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> |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 44 | #include <proto/task.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 45 | |
| 46 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 47 | int listeners; /* # of proxy listeners, set by cfgparse */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 48 | struct proxy *proxy = NULL; /* list of all existing proxies */ |
Willy Tarreau | 53fb4ae | 2009-10-04 23:04:08 +0200 | [diff] [blame] | 49 | 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] | 50 | 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] | 51 | 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] | 52 | |
Willy Tarreau | 977b8e4 | 2006-12-29 14:19:17 +0100 | [diff] [blame] | 53 | /* |
Willy Tarreau | 816eb54 | 2007-11-04 07:04:43 +0100 | [diff] [blame] | 54 | * This function returns a string containing a name describing capabilities to |
| 55 | * report comprehensible error messages. Specifically, it will return the words |
| 56 | * "frontend", "backend", "ruleset" when appropriate, or "proxy" for all other |
| 57 | * cases including the proxies declared in "listen" mode. |
Willy Tarreau | 977b8e4 | 2006-12-29 14:19:17 +0100 | [diff] [blame] | 58 | */ |
Willy Tarreau | 816eb54 | 2007-11-04 07:04:43 +0100 | [diff] [blame] | 59 | const char *proxy_cap_str(int cap) |
Willy Tarreau | 977b8e4 | 2006-12-29 14:19:17 +0100 | [diff] [blame] | 60 | { |
Willy Tarreau | 816eb54 | 2007-11-04 07:04:43 +0100 | [diff] [blame] | 61 | if ((cap & PR_CAP_LISTEN) != PR_CAP_LISTEN) { |
| 62 | if (cap & PR_CAP_FE) |
| 63 | return "frontend"; |
| 64 | else if (cap & PR_CAP_BE) |
| 65 | return "backend"; |
| 66 | else if (cap & PR_CAP_RS) |
| 67 | return "ruleset"; |
| 68 | } |
| 69 | return "proxy"; |
Willy Tarreau | 977b8e4 | 2006-12-29 14:19:17 +0100 | [diff] [blame] | 70 | } |
| 71 | |
Krzysztof Piotr Oledzki | 6eb730d | 2007-11-03 23:41:58 +0100 | [diff] [blame] | 72 | /* |
| 73 | * This function returns a string containing the mode of the proxy in a format |
| 74 | * suitable for error messages. |
| 75 | */ |
Krzysztof Piotr Oledzki | 6eb730d | 2007-11-03 23:41:58 +0100 | [diff] [blame] | 76 | const char *proxy_mode_str(int mode) { |
| 77 | |
| 78 | if (mode == PR_MODE_TCP) |
| 79 | return "tcp"; |
| 80 | else if (mode == PR_MODE_HTTP) |
| 81 | return "http"; |
| 82 | else if (mode == PR_MODE_HEALTH) |
| 83 | return "health"; |
| 84 | else |
| 85 | return "unknown"; |
| 86 | } |
| 87 | |
vd000001 | f7b633e | 2021-09-06 21:36:04 +0800 | [diff] [blame^] | 88 | int test_backend_server(const char *bk_name, char *uri, |
| 89 | struct proxy **bk, struct server **sv) |
| 90 | { |
| 91 | struct proxy *p; |
| 92 | struct server *s; |
| 93 | int uri_len = strlen(uri); |
| 94 | *sv = NULL; |
| 95 | p = findproxy(bk_name, PR_CAP_BE); |
| 96 | if (bk) |
| 97 | *bk = p; |
| 98 | if (!p) |
| 99 | return 0; |
| 100 | fprintf(stderr, "%s\n", uri); |
| 101 | s = get_server_uh(p, uri, uri_len); |
| 102 | *sv = s; |
| 103 | if (!s) |
| 104 | return 0; |
| 105 | return 1; |
| 106 | } |
Willy Tarreau | f395017 | 2009-10-10 18:35:51 +0200 | [diff] [blame] | 107 | /* |
| 108 | * This function scans the list of backends and servers to retrieve the first |
| 109 | * backend and the first server with the given names, and sets them in both |
| 110 | * parameters. It returns zero if either is not found, or non-zero and sets |
| 111 | * the ones it did not found to NULL. If a NULL pointer is passed for the |
| 112 | * backend, only the pointer to the server will be updated. |
| 113 | */ |
| 114 | int get_backend_server(const char *bk_name, const char *sv_name, |
| 115 | struct proxy **bk, struct server **sv) |
| 116 | { |
| 117 | struct proxy *p; |
| 118 | struct server *s; |
Willy Tarreau | 7ecc420 | 2014-03-15 07:57:11 +0100 | [diff] [blame] | 119 | int sid; |
Willy Tarreau | f395017 | 2009-10-10 18:35:51 +0200 | [diff] [blame] | 120 | |
| 121 | *sv = NULL; |
| 122 | |
Willy Tarreau | 050536d | 2012-10-04 08:47:34 +0200 | [diff] [blame] | 123 | sid = -1; |
Willy Tarreau | cfeaa47 | 2009-10-10 22:33:08 +0200 | [diff] [blame] | 124 | if (*sv_name == '#') |
| 125 | sid = atoi(sv_name + 1); |
| 126 | |
Willy Tarreau | 7ecc420 | 2014-03-15 07:57:11 +0100 | [diff] [blame] | 127 | p = findproxy(bk_name, PR_CAP_BE); |
Willy Tarreau | f395017 | 2009-10-10 18:35:51 +0200 | [diff] [blame] | 128 | if (bk) |
| 129 | *bk = p; |
| 130 | if (!p) |
| 131 | return 0; |
| 132 | |
| 133 | for (s = p->srv; s; s = s->next) |
Willy Tarreau | 4055a10 | 2012-11-15 00:15:18 +0100 | [diff] [blame] | 134 | if ((sid >= 0 && s->puid == sid) || |
| 135 | (sid < 0 && strcmp(s->id, sv_name) == 0)) |
Willy Tarreau | f395017 | 2009-10-10 18:35:51 +0200 | [diff] [blame] | 136 | break; |
| 137 | *sv = s; |
| 138 | if (!s) |
| 139 | return 0; |
| 140 | return 1; |
| 141 | } |
| 142 | |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 143 | /* This function parses a "timeout" statement in a proxy section. It returns |
| 144 | * -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] | 145 | * return zero, it will write an error or warning message into a preallocated |
| 146 | * buffer returned at <err>. The trailing is not be written. The function must |
| 147 | * be called with <args> pointing to the first command line word, with <proxy> |
| 148 | * pointing to the proxy being parsed, and <defpx> to the default proxy or NULL. |
| 149 | * As a special case for compatibility with older configs, it also accepts |
| 150 | * "{cli|srv|con}timeout" in args[0]. |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 151 | */ |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 152 | static int proxy_parse_timeout(char **args, int section, struct proxy *proxy, |
Willy Tarreau | 28a47d6 | 2012-09-18 20:02:48 +0200 | [diff] [blame] | 153 | struct proxy *defpx, const char *file, int line, |
| 154 | char **err) |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 155 | { |
| 156 | unsigned timeout; |
| 157 | int retval, cap; |
| 158 | const char *res, *name; |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 159 | int *tv = NULL; |
| 160 | int *td = NULL; |
Willy Tarreau | ed44649 | 2014-04-28 22:56:38 +0200 | [diff] [blame] | 161 | int warn = 0; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 162 | |
| 163 | retval = 0; |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 164 | |
| 165 | /* simply skip "timeout" but remain compatible with old form */ |
| 166 | if (strcmp(args[0], "timeout") == 0) |
| 167 | args++; |
| 168 | |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 169 | name = args[0]; |
Willy Tarreau | ed44649 | 2014-04-28 22:56:38 +0200 | [diff] [blame] | 170 | 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] | 171 | name = "client"; |
