Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Proxy variables and functions. |
| 3 | * |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 4 | * Copyright 2000-2009 Willy Tarreau <w@1wt.eu> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | */ |
| 12 | |
| 13 | #include <fcntl.h> |
| 14 | #include <unistd.h> |
Willy Tarreau | c8f24f8 | 2007-11-30 18:38:35 +0100 | [diff] [blame] | 15 | #include <string.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 16 | #include <sys/types.h> |
| 17 | #include <sys/socket.h> |
| 18 | #include <sys/stat.h> |
| 19 | |
Willy Tarreau | 2dd0d47 | 2006-06-29 17:53:05 +0200 | [diff] [blame] | 20 | #include <common/defaults.h> |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 21 | #include <common/cfgparse.h> |
Willy Tarreau | 2dd0d47 | 2006-06-29 17:53:05 +0200 | [diff] [blame] | 22 | #include <common/compat.h> |
Willy Tarreau | e3ba5f0 | 2006-06-29 18:54:54 +0200 | [diff] [blame] | 23 | #include <common/config.h> |
Willy Tarreau | d740bab | 2007-10-28 11:14:07 +0100 | [diff] [blame] | 24 | #include <common/errors.h> |
Willy Tarreau | 4d2d098 | 2007-05-14 00:39:29 +0200 | [diff] [blame] | 25 | #include <common/memory.h> |
Willy Tarreau | 2dd0d47 | 2006-06-29 17:53:05 +0200 | [diff] [blame] | 26 | #include <common/time.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 27 | |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame] | 28 | #include <eb32tree.h> |
| 29 | #include <ebistree.h> |
| 30 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 31 | #include <types/global.h> |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 32 | #include <types/obj_type.h> |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 33 | #include <types/peers.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 34 | |
Alexandre Cassen | 87ea548 | 2007-10-11 20:48:58 +0200 | [diff] [blame] | 35 | #include <proto/backend.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 36 | #include <proto/fd.h> |
Willy Tarreau | 51aecc7 | 2009-07-12 09:47:04 +0200 | [diff] [blame] | 37 | #include <proto/hdr_idx.h> |
Willy Tarreau | d1d5454 | 2012-09-12 22:58:11 +0200 | [diff] [blame] | 38 | #include <proto/listener.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 39 | #include <proto/log.h> |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 40 | #include <proto/proto_tcp.h> |
Willy Tarreau | 39e4f62 | 2010-05-31 17:01:36 +0200 | [diff] [blame] | 41 | #include <proto/proto_http.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 42 | #include <proto/proxy.h> |
Willy Tarreau | d0807c3 | 2010-08-27 18:26:11 +0200 | [diff] [blame] | 43 | #include <proto/signal.h> |
Willy Tarreau | fb0afa7 | 2015-04-03 14:46:27 +0200 | [diff] [blame] | 44 | #include <proto/stream.h> |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 45 | #include <proto/task.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 46 | |
| 47 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 48 | int listeners; /* # of proxy listeners, set by cfgparse */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 49 | struct proxy *proxy = NULL; /* list of all existing proxies */ |
Willy Tarreau | 53fb4ae | 2009-10-04 23:04:08 +0200 | [diff] [blame] | 50 | struct eb_root used_proxy_id = EB_ROOT; /* list of proxy IDs in use */ |
Willy Tarreau | f79d950 | 2014-03-15 07:22:35 +0100 | [diff] [blame] | 51 | struct eb_root proxy_by_name = EB_ROOT; /* tree of proxies sorted by name */ |
Willy Tarreau | 10479e4 | 2010-12-12 14:00:34 +0100 | [diff] [blame] | 52 | unsigned int error_snapshot_id = 0; /* global ID assigned to each error then incremented */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 53 | |
Willy Tarreau | 977b8e4 | 2006-12-29 14:19:17 +0100 | [diff] [blame] | 54 | /* |
Willy Tarreau | 816eb54 | 2007-11-04 07:04:43 +0100 | [diff] [blame] | 55 | * This function returns a string containing a name describing capabilities to |
| 56 | * report comprehensible error messages. Specifically, it will return the words |
| 57 | * "frontend", "backend", "ruleset" when appropriate, or "proxy" for all other |
| 58 | * cases including the proxies declared in "listen" mode. |
Willy Tarreau | 977b8e4 | 2006-12-29 14:19:17 +0100 | [diff] [blame] | 59 | */ |
Willy Tarreau | 816eb54 | 2007-11-04 07:04:43 +0100 | [diff] [blame] | 60 | const char *proxy_cap_str(int cap) |
Willy Tarreau | 977b8e4 | 2006-12-29 14:19:17 +0100 | [diff] [blame] | 61 | { |
Willy Tarreau | 816eb54 | 2007-11-04 07:04:43 +0100 | [diff] [blame] | 62 | if ((cap & PR_CAP_LISTEN) != PR_CAP_LISTEN) { |
| 63 | if (cap & PR_CAP_FE) |
| 64 | return "frontend"; |
| 65 | else if (cap & PR_CAP_BE) |
| 66 | return "backend"; |
| 67 | else if (cap & PR_CAP_RS) |
| 68 | return "ruleset"; |
| 69 | } |
| 70 | return "proxy"; |
Willy Tarreau | 977b8e4 | 2006-12-29 14:19:17 +0100 | [diff] [blame] | 71 | } |
| 72 | |
Krzysztof Piotr Oledzki | 6eb730d | 2007-11-03 23:41:58 +0100 | [diff] [blame] | 73 | /* |
| 74 | * This function returns a string containing the mode of the proxy in a format |
| 75 | * suitable for error messages. |
| 76 | */ |
Krzysztof Piotr Oledzki | 6eb730d | 2007-11-03 23:41:58 +0100 | [diff] [blame] | 77 | const char *proxy_mode_str(int mode) { |
| 78 | |
| 79 | if (mode == PR_MODE_TCP) |
| 80 | return "tcp"; |
| 81 | else if (mode == PR_MODE_HTTP) |
| 82 | return "http"; |
| 83 | else if (mode == PR_MODE_HEALTH) |
| 84 | return "health"; |
| 85 | else |
| 86 | return "unknown"; |
| 87 | } |
| 88 | |
Willy Tarreau | f395017 | 2009-10-10 18:35:51 +0200 | [diff] [blame] | 89 | /* |
| 90 | * This function scans the list of backends and servers to retrieve the first |
| 91 | * backend and the first server with the given names, and sets them in both |
| 92 | * parameters. It returns zero if either is not found, or non-zero and sets |
| 93 | * the ones it did not found to NULL. If a NULL pointer is passed for the |
| 94 | * backend, only the pointer to the server will be updated. |
| 95 | */ |
| 96 | int get_backend_server(const char *bk_name, const char *sv_name, |
| 97 | struct proxy **bk, struct server **sv) |
| 98 | { |
| 99 | struct proxy *p; |
| 100 | struct server *s; |
Willy Tarreau | 7ecc420 | 2014-03-15 07:57:11 +0100 | [diff] [blame] | 101 | int sid; |
Willy Tarreau | f395017 | 2009-10-10 18:35:51 +0200 | [diff] [blame] | 102 | |
| 103 | *sv = NULL; |
| 104 | |
Willy Tarreau | 050536d | 2012-10-04 08:47:34 +0200 | [diff] [blame] | 105 | sid = -1; |
Willy Tarreau | cfeaa47 | 2009-10-10 22:33:08 +0200 | [diff] [blame] | 106 | if (*sv_name == '#') |
| 107 | sid = atoi(sv_name + 1); |
| 108 | |
Willy Tarreau | 9e0bb10 | 2015-05-26 11:24:42 +0200 | [diff] [blame] | 109 | p = proxy_be_by_name(bk_name); |
Willy Tarreau | f395017 | 2009-10-10 18:35:51 +0200 | [diff] [blame] | 110 | if (bk) |
| 111 | *bk = p; |
| 112 | if (!p) |
| 113 | return 0; |
| 114 | |
| 115 | for (s = p->srv; s; s = s->next) |
Willy Tarreau | 4055a10 | 2012-11-15 00:15:18 +0100 | [diff] [blame] | 116 | if ((sid >= 0 && s->puid == sid) || |
| 117 | (sid < 0 && strcmp(s->id, sv_name) == 0)) |
Willy Tarreau | f395017 | 2009-10-10 18:35:51 +0200 | [diff] [blame] | 118 | break; |
| 119 | *sv = s; |
| 120 | if (!s) |
| 121 | return 0; |
| 122 | return 1; |
| 123 | } |
