/*
* pjsip_udp_transport_start2()
*
* Create a UDP socket in the specified address and start a transport.
*/
PJ_DEF(pj_status_t) pjsip_udp_transport_start2(
pjsip_endpoint *endpt,
const pjsip_udp_transport_cfg *cfg,
pjsip_transport **p_transport)
{
pj_sock_t sock;
pj_status_t status;
pjsip_host_port addr_name;
char addr_buf[PJ_INET6_ADDRSTRLEN];
pjsip_transport_type_e transport_type;
pj_uint16_t af;
int addr_len;
PJ_ASSERT_RETURN(endpt && cfg && cfg->async_cnt, PJ_EINVAL);
if (cfg->bind_addr.addr.sa_family == pj_AF_INET()) {
af = pj_AF_INET();
transport_type = PJSIP_TRANSPORT_UDP;
addr_len = sizeof(pj_sockaddr_in);
} else {
af = pj_AF_INET6();
transport_type = PJSIP_TRANSPORT_UDP6;
addr_len = sizeof(pj_sockaddr_in6);
}
status = create_socket(af, &cfg->bind_addr, addr_len, &sock);
if (status != PJ_SUCCESS)
return status;
/* Apply QoS, if specified */
pj_sock_apply_qos2(sock, cfg->qos_type, &cfg->qos_params,
2, THIS_FILE, "SIP UDP transport");
/* Apply sockopt, if specified */
if (cfg->sockopt_params.cnt)
pj_sock_setsockopt_params(sock, &cfg->sockopt_params);
if (cfg->addr_name.host.slen == 0) {
/* Address name is not specified.
* Build a name based on bound address.
*/
status = get_published_name(sock, addr_buf, sizeof(addr_buf),
&addr_name);
if (status != PJ_SUCCESS) {
pj_sock_close(sock);
return status;
}
} else {
addr_name = cfg->addr_name;
}
return pjsip_udp_transport_attach2(endpt, transport_type, sock,
&addr_name, cfg->async_cnt,
p_transport);
}
/*
* This is the public API to create, initialize, register, and start the
* TCP listener.
*/
PJ_DEF(pj_status_t) pjsip_tcp_transport_start3(
pjsip_endpoint *endpt,
const pjsip_tcp_transport_cfg *cfg,
pjsip_tpfactory **p_factory
)
{
pj_pool_t *pool;
pj_sock_t sock = PJ_INVALID_SOCKET;
struct tcp_listener *listener;
pj_activesock_cfg asock_cfg;
pj_activesock_cb listener_cb;
pj_sockaddr *listener_addr;
int addr_len;
pj_status_t status;
/* Sanity check */
PJ_ASSERT_RETURN(endpt && cfg->async_cnt, PJ_EINVAL);
/* Verify that address given in a_name (if any) is valid */
if (cfg->addr_name.host.slen) {
pj_sockaddr tmp;
status = pj_sockaddr_init(cfg->af, &tmp, &cfg->addr_name.host,
(pj_uint16_t)cfg->addr_name.port);
if (status != PJ_SUCCESS || !pj_sockaddr_has_addr(&tmp) ||
(cfg->af==pj_AF_INET() &&
tmp.ipv4.sin_addr.s_addr==PJ_INADDR_NONE))
{
/* Invalid address */
return PJ_EINVAL;
}
}
pool = pjsip_endpt_create_pool(endpt, "tcplis", POOL_LIS_INIT,
POOL_LIS_INC);
PJ_ASSERT_RETURN(pool, PJ_ENOMEM);
listener = PJ_POOL_ZALLOC_T(pool, struct tcp_listener);
listener->factory.pool = pool;
listener->factory.type = cfg->af==pj_AF_INET() ? PJSIP_TRANSPORT_TCP :
PJSIP_TRANSPORT_TCP6;
listener->factory.type_name = (char*)
pjsip_transport_get_type_name(listener->factory.type);
listener->factory.flag =
pjsip_transport_get_flag_from_type(listener->factory.type);
listener->qos_type = cfg->qos_type;
pj_memcpy(&listener->qos_params, &cfg->qos_params,
sizeof(cfg->qos_params));
pj_memcpy(&listener->sockopt_params, &cfg->sockopt_params,
sizeof(cfg->sockopt_params));
pj_ansi_strcpy(listener->factory.obj_name, "tcplis");
if (listener->factory.type==PJSIP_TRANSPORT_TCP6)
pj_ansi_strcat(listener->factory.obj_name, "6");
status = pj_lock_create_recursive_mutex(pool, listener->factory.obj_name,
&listener->factory.lock);
if (status != PJ_SUCCESS)
goto on_error;
/* Create socket */
status = pj_sock_socket(cfg->af, pj_SOCK_STREAM(), 0, &sock);