Willy Tarreau | d7c30f9 | 2007-12-03 01:38:36 +0100 | [diff] [blame] | 172 | tv = &proxy->timeout.client; |
| 173 | td = &defpx->timeout.client; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 174 | cap = PR_CAP_FE; |
| 175 | } else if (!strcmp(args[0], "tarpit")) { |
| 176 | tv = &proxy->timeout.tarpit; |
| 177 | td = &defpx->timeout.tarpit; |
Willy Tarreau | 51c9bde | 2008-01-06 13:40:03 +0100 | [diff] [blame] | 178 | cap = PR_CAP_FE | PR_CAP_BE; |
Willy Tarreau | b16a574 | 2010-01-10 14:46:16 +0100 | [diff] [blame] | 179 | } else if (!strcmp(args[0], "http-keep-alive")) { |
| 180 | tv = &proxy->timeout.httpka; |
| 181 | td = &defpx->timeout.httpka; |
| 182 | cap = PR_CAP_FE | PR_CAP_BE; |
Willy Tarreau | 036fae0 | 2008-01-06 13:24:40 +0100 | [diff] [blame] | 183 | } else if (!strcmp(args[0], "http-request")) { |
| 184 | tv = &proxy->timeout.httpreq; |
| 185 | td = &defpx->timeout.httpreq; |
Willy Tarreau | cd7afc0 | 2009-07-12 10:03:17 +0200 | [diff] [blame] | 186 | cap = PR_CAP_FE | PR_CAP_BE; |
Willy Tarreau | ed44649 | 2014-04-28 22:56:38 +0200 | [diff] [blame] | 187 | } 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] | 188 | name = "server"; |
Willy Tarreau | d7c30f9 | 2007-12-03 01:38:36 +0100 | [diff] [blame] | 189 | tv = &proxy->timeout.server; |
| 190 | td = &defpx->timeout.server; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 191 | cap = PR_CAP_BE; |
Willy Tarreau | ed44649 | 2014-04-28 22:56:38 +0200 | [diff] [blame] | 192 | } 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] | 193 | name = "connect"; |
Willy Tarreau | d7c30f9 | 2007-12-03 01:38:36 +0100 | [diff] [blame] | 194 | tv = &proxy->timeout.connect; |
| 195 | td = &defpx->timeout.connect; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 196 | cap = PR_CAP_BE; |
Krzysztof Piotr Oledzki | 5259dfe | 2008-01-21 01:54:06 +0100 | [diff] [blame] | 197 | } else if (!strcmp(args[0], "check")) { |
| 198 | tv = &proxy->timeout.check; |
| 199 | td = &defpx->timeout.check; |
| 200 | cap = PR_CAP_BE; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 201 | } else if (!strcmp(args[0], "queue")) { |
| 202 | tv = &proxy->timeout.queue; |
| 203 | td = &defpx->timeout.queue; |
| 204 | cap = PR_CAP_BE; |
Willy Tarreau | ce887fd | 2012-05-12 12:50:00 +0200 | [diff] [blame] | 205 | } else if (!strcmp(args[0], "tunnel")) { |
| 206 | tv = &proxy->timeout.tunnel; |
| 207 | td = &defpx->timeout.tunnel; |
| 208 | cap = PR_CAP_BE; |
Willy Tarreau | 05cdd96 | 2014-05-10 14:30:07 +0200 | [diff] [blame] | 209 | } else if (!strcmp(args[0], "client-fin")) { |
| 210 | tv = &proxy->timeout.clientfin; |
| 211 | td = &defpx->timeout.clientfin; |
| 212 | cap = PR_CAP_FE; |
| 213 | } else if (!strcmp(args[0], "server-fin")) { |
| 214 | tv = &proxy->timeout.serverfin; |
| 215 | td = &defpx->timeout.serverfin; |
| 216 | cap = PR_CAP_BE; |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 217 | } else { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 218 | memprintf(err, |
| 219 | "'timeout' supports 'client', 'server', 'connect', 'check', " |
Willy Tarreau | 05cdd96 | 2014-05-10 14:30:07 +0200 | [diff] [blame] | 220 | "'queue', 'http-keep-alive', 'http-request', 'tunnel', 'tarpit', " |
| 221 | "'client-fin' and 'server-fin' (got '%s')", |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 222 | args[0]); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 223 | return -1; |
| 224 | } |
| 225 | |
| 226 | if (*args[1] == 0) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 227 | memprintf(err, "'timeout %s' expects an integer value (in milliseconds)", name); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 228 | return -1; |
| 229 | } |
| 230 | |
| 231 | res = parse_time_err(args[1], &timeout, TIME_UNIT_MS); |
| 232 | if (res) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 233 | memprintf(err, "unexpected character '%c' in 'timeout %s'", *res, name); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 234 | return -1; |
| 235 | } |
| 236 | |
| 237 | if (!(proxy->cap & cap)) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 238 | memprintf(err, "'timeout %s' will be ignored because %s '%s' has no %s capability", |
| 239 | name, proxy_type_str(proxy), proxy->id, |
| 240 | (cap & PR_CAP_BE) ? "backend" : "frontend"); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 241 | retval = 1; |
| 242 | } |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 243 | else if (defpx && *tv != *td) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 244 | memprintf(err, "overwriting 'timeout %s' which was already specified", name); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 245 | retval = 1; |
| 246 | } |
Willy Tarreau | ed44649 | 2014-04-28 22:56:38 +0200 | [diff] [blame] | 247 | else if (warn) { |
| 248 | if (!already_warned(warn)) { |
| 249 | memprintf(err, "the '%s' directive is now deprecated in favor of 'timeout %s', and will not be supported in future versions.", |
| 250 | args[0], name); |
| 251 | retval = 1; |
| 252 | } |
| 253 | } |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 254 | |
Willy Tarreau | fac5b59 | 2014-05-22 08:24:46 +0200 | [diff] [blame] | 255 | if (*args[2] != 0) { |
| 256 | memprintf(err, "'timeout %s' : unexpected extra argument '%s' after value '%s'.", name, args[2], args[1]); |
| 257 | retval = -1; |
| 258 | } |
| 259 | |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 260 | *tv = MS_TO_TICKS(timeout); |
Willy Tarreau | e219db7 | 2007-12-03 01:30:13 +0100 | [diff] [blame] | 261 | return retval; |
| 262 | } |
| 263 | |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 264 | /* This function parses a "rate-limit" statement in a proxy section. It returns |
| 265 | * -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] | 266 | * return zero, it will write an error or warning message into a preallocated |
| 267 | * buffer returned at <err>. The function must be called with <args> pointing |
| 268 | * to the first command line word, with <proxy> pointing to the proxy being |
| 269 | * parsed, and <defpx> to the default proxy or NULL. |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 270 | */ |
| 271 | 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] | 272 | struct proxy *defpx, const char *file, int line, |
| 273 | char **err) |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 274 | { |
| 275 | int retval, cap; |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 276 | char *res; |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 277 | unsigned int *tv = NULL; |
| 278 | unsigned int *td = NULL; |
| 279 | unsigned int val; |
| 280 | |
| 281 | retval = 0; |
| 282 | |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 283 | if (strcmp(args[1], "sessions") == 0) { |
Willy Tarreau | 13a34bd | 2009-05-10 18:52:49 +0200 | [diff] [blame] | 284 | tv = &proxy->fe_sps_lim; |