| 124 | |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 125 | /* This function parses a "timeout" statement in a proxy section. It returns |
| 126 | * -1 if there is any error, 1 for a warning, otherwise zero. If it does not |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 127 | * return zero, it will write an error or warning message into a preallocated |
| 128 | * buffer returned at <err>. The trailing is not be written. The function must |
| 129 | * be called with <args> pointing to the first command line word, with <proxy> |
| 130 | * pointing to the proxy being parsed, and <defpx> to the default proxy or NULL. |
| 131 | * As a special case for compatibility with older configs, it also accepts |
| 132 | * "{cli|srv|con}timeout" in args[0]. |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 133 | */ |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 134 | static int proxy_parse_timeout(char **args, int section, struct proxy *proxy, |
Willy Tarreau | 28a47d6 | 2012-09-18 20:02:48 +0200 | [diff] [blame] | 135 | struct proxy *defpx, const char *file, int line, |
| 136 | char **err) |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 137 | { |
| 138 | unsigned timeout; |
| 139 | int retval, cap; |
| 140 | const char *res, *name; |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 141 | int *tv = NULL; |
| 142 | int *td = NULL; |
Willy Tarreau | ed44649 | 2014-04-28 22:56:38 +0200 | [diff] [blame] | 143 | int warn = 0; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 144 | |
| 145 | retval = 0; |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 146 | |
| 147 | /* simply skip "timeout" but remain compatible with old form */ |
| 148 | if (strcmp(args[0], "timeout") == 0) |
| 149 | args++; |
| 150 | |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 151 | name = args[0]; |
Willy Tarreau | ed44649 | 2014-04-28 22:56:38 +0200 | [diff] [blame] | 152 | if (!strcmp(args[0], "client") || (!strcmp(args[0], "clitimeout") && (warn = WARN_CLITO_DEPRECATED))) { |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 153 | name = "client"; |
Willy Tarreau | d7c30f9 | 2007-12-03 01:38:36 +0100 | [diff] [blame] | 154 | tv = &proxy->timeout.client; |
| 155 | td = &defpx->timeout.client; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 156 | cap = PR_CAP_FE; |
| 157 | } else if (!strcmp(args[0], "tarpit")) { |
| 158 | tv = &proxy->timeout.tarpit; |
| 159 | td = &defpx->timeout.tarpit; |
Willy Tarreau | 51c9bde | 2008-01-06 13:40:03 +0100 | [diff] [blame] | 160 | cap = PR_CAP_FE | PR_CAP_BE; |
Willy Tarreau | b16a574 | 2010-01-10 14:46:16 +0100 | [diff] [blame] | 161 | } else if (!strcmp(args[0], "http-keep-alive")) { |
| 162 | tv = &proxy->timeout.httpka; |
| 163 | td = &defpx->timeout.httpka; |
| 164 | cap = PR_CAP_FE | PR_CAP_BE; |
Willy Tarreau | 036fae0 | 2008-01-06 13:24:40 +0100 | [diff] [blame] | 165 | } else if (!strcmp(args[0], "http-request")) { |
| 166 | tv = &proxy->timeout.httpreq; |
| 167 | td = &defpx->timeout.httpreq; |
Willy Tarreau | cd7afc0 | 2009-07-12 10:03:17 +0200 | [diff] [blame] | 168 | cap = PR_CAP_FE | PR_CAP_BE; |
Willy Tarreau | ed44649 | 2014-04-28 22:56:38 +0200 | [diff] [blame] | 169 | } else if (!strcmp(args[0], "server") || (!strcmp(args[0], "srvtimeout") && (warn = WARN_SRVTO_DEPRECATED))) { |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 170 | name = "server"; |
Willy Tarreau | d7c30f9 | 2007-12-03 01:38:36 +0100 | [diff] [blame] | 171 | tv = &proxy->timeout.server; |
| 172 | td = &defpx->timeout.server; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 173 | cap = PR_CAP_BE; |
Willy Tarreau | ed44649 | 2014-04-28 22:56:38 +0200 | [diff] [blame] | 174 | } else if (!strcmp(args[0], "connect") || (!strcmp(args[0], "contimeout") && (warn = WARN_CONTO_DEPRECATED))) { |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 175 | name = "connect"; |
Willy Tarreau | d7c30f9 | 2007-12-03 01:38:36 +0100 | [diff] [blame] | 176 | tv = &proxy->timeout.connect; |
| 177 | td = &defpx->timeout.connect; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 178 | cap = PR_CAP_BE; |
Krzysztof Piotr Oledzki | 5259dfe | 2008-01-21 01:54:06 +0100 | [diff] [blame] | 179 | } else if (!strcmp(args[0], "check")) { |
| 180 | tv = &proxy->timeout.check; |
| 181 | td = &defpx->timeout.check; |
| 182 | cap = PR_CAP_BE; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 183 | } else if (!strcmp(args[0], "queue")) { |
| 184 | tv = &proxy->timeout.queue; |
| 185 | td = &defpx->timeout.queue; |
| 186 | cap = PR_CAP_BE; |
Willy Tarreau | ce887fd | 2012-05-12 12:50:00 +0200 | [diff] [blame] | 187 | } else if (!strcmp(args[0], "tunnel")) { |
| 188 | tv = &proxy->timeout.tunnel; |
| 189 | td = &defpx->timeout.tunnel; |
| 190 | cap = PR_CAP_BE; |
Willy Tarreau | 05cdd96 | 2014-05-10 14:30:07 +0200 | [diff] [blame] | 191 | } else if (!strcmp(args[0], "client-fin")) { |
| 192 | tv = &proxy->timeout.clientfin; |
| 193 | td = &defpx->timeout.clientfin; |
| 194 | cap = PR_CAP_FE; |
| 195 | } else if (!strcmp(args[0], "server-fin")) { |
| 196 | tv = &proxy->timeout.serverfin; |
| 197 | td = &defpx->timeout.serverfin; |
| 198 | cap = PR_CAP_BE; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 199 | } else { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 200 | memprintf(err, |
| 201 | "'timeout' supports 'client', 'server', 'connect', 'check', " |
Willy Tarreau | 05cdd96 | 2014-05-10 14:30:07 +0200 | [diff] [blame] | 202 | "'queue', 'http-keep-alive', 'http-request', 'tunnel', 'tarpit', " |
| 203 | "'client-fin' and 'server-fin' (got '%s')", |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 204 | args[0]); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 205 | return -1; |
| 206 | } |
| 207 | |
| 208 | if (*args[1] == 0) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 209 | memprintf(err, "'timeout %s' expects an integer value (in milliseconds)", name); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 210 | return -1; |
| 211 | } |
| 212 | |
| 213 | res = parse_time_err(args[1], &timeout, TIME_UNIT_MS); |
| 214 | if (res) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 215 | memprintf(err, "unexpected character '%c' in 'timeout %s'", *res, name); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 216 | return -1; |
| 217 | } |
| 218 | |
| 219 | if (!(proxy->cap & cap)) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 220 | memprintf(err, "'timeout %s' will be ignored because %s '%s' has no %s capability", |
| 221 | name, proxy_type_str(proxy), proxy->id, |
| 222 | (cap & PR_CAP_BE) ? "backend" : "frontend"); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 223 | retval = 1; |
| 224 | } |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 225 | else if (defpx && *tv != *td) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 226 | memprintf(err, "overwriting 'timeout %s' which was already specified", name); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 227 | retval = 1; |
| 228 | } |
Willy Tarreau | ed44649 | 2014-04-28 22:56:38 +0200 | [diff] [blame] | 229 | else if (warn) { |
| 230 | if (!already_warned(warn)) { |
| 231 | memprintf(err, "the '%s' directive is now deprecated in favor of 'timeout %s', and will not be supported in future versions.", |
| 232 | args[0], name); |
