haproxy/include/haproxy/session-t.h
Christopher Faulet d517396f8e MINOR: session: Add the idle duration field into the session
The idle duration between two streams is added to the session structure. It
is not necessarily pertinent on all protocols. In fact, it is only defined
for H1 connections. It is the duration between two H1 transactions. But the
.get_cs_info() callback function on the multiplexers only exists because
this duration is missing at the session level. So it is a simplification
opportunity for a really low cost.

To reduce the cost, a hole in the session structure is filled by moving
.srv_list field at the end of the structure.
2020-12-04 14:41:48 +01:00

77 lines
2.8 KiB
C

/*
* include/haproxy/session-t.h
* This file defines everything related to sessions.
*
* Copyright (C) 2000-2020 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 _HAPROXY_SESSION_T_H
#define _HAPROXY_SESSION_T_H
#include <sys/time.h>
#include <unistd.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <haproxy/api-t.h>
#include <haproxy/obj_type-t.h>
#include <haproxy/stick_table-t.h>
#include <haproxy/task-t.h>
#include <haproxy/vars-t.h>
/* session flags */
enum {
SESS_FL_NONE = 0x00000000, /* nothing */
SESS_FL_PREFER_LAST = 0x00000001, /* NTML authent, we should reuse last conn */
};
/* max number of idle server connections kept attached to a session */
#define MAX_SRV_LIST 5
struct session {
struct proxy *fe; /* the proxy this session depends on for the client side */
struct listener *listener; /* the listener by which the request arrived */
enum obj_type *origin; /* the connection / applet which initiated this session */
struct timeval accept_date; /* date of the session's accept() in user date */
struct timeval tv_accept; /* date of the session's accept() in internal date (monotonic) */
struct stkctr stkctr[MAX_SESS_STKCTR]; /* stick counters for tcp-connection */
struct vars vars; /* list of variables for the session scope. */
struct task *task; /* handshake timeout processing */
long t_handshake; /* handshake duration, -1 = not completed */
long t_idle; /* idle duration, -1 if never occurs */
int idle_conns; /* Number of connections we're currently responsible for that we are not using */
unsigned int flags; /* session flags, SESS_FL_* */
struct list srv_list; /* List of servers and the connections the session is currently responsible for */
};
struct sess_srv_list {
void *target;
struct list conn_list; /* Head of the connections list */
struct list srv_list; /* Next element of the server list */
};
#endif /* _HAPROXY_SESSION_T_H */
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/