| 285 | td = &defpx->fe_sps_lim; |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 286 | cap = PR_CAP_FE; |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 287 | } |
| 288 | else { |
| 289 | memprintf(err, "'%s' only supports 'sessions' (got '%s')", args[0], args[1]); |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 290 | return -1; |
| 291 | } |
| 292 | |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 293 | if (*args[2] == 0) { |
| 294 | 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] | 295 | return -1; |
| 296 | } |
| 297 | |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 298 | val = strtoul(args[2], &res, 0); |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 299 | if (*res) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 300 | 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] | 301 | return -1; |
| 302 | } |
| 303 | |
| 304 | if (!(proxy->cap & cap)) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 305 | memprintf(err, "%s %s will be ignored because %s '%s' has no %s capability", |
| 306 | args[0], args[1], proxy_type_str(proxy), proxy->id, |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 307 | (cap & PR_CAP_BE) ? "backend" : "frontend"); |
| 308 | retval = 1; |
| 309 | } |
| 310 | else if (defpx && *tv != *td) { |
Willy Tarreau | 0a3dd74 | 2012-05-08 19:47:01 +0200 | [diff] [blame] | 311 | 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] | 312 | retval = 1; |
| 313 | } |
| 314 | |
| 315 | *tv = val; |
| 316 | return retval; |
| 317 | } |
| 318 | |
Willy Tarreau | c35362a | 2014-04-25 13:58:37 +0200 | [diff] [blame] | 319 | /* This function parses a "max-keep-alive-queue" statement in a proxy section. |
| 320 | * It returns -1 if there is any error, 1 for a warning, otherwise zero. If it |
| 321 | * does not return zero, it will write an error or warning message into a |
| 322 | * preallocated buffer returned at <err>. The function must be called with |
| 323 | * <args> pointing to the first command line word, with <proxy> pointing to |
| 324 | * the proxy being parsed, and <defpx> to the default proxy or NULL. |
| 325 | */ |
| 326 | static int proxy_parse_max_ka_queue(char **args, int section, struct proxy *proxy, |
| 327 | struct proxy *defpx, const char *file, int line, |
| 328 | char **err) |
| 329 | { |
| 330 | int retval; |
| 331 | char *res; |
| 332 | unsigned int val; |
| 333 | |
| 334 | retval = 0; |
| 335 | |
| 336 | if (*args[1] == 0) { |
| 337 | memprintf(err, "'%s' expects expects an integer value (or -1 to disable)", args[0]); |
| 338 | return -1; |
| 339 | } |
| 340 | |
| 341 | val = strtol(args[1], &res, 0); |
| 342 | if (*res) { |
| 343 | memprintf(err, "'%s' : unexpected character '%c' in integer value '%s'", args[0], *res, args[1]); |
| 344 | return -1; |
| 345 | } |
| 346 | |
| 347 | if (!(proxy->cap & PR_CAP_BE)) { |
| 348 | memprintf(err, "%s will be ignored because %s '%s' has no backend capability", |
| 349 | args[0], proxy_type_str(proxy), proxy->id); |
| 350 | retval = 1; |
| 351 | } |
| 352 | |
| 353 | /* we store <val+1> so that a user-facing value of -1 is stored as zero (default) */ |
| 354 | proxy->max_ka_queue = val + 1; |
| 355 | return retval; |
| 356 | } |
| 357 | |
Willy Tarreau | f79d950 | 2014-03-15 07:22:35 +0100 | [diff] [blame] | 358 | /* This function inserts proxy <px> into the tree of known proxies. The proxy's |
| 359 | * name is used as the storing key so it must already have been initialized. |
| 360 | */ |
| 361 | void proxy_store_name(struct proxy *px) |
| 362 | { |
| 363 | px->conf.by_name.key = px->id; |
| 364 | ebis_insert(&proxy_by_name, &px->conf.by_name); |
| 365 | } |
| 366 | |
Krzysztof Piotr Oledzki | 6eb730d | 2007-11-03 23:41:58 +0100 | [diff] [blame] | 367 | /* |
| 368 | * This function finds a proxy with matching name, mode and with satisfying |
| 369 | * capabilities. It also checks if there are more matching proxies with |
| 370 | * requested name as this often leads into unexpected situations. |
| 371 | */ |
| 372 | |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 373 | struct proxy *findproxy_mode(const char *name, int mode, int cap) { |
Krzysztof Piotr Oledzki | 6eb730d | 2007-11-03 23:41:58 +0100 | [diff] [blame] | 374 | |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 375 | struct proxy *curproxy, *target = NULL; |
Willy Tarreau | f79d950 | 2014-03-15 07:22:35 +0100 | [diff] [blame] | 376 | struct ebpt_node *node; |
| 377 | |
| 378 | for (node = ebis_lookup(&proxy_by_name, name); node; node = ebpt_next(node)) { |
| 379 | curproxy = container_of(node, struct proxy, conf.by_name); |
| 380 | |
| 381 | if (strcmp(curproxy->id, name) != 0) |
| 382 | break; |
Krzysztof Piotr Oledzki | 6eb730d | 2007-11-03 23:41:58 +0100 | [diff] [blame] | 383 | |
Willy Tarreau | f79d950 | 2014-03-15 07:22:35 +0100 | [diff] [blame] | 384 | if ((curproxy->cap & cap) != cap) |
Krzysztof Piotr Oledzki | 6eb730d | 2007-11-03 23:41:58 +0100 | [diff] [blame] | 385 | continue; |
| 386 | |
Willy Tarreau | 51aecc7 | 2009-07-12 09:47:04 +0200 | [diff] [blame] | 387 | if (curproxy->mode != mode && |
| 388 | !(curproxy->mode == PR_MODE_HTTP && mode == PR_MODE_TCP)) { |
Krzysztof Piotr Oledzki | 6eb730d | 2007-11-03 23:41:58 +0100 | [diff] [blame] | 389 | Alert("Unable to use proxy '%s' with wrong mode, required: %s, has: %s.\n", |
| 390 | name, proxy_mode_str(mode), proxy_mode_str(curproxy->mode)); |
| 391 | Alert("You may want to use 'mode %s'.\n", proxy_mode_str(mode)); |
| 392 | return NULL; |
| 393 | } |
| 394 | |
| 395 | if (!target) { |
| 396 | target = curproxy; |
| 397 | continue; |
| 398 | } |
| 399 | |
Willy Tarreau | 816eb54 | 2007-11-04 07:04:43 +0100 | [diff] [blame] | 400 | Alert("Refusing to use duplicated proxy '%s' with overlapping capabilities: %s/%s!\n", |
Krzysztof Piotr Oledzki | 6eb730d | 2007-11-03 23:41:58 +0100 | [diff] [blame] | 401 | name, proxy_type_str(curproxy), proxy_type_str(target)); |
| 402 | |
| 403 | return NULL; |
| 404 | } |
| 405 | |
| 406 | return target; |
| 407 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 408 | |
Willy Tarreau | bc216c4 | 2011-08-02 11:25:54 +0200 | [diff] [blame] | 409 | /* Returns a pointer to the proxy matching either name <name>, or id <name> if |
| 410 | * <name> begins with a '#'. NULL is returned if no match is found, as well as |
| 411 | * if multiple matches are found (eg: too large capabilities mask). |
| 412 | */ |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 413 | struct proxy *findproxy(const char *name, int cap) { |
| 414 | |
| 415 | struct proxy *curproxy, *target = NULL; |
Willy Tarreau | 050536d | 2012-10-04 08:47:34 +0200 | [diff] [blame] | 416 | int pid = -1; |
Willy Tarreau | bc216c4 | 2011-08-02 11:25:54 +0200 | [diff] [blame] | 417 | |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame] | 418 | if (*name == '#') { |
