| /* |
| include/types/proxy.h |
| This file defines everything related to proxies. |
| |
| Copyright (C) 2000-2007 Willy Tarreau - w@1wt.eu |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation, version 2.1 |
| exclusively. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with this library; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #ifndef _TYPES_PROXY_H |
| #define _TYPES_PROXY_H |
| |
| #include <sys/types.h> |
| #include <sys/socket.h> |
| #include <netinet/in.h> |
| #include <arpa/inet.h> |
| |
| #include <common/appsession.h> |
| #include <common/config.h> |
| #include <common/mini-clist.h> |
| #include <common/regex.h> |
| #include <common/sessionhash.h> |
| #include <common/tools.h> |
| |
| #include <types/acl.h> |
| #include <types/buffers.h> |
| #include <types/httperr.h> |
| #include <types/session.h> |
| #include <types/server.h> |
| |
| /* values for proxy->state */ |
| #define PR_STNEW 0 |
| #define PR_STIDLE 1 |
| #define PR_STRUN 2 |
| #define PR_STSTOPPED 3 |
| #define PR_STPAUSED 4 |
| #define PR_STERROR 5 |
| |
| /* values for proxy->mode */ |
| #define PR_MODE_TCP 0 |
| #define PR_MODE_HTTP 1 |
| #define PR_MODE_HEALTH 2 |
| |
| /* values for proxy->map_state */ |
| #define PR_MAP_RECALC (1 << 0) |
| |
| /* flag values for proxy->cap. This is a bitmask of capabilities supported by the proxy */ |
| #define PR_CAP_NONE 0x0000 |
| #define PR_CAP_FE 0x0001 |
| #define PR_CAP_BE 0x0002 |
| #define PR_CAP_RS 0x0004 |
| #define PR_CAP_LISTEN (PR_CAP_FE|PR_CAP_BE|PR_CAP_RS) |
| |
| /* return codes for start_proxies */ |
| #define ERR_NONE 0 /* no error */ |
| #define ERR_RETRYABLE 1 /* retryable error, may be cumulated */ |
| #define ERR_FATAL 2 /* fatal error, may be cumulated */ |
| |
| |
| struct listener { |
| int fd; /* the listen socket */ |
| struct sockaddr_storage addr; /* the address we listen to */ |
| struct listener *next; /* next address or NULL */ |
| }; |
| |
| struct proxy { |
| struct listener *listen; /* the listen addresses and sockets */ |
| struct in_addr mon_net, mon_mask; /* don't forward connections from this net (network order) FIXME: should support IPv6 */ |
| int state; /* proxy state */ |
| int options; /* PR_O_REDISP, PR_O_TRANSP, ... */ |
| int mode; /* mode = PR_MODE_TCP, PR_MODE_HTTP or PR_MODE_HEALTH */ |
| struct sockaddr_in dispatch_addr; /* the default address to connect to */ |
| union { |
| struct proxy *be; /* default backend, or NULL if none set */ |
| char *name; /* default backend name during config parse */ |
| } defbe; |
| struct list acl; /* ACL declared on this proxy */ |
| struct list block_cond; /* early blocking conditions (chained) */ |
| struct list switching_rules; /* content switching rules (chained) */ |
| int map_state; /* PR_MAP_RECALC */ |
| struct server *srv; /* known servers */ |
| int srv_act, srv_bck; /* # of running servers */ |
| int tot_wact, tot_wbck; /* total weights of active and backup servers */ |
| struct server **srv_map; /* the server map used to apply weights */ |
| int srv_map_sz; /* the size of the effective server map */ |
| int srv_rr_idx; /* next server to be elected in round robin mode */ |
| char *cookie_name; /* name of the cookie to look for */ |
| int cookie_len; /* strlen(cookie_name), computed only once */ |
| char *appsession_name; /* name of the cookie to look for */ |
| int appsession_name_len; /* strlen(appsession_name), computed only once */ |
| int appsession_len; /* length of the appsession cookie value to be used */ |
| struct appsession_hash htbl_proxy; /* Per Proxy hashtable */ |
| char *capture_name; /* beginning of the name of the cookie to capture */ |
| int capture_namelen; /* length of the cookie name to match */ |
| int capture_len; /* length of the string to be captured */ |
| struct uri_auth *uri_auth; /* if non-NULL, the (list of) per-URI authentications */ |