| 233 | retval = 1; |
| 234 | } |
| 235 | } |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 236 | |
Willy Tarreau | fac5b59 | 2014-05-22 08:24:46 +0200 | [diff] [blame] | 237 | if (*args[2] != 0) { |
| 238 | memprintf(err, "'timeout %s' : unexpected extra argument '%s' after value '%s'.", name, args[2], args[1]); |
| 239 | retval = -1; |
| 240 | } |
| 241 | |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 242 | *tv = MS_TO_TICKS(timeout); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 243 | return retval; |
| 244 | } |
| 245 | |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 246 | /* This function parses a "rate-limit" statement in a proxy section. It returns |
| 247 | * -1 if there is any error, 1 for a warning, otherwise zero. If it does not |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 248 | * return zero, it will write an error or warning message into a preallocated |
| 249 | * buffer returned at <err>. The function must be called with <args> pointing |
| 250 | * to the first command line word, with <proxy> pointing to the proxy being |
| 251 | * parsed, and <defpx> to the default proxy or NULL. |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 252 | */ |
| 253 | static int proxy_parse_rate_limit(char **args, int section, struct proxy *proxy, |
Willy Tarreau | 28a47d6 | 2012-09-18 20:02:48 +0200 | [diff] [blame] | 254 | struct proxy *defpx, const char *file, int line, |
| 255 | char **err) |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 256 | { |
| 257 | int retval, cap; |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 258 | char *res; |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 259 | unsigned int *tv = NULL; |
| 260 | unsigned int *td = NULL; |
| 261 | unsigned int val; |
| 262 | |
| 263 | retval = 0; |
| 264 | |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 265 | if (strcmp(args[1], "sessions") == 0) { |
Willy Tarreau | 13a34bd | 2009-05-10 18:52:49 +0200 | [diff] [blame] | 266 | tv = &proxy->fe_sps_lim; |
| 267 | td = &defpx->fe_sps_lim; |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 268 | cap = PR_CAP_FE; |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 269 | } |
| 270 | else { |
| 271 | memprintf(err, "'%s' only supports 'sessions' (got '%s')", args[0], args[1]); |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 272 | return -1; |
| 273 | } |
| 274 | |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 275 | if (*args[2] == 0) { |
| 276 | memprintf(err, "'%s %s' expects expects an integer value (in sessions/second)", args[0], args[1]); |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 277 | return -1; |
| 278 | } |
| 279 | |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 280 | val = strtoul(args[2], &res, 0); |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 281 | if (*res) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 282 | memprintf(err, "'%s %s' : unexpected character '%c' in integer value '%s'", args[0], args[1], *res, args[2]); |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 283 | return -1; |
| 284 | } |
| 285 | |
| 286 | if (!(proxy->cap & cap)) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 287 | memprintf(err, "%s %s will be ignored because %s '%s' has no %s capability", |
| 288 | args[0], args[1], proxy_type_str(proxy), proxy->id, |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 289 | (cap & PR_CAP_BE) ? "backend" : "frontend"); |
| 290 | retval = 1; |
| 291 | } |
| 292 | else if (defpx && *tv != *td) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 293 | memprintf(err, "overwriting %s %s which was already specified", args[0], args[1]); |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 294 | retval = 1; |
| 295 | } |
| 296 | |
| 297 | *tv = val; |
| 298 | return retval; |
| 299 | } |
| 300 | |
Willy Tarreau | c35362a | 2014-04-25 13:58:37 +0200 | [diff] [blame] | 301 | /* This function parses a "max-keep-alive-queue" statement in a proxy section. |
| 302 | * It returns -1 if there is any error, 1 for a warning, otherwise zero. If it |
| 303 | * does not return zero, it will write an error or warning message into a |
| 304 | * preallocated buffer returned at <err>. The function must be called with |
| 305 | * <args> pointing to the first command line word, with <proxy> pointing to |
| 306 | * the proxy being parsed, and <defpx> to the default proxy or NULL. |
| 307 | */ |
| 308 | static int proxy_parse_max_ka_queue(char **args, int section, struct proxy *proxy, |
| 309 | struct proxy *defpx, const char *file, int line, |
| 310 | char **err) |
| 311 | { |
| 312 | int retval; |
| 313 | char *res; |
| 314 | unsigned int val; |
| 315 | |
| 316 | retval = 0; |
| 317 | |
| 318 | if (*args[1] == 0) { |
| 319 | memprintf(err, "'%s' expects expects an integer value (or -1 to disable)", args[0]); |
| 320 | return -1; |
| 321 | } |
| 322 | |
| 323 | val = strtol(args[1], &res, 0); |
| 324 | if (*res) { |
| 325 | memprintf(err, "'%s' : unexpected character '%c' in integer value '%s'", args[0], *res, args[1]); |
| 326 | return -1; |
| 327 | } |
| 328 | |
| 329 | if (!(proxy->cap & PR_CAP_BE)) { |
| 330 | memprintf(err, "%s will be ignored because %s '%s' has no backend capability", |
| 331 | args[0], proxy_type_str(proxy), proxy->id); |
| 332 | retval = 1; |
| 333 | } |
| 334 | |
| 335 | /* we store <val+1> so that a user-facing value of -1 is stored as zero (default) */ |
| 336 | proxy->max_ka_queue = val + 1; |
| 337 | return retval; |
| 338 | } |
| 339 | |
Willy Tarreau | f79d950 | 2014-03-15 07:22:35 +0100 | [diff] [blame] | 340 | /* This function inserts proxy <px> into the tree of known proxies. The proxy's |
| 341 | * name is used as the storing key so it must already have been initialized. |
| 342 | */ |
| 343 | void proxy_store_name(struct proxy *px) |
| 344 | { |
| 345 | px->conf.by_name.key = px->id; |
| 346 | ebis_insert(&proxy_by_name, &px->conf.by_name); |
| 347 | } |
| 348 | |
Willy Tarreau | 3c56a7d | 2015-05-26 15:25:32 +0200 | [diff] [blame^] | 349 | /* Returns a pointer to the first proxy matching capabilities <cap> and id |
| 350 | * <id>. NULL is returned if no match is found. If <table> is non-zero, it |
| 351 | * only considers proxies having a table. |
Willy Tarreau | bc216c4 | 2011-08-02 11:25:54 +0200 | [diff] [blame] | 352 | */ |
Willy Tarreau | 3c56a7d | 2015-05-26 15:25:32 +0200 | [diff] [blame^] | 353 | struct proxy *proxy_find_by_id(int id, int cap, int table) |
Willy Tarreau | 9e0bb10 | 2015-05-26 11:24:42 +0200 | [diff] [blame] | 354 | { |
Willy Tarreau | 3c56a7d | 2015-05-26 15:25:32 +0200 | [diff] [blame^] | 355 | struct eb32_node *n; |
Willy Tarreau | bc216c4 | 2011-08-02 11:25:54 +0200 | [diff] [blame] | 356 | |
Willy Tarreau | 3c56a7d | 2015-05-26 15:25:32 +0200 | [diff] [blame^] | 357 | for (n = eb32_lookup(&used_proxy_id, id); n; n = eb32_next(n)) { |
| 358 | struct proxy *px = container_of(n, struct proxy, conf.id); |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame] | 359 | |
Willy Tarreau | 3c56a7d | 2015-05-26 15:25:32 +0200 | [diff] [blame^] | 360 | if (px->uuid != id) |
| 361 | break; |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 362 | |
Willy Tarreau | 3c56a7d | 2015-05-26 15:25:32 +0200 | [diff] [blame^] | 363 | if ((px->cap & cap) != cap) |