| 419 | struct eb32_node *node; |
| 420 | |
Willy Tarreau | bc216c4 | 2011-08-02 11:25:54 +0200 | [diff] [blame] | 421 | pid = atoi(name + 1); |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 422 | |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame] | 423 | for (node = eb32_lookup(&used_proxy_id, pid); node; node = eb32_next(node)) { |
| 424 | curproxy = container_of(node, struct proxy, conf.id); |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 425 | |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame] | 426 | if (curproxy->uuid != pid) |
| 427 | break; |
| 428 | |
| 429 | if ((curproxy->cap & cap) != cap) |
| 430 | continue; |
| 431 | |
| 432 | if (target) |
| 433 | return NULL; |
| 434 | |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 435 | target = curproxy; |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 436 | } |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 437 | } |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame] | 438 | else { |
| 439 | struct ebpt_node *node; |
| 440 | |
| 441 | for (node = ebis_lookup(&proxy_by_name, name); node; node = ebpt_next(node)) { |
| 442 | curproxy = container_of(node, struct proxy, conf.by_name); |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 443 | |
Willy Tarreau | cfd837f | 2014-03-15 07:43:51 +0100 | [diff] [blame] | 444 | if (strcmp(curproxy->id, name) != 0) |
| 445 | break; |
| 446 | |
| 447 | if ((curproxy->cap & cap) != cap) |
| 448 | continue; |
| 449 | |
| 450 | if (target) |
| 451 | return NULL; |
| 452 | |
| 453 | target = curproxy; |
| 454 | } |
| 455 | } |
Alex Williams | 96532db | 2009-11-01 21:27:13 -0500 | [diff] [blame] | 456 | return target; |
| 457 | } |
| 458 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 459 | /* |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 460 | * This function finds a server with matching name within selected proxy. |
| 461 | * It also checks if there are more matching servers with |
| 462 | * requested name as this often leads into unexpected situations. |
| 463 | */ |
| 464 | |
| 465 | struct server *findserver(const struct proxy *px, const char *name) { |
| 466 | |
| 467 | struct server *cursrv, *target = NULL; |
| 468 | |
| 469 | if (!px) |
| 470 | return NULL; |
| 471 | |
| 472 | for (cursrv = px->srv; cursrv; cursrv = cursrv->next) { |
| 473 | if (strcmp(cursrv->id, name)) |
| 474 | continue; |
| 475 | |
| 476 | if (!target) { |
| 477 | target = cursrv; |
| 478 | continue; |
| 479 | } |
| 480 | |
Cyril Bonté | 0bb519e | 2012-04-04 12:57:19 +0200 | [diff] [blame] | 481 | 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] | 482 | name, px->id); |
| 483 | |
| 484 | return NULL; |
| 485 | } |
| 486 | |
| 487 | return target; |
| 488 | } |
| 489 | |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 490 | /* This function checks that the designated proxy has no http directives |
| 491 | * enabled. It will output a warning if there are, and will fix some of them. |
| 492 | * It returns the number of fatal errors encountered. This should be called |
| 493 | * at the end of the configuration parsing if the proxy is not in http mode. |
| 494 | * The <file> argument is used to construct the error message. |
| 495 | */ |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 496 | int proxy_cfg_ensure_no_http(struct proxy *curproxy) |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 497 | { |
| 498 | if (curproxy->cookie_name != NULL) { |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 499 | Warning("config : cookie will be ignored for %s '%s' (needs 'mode http').\n", |
| 500 | proxy_type_str(curproxy), curproxy->id); |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 501 | } |
| 502 | if (curproxy->rsp_exp != NULL) { |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 503 | Warning("config : server regular expressions will be ignored for %s '%s' (needs 'mode http').\n", |
| 504 | proxy_type_str(curproxy), curproxy->id); |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 505 | } |
| 506 | if (curproxy->req_exp != NULL) { |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 507 | Warning("config : client regular expressions will be ignored for %s '%s' (needs 'mode http').\n", |
| 508 | proxy_type_str(curproxy), curproxy->id); |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 509 | } |
| 510 | if (curproxy->monitor_uri != NULL) { |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 511 | Warning("config : monitor-uri will be ignored for %s '%s' (needs 'mode http').\n", |
| 512 | proxy_type_str(curproxy), curproxy->id); |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 513 | } |
Willy Tarreau | f3e49f9 | 2009-10-03 12:21:20 +0200 | [diff] [blame] | 514 | if (curproxy->lbprm.algo & BE_LB_NEED_HTTP) { |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 515 | curproxy->lbprm.algo &= ~BE_LB_ALGO; |
| 516 | curproxy->lbprm.algo |= BE_LB_ALGO_RR; |
Willy Tarreau | 915e1eb | 2009-06-22 15:48:36 +0200 | [diff] [blame] | 517 | Warning("config : Layer 7 hash not possible for %s '%s' (needs 'mode http'). Falling back to round robin.\n", |
| 518 | proxy_type_str(curproxy), curproxy->id); |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 519 | } |
Willy Tarreau | 1780416 | 2009-11-09 21:27:51 +0100 | [diff] [blame] | 520 | if (curproxy->to_log & (LW_REQ | LW_RESP)) { |
| 521 | curproxy->to_log &= ~(LW_REQ | LW_RESP); |
Willy Tarreau | 59ad1a2 | 2014-01-29 14:39:58 +0100 | [diff] [blame] | 522 | 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] | 523 | curproxy->conf.lfs_file, curproxy->conf.lfs_line, |
Willy Tarreau | 1780416 | 2009-11-09 21:27:51 +0100 | [diff] [blame] | 524 | proxy_type_str(curproxy), curproxy->id); |
| 525 | } |
Willy Tarreau | 62a6123 | 2013-04-12 18:13:46 +0200 | [diff] [blame] | 526 | if (curproxy->conf.logformat_string == default_http_log_format || |
| 527 | curproxy->conf.logformat_string == clf_http_log_format) { |
| 528 | /* Note: we don't change the directive's file:line number */ |
| 529 | curproxy->conf.logformat_string = default_tcp_log_format; |
| 530 | Warning("parsing [%s:%d] : 'option httplog' not usable with %s '%s' (needs 'mode http'). Falling back to 'option tcplog'.\n", |
| 531 | curproxy->conf.lfs_file, curproxy->conf.lfs_line, |
Willy Tarreau | 196729e | 2012-05-31 19:30:26 +0200 | [diff] [blame] | 532 | proxy_type_str(curproxy), curproxy->id); |
| 533 | } |
| 534 | |
Willy Tarreau | ff01a21 | 2009-03-15 13:46:16 +0100 | [diff] [blame] | 535 | return 0; |
| 536 | } |
| 537 | |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 538 | /* Perform the most basic initialization of a proxy : |
| 539 | * memset(), list_init(*), reset_timeouts(*). |
Willy Tarreau | b249e84 | 2011-09-07 18:41:08 +0200 | [diff] [blame] | 540 | * Any new proxy or peer should be initialized via this function. |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 541 | */ |