if (status != PJ_SUCCESS)
goto on_error;
/* Apply QoS, if specified */
status = pj_sock_apply_qos2(sock, cfg->qos_type, &cfg->qos_params,
2, listener->factory.obj_name,
"SIP TCP listener socket");
/* Apply SO_REUSEADDR */
if (cfg->reuse_addr) {
int enabled = 1;
status = pj_sock_setsockopt(sock, pj_SOL_SOCKET(), pj_SO_REUSEADDR(),
&enabled, sizeof(enabled));
if (status != PJ_SUCCESS) {
PJ_PERROR(4,(listener->factory.obj_name, status,
"Warning: error applying SO_REUSEADDR"));
}
}
/* Apply socket options, if specified */
if (cfg->sockopt_params.cnt)
status = pj_sock_setsockopt_params(sock, &cfg->sockopt_params);
/* Bind address may be different than factory.local_addr because
* factory.local_addr will be resolved below.
*/
pj_sockaddr_cp(&listener->bound_addr, &cfg->bind_addr);
/* Bind socket */
listener_addr = &listener->factory.local_addr;
pj_sockaddr_cp(listener_addr, &cfg->bind_addr);
status = pj_sock_bind(sock, listener_addr,
pj_sockaddr_get_len(listener_addr));
if (status != PJ_SUCCESS)
goto on_error;
/* Retrieve the bound address */
addr_len = pj_sockaddr_get_len(listener_addr);
status = pj_sock_getsockname(sock, listener_addr, &addr_len);
if (status != PJ_SUCCESS)
goto on_error;
/* If published host/IP is specified, then use that address as the
* listener advertised address.
*/
if (cfg->addr_name.host.slen) {
/* Copy the address */
listener->factory.addr_name = cfg->addr_name;
pj_strdup(listener->factory.pool, &listener->factory.addr_name.host,
&cfg->addr_name.host);
listener->factory.addr_name.port = cfg->addr_name.port;
} else {
/* No published address is given, use the bound address */
/* If the address returns 0.0.0.0, use the default
* interface address as the transport's address.
*/
if (!pj_sockaddr_has_addr(listener_addr)) {
pj_sockaddr hostip;
status = pj_gethostip(listener->bound_addr.addr.sa_family,
&hostip);
if (status != PJ_SUCCESS)
goto on_error;
pj_sockaddr_copy_addr(listener_addr, &hostip);
}
/* Save the address name */
sockaddr_to_host_port(listener->factory.pool,
&listener->factory.addr_name,
listener_addr);
}
/* If port is zero, get the bound port */
if (listener->factory.addr_name.port == 0) {
listener->factory.addr_name.port = pj_sockaddr_get_port(listener_addr);
}
pj_ansi_snprintf(listener->factory.obj_name,
sizeof(listener->factory.obj_name),
"tcplis:%d", listener->factory.addr_name.port);
/* Start listening to the address */
status = pj_sock_listen(sock, PJSIP_TCP_TRANSPORT_BACKLOG);
if (status != PJ_SUCCESS)
goto on_error;
/* Create active socket */
pj_activesock_cfg_default(&asock_cfg);
if (cfg->async_cnt > MAX_ASYNC_CNT)
asock_cfg.async_cnt = MAX_ASYNC_CNT;
else
asock_cfg.async_cnt = cfg->async_cnt;
/* Create group lock */
status = pj_grp_lock_create(pool, NULL, &listener->grp_lock);
if (status != PJ_SUCCESS)
return status;
pj_grp_lock_add_ref(listener->grp_lock);
pj_grp_lock_add_handler(listener->grp_lock, pool, listener,
&lis_on_destroy);
asock_cfg.grp_lock = listener->grp_lock;
pj_bzero(&listener_cb, sizeof(listener_cb));
listener_cb.on_accept_complete = &on_accept_complete;
status = pj_activesock_create(pool, sock, pj_SOCK_STREAM(), &asock_cfg,
pjsip_endpt_get_ioqueue(endpt),
&listener_cb, listener,
&listener->asock);
/* Register to transport manager */
listener->endpt = endpt;
listener->tpmgr = pjsip_endpt_get_tpmgr(endpt);
listener->factory.create_transport = lis_create_transport;
listener->factory.destroy = lis_destroy;