| 364 | continue; |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 365 | |
Willy Tarreau | 3c56a7d | 2015-05-26 15:25:32 +0200 | [diff] [blame^] | 366 | if (table && !px->table.size) |
| 367 | continue; |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame] | 368 | |
Willy Tarreau | 3c56a7d | 2015-05-26 15:25:32 +0200 | [diff] [blame^] | 369 | return px; |
| 370 | } |
| 371 | return NULL; |
| 372 | } |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame] | 373 | |
Willy Tarreau | 3c56a7d | 2015-05-26 15:25:32 +0200 | [diff] [blame^] | 374 | /* Returns a pointer to the first proxy matching either name <name>, or id |
| 375 | * <name> if <name> begins with a '#'. NULL is returned if no match is found. |
| 376 | * If <table> is non-zero, it only considers proxies having a table. |
| 377 | */ |
| 378 | struct proxy *proxy_find_by_name(const char *name, int cap, int table) |
| 379 | { |
| 380 | struct proxy *curproxy; |
Willy Tarreau | 9e0bb10 | 2015-05-26 11:24:42 +0200 | [diff] [blame] | 381 | |
Willy Tarreau | 3c56a7d | 2015-05-26 15:25:32 +0200 | [diff] [blame^] | 382 | if (*name == '#') { |
| 383 | curproxy = proxy_find_by_id(atoi(name + 1), cap, table); |
| 384 | if (curproxy) |
Willy Tarreau | c739aa8 | 2015-05-26 11:35:41 +0200 | [diff] [blame] | 385 | return curproxy; |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 386 | } |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame] | 387 | else { |
| 388 | struct ebpt_node *node; |
| 389 | |
| 390 | for (node = ebis_lookup(&proxy_by_name, name); node; node = ebpt_next(node)) { |
| 391 | curproxy = container_of(node, struct proxy, conf.by_name); |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 392 | |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame] | 393 | if (strcmp(curproxy->id, name) != 0) |
| 394 | break; |
| 395 | |
| 396 | if ((curproxy->cap & cap) != cap) |
| 397 | continue; |
| 398 | |
Willy Tarreau | 9e0bb10 | 2015-05-26 11:24:42 +0200 | [diff] [blame] | 399 | if (table && !curproxy->table.size) |
| 400 | continue; |
| 401 | |
Willy Tarreau | c739aa8 | 2015-05-26 11:35:41 +0200 | [diff] [blame] | 402 | return curproxy; |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame] | 403 | } |
| 404 | } |
Willy Tarreau | c739aa8 | 2015-05-26 11:35:41 +0200 | [diff] [blame] | 405 | return NULL; |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 406 | } |
| 407 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 408 | /* |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 409 | * This function finds a server with matching name within selected proxy. |
| 410 | * It also checks if there are more matching servers with |
| 411 | * requested name as this often leads into unexpected situations. |
| 412 | */ |
| 413 | |
| 414 | struct server *findserver(const struct proxy *px, const char *name) { |
| 415 | |
| 416 | struct server *cursrv, *target = NULL; |
| 417 | |
| 418 | if (!px) |
| 419 | return NULL; |
| 420 | |
| 421 | for (cursrv = px->srv; cursrv; cursrv = cursrv->next) { |
| 422 | if (strcmp(cursrv->id, name)) |
| 423 | continue; |
| 424 | |
| 425 | if (!target) { |
| 426 | target = cursrv; |
| 427 | continue; |
| 428 | } |
| 429 | |
Cyril Bonté | 0bb519e | 2012-04-04 12:57:19 +0200 | [diff] [blame] | 430 | Alert("Refusing to use duplicated server '%s' found in proxy: %s!\n", |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 431 | name, px->id); |
| 432 | |
| 433 | return NULL; |
| 434 | } |
| 435 | |
| 436 | return target; |
| 437 | } |
| 438 | |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 439 | /* This function checks that the designated proxy has no http directives |
| 440 | * enabled. It will output a warning if there are, and will fix some of them. |
| 441 | * It returns the number of fatal errors encountered. This should be called |
| 442 | * at the end of the configuration parsing if the proxy is not in http mode. |
| 443 | * The <file> argument is used to construct the error message. |
| 444 | */ |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 445 | int proxy_cfg_ensure_no_http(struct proxy *curproxy) |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 446 | { |
| 447 | if (curproxy->cookie_name != NULL) { |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 448 | Warning("config : cookie will be ignored for %s '%s' (needs 'mode http').\n", |
| 449 | proxy_type_str(curproxy), curproxy->id); |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 450 | } |
| 451 | if (curproxy->rsp_exp != NULL) { |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 452 | Warning("config : server regular expressions will be ignored for %s '%s' (needs 'mode http').\n", |
| 453 | proxy_type_str(curproxy), curproxy->id); |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 454 | } |
| 455 | if (curproxy->req_exp != NULL) { |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 456 | Warning("config : client regular expressions will be ignored for %s '%s' (needs 'mode http').\n", |
| 457 | proxy_type_str(curproxy), curproxy->id); |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 458 | } |
| 459 | if (curproxy->monitor_uri != NULL) { |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 460 | Warning("config : monitor-uri will be ignored for %s '%s' (needs 'mode http').\n", |
| 461 | proxy_type_str(curproxy), curproxy->id); |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 462 | } |
Willy Tarreau | f3e49f9 | 2009-10-03 12:21:20 +0200 | [diff] [blame] | 463 | if (curproxy->lbprm.algo & BE_LB_NEED_HTTP) { |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 464 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 465 | curproxy->lbprm.algo |= BE_LB_ALGO_RR; |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 466 | Warning("config : Layer 7 hash not possible for %s '%s' (needs 'mode http'). Falling back to round robin.\n", |
| 467 | proxy_type_str(curproxy), curproxy->id); |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 468 | } |
Willy Tarreau | 1780416 | 2009-11-09 21:27:51 +0100 | [diff] [blame] | 469 | if (curproxy->to_log & (LW_REQ | LW_RESP)) { |
| 470 | curproxy->to_log &= ~(LW_REQ | LW_RESP); |
Willy Tarreau | 59ad1a2 | 2014-01-29 14:39:58 +0100 | [diff] [blame] | 471 | Warning("parsing [%s:%d] : HTTP log/header format not usable with %s '%s' (needs 'mode http').\n", |
Willy Tarreau | b1f3af2 | 2013-04-12 18:30:32 +0200 | [diff] [blame] | 472 | curproxy->conf.lfs_file, curproxy->conf.lfs_line, |
Willy Tarreau | 1780416 | 2009-11-09 21:27:51 +0100 | [diff] [blame] | 473 | proxy_type_str(curproxy), curproxy->id); |
| 474 | } |
Willy Tarreau | 62a6123 | 2013-04-12 18:13:46 +0200 | [diff] [blame] | 475 | if (curproxy->conf.logformat_string == default_http_log_format || |
| 476 | curproxy->conf.logformat_string == clf_http_log_format) { |
| 477 | /* Note: we don't change the directive's file:line number */ |
| 478 | curproxy->conf.logformat_string = default_tcp_log_format; |
| 479 | Warning("parsing [%s:%d] : 'option httplog' not usable with %s '%s' (needs 'mode http'). Falling back to 'option tcplog'.\n", |
| 480 | curproxy->conf.lfs_file, curproxy->conf.lfs_line, |
Willy Tarreau | 196729e | 2012-05-31 19:30:26 +0200 | [diff] [blame] | 481 | proxy_type_str(curproxy), curproxy->id); |
