Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1 | /* |
| 2 | include/types/session.h |
| 3 | This file defines everything related to sessions. |
| 4 | |
| 5 | Copyright (C) 2000-2006 Willy Tarreau - w@1wt.eu |
| 6 | |
| 7 | This library is free software; you can redistribute it and/or |
| 8 | modify it under the terms of the GNU Lesser General Public |
| 9 | License as published by the Free Software Foundation, version 2.1 |
| 10 | exclusively. |
| 11 | |
| 12 | This library is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | Lesser General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU Lesser General Public |
| 18 | License along with this library; if not, write to the Free Software |
| 19 | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 20 | */ |
| 21 | |
| 22 | #ifndef _TYPES_SESSION_H |
| 23 | #define _TYPES_SESSION_H |
| 24 | |
| 25 | |
| 26 | #include <sys/time.h> |
| 27 | #include <unistd.h> |
| 28 | #include <netinet/in.h> |
| 29 | #include <arpa/inet.h> |
| 30 | |
Willy Tarreau | e3ba5f0 | 2006-06-29 18:54:54 +0200 | [diff] [blame] | 31 | #include <common/config.h> |
Willy Tarreau | 2dd0d47 | 2006-06-29 17:53:05 +0200 | [diff] [blame] | 32 | #include <common/mini-clist.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 33 | |
| 34 | #include <types/buffers.h> |
Willy Tarreau | 3bac9ff | 2007-03-18 17:31:28 +0100 | [diff] [blame] | 35 | #include <types/proto_http.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 36 | #include <types/proxy.h> |
| 37 | #include <types/queue.h> |
| 38 | #include <types/server.h> |
| 39 | #include <types/task.h> |
| 40 | |
| 41 | |
| 42 | /* various session flags, bits values 0x01 to 0x20 (shift 0) */ |
| 43 | #define SN_DIRECT 0x00000001 /* connection made on the server matching the client cookie */ |
Willy Tarreau | 3d30059 | 2007-03-18 18:34:41 +0100 | [diff] [blame] | 44 | #define SN_ASSIGNED 0x00000002 /* no need to assign a server to this session */ |
| 45 | #define SN_ADDR_SET 0x00000004 /* this session's server address has been set */ |
| 46 | #define SN_BE_ASSIGNED 0x00000008 /* a backend was assigned. Conns are accounted. */ |
| 47 | #define SN_CONN_CLOSED 0x00000010 /* "Connection: close" was present or added */ |
| 48 | #define SN_MONITOR 0x00000020 /* this session comes from a monitoring system */ |
| 49 | #define SN_SELF_GEN 0x00000040 /* the proxy generates data for the client (eg: stats) */ |
| 50 | /* unused: 0x00000080 */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 51 | |
| 52 | /* session termination conditions, bits values 0x100 to 0x700 (0-7 shift 8) */ |
| 53 | #define SN_ERR_NONE 0x00000000 |
| 54 | #define SN_ERR_CLITO 0x00000100 /* client time-out */ |
| 55 | #define SN_ERR_CLICL 0x00000200 /* client closed (read/write error) */ |
| 56 | #define SN_ERR_SRVTO 0x00000300 /* server time-out, connect time-out */ |
| 57 | #define SN_ERR_SRVCL 0x00000400 /* server closed (connect/read/write error) */ |
| 58 | #define SN_ERR_PRXCOND 0x00000500 /* the proxy decided to close (deny...) */ |
| 59 | #define SN_ERR_RESOURCE 0x00000600 /* the proxy encountered a lack of a local resources (fd, mem, ...) */ |
| 60 | #define SN_ERR_INTERNAL 0x00000700 /* the proxy encountered an internal error */ |
| 61 | #define SN_ERR_MASK 0x00000700 /* mask to get only session error flags */ |
| 62 | #define SN_ERR_SHIFT 8 /* bit shift */ |
Willy Tarreau | 3d30059 | 2007-03-18 18:34:41 +0100 | [diff] [blame] | 63 | /* unused: 0x00000800 */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 64 | |
| 65 | /* session state at termination, bits values 0x1000 to 0x7000 (0-7 shift 12) */ |
| 66 | #define SN_FINST_R 0x00001000 /* session ended during client request */ |
| 67 | #define SN_FINST_C 0x00002000 /* session ended during server connect */ |
| 68 | #define SN_FINST_H 0x00003000 /* session ended during server headers */ |
| 69 | #define SN_FINST_D 0x00004000 /* session ended during data phase */ |
| 70 | #define SN_FINST_L 0x00005000 /* session ended while pushing last data to client */ |
| 71 | #define SN_FINST_Q 0x00006000 /* session ended while waiting in queue for a server slot */ |
Willy Tarreau | b8750a8 | 2006-09-03 09:56:00 +0200 | [diff] [blame] | 72 | #define SN_FINST_T 0x00007000 /* session ended tarpitted */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 73 | #define SN_FINST_MASK 0x00007000 /* mask to get only final session state flags */ |