listener->is_registered = PJ_TRUE;
status = pjsip_tpmgr_register_tpfactory(listener->tpmgr,
&listener->factory);
if (status != PJ_SUCCESS) {
listener->is_registered = PJ_FALSE;
goto on_error;
}
/* Start pending accept() operations */
status = pj_activesock_start_accept(listener->asock, pool);
if (status != PJ_SUCCESS)
goto on_error;
PJ_LOG(4,(listener->factory.obj_name,
"SIP TCP listener ready for incoming connections at %.*s:%d",
(int)listener->factory.addr_name.host.slen,
listener->factory.addr_name.host.ptr,
listener->factory.addr_name.port));
/* Return the pointer to user */
if (p_factory) *p_factory = &listener->factory;
return PJ_SUCCESS;
on_error:
if (listener->asock==NULL && sock!=PJ_INVALID_SOCKET)
pj_sock_close(sock);
lis_destroy(&listener->factory);
return status;
}
/* This callback is called by transport manager for the TCP factory
* to create outgoing transport to the specified destination.
*/
static pj_status_t lis_create_transport(pjsip_tpfactory *factory,
pjsip_tpmgr *mgr,
pjsip_endpoint *endpt,
const pj_sockaddr *rem_addr,
int addr_len,
pjsip_transport **p_transport)
{
struct tcp_listener *listener;
struct tcp_transport *tcp;
pj_sock_t sock;
pj_sockaddr local_addr;
pj_status_t status;
/* Sanity checks */
PJ_ASSERT_RETURN(factory && mgr && endpt && rem_addr &&
addr_len && p_transport, PJ_EINVAL);
/* Check that address is a sockaddr_in or sockaddr_in6*/
PJ_ASSERT_RETURN((rem_addr->addr.sa_family == pj_AF_INET() &&
addr_len == sizeof(pj_sockaddr_in)) ||
(rem_addr->addr.sa_family == pj_AF_INET6() &&
addr_len == sizeof(pj_sockaddr_in6)), PJ_EINVAL);
listener = (struct tcp_listener*)factory;
/* Create socket */
status = pj_sock_socket(rem_addr->addr.sa_family, pj_SOCK_STREAM(),
0, &sock);
if (status != PJ_SUCCESS)
return status;
/* Apply QoS, if specified */
status = pj_sock_apply_qos2(sock, listener->qos_type,
&listener->qos_params,
2, listener->factory.obj_name,
"outgoing SIP TCP socket");
/* Apply socket options, if specified */
if (listener->sockopt_params.cnt)
status = pj_sock_setsockopt_params(sock, &listener->sockopt_params);
/* Bind to listener's address and any port */
pj_bzero(&local_addr, sizeof(local_addr));
pj_sockaddr_cp(&local_addr, &listener->bound_addr);
pj_sockaddr_set_port(&local_addr, 0);
status = pj_sock_bind(sock, &local_addr,
pj_sockaddr_get_len(&local_addr));
if (status != PJ_SUCCESS) {
pj_sock_close(sock);
return status;
}
/* Get the local port */
addr_len = sizeof(local_addr);
status = pj_sock_getsockname(sock, &local_addr, &addr_len);
if (status != PJ_SUCCESS) {
pj_sock_close(sock);
return status;
}
/* Initially set the address from the listener's address */
if (!pj_sockaddr_has_addr(&local_addr)) {
pj_sockaddr_copy_addr(&local_addr, &listener->factory.local_addr);
}
/* Create the transport descriptor */
status = tcp_create(listener, NULL, sock, PJ_FALSE, &local_addr,
rem_addr, &tcp);
if (status != PJ_SUCCESS)
return status;
/* Start asynchronous connect() operation */
tcp->has_pending_connect = PJ_TRUE;
status = pj_activesock_start_connect(tcp->asock, tcp->base.pool, rem_addr,
addr_len);
if (status == PJ_SUCCESS) {
on_connect_complete(tcp->asock, PJ_SUCCESS);
} else if (status != PJ_EPENDING) {
tcp_destroy(&tcp->base, status);
return status;
}
if (tcp->has_pending_connect) {
/* Update (again) local address, just in case local address currently
* set is different now that asynchronous connect() is started.