| 482 | } |
| 483 | |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 484 | return 0; |
| 485 | } |
| 486 | |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 487 | /* Perform the most basic initialization of a proxy : |
| 488 | * memset(), list_init(*), reset_timeouts(*). |
Willy Tarreau | b249e84 | 2011-09-07 18:41:08 +0200 | [diff] [blame] | 489 | * Any new proxy or peer should be initialized via this function. |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 490 | */ |
| 491 | void init_new_proxy(struct proxy *p) |
| 492 | { |
| 493 | memset(p, 0, sizeof(struct proxy)); |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 494 | p->obj_type = OBJ_TYPE_PROXY; |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 495 | LIST_INIT(&p->pendconns); |
| 496 | LIST_INIT(&p->acl); |
| 497 | LIST_INIT(&p->http_req_rules); |
Willy Tarreau | e365c0b | 2013-06-11 16:06:12 +0200 | [diff] [blame] | 498 | LIST_INIT(&p->http_res_rules); |
Willy Tarreau | 353bc9f | 2014-04-28 22:05:31 +0200 | [diff] [blame] | 499 | LIST_INIT(&p->block_rules); |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 500 | LIST_INIT(&p->redirect_rules); |
| 501 | LIST_INIT(&p->mon_fail_cond); |
| 502 | LIST_INIT(&p->switching_rules); |
Willy Tarreau | 4a5cade | 2012-04-05 21:09:48 +0200 | [diff] [blame] | 503 | LIST_INIT(&p->server_rules); |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 504 | LIST_INIT(&p->persist_rules); |
| 505 | LIST_INIT(&p->sticking_rules); |
| 506 | LIST_INIT(&p->storersp_rules); |
| 507 | LIST_INIT(&p->tcp_req.inspect_rules); |
| 508 | LIST_INIT(&p->tcp_rep.inspect_rules); |
| 509 | LIST_INIT(&p->tcp_req.l4_rules); |
| 510 | LIST_INIT(&p->req_add); |
| 511 | LIST_INIT(&p->rsp_add); |
| 512 | LIST_INIT(&p->listener_queue); |
William Lallemand | 0f99e34 | 2011-10-12 17:50:54 +0200 | [diff] [blame] | 513 | LIST_INIT(&p->logsrvs); |
William Lallemand | 723b73a | 2012-02-08 16:37:49 +0100 | [diff] [blame] | 514 | LIST_INIT(&p->logformat); |
William Lallemand | a73203e | 2012-03-12 12:48:57 +0100 | [diff] [blame] | 515 | LIST_INIT(&p->format_unique_id); |
Willy Tarreau | 2a65ff0 | 2012-09-13 17:54:29 +0200 | [diff] [blame] | 516 | LIST_INIT(&p->conf.bind); |
Willy Tarreau | 4348fad | 2012-09-20 16:48:07 +0200 | [diff] [blame] | 517 | LIST_INIT(&p->conf.listeners); |
Willy Tarreau | a4312fa | 2013-04-02 16:34:32 +0200 | [diff] [blame] | 518 | LIST_INIT(&p->conf.args.list); |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 519 | LIST_INIT(&p->tcpcheck_rules); |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 520 | |
| 521 | /* Timeouts are defined as -1 */ |
| 522 | proxy_reset_timeouts(p); |
| 523 | p->tcp_rep.inspect_delay = TICK_ETERNITY; |
Willy Tarreau | 050536d | 2012-10-04 08:47:34 +0200 | [diff] [blame] | 524 | |
| 525 | /* initial uuid is unassigned (-1) */ |
| 526 | p->uuid = -1; |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 527 | } |
| 528 | |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 529 | /* |
Willy Tarreau | 2ff7622 | 2007-04-09 19:29:56 +0200 | [diff] [blame] | 530 | * This function creates all proxy sockets. It should be done very early, |
| 531 | * typically before privileges are dropped. The sockets will be registered |
| 532 | * but not added to any fd_set, in order not to loose them across the fork(). |
Willy Tarreau | 562515c | 2011-07-25 08:11:52 +0200 | [diff] [blame] | 533 | * The proxies also start in READY state because they all have their listeners |
Willy Tarreau | f3f8c70 | 2011-07-25 07:37:28 +0200 | [diff] [blame] | 534 | * bound. |
Willy Tarreau | 2ff7622 | 2007-04-09 19:29:56 +0200 | [diff] [blame] | 535 | * |
| 536 | * Its return value is composed from ERR_NONE, ERR_RETRYABLE and ERR_FATAL. |
| 537 | * Retryable errors will only be printed if <verbose> is not zero. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 538 | */ |
| 539 | int start_proxies(int verbose) |
| 540 | { |
| 541 | struct proxy *curproxy; |
| 542 | struct listener *listener; |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 543 | int lerr, err = ERR_NONE; |
| 544 | int pxerr; |
| 545 | char msg[100]; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 546 | |
| 547 | for (curproxy = proxy; curproxy != NULL; curproxy = curproxy->next) { |
| 548 | if (curproxy->state != PR_STNEW) |
| 549 | continue; /* already initialized */ |
| 550 | |
| 551 | pxerr = 0; |
Willy Tarreau | 4348fad | 2012-09-20 16:48:07 +0200 | [diff] [blame] | 552 | list_for_each_entry(listener, &curproxy->conf.listeners, by_fe) { |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 553 | if (listener->state != LI_ASSIGNED) |
| 554 | continue; /* already started */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 555 | |
Emeric Brun | cf20bf1 | 2010-10-22 16:06:11 +0200 | [diff] [blame] | 556 | lerr = listener->proto->bind(listener, msg, sizeof(msg)); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 557 | |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 558 | /* errors are reported if <verbose> is set or if they are fatal */ |
| 559 | if (verbose || (lerr & (ERR_FATAL | ERR_ABORT))) { |
| 560 | if (lerr & ERR_ALERT) |
| 561 | Alert("Starting %s %s: %s\n", |
| 562 | proxy_type_str(curproxy), curproxy->id, msg); |
| 563 | else if (lerr & ERR_WARN) |
| 564 | Warning("Starting %s %s: %s\n", |
| 565 | proxy_type_str(curproxy), curproxy->id, msg); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 566 | } |
| 567 | |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 568 | err |= lerr; |
| 569 | if (lerr & (ERR_ABORT | ERR_FATAL)) { |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 570 | pxerr |= 1; |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 571 | break; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 572 | } |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 573 | else if (lerr & ERR_CODE) { |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 574 | pxerr |= 1; |
| 575 | continue; |
| 576 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 577 | } |
| 578 | |
| 579 | if (!pxerr) { |
Willy Tarreau | 562515c | 2011-07-25 08:11:52 +0200 | [diff] [blame] | 580 | curproxy->state = PR_STREADY; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 581 | send_log(curproxy, LOG_NOTICE, "Proxy %s started.\n", curproxy->id); |
| 582 | } |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 583 | |
| 584 | if (err & ERR_ABORT) |
| 585 | break; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 586 | } |
| 587 | |
| 588 | return err; |
| 589 | } |
| 590 | |
| 591 | |
| 592 | /* |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 593 | * This is the proxy management task. It enables proxies when there are enough |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 594 | * free streams, or stops them when the table is full. It is designed to be |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 595 | * called as a task which is woken up upon stopping or when rate limiting must |
| 596 | * be enforced. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 597 | */ |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 598 | struct task *manage_proxy(struct task *t) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 599 | { |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 600 | struct proxy *p = t->context; |