| 74 | #define SN_FINST_SHIFT 12 /* bit shift */ |
Willy Tarreau | 3d30059 | 2007-03-18 18:34:41 +0100 | [diff] [blame] | 75 | /* unused: 0x00008000 */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 76 | |
Willy Tarreau | 0f7562b | 2007-01-07 15:46:13 +0100 | [diff] [blame] | 77 | |
| 78 | /* WARNING: if new fields are added, they must be initialized in event_accept() |
| 79 | * and freed in session_free() ! |
| 80 | */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 81 | struct session { |
| 82 | struct task *task; /* the task associated with this session */ |
| 83 | /* application specific below */ |
Willy Tarreau | 73de989 | 2006-11-30 11:40:23 +0100 | [diff] [blame] | 84 | struct proxy *fe; /* the proxy this session depends on for the client side */ |
Willy Tarreau | 73de989 | 2006-11-30 11:40:23 +0100 | [diff] [blame] | 85 | struct proxy *be; /* the proxy this session depends on for the server side */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 86 | int cli_fd; /* the client side fd */ |
| 87 | int srv_fd; /* the server side fd */ |
| 88 | int cli_state; /* state of the client side */ |
| 89 | int srv_state; /* state of the server side */ |
| 90 | int conn_retries; /* number of connect retries left */ |
| 91 | int flags; /* some flags describing the session */ |
| 92 | struct buffer *req; /* request buffer */ |
| 93 | struct buffer *rep; /* response buffer */ |
| 94 | struct sockaddr_storage cli_addr; /* the client address */ |
| 95 | struct sockaddr_in srv_addr; /* the address to connect to */ |
| 96 | struct server *srv; /* the server being used */ |
| 97 | struct pendconn *pend_pos; /* if not NULL, points to the position in the pending queue */ |
Willy Tarreau | b326fcc | 2007-03-03 13:54:32 +0100 | [diff] [blame] | 98 | struct http_txn txn; /* current HTTP transaction being processed. Should become a list. */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 99 | struct { |
| 100 | int logwait; /* log fields waiting to be collected : LW_* */ |
| 101 | struct timeval tv_accept; /* date of the accept() (beginning of the session) */ |
| 102 | long t_request; /* delay before the end of the request arrives, -1 if never occurs */ |
| 103 | long t_queue; /* delay before the session gets out of the connect queue, -1 if never occurs */ |
| 104 | long t_connect; /* delay before the connect() to the server succeeds, -1 if never occurs */ |
| 105 | long t_data; /* delay before the first data byte from the server ... */ |
Willy Tarreau | 3bac9ff | 2007-03-18 17:31:28 +0100 | [diff] [blame] | 106 | unsigned long t_close; /* total session duration */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 107 | unsigned long srv_queue_size; /* number of sessions waiting for a connect slot on this server at accept() time (in direct assignment) */ |
| 108 | unsigned long prx_queue_size; /* overall number of sessions waiting for a connect slot on this instance at accept() time */ |
Willy Tarreau | 35d66b0 | 2007-01-02 00:28:21 +0100 | [diff] [blame] | 109 | long long bytes_in; /* number of bytes transferred from the client to the server */ |
| 110 | long long bytes_out; /* number of bytes transferred from the server to the client */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 111 | } logs; |
| 112 | short int data_source; /* where to get the data we generate ourselves */ |
| 113 | short int data_state; /* where to get the data we generate ourselves */ |
| 114 | union { |
| 115 | struct { |
| 116 | struct proxy *px; |
| 117 | struct server *sv; |
| 118 | short px_st, sv_st; /* DATA_ST_INIT or DATA_ST_DATA */ |
| 119 | } stats; |
Willy Tarreau | 73de989 | 2006-11-30 11:40:23 +0100 | [diff] [blame] | 120 | } data_ctx; /* used by produce_content to dump the stats right now */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 121 | unsigned int uniq_id; /* unique ID used for the traces */ |
| 122 | }; |
| 123 | |
| 124 | |
| 125 | #define sizeof_session sizeof(struct session) |
| 126 | extern void **pool_session; |
| 127 | |
| 128 | |
| 129 | #endif /* _TYPES_SESSION_H */ |
| 130 | |
| 131 | /* |
| 132 | * Local variables: |
| 133 | * c-indent-level: 8 |
| 134 | * c-basic-offset: 8 |
| 135 | * End: |
| 136 | */ |