 | } else if (opcode == ICP_OP_SECHO) { |
b69f7771 | 686 | if (p) { |
a3d5953d | 687 | debug(15, 1) ("Ignoring SECHO from neighbor %s\n", p->host); |
b69f7771 | 688 | neighborCountIgnored(p, opcode); |
17a0a4ee | 689 | } else if (!Config.onoff.source_ping) { |
a3d5953d | 690 | debug(15, 1) ("Unsolicited SECHO from %s\n", inet_ntoa(from->sin_addr)); |
1327c792 | 691 | } else { |
b6c0e933 | 692 | mem->icp_reply_callback(NULL, ntype, opcode, mem->ircb_data); |
090089c4 | 693 | } |
a7e59001 | 694 | } else if (opcode == ICP_OP_DENIED) { |
b69f7771 | 695 | if (p == NULL) { |
a3d5953d | 696 | debug(15, 1) ("Ignoring DENIED from non-peer %s\n", |
004b3381 | 697 | inet_ntoa(from->sin_addr)); |
b69f7771 | 698 | } else if (p->stats.pings_acked > 100) { |
699 | if (100 * p->stats.counts[ICP_OP_DENIED] / p->stats.pings_acked > 95) { | |
a3d5953d | 700 | debug(15, 0) ("95%% of replies from '%s' are UDP_DENIED\n", p->host); |
701 | debug(15, 0) ("Disabling '%s', please check your configuration.\n", p->host); | |
b69f7771 | 702 | neighborRemove(p); |
703 | p = NULL; | |
e006d372 | 704 | } else { |
b69f7771 | 705 | neighborCountIgnored(p, opcode); |
30a4f2a8 | 706 | } |
707 | } | |
429fdbec | 708 | } else if (opcode == ICP_OP_MISS_NOFETCH) { |
b69f7771 | 709 | mem->icp_reply_callback(p, ntype, opcode, mem->ircb_data); |
090089c4 | 710 | } else { |
a3d5953d | 711 | debug(15, 0) ("neighborsUdpAck: Unexpected ICP reply: %s\n", opcode_d); |
d2af9477 | 712 | } |
090089c4 | 713 | } |
714 | ||
deb79f06 | 715 | peer * |
40a1495e | 716 | peerFindByName(const char *name) |
98ffb7e4 | 717 | { |
b69f7771 | 718 | peer *p = NULL; |
40a1495e | 719 | for (p = Config.peers; p; p = p->next) { |
b69f7771 | 720 | if (!strcasecmp(name, p->host)) |
98ffb7e4 | 721 | break; |
722 | } | |
b69f7771 | 723 | return p; |
98ffb7e4 | 724 | } |
b012353a | 725 | |
5269d0bd | 726 | int |
b69f7771 | 727 | neighborUp(const peer * p) |
5269d0bd | 728 | { |
b69f7771 | 729 | if (!p->tcp_up) |
e924600d | 730 | return 0; |
b69f7771 | 731 | if (p->stats.ack_deficit >= HIER_MAX_DEFICIT) |
5269d0bd | 732 | return 0; |
733 | return 1; | |
734 | } | |
735 | ||
e6e3b09b | 736 | void |
b69f7771 | 737 | peerDestroy(peer * p) |
e6e3b09b | 738 | { |
ee4a1f5d | 739 | struct _domain_ping *l = NULL; |
740 | struct _domain_ping *nl = NULL; | |
b69f7771 | 741 | if (p == NULL) |
3c6e634f | 742 | return; |
88738790 | 743 | if (p->ck_conn_event_pend) |
b69f7771 | 744 | eventDelete(peerCheckConnect, p); |
745 | if (p->type == PEER_MULTICAST) { | |
746 | if (p->mcast.flags & PEER_COUNT_EVENT_PENDING) | |
747 | eventDelete(peerCountMcastPeersStart, p); | |
748 | if (p->mcast.flags & PEER_COUNTING) | |
749 | eventDelete(peerCountMcastPeersDone, p); | |
750 | } | |
751 | for (l = p->pinglist; l; l = nl) { | |
ee4a1f5d | 752 | nl = l->next; |
753 | safe_free(l->domain); | |
754 | safe_free(l); | |
755 | } | |
8407afee | 756 | if (p->ip_lookup_pending) |
270b86af | 757 | ipcacheUnregister(p->host, p); |
b69f7771 | 758 | safe_free(p->host); |
8407afee | 759 | cbdataFree(p); |
e6e3b09b | 760 | } |
c7a3724d | 761 | |
dd4bd44e | 762 | static void |
03a1ee42 | 763 | peerDNSConfigure(const ipcache_addrs * ia, void *data) |
dd4bd44e | 764 | { |
b69f7771 | 765 | peer *p = data; |
dd4bd44e | 766 | struct sockaddr_in *ap; |
767 | int j; | |
8407afee | 768 | p->ip_lookup_pending = 0; |
b69f7771 | 769 | if (p->n_addresses == 0) { |
a3d5953d | 770 | debug(15, 1) ("Configuring %s %s/%d/%d\n", neighborTypeStr(p), |
b69f7771 | 771 | p->host, p->http_port, p->icp_port); |