| 601 | int next = TICK_ETERNITY; |
Willy Tarreau | 7958422 | 2009-03-06 09:18:27 +0100 | [diff] [blame] | 602 | unsigned int wait; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 603 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 604 | /* We should periodically try to enable listeners waiting for a |
| 605 | * global resource here. |
| 606 | */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 607 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 608 | /* first, let's check if we need to stop the proxy */ |
| 609 | if (unlikely(stopping && p->state != PR_STSTOPPED)) { |
| 610 | int t; |
| 611 | t = tick_remain(now_ms, p->stop_time); |
| 612 | if (t == 0) { |
| 613 | Warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n", |
| 614 | p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn); |
| 615 | send_log(p, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n", |
| 616 | p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn); |
| 617 | stop_proxy(p); |
| 618 | /* try to free more memory */ |
| 619 | pool_gc2(); |
| 620 | } |
| 621 | else { |
| 622 | next = tick_first(next, p->stop_time); |
| 623 | } |
| 624 | } |
Willy Tarreau | f3f8c70 | 2011-07-25 07:37:28 +0200 | [diff] [blame] | 625 | |
Willy Tarreau | 3a925c1 | 2013-09-04 17:54:01 +0200 | [diff] [blame] | 626 | /* If the proxy holds a stick table, we need to purge all unused |
| 627 | * entries. These are all the ones in the table with ref_cnt == 0 |
| 628 | * and all the ones in the pool used to allocate new entries. Any |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 629 | * entry attached to an existing stream waiting for a store will |
Willy Tarreau | 3a925c1 | 2013-09-04 17:54:01 +0200 | [diff] [blame] | 630 | * be in neither list. Any entry being dumped will have ref_cnt > 0. |
| 631 | * However we protect tables that are being synced to peers. |
| 632 | */ |
| 633 | if (unlikely(stopping && p->state == PR_STSTOPPED && p->table.current)) { |
| 634 | if (!p->table.syncing) { |
| 635 | stktable_trash_oldest(&p->table, p->table.current); |
| 636 | pool_gc2(); |
| 637 | } |
| 638 | if (p->table.current) { |
| 639 | /* some entries still remain, let's recheck in one second */ |
| 640 | next = tick_first(next, tick_add(now_ms, 1000)); |
| 641 | } |
| 642 | } |
| 643 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 644 | /* the rest below is just for frontends */ |
| 645 | if (!(p->cap & PR_CAP_FE)) |
| 646 | goto out; |
Willy Tarreau | f3f8c70 | 2011-07-25 07:37:28 +0200 | [diff] [blame] | 647 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 648 | /* check the various reasons we may find to block the frontend */ |
| 649 | if (unlikely(p->feconn >= p->maxconn)) { |
| 650 | if (p->state == PR_STREADY) |
| 651 | p->state = PR_STFULL; |
| 652 | goto out; |
| 653 | } |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 654 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 655 | /* OK we have no reason to block, so let's unblock if we were blocking */ |
| 656 | if (p->state == PR_STFULL) |
| 657 | p->state = PR_STREADY; |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 658 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 659 | if (p->fe_sps_lim && |
| 660 | (wait = next_event_delay(&p->fe_sess_per_sec, p->fe_sps_lim, 0))) { |
| 661 | /* we're blocking because a limit was reached on the number of |
| 662 | * requests/s on the frontend. We want to re-check ASAP, which |
| 663 | * means in 1 ms before estimated expiration date, because the |
| 664 | * timer will have settled down. |
| 665 | */ |
| 666 | next = tick_first(next, tick_add(now_ms, wait)); |
| 667 | goto out; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 668 | } |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 669 | |
| 670 | /* The proxy is not limited so we can re-enable any waiting listener */ |
| 671 | if (!LIST_ISEMPTY(&p->listener_queue)) |
| 672 | dequeue_all_listeners(&p->listener_queue); |
| 673 | out: |
| 674 | t->expire = next; |
| 675 | task_queue(t); |
| 676 | return t; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 677 | } |
| 678 | |
| 679 | |
| 680 | /* |
| 681 | * this function disables health-check servers so that the process will quickly be ignored |
| 682 | * by load balancers. Note that if a proxy was already in the PAUSED state, then its grace |
| 683 | * time will not be used since it would already not listen anymore to the socket. |
| 684 | */ |
| 685 | void soft_stop(void) |
| 686 | { |
| 687 | struct proxy *p; |
Willy Tarreau | bbe11b1 | 2011-07-25 11:16:24 +0200 | [diff] [blame] | 688 | struct peers *prs; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 689 | |
| 690 | stopping = 1; |
| 691 | p = proxy; |
Willy Tarreau | b0b37bc | 2008-06-23 14:00:57 +0200 | [diff] [blame] | 692 | tv_update_date(0,1); /* else, the old time before select will be used */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 693 | while (p) { |
| 694 | if (p->state != PR_STSTOPPED) { |
Willy Tarreau | f8fbcef | 2008-10-10 17:51:34 +0200 | [diff] [blame] | 695 | Warning("Stopping %s %s in %d ms.\n", proxy_cap_str(p->cap), p->id, p->grace); |
| 696 | send_log(p, LOG_WARNING, "Stopping %s %s in %d ms.\n", proxy_cap_str(p->cap), p->id, p->grace); |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 697 | p->stop_time = tick_add(now_ms, p->grace); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 698 | } |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 699 | if (p->table.size && p->table.sync_task) |
| 700 | task_wakeup(p->table.sync_task, TASK_WOKEN_MSG); |
| 701 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 702 | /* wake every proxy task up so that they can handle the stopping */ |
Willy Tarreau | d1a33e3 | 2012-10-04 00:14:33 +0200 | [diff] [blame] | 703 | if (p->task) |
| 704 | task_wakeup(p->task, TASK_WOKEN_MSG); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 705 | p = p->next; |
| 706 | } |
Willy Tarreau | bbe11b1 | 2011-07-25 11:16:24 +0200 | [diff] [blame] | 707 | |
| 708 | prs = peers; |
| 709 | while (prs) { |
| 710 | stop_proxy((struct proxy *)prs->peers_fe); |
| 711 | prs = prs->next; |
| 712 | } |
Willy Tarreau | d0807c3 | 2010-08-27 18:26:11 +0200 | [diff] [blame] | 713 | /* signal zero is used to broadcast the "stopping" event */ |
| 714 | signal_handler(0); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 715 | } |
| 716 | |
| 717 | |
Willy Tarreau | be58c38 | 2011-07-24 18:28:10 +0200 | [diff] [blame] | 718 | /* Temporarily disables listening on all of the proxy's listeners. Upon |
| 719 | * success, the proxy enters the PR_PAUSED state. If disabling at least one |
| 720 | * listener returns an error, then the proxy state is set to PR_STERROR |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 721 | * because we don't know how to resume from this. The function returns 0 |
| 722 | * if it fails, or non-zero on success. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 723 | */ |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 724 | int pause_proxy(struct proxy *p) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 725 | { |
| 726 | struct listener *l; |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 727 | |