*/
addr_len = sizeof(local_addr);
if (pj_sock_getsockname(sock, &local_addr, &addr_len)==PJ_SUCCESS) {
pj_sockaddr *tp_addr = &tcp->base.local_addr;
/* Some systems (like old Win32 perhaps) may not set local address
* properly before socket is fully connected.
*/
if (pj_sockaddr_cmp(tp_addr, &local_addr) &&
pj_sockaddr_has_addr(&local_addr) &&
pj_sockaddr_get_port(&local_addr) != 0)
{
pj_sockaddr_cp(tp_addr, &local_addr);
sockaddr_to_host_port(tcp->base.pool, &tcp->base.local_name,
&local_addr);
}
}
PJ_LOG(4,(tcp->base.obj_name,
"TCP transport %.*s:%d is connecting to %.*s:%d...",
(int)tcp->base.local_name.host.slen,
tcp->base.local_name.host.ptr,
tcp->base.local_name.port,
(int)tcp->base.remote_name.host.slen,
tcp->base.remote_name.host.ptr,
tcp->base.remote_name.port));
}
/* Done */
*p_transport = &tcp->base;
return PJ_SUCCESS;
}
/*
* This callback is called by active socket when pending accept() operation
* has completed.
*/
static pj_bool_t on_accept_complete(pj_activesock_t *asock,
pj_sock_t sock,
const pj_sockaddr_t *src_addr,
int src_addr_len)
{
struct tcp_listener *listener;
struct tcp_transport *tcp;
char addr[PJ_INET6_ADDRSTRLEN+10];
pjsip_tp_state_callback state_cb;
pj_sockaddr tmp_src_addr;
pj_status_t status;
PJ_UNUSED_ARG(src_addr_len);
listener = (struct tcp_listener*) pj_activesock_get_user_data(asock);
PJ_ASSERT_RETURN(sock != PJ_INVALID_SOCKET, PJ_TRUE);
PJ_LOG(4,(listener->factory.obj_name,
"TCP listener %.*s:%d: got incoming TCP connection "
"from %s, sock=%d",
(int)listener->factory.addr_name.host.slen,
listener->factory.addr_name.host.ptr,
listener->factory.addr_name.port,
pj_sockaddr_print(src_addr, addr, sizeof(addr), 3),
sock));
/* Apply QoS, if specified */
status = pj_sock_apply_qos2(sock, listener->qos_type,
&listener->qos_params,
2, listener->factory.obj_name,
"incoming SIP TCP socket");
/* Apply socket options, if specified */
if (listener->sockopt_params.cnt)
status = pj_sock_setsockopt_params(sock, &listener->sockopt_params);
/* tcp_create() expect pj_sockaddr, so copy src_addr to temporary var,
* just in case.
*/
pj_bzero(&tmp_src_addr, sizeof(tmp_src_addr));
pj_sockaddr_cp(&tmp_src_addr, src_addr);
/*
* Incoming connection!
* Create TCP transport for the new socket.
*/
status = tcp_create( listener, NULL, sock, PJ_TRUE,
&listener->factory.local_addr,
&tmp_src_addr, &tcp);
if (status == PJ_SUCCESS) {
status = tcp_start_read(tcp);
if (status != PJ_SUCCESS) {
PJ_LOG(3,(tcp->base.obj_name, "New transport cancelled"));
tcp_destroy(&tcp->base, status);
} else {
/* Start keep-alive timer */
if (PJSIP_TCP_KEEP_ALIVE_INTERVAL) {
pj_time_val delay = {PJSIP_TCP_KEEP_ALIVE_INTERVAL, 0};
pjsip_endpt_schedule_timer(listener->endpt,
&tcp->ka_timer,
&delay);
tcp->ka_timer.id = PJ_TRUE;
pj_gettimeofday(&tcp->last_activity);
}
/* Notify application of transport state accepted */
state_cb = pjsip_tpmgr_get_state_cb(tcp->base.tpmgr);
if (state_cb) {
pjsip_transport_state_info state_info;
pj_bzero(&state_info, sizeof(state_info));
(*state_cb)(&tcp->base, PJSIP_TP_STATE_CONNECTED, &state_info);
}
}
}
return PJ_TRUE;
}