| 542 | void init_new_proxy(struct proxy *p) |
| 543 | { |
| 544 | memset(p, 0, sizeof(struct proxy)); |
Willy Tarreau | 3fdb366 | 2012-11-12 00:42:33 +0100 | [diff] [blame] | 545 | p->obj_type = OBJ_TYPE_PROXY; |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 546 | LIST_INIT(&p->pendconns); |
| 547 | LIST_INIT(&p->acl); |
| 548 | LIST_INIT(&p->http_req_rules); |
Willy Tarreau | e365c0b | 2013-06-11 16:06:12 +0200 | [diff] [blame] | 549 | LIST_INIT(&p->http_res_rules); |
Willy Tarreau | 353bc9f | 2014-04-28 22:05:31 +0200 | [diff] [blame] | 550 | LIST_INIT(&p->block_rules); |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 551 | LIST_INIT(&p->redirect_rules); |
| 552 | LIST_INIT(&p->mon_fail_cond); |
| 553 | LIST_INIT(&p->switching_rules); |
Willy Tarreau | 4a5cade | 2012-04-05 21:09:48 +0200 | [diff] [blame] | 554 | LIST_INIT(&p->server_rules); |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 555 | LIST_INIT(&p->persist_rules); |
| 556 | LIST_INIT(&p->sticking_rules); |
| 557 | LIST_INIT(&p->storersp_rules); |
| 558 | LIST_INIT(&p->tcp_req.inspect_rules); |
| 559 | LIST_INIT(&p->tcp_rep.inspect_rules); |
| 560 | LIST_INIT(&p->tcp_req.l4_rules); |
| 561 | LIST_INIT(&p->req_add); |
| 562 | LIST_INIT(&p->rsp_add); |
| 563 | LIST_INIT(&p->listener_queue); |
William Lallemand | 0f99e34 | 2011-10-12 17:50:54 +0200 | [diff] [blame] | 564 | LIST_INIT(&p->logsrvs); |
William Lallemand | 723b73a | 2012-02-08 16:37:49 +0100 | [diff] [blame] | 565 | LIST_INIT(&p->logformat); |
William Lallemand | a73203e | 2012-03-12 12:48:57 +0100 | [diff] [blame] | 566 | LIST_INIT(&p->format_unique_id); |
Willy Tarreau | 2a65ff0 | 2012-09-13 17:54:29 +0200 | [diff] [blame] | 567 | LIST_INIT(&p->conf.bind); |
Willy Tarreau | 4348fad | 2012-09-20 16:48:07 +0200 | [diff] [blame] | 568 | LIST_INIT(&p->conf.listeners); |
Willy Tarreau | a4312fa | 2013-04-02 16:34:32 +0200 | [diff] [blame] | 569 | LIST_INIT(&p->conf.args.list); |
Baptiste Assmann | 5ecb77f | 2013-10-06 23:24:13 +0200 | [diff] [blame] | 570 | LIST_INIT(&p->tcpcheck_rules); |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 571 | |
| 572 | /* Timeouts are defined as -1 */ |
| 573 | proxy_reset_timeouts(p); |
| 574 | p->tcp_rep.inspect_delay = TICK_ETERNITY; |
Willy Tarreau | 050536d | 2012-10-04 08:47:34 +0200 | [diff] [blame] | 575 | |
| 576 | /* initial uuid is unassigned (-1) */ |
| 577 | p->uuid = -1; |
Willy Tarreau | 237250c | 2011-07-29 01:49:03 +0200 | [diff] [blame] | 578 | } |
| 579 | |
Krzysztof Piotr Oledzki | c8b16fc | 2008-02-18 01:26:35 +0100 | [diff] [blame] | 580 | /* |
Willy Tarreau | 2ff7622 | 2007-04-09 19:29:56 +0200 | [diff] [blame] | 581 | * This function creates all proxy sockets. It should be done very early, |
| 582 | * typically before privileges are dropped. The sockets will be registered |
| 583 | * 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] | 584 | * 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] | 585 | * bound. |
Willy Tarreau | 2ff7622 | 2007-04-09 19:29:56 +0200 | [diff] [blame] | 586 | * |
| 587 | * Its return value is composed from ERR_NONE, ERR_RETRYABLE and ERR_FATAL. |
| 588 | * Retryable errors will only be printed if <verbose> is not zero. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 589 | */ |
| 590 | int start_proxies(int verbose) |
| 591 | { |
| 592 | struct proxy *curproxy; |
| 593 | struct listener *listener; |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 594 | int lerr, err = ERR_NONE; |
| 595 | int pxerr; |
| 596 | char msg[100]; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 597 | |
| 598 | for (curproxy = proxy; curproxy != NULL; curproxy = curproxy->next) { |
| 599 | if (curproxy->state != PR_STNEW) |
| 600 | continue; /* already initialized */ |
| 601 | |
| 602 | pxerr = 0; |
Willy Tarreau | 4348fad | 2012-09-20 16:48:07 +0200 | [diff] [blame] | 603 | list_for_each_entry(listener, &curproxy->conf.listeners, by_fe) { |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 604 | if (listener->state != LI_ASSIGNED) |
| 605 | continue; /* already started */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 606 | |
Emeric Brun | cf20bf1 | 2010-10-22 16:06:11 +0200 | [diff] [blame] | 607 | lerr = listener->proto->bind(listener, msg, sizeof(msg)); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 608 | |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 609 | /* errors are reported if <verbose> is set or if they are fatal */ |
| 610 | if (verbose || (lerr & (ERR_FATAL | ERR_ABORT))) { |
| 611 | if (lerr & ERR_ALERT) |
| 612 | Alert("Starting %s %s: %s\n", |
| 613 | proxy_type_str(curproxy), curproxy->id, msg); |
| 614 | else if (lerr & ERR_WARN) |
| 615 | Warning("Starting %s %s: %s\n", |
| 616 | proxy_type_str(curproxy), curproxy->id, msg); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 617 | } |
| 618 | |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 619 | err |= lerr; |
| 620 | if (lerr & (ERR_ABORT | ERR_FATAL)) { |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 621 | pxerr |= 1; |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 622 | break; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 623 | } |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 624 | else if (lerr & ERR_CODE) { |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 625 | pxerr |= 1; |
| 626 | continue; |
| 627 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 628 | } |
| 629 | |
| 630 | if (!pxerr) { |
Willy Tarreau | 562515c | 2011-07-25 08:11:52 +0200 | [diff] [blame] | 631 | curproxy->state = PR_STREADY; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 632 | send_log(curproxy, LOG_NOTICE, "Proxy %s started.\n", curproxy->id); |
| 633 | } |
Willy Tarreau | e6b9894 | 2007-10-29 01:09:36 +0100 | [diff] [blame] | 634 | |
| 635 | if (err & ERR_ABORT) |
| 636 | break; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 637 | } |
| 638 | |
| 639 | return err; |
| 640 | } |
| 641 | |
| 642 | |
| 643 | /* |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 644 | * This is the proxy management task. It enables proxies when there are enough |
| 645 | * free sessions, or stops them when the table is full. It is designed to be |
| 646 | * called as a task which is woken up upon stopping or when rate limiting must |
| 647 | * be enforced. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 648 | */ |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 649 | struct task *manage_proxy(struct task *t) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 650 | { |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 651 | struct proxy *p = t->context; |
| 652 | int next = TICK_ETERNITY; |
