mirror of
http://git.haproxy.org/git/haproxy.git/
synced 2024-12-24 21:52:17 +00:00
00cf70f28b
Instead of just storing the last connection in the session, store all of the connections, for at most MAX_SRV_LIST (currently 5) targets. That way we can do keepalive on more than 1 outgoing connection when the client uses HTTP/2.
123 lines
3.3 KiB
C
123 lines
3.3 KiB
C
/*
|
|
* include/proto/session.h
|
|
* This file defines everything related to sessions.
|
|
*
|
|
* Copyright (C) 2000-2015 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 _PROTO_SESSION_H
|
|
#define _PROTO_SESSION_H
|
|
|
|
#include <common/config.h>
|
|
#include <common/buffer.h>
|
|
#include <common/debug.h>
|
|
#include <common/memory.h>
|
|
|
|
#include <types/global.h>
|
|
#include <types/session.h>
|
|
|
|
#include <proto/stick_table.h>
|
|
|
|
extern struct pool_head *pool_head_session;
|
|
struct session *session_new(struct proxy *fe, struct listener *li, enum obj_type *origin);
|
|
void session_free(struct session *sess);
|
|
int session_accept_fd(struct listener *l, int cfd, struct sockaddr_storage *addr);
|
|
|
|
/* Remove the refcount from the session to the tracked counters, and clear the
|
|
* pointer to ensure this is only performed once. The caller is responsible for
|
|
* ensuring that the pointer is valid first.
|
|
*/
|
|
static inline void session_store_counters(struct session *sess)
|
|
{
|
|
void *ptr;
|
|
int i;
|
|
struct stksess *ts;
|
|
|
|
for (i = 0; i < MAX_SESS_STKCTR; i++) {
|
|
struct stkctr *stkctr = &sess->stkctr[i];
|
|
|
|
ts = stkctr_entry(stkctr);
|
|
if (!ts)
|
|
continue;
|
|
|
|
ptr = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_CONN_CUR);
|
|
if (ptr) {
|
|
HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
|
|
|
|
stktable_data_cast(ptr, conn_cur)--;
|
|
|
|
HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
|
|
|
|
/* If data was modified, we need to touch to re-schedule sync */
|
|
stktable_touch_local(stkctr->table, ts, 0);
|
|
}
|
|
|
|
stkctr_set_entry(stkctr, NULL);
|
|
stksess_kill_if_expired(stkctr->table, ts, 1);
|
|
}
|
|
}
|
|
|
|
static inline void session_add_conn(struct session *sess, struct connection *conn, void *target)
|
|
{
|
|
int avail = -1;
|
|
int i;
|
|
|
|
for (i = 0; i < MAX_SRV_LIST; i++) {
|
|
if (sess->srv_list[i].target == target) {
|
|
avail = i;
|
|
break;
|
|
}
|
|
if (LIST_ISEMPTY(&sess->srv_list[i].list) && avail == -1)
|
|
avail = i;
|
|
}
|
|
if (avail == -1) {
|
|
struct connection *conn, *conn_back;
|
|
int count = 0;
|
|
/* We have no slot free, let's free the one with the fewer connections */
|
|
for (i = 0; i < MAX_SRV_LIST; i++) {
|
|
int count_list = 0;
|
|
list_for_each_entry(conn, &sess->srv_list[i].list, session_list)
|
|
count_list++;
|
|
if (count == 0 || count_list < count) {
|
|
count = count_list;
|
|
avail = i;
|
|
}
|
|
}
|
|
/* Now unown all the connections */
|
|
list_for_each_entry_safe(conn, conn_back, &sess->srv_list[avail].list, session_list) {
|
|
conn->owner = NULL;
|
|
LIST_DEL(&conn->session_list);
|
|
LIST_INIT(&conn->session_list);
|
|
if (conn->mux)
|
|
conn->mux->destroy(conn);
|
|
}
|
|
|
|
}
|
|
sess->srv_list[avail].target = target;
|
|
LIST_ADDQ(&sess->srv_list[avail].list, &conn->session_list);
|
|
}
|
|
|
|
|
|
#endif /* _PROTO_SESSION_H */
|
|
|
|
/*
|
|
* Local variables:
|
|
* c-indent-level: 8
|
|
* c-basic-offset: 8
|
|
* End:
|
|
*/
|