| 728 | if (!(p->cap & PR_CAP_FE) || p->state == PR_STERROR || |
| 729 | p->state == PR_STSTOPPED || p->state == PR_STPAUSED) |
| 730 | return 1; |
| 731 | |
| 732 | Warning("Pausing %s %s.\n", proxy_cap_str(p->cap), p->id); |
| 733 | send_log(p, LOG_WARNING, "Pausing %s %s.\n", proxy_cap_str(p->cap), p->id); |
| 734 | |
Willy Tarreau | 4348fad | 2012-09-20 16:48:07 +0200 | [diff] [blame] | 735 | list_for_each_entry(l, &p->conf.listeners, by_fe) { |
Willy Tarreau | be58c38 | 2011-07-24 18:28:10 +0200 | [diff] [blame] | 736 | if (!pause_listener(l)) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 737 | p->state = PR_STERROR; |
| 738 | } |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 739 | |
| 740 | if (p->state == PR_STERROR) { |
| 741 | Warning("%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id); |
| 742 | send_log(p, LOG_WARNING, "%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id); |
| 743 | return 0; |
| 744 | } |
| 745 | |
| 746 | p->state = PR_STPAUSED; |
| 747 | return 1; |
Willy Tarreau | da250db | 2008-10-12 12:07:48 +0200 | [diff] [blame] | 748 | } |
| 749 | |
| 750 | |
| 751 | /* |
| 752 | * This function completely stops a proxy and releases its listeners. It has |
| 753 | * to be called when going down in order to release the ports so that another |
| 754 | * process may bind to them. It must also be called on disabled proxies at the |
| 755 | * end of start-up. When all listeners are closed, the proxy is set to the |
| 756 | * PR_STSTOPPED state. |
| 757 | */ |
| 758 | void stop_proxy(struct proxy *p) |
| 759 | { |
| 760 | struct listener *l; |
| 761 | |
Willy Tarreau | 4348fad | 2012-09-20 16:48:07 +0200 | [diff] [blame] | 762 | list_for_each_entry(l, &p->conf.listeners, by_fe) { |
Willy Tarreau | da250db | 2008-10-12 12:07:48 +0200 | [diff] [blame] | 763 | unbind_listener(l); |
| 764 | if (l->state >= LI_ASSIGNED) { |
| 765 | delete_listener(l); |
| 766 | listeners--; |
Willy Tarreau | af7ad00 | 2010-08-31 15:39:26 +0200 | [diff] [blame] | 767 | jobs--; |
Willy Tarreau | da250db | 2008-10-12 12:07:48 +0200 | [diff] [blame] | 768 | } |
| 769 | } |
| 770 | p->state = PR_STSTOPPED; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 771 | } |
| 772 | |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 773 | /* This function resumes listening on the specified proxy. It scans all of its |
| 774 | * listeners and tries to enable them all. If any of them fails, the proxy is |
| 775 | * put back to the paused state. It returns 1 upon success, or zero if an error |
| 776 | * is encountered. |
| 777 | */ |
| 778 | int resume_proxy(struct proxy *p) |
| 779 | { |
| 780 | struct listener *l; |
| 781 | int fail; |
| 782 | |
| 783 | if (p->state != PR_STPAUSED) |
| 784 | return 1; |
| 785 | |
| 786 | Warning("Enabling %s %s.\n", proxy_cap_str(p->cap), p->id); |
| 787 | send_log(p, LOG_WARNING, "Enabling %s %s.\n", proxy_cap_str(p->cap), p->id); |
| 788 | |
| 789 | fail = 0; |
Willy Tarreau | 4348fad | 2012-09-20 16:48:07 +0200 | [diff] [blame] | 790 | list_for_each_entry(l, &p->conf.listeners, by_fe) { |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 791 | if (!resume_listener(l)) { |
| 792 | int port; |
| 793 | |
| 794 | port = get_host_port(&l->addr); |
| 795 | if (port) { |
| 796 | Warning("Port %d busy while trying to enable %s %s.\n", |
| 797 | port, proxy_cap_str(p->cap), p->id); |
| 798 | send_log(p, LOG_WARNING, "Port %d busy while trying to enable %s %s.\n", |
| 799 | port, proxy_cap_str(p->cap), p->id); |
| 800 | } |
| 801 | else { |
| 802 | Warning("Bind on socket %d busy while trying to enable %s %s.\n", |
| 803 | l->luid, proxy_cap_str(p->cap), p->id); |
| 804 | send_log(p, LOG_WARNING, "Bind on socket %d busy while trying to enable %s %s.\n", |
| 805 | l->luid, proxy_cap_str(p->cap), p->id); |
| 806 | } |
| 807 | |
| 808 | /* Another port might have been enabled. Let's stop everything. */ |
| 809 | fail = 1; |
| 810 | break; |
| 811 | } |
| 812 | } |
| 813 | |
| 814 | p->state = PR_STREADY; |
| 815 | if (fail) { |
| 816 | pause_proxy(p); |
| 817 | return 0; |
| 818 | } |
| 819 | return 1; |
| 820 | } |
| 821 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 822 | /* |
| 823 | * This function temporarily disables listening so that another new instance |
| 824 | * can start listening. It is designed to be called upon reception of a |
| 825 | * SIGTTOU, after which either a SIGUSR1 can be sent to completely stop |
| 826 | * the proxy, or a SIGTTIN can be sent to listen again. |
| 827 | */ |
| 828 | void pause_proxies(void) |
| 829 | { |
| 830 | int err; |
| 831 | struct proxy *p; |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 832 | struct peers *prs; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 833 | |
| 834 | err = 0; |
| 835 | p = proxy; |
Willy Tarreau | b0b37bc | 2008-06-23 14:00:57 +0200 | [diff] [blame] | 836 | tv_update_date(0,1); /* else, the old time before select will be used */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 837 | while (p) { |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 838 | err |= !pause_proxy(p); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 839 | p = p->next; |
| 840 | } |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 841 | |
| 842 | prs = peers; |
| 843 | while (prs) { |
| 844 | p = prs->peers_fe; |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 845 | err |= !pause_proxy(p); |
| 846 | prs = prs->next; |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 847 | } |
| 848 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 849 | if (err) { |
| 850 | Warning("Some proxies refused to pause, performing soft stop now.\n"); |
| 851 | send_log(p, LOG_WARNING, "Some proxies refused to pause, performing soft stop now.\n"); |
| 852 | soft_stop(); |
| 853 | } |
| 854 | } |
| 855 | |
| 856 | |
| 857 | /* |
| 858 | * This function reactivates listening. This can be used after a call to |
| 859 | * sig_pause(), for example when a new instance has failed starting up. |
| 860 | * It is designed to be called upon reception of a SIGTTIN. |
| 861 | */ |
Willy Tarreau | be58c38 | 2011-07-24 18:28:10 +0200 | [diff] [blame] | 862 | void resume_proxies(void) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 863 | { |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 864 | int err; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 865 | struct proxy *p; |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 866 | struct peers *prs; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 867 | |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 868 | err = 0; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 869 | p = proxy; |
Willy Tarreau | b0b37bc | 2008-06-23 14:00:57 +0200 | [diff] [blame] | 870 | tv_update_date(0,1); /* else, the old time before select will be used */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 871 | while (p) { |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 872 | err |= !resume_proxy(p); |
| 873 | p = p->next; |
| 874 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 875 | |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 876 | prs = peers; |
| 877 | while (prs) { |
| 878 | p = prs->peers_fe; |
| 879 | err |= !resume_proxy(p); |