Willy Tarreau | 7958422 | 2009-03-06 09:18:27 +0100 | [diff] [blame] | 653 | unsigned int wait; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 654 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 655 | /* We should periodically try to enable listeners waiting for a |
| 656 | * global resource here. |
| 657 | */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 658 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 659 | /* first, let's check if we need to stop the proxy */ |
| 660 | if (unlikely(stopping && p->state != PR_STSTOPPED)) { |
| 661 | int t; |
| 662 | t = tick_remain(now_ms, p->stop_time); |
| 663 | if (t == 0) { |
| 664 | Warning("Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n", |
| 665 | p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn); |
| 666 | send_log(p, LOG_WARNING, "Proxy %s stopped (FE: %lld conns, BE: %lld conns).\n", |
| 667 | p->id, p->fe_counters.cum_conn, p->be_counters.cum_conn); |
| 668 | stop_proxy(p); |
| 669 | /* try to free more memory */ |
| 670 | pool_gc2(); |
| 671 | } |
| 672 | else { |
| 673 | next = tick_first(next, p->stop_time); |
| 674 | } |
| 675 | } |
Willy Tarreau | f3f8c70 | 2011-07-25 07:37:28 +0200 | [diff] [blame] | 676 | |
Willy Tarreau | 3a925c1 | 2013-09-04 17:54:01 +0200 | [diff] [blame] | 677 | /* If the proxy holds a stick table, we need to purge all unused |
| 678 | * entries. These are all the ones in the table with ref_cnt == 0 |
| 679 | * and all the ones in the pool used to allocate new entries. Any |
| 680 | * entry attached to an existing session waiting for a store will |
| 681 | * be in neither list. Any entry being dumped will have ref_cnt > 0. |
| 682 | * However we protect tables that are being synced to peers. |
| 683 | */ |
| 684 | if (unlikely(stopping && p->state == PR_STSTOPPED && p->table.current)) { |
| 685 | if (!p->table.syncing) { |
| 686 | stktable_trash_oldest(&p->table, p->table.current); |
| 687 | pool_gc2(); |
| 688 | } |
| 689 | if (p->table.current) { |
| 690 | /* some entries still remain, let's recheck in one second */ |
| 691 | next = tick_first(next, tick_add(now_ms, 1000)); |
| 692 | } |
| 693 | } |
| 694 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 695 | /* the rest below is just for frontends */ |
| 696 | if (!(p->cap & PR_CAP_FE)) |
| 697 | goto out; |
Willy Tarreau | f3f8c70 | 2011-07-25 07:37:28 +0200 | [diff] [blame] | 698 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 699 | /* check the various reasons we may find to block the frontend */ |
| 700 | if (unlikely(p->feconn >= p->maxconn)) { |
| 701 | if (p->state == PR_STREADY) |
| 702 | p->state = PR_STFULL; |
| 703 | goto out; |
| 704 | } |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 705 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 706 | /* OK we have no reason to block, so let's unblock if we were blocking */ |
| 707 | if (p->state == PR_STFULL) |
| 708 | p->state = PR_STREADY; |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 709 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 710 | if (p->fe_sps_lim && |
| 711 | (wait = next_event_delay(&p->fe_sess_per_sec, p->fe_sps_lim, 0))) { |
| 712 | /* we're blocking because a limit was reached on the number of |
| 713 | * requests/s on the frontend. We want to re-check ASAP, which |
| 714 | * means in 1 ms before estimated expiration date, because the |
| 715 | * timer will have settled down. |
| 716 | */ |
| 717 | next = tick_first(next, tick_add(now_ms, wait)); |
| 718 | goto out; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 719 | } |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 720 | |
| 721 | /* The proxy is not limited so we can re-enable any waiting listener */ |
| 722 | if (!LIST_ISEMPTY(&p->listener_queue)) |
| 723 | dequeue_all_listeners(&p->listener_queue); |
| 724 | out: |
| 725 | t->expire = next; |
| 726 | task_queue(t); |
| 727 | return t; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 728 | } |
| 729 | |
| 730 | |
| 731 | /* |
| 732 | * this function disables health-check servers so that the process will quickly be ignored |
| 733 | * by load balancers. Note that if a proxy was already in the PAUSED state, then its grace |
| 734 | * time will not be used since it would already not listen anymore to the socket. |
| 735 | */ |
| 736 | void soft_stop(void) |
| 737 | { |
| 738 | struct proxy *p; |
Willy Tarreau | bbe11b1 | 2011-07-25 11:16:24 +0200 | [diff] [blame] | 739 | struct peers *prs; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 740 | |
| 741 | stopping = 1; |
| 742 | p = proxy; |
Willy Tarreau | b0b37bc | 2008-06-23 14:00:57 +0200 | [diff] [blame] | 743 | 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] | 744 | while (p) { |
| 745 | if (p->state != PR_STSTOPPED) { |
Willy Tarreau | f8fbcef | 2008-10-10 17:51:34 +0200 | [diff] [blame] | 746 | Warning("Stopping %s %s in %d ms.\n", proxy_cap_str(p->cap), p->id, p->grace); |
| 747 | 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] | 748 | p->stop_time = tick_add(now_ms, p->grace); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 749 | } |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 750 | if (p->table.size && p->table.sync_task) |
| 751 | task_wakeup(p->table.sync_task, TASK_WOKEN_MSG); |
| 752 | |
Willy Tarreau | 918ff60 | 2011-07-25 16:33:49 +0200 | [diff] [blame] | 753 | /* wake every proxy task up so that they can handle the stopping */ |
Willy Tarreau | d1a33e3 | 2012-10-04 00:14:33 +0200 | [diff] [blame] | 754 | if (p->task) |
| 755 | task_wakeup(p->task, TASK_WOKEN_MSG); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 756 | p = p->next; |
| 757 | } |
Willy Tarreau | bbe11b1 | 2011-07-25 11:16:24 +0200 | [diff] [blame] | 758 | |
| 759 | prs = peers; |
| 760 | while (prs) { |
| 761 | stop_proxy((struct proxy *)prs->peers_fe); |
| 762 | prs = prs->next; |
| 763 | } |
Willy Tarreau | d0807c3 | 2010-08-27 18:26:11 +0200 | [diff] [blame] | 764 | /* signal zero is used to broadcast the "stopping" event */ |
| 765 | signal_handler(0); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 766 | } |
| 767 | |
| 768 | |
Willy Tarreau | be58c38 | 2011-07-24 18:28:10 +0200 | [diff] [blame] | 769 | /* Temporarily disables listening on all of the proxy's listeners. Upon |
| 770 | * success, the proxy enters the PR_PAUSED state. If disabling at least one |
| 771 | * 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] | 772 | * because we don't know how to resume from this. The function returns 0 |
| 773 | * if it fails, or non-zero on success. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 774 | */ |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 775 | int pause_proxy(struct proxy *p) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 776 | { |
| 777 | struct listener *l; |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 778 | |
| 779 | if (!(p->cap & PR_CAP_FE) || p->state == PR_STERROR || |