772 | if (p->type == PEER_MULTICAST) | |
a3d5953d | 773 | debug(15, 1) (" Multicast TTL = %d\n", p->mcast.ttl); |
b69f7771 | 774 | } |
775 | p->n_addresses = 0; | |
dd4bd44e | 776 | if (ia == NULL) { |
a3d5953d | 777 | debug(0, 0) ("WARNING: DNS lookup for '%s' failed!\n", p->host); |
dd4bd44e | 778 | return; |
779 | } | |
c04fe656 | 780 | if ((int) ia->count < 1) { |
a3d5953d | 781 | debug(0, 0) ("WARNING: No IP address found for '%s'!\n", p->host); |
dd4bd44e | 782 | return; |
783 | } | |
c04fe656 | 784 | for (j = 0; j < (int) ia->count && j < PEER_MAX_ADDRESSES; j++) { |
b69f7771 | 785 | p->addresses[j] = ia->in_addrs[j]; |
a3d5953d | 786 | debug(15, 2) ("--> IP address #%d: %s\n", j, inet_ntoa(p->addresses[j])); |
b69f7771 | 787 | p->n_addresses++; |
dd4bd44e | 788 | } |
b69f7771 | 789 | ap = &p->in_addr; |
dd4bd44e | 790 | memset(ap, '\0', sizeof(struct sockaddr_in)); |
791 | ap->sin_family = AF_INET; | |
b69f7771 | 792 | ap->sin_addr = p->addresses[0]; |
793 | ap->sin_port = htons(p->icp_port); | |
794 | if (p->type == PEER_MULTICAST) | |
795 | peerCountMcastPeersSchedule(p, 10); | |
dd4bd44e | 796 | } |
797 | ||
798 | static void | |
799 | peerRefreshDNS(void *junk) | |
800 | { | |
b69f7771 | 801 | peer *p = NULL; |
40a1495e | 802 | peer *next = Config.peers; |
b69f7771 | 803 | while ((p = next)) { |
804 | next = p->next; | |
270b86af | 805 | p->ip_lookup_pending = 1; |
429fdbec | 806 | /* some random, bogus FD for ipcache */ |
03a1ee42 | 807 | p->test_fd = Squid_MaxFD + current_time.tv_usec; |
8407afee | 808 | ipcache_nbgethostbyname(p->host, peerDNSConfigure, p); |
dd4bd44e | 809 | } |
810 | /* Reconfigure the peers every hour */ | |
811 | eventAdd("peerRefreshDNS", peerRefreshDNS, NULL, 3600); | |
812 | } | |
e924600d | 813 | |
814 | static void | |
815 | peerCheckConnect(void *data) | |
816 | { | |
817 | peer *p = data; | |
818 | int fd; | |
88738790 | 819 | if (p->ck_conn_event_pend != 1) |
820 | debug_trap("bad ck_conn_event_pend counter"); | |
821 | p->ck_conn_event_pend--; | |
e924600d | 822 | fd = comm_open(SOCK_STREAM, 0, Config.Addrs.tcp_outgoing, |
823 | 0, COMM_NONBLOCKING, p->host); | |
824 | if (fd < 0) | |
825 | return; | |
8407afee | 826 | p->ip_lookup_pending = 1; |
03a1ee42 | 827 | p->test_fd = fd; |
8407afee | 828 | ipcache_nbgethostbyname(p->host, peerCheckConnect2, p); |
e924600d | 829 | } |
830 | ||
831 | static void | |
03a1ee42 | 832 | peerCheckConnect2(const ipcache_addrs * ia, void *data) |
e924600d | 833 | { |
834 | peer *p = data; | |
8407afee | 835 | p->ip_lookup_pending = 0; |
03a1ee42 | 836 | commConnectStart(p->test_fd, |
e924600d | 837 | p->host, |
838 | p->http_port, | |
839 | peerCheckConnectDone, | |
840 | p); | |
841 | } | |
842 | ||
843 | static void | |
844 | peerCheckConnectDone(int fd, int status, void *data) | |
845 | { | |
846 | peer *p = data; | |
847 | p->tcp_up = status == COMM_OK ? 1 : 0; | |
848 | if (p->tcp_up) { | |
a3d5953d | 849 | debug(15, 0) ("TCP connection to %s/%d succeeded\n", |
e924600d | 850 | p->host, p->http_port); |
851 | } else { | |
88738790 | 852 | p->ck_conn_event_pend++; |
e924600d | 853 | eventAdd("peerCheckConnect", peerCheckConnect, p, 80); |
854 | } | |
855 | comm_close(fd); | |
856 | return; | |
857 | } | |
858 | ||
859 | void | |
860 | peerCheckConnectStart(peer * p) | |
861 | { | |
862 | if (!p->tcp_up) | |
863 | return; | |
a3d5953d | 864 | debug(15, 0) ("TCP connection to %s/%d failed\n", p->host, p->http_port); |
e924600d | 865 | p->tcp_up = 0; |
866 | p->last_fail_time = squid_curtime; | |