| 880 | prs = prs->next; |
| 881 | } |
Willy Tarreau | be58c38 | 2011-07-24 18:28:10 +0200 | [diff] [blame] | 882 | |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 883 | if (err) { |
| 884 | Warning("Some proxies refused to resume, a restart is probably needed to resume safe operations.\n"); |
| 885 | send_log(p, LOG_WARNING, "Some proxies refused to resume, a restart is probably needed to resume safe operations.\n"); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 886 | } |
| 887 | } |
| 888 | |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 889 | /* Set current stream's backend to <be>. Nothing is done if the |
| 890 | * stream already had a backend assigned, which is indicated by |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 891 | * s->flags & SF_BE_ASSIGNED. |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 892 | * All flags, stats and counters which need be updated are updated. |
Willy Tarreau | bedb9ba | 2009-07-12 08:27:39 +0200 | [diff] [blame] | 893 | * Returns 1 if done, 0 in case of internal error, eg: lack of resource. |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 894 | */ |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 895 | int stream_set_backend(struct stream *s, struct proxy *be) |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 896 | { |
Willy Tarreau | e7dff02 | 2015-04-03 01:14:29 +0200 | [diff] [blame] | 897 | if (s->flags & SF_BE_ASSIGNED) |
Willy Tarreau | bedb9ba | 2009-07-12 08:27:39 +0200 | [diff] [blame] | 898 | return 1; |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 899 | s->be = be; |
| 900 | be->beconn++; |
Willy Tarreau | 7d0aaf3 | 2011-03-10 23:25:56 +0100 | [diff] [blame] | 901 | if (be->beconn > be->be_counters.conn_max) |
| 902 | be->be_counters.conn_max = be->beconn; |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 903 | proxy_inc_be_ctr(be); |
| 904 | |
Willy Tarreau | 87b0966 | 2015-04-03 00:22:06 +0200 | [diff] [blame] | 905 | /* assign new parameters to the stream from the new backend */ |
Willy Tarreau | f27b5ea | 2009-10-03 22:01:18 +0200 | [diff] [blame] | 906 | s->si[1].flags &= ~SI_FL_INDEP_STR; |
| 907 | if (be->options2 & PR_O2_INDEPSTR) |
| 908 | s->si[1].flags |= SI_FL_INDEP_STR; |
| 909 | |
Willy Tarreau | 9fbe18e | 2015-05-01 22:42:08 +0200 | [diff] [blame] | 910 | /* We want to enable the backend-specific analysers except those which |
| 911 | * were already run as part of the frontend/listener. Note that it would |
| 912 | * be more reliable to store the list of analysers that have been run, |
| 913 | * but what we do here is OK for now. |
| 914 | */ |
| 915 | s->req.analysers |= be->be_req_ana & ~strm_li(s)->analysers; |
| 916 | |
Willy Tarreau | 51aecc7 | 2009-07-12 09:47:04 +0200 | [diff] [blame] | 917 | /* If the target backend requires HTTP processing, we have to allocate |
Willy Tarreau | eee5b51 | 2015-04-03 23:46:31 +0200 | [diff] [blame] | 918 | * the HTTP transaction and hdr_idx if we did not have one. |
Willy Tarreau | 51aecc7 | 2009-07-12 09:47:04 +0200 | [diff] [blame] | 919 | */ |
Willy Tarreau | eee5b51 | 2015-04-03 23:46:31 +0200 | [diff] [blame] | 920 | if (unlikely(!s->txn && be->http_needed)) { |
| 921 | if (unlikely(!http_alloc_txn(s))) |
Willy Tarreau | 51aecc7 | 2009-07-12 09:47:04 +0200 | [diff] [blame] | 922 | return 0; /* not enough memory */ |
Willy Tarreau | 39e4f62 | 2010-05-31 17:01:36 +0200 | [diff] [blame] | 923 | |
| 924 | /* and now initialize the HTTP transaction state */ |
| 925 | http_init_txn(s); |
Willy Tarreau | 51aecc7 | 2009-07-12 09:47:04 +0200 | [diff] [blame] | 926 | } |
| 927 | |
Willy Tarreau | eee5b51 | 2015-04-03 23:46:31 +0200 | [diff] [blame] | 928 | if (s->txn) { |
| 929 | if (be->options2 & PR_O2_RSPBUG_OK) |
| 930 | s->txn->rsp.err_pos = -1; /* let buggy responses pass */ |
Willy Tarreau | 4e21ff9 | 2014-09-30 18:44:22 +0200 | [diff] [blame] | 931 | |
Willy Tarreau | eee5b51 | 2015-04-03 23:46:31 +0200 | [diff] [blame] | 932 | /* If we chain to an HTTP backend running a different HTTP mode, we |
| 933 | * have to re-adjust the desired keep-alive/close mode to accommodate |
| 934 | * both the frontend's and the backend's modes. |
| 935 | */ |
Willy Tarreau | d0d8da9 | 2015-04-04 02:10:38 +0200 | [diff] [blame] | 936 | if (strm_fe(s)->mode == PR_MODE_HTTP && be->mode == PR_MODE_HTTP && |
| 937 | ((strm_fe(s)->options & PR_O_HTTP_MODE) != (be->options & PR_O_HTTP_MODE))) |
Willy Tarreau | eee5b51 | 2015-04-03 23:46:31 +0200 | [diff] [blame] | 938 | http_adjust_conn_mode(s, s->txn, &s->txn->req); |
Willy Tarreau | 80a92c0 | 2014-03-12 10:41:13 +0100 | [diff] [blame] | 939 | |
Willy Tarreau | eee5b51 | 2015-04-03 23:46:31 +0200 | [diff] [blame] | 940 | /* If an LB algorithm needs to access some pre-parsed body contents, |
| 941 | * we must not start to forward anything until the connection is |
| 942 | * confirmed otherwise we'll lose the pointer to these data and |
| 943 | * prevent the hash from being doable again after a redispatch. |
| 944 | */ |
| 945 | if (be->mode == PR_MODE_HTTP && |
| 946 | (be->lbprm.algo & (BE_LB_KIND | BE_LB_PARM)) == (BE_LB_KIND_HI | BE_LB_HASH_PRM)) |
| 947 | s->txn->req.flags |= HTTP_MSGF_WAIT_CONN; |
Willy Tarreau | 9fbe18e | 2015-05-01 22:42:08 +0200 | [diff] [blame] | 948 | |
| 949 | /* we may request to parse a request body */ |
| 950 | if ((be->options & PR_O_WREQ_BODY) && |
| 951 | (s->txn->req.body_len || (s->txn->req.flags & HTTP_MSGF_TE_CHNK))) |
| 952 | s->req.analysers |= AN_REQ_HTTP_BODY; |
Willy Tarreau | eee5b51 | 2015-04-03 23:46:31 +0200 | [diff] [blame] | 953 | } |
| 954 | |
| 955 | s->flags |= SF_BE_ASSIGNED; |
Willy Tarreau | 96e3121 | 2011-05-30 18:10:30 +0200 | [diff] [blame] | 956 | if (be->options2 & PR_O2_NODELAY) { |
Willy Tarreau | 22ec1ea | 2014-11-27 20:45:39 +0100 | [diff] [blame] | 957 | s->req.flags |= CF_NEVER_WAIT; |
| 958 | s->res.flags |= CF_NEVER_WAIT; |
Willy Tarreau | 96e3121 | 2011-05-30 18:10:30 +0200 | [diff] [blame] | 959 | } |
| 960 | |
Willy Tarreau | bedb9ba | 2009-07-12 08:27:39 +0200 | [diff] [blame] | 961 | return 1; |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 962 | } |
| 963 | |
Willy Tarreau | dc13c11 | 2013-06-21 23:16:39 +0200 | [diff] [blame] | 964 | static struct cfg_kw_list cfg_kws = {ILH, { |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 965 | { CFG_LISTEN, "timeout", proxy_parse_timeout }, |
| 966 | { CFG_LISTEN, "clitimeout", proxy_parse_timeout }, |
| 967 | { CFG_LISTEN, "contimeout", proxy_parse_timeout }, |
| 968 | { CFG_LISTEN, "srvtimeout", proxy_parse_timeout }, |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 969 | { CFG_LISTEN, "rate-limit", proxy_parse_rate_limit }, |
Willy Tarreau | c35362a | 2014-04-25 13:58:37 +0200 | [diff] [blame] | 970 | { CFG_LISTEN, "max-keep-alive-queue", proxy_parse_max_ka_queue }, |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 971 | { 0, NULL, NULL }, |
| 972 | }}; |
| 973 | |
| 974 | __attribute__((constructor)) |
| 975 | static void __proxy_module_init(void) |
| 976 | { |
| 977 | cfg_register_keywords(&cfg_kws); |
| 978 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 979 | |
| 980 | /* |
| 981 | * Local variables: |
| 982 | * c-indent-level: 8 |
| 983 | * c-basic-offset: 8 |
| 984 | * End: |
| 985 | */ |