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/* $Id$ */
/*
* Copyright (C) 2003-2006 Benny Prijono <benny@prijono.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <pjsip/sip_transport_tcp.h>
#include <pjsip/sip_endpoint.h>
#include <pj/assert.h>
#include <pj/errno.h>
#include <pj/ioqueue.h>
#include <pj/lock.h>
#include <pj/pool.h>
#include <pj/string.h>
#define MAX_ASYNC_CNT 16
#define POOL_INIT 4000
#define POOL_INC 4000
struct tcp_listener;
struct pending_accept
{
pj_ioqueue_op_key_t op_key;
struct tcp_listener *listener;
pj_sock_t new_sock;
int addr_len;
pj_sockaddr_in local_addr;
pj_sockaddr_in remote_addr;
};
struct tcp_listener
{
pjsip_tpfactory factory;
pj_bool_t active;
pjsip_tpmgr *tpmgr;
pj_sock_t sock;
pj_ioqueue_key_t *key;
unsigned async_cnt;
struct pending_accept accept_op[MAX_ASYNC_CNT];
};
struct tcp_transport
{
pjsip_transport base;
pj_sock_t sock;
};
/*
* This callback is called when #pj_ioqueue_accept completes.
*/
static void on_accept_complete( pj_ioqueue_key_t *key,
pj_ioqueue_op_key_t *op_key,
pj_sock_t sock,
pj_status_t status);
static pj_status_t destroy_listener(struct tcp_listener *listener);
static pj_status_t create_transport(pjsip_tpfactory *factory,
pjsip_tpmgr *mgr,
pjsip_endpoint *endpt,
const pj_sockaddr *rem_addr,
int addr_len,
pjsip_transport **transport);
PJ_DEF(pj_status_t) pjsip_tcp_transport_start( pjsip_endpoint *endpt,
const pj_sockaddr_in *local,
unsigned async_cnt)
{
pj_pool_t *pool;
struct tcp_listener *listener;
pj_ioqueue_callback listener_cb;
unsigned i;
pj_status_t status;
/* Sanity check */
PJ_ASSERT_RETURN(endpt && local && async_cnt, PJ_EINVAL);
pool = pjsip_endpt_create_pool(endpt, "tcplis", POOL_INIT, POOL_INC);
PJ_ASSERT_RETURN(pool, PJ_ENOMEM);
listener = pj_pool_zalloc(pool, sizeof(struct tcp_listener));
listener->factory.pool = pool;
listener->factory.type = PJSIP_TRANSPORT_TCP;
pj_ansi_strcpy(listener->factory.type_name, "tcp");
listener->factory.flag =
pjsip_transport_get_flag_from_type(PJSIP_TRANSPORT_TCP);
listener->sock = PJ_INVALID_SOCKET;
status = pj_lock_create_recursive_mutex(pool, "tcplis",
&listener->factory.lock);
if (status != PJ_SUCCESS)
goto on_error;
/* Create and bind socket */
status = pj_sock_socket(PJ_AF_INET, PJ_SOCK_STREAM, 0, &listener->sock);
if (status != PJ_SUCCESS)
goto on_error;
pj_memcpy(&listener->factory.local_addr, local, sizeof(pj_sockaddr_in));
status = pj_sock_bind(listener->sock, local, sizeof(*local));
if (status != PJ_SUCCESS)
goto on_error;
/* Register socket to ioqeuue */
pj_memset(&listener_cb, 0, sizeof(listener_cb));
listener_cb.on_accept_complete = &on_accept_complete;
status = pj_ioqueue_register_sock(pool, pjsip_endpt_get_ioqueue(endpt),
listener->sock, listener,
&listener_cb, &listener->key);
if (status != PJ_SUCCESS)
goto on_error;
/* Start pending accept() operation */
if (async_cnt > MAX_ASYNC_CNT) async_cnt = MAX_ASYNC_CNT;
listener->async_cnt = async_cnt;
for (i=0; i<async_cnt; ++i) {
pj_ioqueue_op_key_init(&listener->accept_op[i].op_key,
sizeof(listener->accept_op[i].op_key));
listener->accept_op[i].listener = listener;
status = pj_ioqueue_accept(listener->key,
&listener->accept_op[i].op_key,
&listener->accept_op[i].new_sock,
&listener->accept_op[i].local_addr,
&listener->accept_op[i].remote_addr,
&listener->accept_op[i].addr_len);
if (status != PJ_SUCCESS)
goto on_error;
}
/* Register to transport manager */
listener->tpmgr = pjsip_endpt_get_tpmgr(endpt);
status = pjsip_tpmgr_register_tpfactory(listener->tpmgr,
&listener->factory);
if (status != PJ_SUCCESS)
goto on_error;
/* Done! */
listener->active = PJ_TRUE;
return PJ_SUCCESS;
on_error:
destroy_listener(listener);
return status;
}
static pj_status_t destroy_listener(struct tcp_listener *listener)
{
if (listener->active) {
pjsip_tpmgr_unregister_tpfactory(listener->tpmgr, &listener->factory);
listener->active = PJ_FALSE;
}
if (listener->key) {
pj_ioqueue_unregister(listener->key);
listener->key = NULL;
listener->sock = PJ_INVALID_SOCKET;
}
if (listener->sock != PJ_INVALID_SOCKET) {
pj_sock_close(listener->sock);
listener->sock = PJ_INVALID_SOCKET;
}
if (listener->factory.lock) {
pj_lock_destroy(listener->factory.lock);
listener->factory.lock = NULL;
}
if (listener->factory.pool) {
pj_pool_release(listener->factory.pool);
listener->factory.pool = NULL;
}
return PJ_SUCCESS;
}
static void on_accept_complete( pj_ioqueue_key_t *key,
pj_ioqueue_op_key_t *op_key,
pj_sock_t sock,
pj_status_t status)
{
}
static pj_status_t create_transport(pjsip_tpfactory *factory,
pjsip_tpmgr *mgr,
pjsip_endpoint *endpt,
const pj_sockaddr *rem_addr,
int addr_len,
pjsip_transport **transport)
{
}
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