| char *monitor_uri; /* a special URI to which we respond with HTTP/200 OK */ |
| int monitor_uri_len; /* length of the string above. 0 if unused */ |
| struct timeval clitimeout; /* client I/O timeout (in milliseconds) */ |
| struct timeval srvtimeout; /* server I/O timeout (in milliseconds) */ |
| struct timeval contimeout; /* connect timeout (in milliseconds) */ |
| struct timeval appsession_timeout; |
| char *id; /* proxy id */ |
| struct list pendconns; /* pending connections with no server assigned yet */ |
| int nbpend, nbpend_max; /* number of pending connections with no server assigned yet */ |
| int totpend; /* total number of pending connections on this instance (for stats) */ |
| unsigned int feconn, feconn_max; /* # of active frontend sessions */ |
| unsigned int beconn, beconn_max; /* # of active backend sessions */ |
| unsigned int cum_feconn, cum_beconn; /* cumulated number of processed sessions */ |
| unsigned int maxconn; /* max # of active sessions on the frontend */ |
| unsigned int fullconn; /* #conns on backend above which servers are used at full load */ |
| struct in_addr except_net, except_mask; /* don't x-forward-for for this address. FIXME: should support IPv6 */ |
| unsigned failed_conns, failed_resp; /* failed connect() and responses */ |
| unsigned denied_req, denied_resp; /* blocked requests/responses because of security concerns */ |
| unsigned failed_req; /* failed requests (eg: invalid or timeout) */ |
| long long bytes_in; /* number of bytes transferred from the client to the server */ |
| long long bytes_out; /* number of bytes transferred from the server to the client */ |
| int conn_retries; /* maximum number of connect retries */ |
| int cap; /* supported capabilities (PR_CAP_*) */ |
| struct sockaddr_in source_addr; /* the address to which we want to bind for connect() */ |
| #ifdef CONFIG_HAP_CTTPROXY |
| struct sockaddr_in tproxy_addr; /* non-local address we want to bind to for connect() */ |
| #endif |
| struct proxy *next; |
| struct sockaddr_in logsrv1, logsrv2; /* 2 syslog servers */ |
| signed char logfac1, logfac2; /* log facility for both servers. -1 = disabled */ |
| int loglev1, loglev2; /* log level for each server, 7 by default */ |
| int to_log; /* things to be logged (LW_*) */ |
| struct timeval stop_time; /* date to stop listening, when stopping != 0 */ |
| int nb_reqadd, nb_rspadd; |
| struct hdr_exp *req_exp; /* regular expressions for request headers */ |
| struct hdr_exp *rsp_exp; /* regular expressions for response headers */ |
| int nb_req_cap, nb_rsp_cap; /* # of headers to be captured */ |
| struct cap_hdr *req_cap; /* chained list of request headers to be captured */ |
| struct cap_hdr *rsp_cap; /* chained list of response headers to be captured */ |
| struct pool_head *req_cap_pool, /* pools of pre-allocated char ** used to build the sessions */ |
| *rsp_cap_pool; |
| struct pool_head *hdr_idx_pool; /* pools of pre-allocated int* used for headers indexing */ |
| char *req_add[MAX_NEWHDR], *rsp_add[MAX_NEWHDR]; /* headers to be added */ |
| int grace; /* grace time after stop request */ |
| char *check_req; /* HTTP or SSL request to use for PR_O_HTTP_CHK|PR_O_SSL3_CHK */ |
| int check_len; /* Length of the HTTP or SSL3 request */ |
| struct chunk errmsg[HTTP_ERR_SIZE]; /* default or customized error messages for known errors */ |
| }; |
| |
| struct switching_rule { |
| struct list list; /* list linked to from the proxy */ |
| struct acl_cond *cond; /* acl condition to meet */ |
| union { |
| struct proxy *backend; /* target backend */ |
| char *name; /* target backend name during config parsing */ |
| } be; |
| }; |
| |
| extern struct proxy *proxy; |
| |
| #endif /* _TYPES_PROXY_H */ |
| |
| /* |
| * Local variables: |
| * c-indent-level: 8 |
| * c-basic-offset: 8 |
| * End: |
| */ |