| 780 | p->state == PR_STSTOPPED || p->state == PR_STPAUSED) |
| 781 | return 1; |
| 782 | |
| 783 | Warning("Pausing %s %s.\n", proxy_cap_str(p->cap), p->id); |
| 784 | send_log(p, LOG_WARNING, "Pausing %s %s.\n", proxy_cap_str(p->cap), p->id); |
| 785 | |
Willy Tarreau | 4348fad | 2012-09-20 16:48:07 +0200 | [diff] [blame] | 786 | list_for_each_entry(l, &p->conf.listeners, by_fe) { |
Willy Tarreau | be58c38 | 2011-07-24 18:28:10 +0200 | [diff] [blame] | 787 | if (!pause_listener(l)) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 788 | p->state = PR_STERROR; |
| 789 | } |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 790 | |
| 791 | if (p->state == PR_STERROR) { |
| 792 | Warning("%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id); |
| 793 | send_log(p, LOG_WARNING, "%s %s failed to enter pause mode.\n", proxy_cap_str(p->cap), p->id); |
| 794 | return 0; |
| 795 | } |
| 796 | |
| 797 | p->state = PR_STPAUSED; |
| 798 | return 1; |
Willy Tarreau | da250db | 2008-10-12 12:07:48 +0200 | [diff] [blame] | 799 | } |
| 800 | |
| 801 | |
| 802 | /* |
| 803 | * This function completely stops a proxy and releases its listeners. It has |
| 804 | * to be called when going down in order to release the ports so that another |
| 805 | * process may bind to them. It must also be called on disabled proxies at the |
| 806 | * end of start-up. When all listeners are closed, the proxy is set to the |
| 807 | * PR_STSTOPPED state. |
| 808 | */ |
| 809 | void stop_proxy(struct proxy *p) |
| 810 | { |
| 811 | struct listener *l; |
| 812 | |
Willy Tarreau | 4348fad | 2012-09-20 16:48:07 +0200 | [diff] [blame] | 813 | list_for_each_entry(l, &p->conf.listeners, by_fe) { |
Willy Tarreau | da250db | 2008-10-12 12:07:48 +0200 | [diff] [blame] | 814 | unbind_listener(l); |
| 815 | if (l->state >= LI_ASSIGNED) { |
| 816 | delete_listener(l); |
| 817 | listeners--; |
Willy Tarreau | af7ad00 | 2010-08-31 15:39:26 +0200 | [diff] [blame] | 818 | jobs--; |
Willy Tarreau | da250db | 2008-10-12 12:07:48 +0200 | [diff] [blame] | 819 | } |
| 820 | } |
| 821 | p->state = PR_STSTOPPED; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 822 | } |
| 823 | |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 824 | /* This function resumes listening on the specified proxy. It scans all of its |
| 825 | * listeners and tries to enable them all. If any of them fails, the proxy is |
| 826 | * put back to the paused state. It returns 1 upon success, or zero if an error |
| 827 | * is encountered. |
| 828 | */ |
| 829 | int resume_proxy(struct proxy *p) |
| 830 | { |
| 831 | struct listener *l; |
| 832 | int fail; |
| 833 | |
| 834 | if (p->state != PR_STPAUSED) |
| 835 | return 1; |
| 836 | |
| 837 | Warning("Enabling %s %s.\n", proxy_cap_str(p->cap), p->id); |
| 838 | send_log(p, LOG_WARNING, "Enabling %s %s.\n", proxy_cap_str(p->cap), p->id); |
| 839 | |
| 840 | fail = 0; |
Willy Tarreau | 4348fad | 2012-09-20 16:48:07 +0200 | [diff] [blame] | 841 | list_for_each_entry(l, &p->conf.listeners, by_fe) { |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 842 | if (!resume_listener(l)) { |
| 843 | int port; |
| 844 | |
| 845 | port = get_host_port(&l->addr); |
| 846 | if (port) { |
| 847 | Warning("Port %d busy while trying to enable %s %s.\n", |
| 848 | port, proxy_cap_str(p->cap), p->id); |
| 849 | send_log(p, LOG_WARNING, "Port %d busy while trying to enable %s %s.\n", |
| 850 | port, proxy_cap_str(p->cap), p->id); |
| 851 | } |
| 852 | else { |
| 853 | Warning("Bind on socket %d busy while trying to enable %s %s.\n", |
| 854 | l->luid, proxy_cap_str(p->cap), p->id); |
| 855 | send_log(p, LOG_WARNING, "Bind on socket %d busy while trying to enable %s %s.\n", |
| 856 | l->luid, proxy_cap_str(p->cap), p->id); |
| 857 | } |
| 858 | |
| 859 | /* Another port might have been enabled. Let's stop everything. */ |
| 860 | fail = 1; |
| 861 | break; |
| 862 | } |
| 863 | } |
| 864 | |
| 865 | p->state = PR_STREADY; |
| 866 | if (fail) { |
| 867 | pause_proxy(p); |
| 868 | return 0; |
| 869 | } |
| 870 | return 1; |
| 871 | } |
| 872 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 873 | /* |
| 874 | * This function temporarily disables listening so that another new instance |
| 875 | * can start listening. It is designed to be called upon reception of a |
| 876 | * SIGTTOU, after which either a SIGUSR1 can be sent to completely stop |
| 877 | * the proxy, or a SIGTTIN can be sent to listen again. |
| 878 | */ |
| 879 | void pause_proxies(void) |
| 880 | { |
| 881 | int err; |
| 882 | struct proxy *p; |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 883 | struct peers *prs; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 884 | |
| 885 | err = 0; |
| 886 | p = proxy; |
Willy Tarreau | b0b37bc | 2008-06-23 14:00:57 +0200 | [diff] [blame] | 887 | 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] | 888 | while (p) { |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 889 | err |= !pause_proxy(p); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 890 | p = p->next; |
| 891 | } |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 892 | |
| 893 | prs = peers; |
| 894 | while (prs) { |
| 895 | p = prs->peers_fe; |
Willy Tarreau | ce8fe25 | 2011-09-07 19:14:57 +0200 | [diff] [blame] | 896 | err |= !pause_proxy(p); |
| 897 | prs = prs->next; |
Emeric Brun | 5a8c0a9 | 2010-09-23 18:44:36 +0200 | [diff] [blame] | 898 | } |
| 899 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 900 | if (err) { |
| 901 | Warning("Some proxies refused to pause, performing soft stop now.\n"); |
| 902 | send_log(p, LOG_WARNING, "Some proxies refused to pause, performing soft stop now.\n"); |
| 903 | soft_stop(); |
| 904 | } |
| 905 | } |
| 906 | |
| 907 | |
| 908 | /* |
| 909 | * This function reactivates listening. This can be used after a call to |
| 910 | * sig_pause(), for example when a new instance has failed starting up. |
| 911 | * It is designed to be called upon reception of a SIGTTIN. |
| 912 | */ |
Willy Tarreau | be58c38 | 2011-07-24 18:28:10 +0200 | [diff] [blame] | 913 | void resume_proxies(void) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 914 | { |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 915 | int err; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 916 | struct proxy *p; |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 917 | struct peers *prs; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 918 | |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 919 | err = 0; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 920 | p = proxy; |
Willy Tarreau | b0b37bc | 2008-06-23 14:00:57 +0200 | [diff] [blame] | 921 | 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] | 922 | while (p) { |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 923 | err |= !resume_proxy(p); |