88738790 | 867 | p->ck_conn_event_pend++; |
e924600d | 868 | eventAdd("peerCheckConnect", peerCheckConnect, p, 80); |
869 | } | |
429fdbec | 870 | |
871 | static void | |
872 | peerCountMcastPeersSchedule(peer * p, time_t when) | |
873 | { | |
874 | if (p->mcast.flags & PEER_COUNT_EVENT_PENDING) | |
875 | return; | |
876 | eventAdd("peerCountMcastPeersStart", | |
877 | peerCountMcastPeersStart, | |
878 | p, | |
879 | when); | |
880 | p->mcast.flags |= PEER_COUNT_EVENT_PENDING; | |
881 | } | |
882 | ||
883 | static void | |
884 | peerCountMcastPeersStart(void *data) | |
885 | { | |
886 | peer *p = data; | |
887 | ps_state *psstate = xcalloc(1, sizeof(ps_state)); | |
888 | StoreEntry *fake; | |
889 | MemObject *mem; | |
890 | icp_common_t *query; | |
891 | LOCAL_ARRAY(char, url, MAX_URL); | |
892 | if (p->type != PEER_MULTICAST) | |
893 | fatal_dump("peerCountMcastPeersStart: non-multicast peer"); | |
894 | p->mcast.flags &= ~PEER_COUNT_EVENT_PENDING; | |
895 | sprintf(url, "http://%s/", inet_ntoa(p->in_addr.sin_addr)); | |
88738790 | 896 | fake = storeCreateEntry(url, url, 0, METHOD_GET); |
429fdbec | 897 | psstate->request = requestLink(urlParse(METHOD_GET, url)); |
898 | psstate->entry = fake; | |
899 | psstate->callback = NULL; | |
900 | psstate->fail_callback = NULL; | |
901 | psstate->callback_data = p; | |
902 | psstate->icp.start = current_time; | |
903 | mem = fake->mem_obj; | |
2db609de | 904 | mem->request = requestLink(psstate->request); |
429fdbec | 905 | mem->start_ping = current_time; |
906 | mem->icp_reply_callback = peerCountHandleIcpReply; | |
907 | mem->ircb_data = psstate; | |
03a1ee42 | 908 | mcastSetTtl(theOutIcpConnection, p->mcast.ttl); |
429fdbec | 909 | p->mcast.reqnum = storeReqnum(fake, METHOD_GET); |
910 | query = icpCreateMessage(ICP_OP_QUERY, 0, url, p->mcast.reqnum, 0); | |
911 | icpUdpSend(theOutIcpConnection, | |
912 | &p->in_addr, | |
913 | query, | |
914 | LOG_TAG_NONE, | |
915 | PROTO_NONE); | |
916 | fake->ping_status = PING_WAITING; | |
917 | eventAdd("peerCountMcastPeersDone", | |
918 | peerCountMcastPeersDone, | |
2db609de | 919 | psstate, |
429fdbec | 920 | Config.neighborTimeout); |
921 | p->mcast.flags |= PEER_COUNTING; | |
922 | peerCountMcastPeersSchedule(p, MCAST_COUNT_RATE); | |
923 | } | |
924 | ||
925 | static void | |
926 | peerCountMcastPeersDone(void *data) | |
927 | { | |
928 | ps_state *psstate = data; | |
929 | peer *p = psstate->callback_data; | |
930 | StoreEntry *fake = psstate->entry; | |
429fdbec | 931 | p->mcast.flags &= ~PEER_COUNTING; |
9e4ad609 | 932 | p->mcast.avg_n_members = doubleAverage(p->mcast.avg_n_members, |
933 | (double) psstate->icp.n_recv, | |
934 | ++p->mcast.n_times_counted, | |
935 | 10); | |
a3d5953d | 936 | debug(15, 1) ("Group %s: %d replies, %4.1f average\n", |
429fdbec | 937 | p->host, |
938 | psstate->icp.n_recv, | |
939 | p->mcast.avg_n_members); | |
940 | p->mcast.n_replies_expected = (int) p->mcast.avg_n_members; | |
941 | fake->store_status = STORE_ABORTED; | |
e7a22b88 | 942 | requestUnlink(fake->mem_obj->request); |
f0d5043e | 943 | fake->mem_obj->request = NULL; |
429fdbec | 944 | storeReleaseRequest(fake); |
945 | storeUnlockObject(fake); | |
e7a22b88 | 946 | requestUnlink(psstate->request); |
2db609de | 947 | xfree(psstate); |
429fdbec | 948 | } |
949 | ||
950 | static void | |
951 | peerCountHandleIcpReply(peer * p, peer_t type, icp_opcode op, void *data) | |
952 | { | |
953 | ps_state *psstate = data; | |
954 | psstate->icp.n_recv++; | |
429fdbec | 955 | } |