| 924 | p = p->next; |
| 925 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 926 | |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 927 | prs = peers; |
| 928 | while (prs) { |
| 929 | p = prs->peers_fe; |
| 930 | err |= !resume_proxy(p); |
| 931 | prs = prs->next; |
| 932 | } |
Willy Tarreau | be58c38 | 2011-07-24 18:28:10 +0200 | [diff] [blame] | 933 | |
Willy Tarreau | c03ebbf | 2011-09-07 21:33:14 +0200 | [diff] [blame] | 934 | if (err) { |
| 935 | Warning("Some proxies refused to resume, a restart is probably needed to resume safe operations.\n"); |
| 936 | 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] | 937 | } |
| 938 | } |
| 939 | |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 940 | /* Set current session's backend to <be>. Nothing is done if the |
| 941 | * session already had a backend assigned, which is indicated by |
| 942 | * s->flags & SN_BE_ASSIGNED. |
| 943 | * All flags, stats and counters which need be updated are updated. |
Willy Tarreau | bedb9ba | 2009-07-12 08:27:39 +0200 | [diff] [blame] | 944 | * 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] | 945 | */ |
Willy Tarreau | bedb9ba | 2009-07-12 08:27:39 +0200 | [diff] [blame] | 946 | int session_set_backend(struct session *s, struct proxy *be) |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 947 | { |
| 948 | if (s->flags & SN_BE_ASSIGNED) |
Willy Tarreau | bedb9ba | 2009-07-12 08:27:39 +0200 | [diff] [blame] | 949 | return 1; |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 950 | s->be = be; |
| 951 | be->beconn++; |
Willy Tarreau | 7d0aaf3 | 2011-03-10 23:25:56 +0100 | [diff] [blame] | 952 | if (be->beconn > be->be_counters.conn_max) |
| 953 | be->be_counters.conn_max = be->beconn; |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 954 | proxy_inc_be_ctr(be); |
| 955 | |
| 956 | /* assign new parameters to the session from the new backend */ |
Willy Tarreau | f27b5ea | 2009-10-03 22:01:18 +0200 | [diff] [blame] | 957 | s->si[1].flags &= ~SI_FL_INDEP_STR; |
| 958 | if (be->options2 & PR_O2_INDEPSTR) |
| 959 | s->si[1].flags |= SI_FL_INDEP_STR; |
| 960 | |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 961 | if (be->options2 & PR_O2_RSPBUG_OK) |
| 962 | s->txn.rsp.err_pos = -1; /* let buggy responses pass */ |
| 963 | s->flags |= SN_BE_ASSIGNED; |
Willy Tarreau | 51aecc7 | 2009-07-12 09:47:04 +0200 | [diff] [blame] | 964 | |
| 965 | /* If the target backend requires HTTP processing, we have to allocate |
| 966 | * a struct hdr_idx for it if we did not have one. |
| 967 | */ |
Willy Tarreau | 25320b2 | 2013-03-24 07:22:08 +0100 | [diff] [blame] | 968 | if (unlikely(!s->txn.hdr_idx.v && be->http_needed)) { |
Willy Tarreau | f767ac5 | 2014-04-28 16:13:51 +0200 | [diff] [blame] | 969 | s->txn.hdr_idx.size = global.tune.max_http_hdr; |
Willy Tarreau | 34eb671 | 2011-10-24 18:15:04 +0200 | [diff] [blame] | 970 | if ((s->txn.hdr_idx.v = pool_alloc2(pool2_hdr_idx)) == NULL) |
Willy Tarreau | 51aecc7 | 2009-07-12 09:47:04 +0200 | [diff] [blame] | 971 | return 0; /* not enough memory */ |
Willy Tarreau | 39e4f62 | 2010-05-31 17:01:36 +0200 | [diff] [blame] | 972 | |
| 973 | /* and now initialize the HTTP transaction state */ |
| 974 | http_init_txn(s); |
Willy Tarreau | 51aecc7 | 2009-07-12 09:47:04 +0200 | [diff] [blame] | 975 | } |
| 976 | |
Willy Tarreau | 2e47a3a | 2014-09-30 18:44:22 +0200 | [diff] [blame] | 977 | /* If we chain to an HTTP backend running a different HTTP mode, we |
| 978 | * have to re-adjust the desired keep-alive/close mode to accommodate |
| 979 | * both the frontend's and the backend's modes. |
| 980 | */ |
| 981 | if (s->fe->mode == PR_MODE_HTTP && be->mode == PR_MODE_HTTP && |
| 982 | ((s->fe->options & PR_O_HTTP_MODE) != (be->options & PR_O_HTTP_MODE))) |
| 983 | http_adjust_conn_mode(s, &s->txn, &s->txn.req); |
| 984 | |
Willy Tarreau | 80a92c0 | 2014-03-12 10:41:13 +0100 | [diff] [blame] | 985 | /* If an LB algorithm needs to access some pre-parsed body contents, |
| 986 | * we must not start to forward anything until the connection is |
| 987 | * confirmed otherwise we'll lose the pointer to these data and |
| 988 | * prevent the hash from being doable again after a redispatch. |
| 989 | */ |
| 990 | if (be->mode == PR_MODE_HTTP && |
| 991 | (be->lbprm.algo & (BE_LB_KIND | BE_LB_PARM)) == (BE_LB_KIND_HI | BE_LB_HASH_PRM)) |
| 992 | s->txn.req.flags |= HTTP_MSGF_WAIT_CONN; |
| 993 | |
Willy Tarreau | 96e3121 | 2011-05-30 18:10:30 +0200 | [diff] [blame] | 994 | if (be->options2 & PR_O2_NODELAY) { |
Willy Tarreau | 03cdb7c | 2012-08-27 23:14:58 +0200 | [diff] [blame] | 995 | s->req->flags |= CF_NEVER_WAIT; |
| 996 | s->rep->flags |= CF_NEVER_WAIT; |
Willy Tarreau | 96e3121 | 2011-05-30 18:10:30 +0200 | [diff] [blame] | 997 | } |
| 998 | |
Willy Tarreau | c1a2167 | 2009-08-16 22:37:44 +0200 | [diff] [blame] | 999 | /* We want to enable the backend-specific analysers except those which |
| 1000 | * were already run as part of the frontend/listener. Note that it would |
| 1001 | * be more reliable to store the list of analysers that have been run, |
| 1002 | * but what we do here is OK for now. |
Emeric Brun | 647caf1 | 2009-06-30 17:57:00 +0200 | [diff] [blame] | 1003 | */ |
Willy Tarreau | c1a2167 | 2009-08-16 22:37:44 +0200 | [diff] [blame] | 1004 | s->req->analysers |= be->be_req_ana & ~(s->listener->analysers); |
Emeric Brun | 647caf1 | 2009-06-30 17:57:00 +0200 | [diff] [blame] | 1005 | |
Willy Tarreau | bedb9ba | 2009-07-12 08:27:39 +0200 | [diff] [blame] | 1006 | return 1; |
Willy Tarreau | 1d0dfb1 | 2009-07-07 15:10:31 +0200 | [diff] [blame] | 1007 | } |
| 1008 | |
Willy Tarreau | dc13c11 | 2013-06-21 23:16:39 +0200 | [diff] [blame] | 1009 | static struct cfg_kw_list cfg_kws = {ILH, { |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 1010 | { CFG_LISTEN, "timeout", proxy_parse_timeout }, |
| 1011 | { CFG_LISTEN, "clitimeout", proxy_parse_timeout }, |
| 1012 | { CFG_LISTEN, "contimeout", proxy_parse_timeout }, |
| 1013 | { CFG_LISTEN, "srvtimeout", proxy_parse_timeout }, |
Willy Tarreau | 3a7d207 | 2009-03-05 23:48:25 +0100 | [diff] [blame] | 1014 | { CFG_LISTEN, "rate-limit", proxy_parse_rate_limit }, |
Willy Tarreau | c35362a | 2014-04-25 13:58:37 +0200 | [diff] [blame] | 1015 | { CFG_LISTEN, "max-keep-alive-queue", proxy_parse_max_ka_queue }, |
Willy Tarreau | 9de1bbd | 2008-07-09 20:34:27 +0200 | [diff] [blame] | 1016 | { 0, NULL, NULL }, |
| 1017 | }}; |
| 1018 | |
| 1019 | __attribute__((constructor)) |
| 1020 | static void __proxy_module_init(void) |
| 1021 | { |
| 1022 | cfg_register_keywords(&cfg_kws); |
| 1023 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1024 | |
| 1025 | /* |
| 1026 | * Local variables: |
| 1027 | * c-indent-level: 8 |
| 1028 | * c-basic-offset: 8 |
| 1029 | * End: |
| 1030 | */ |