/*
* Temporarily pause or shutdown the transport.
*/
PJ_DEF(pj_status_t) pjsip_udp_transport_pause(pjsip_transport *transport,
unsigned option)
{
struct udp_transport *tp;
unsigned i;
PJ_ASSERT_RETURN(transport != NULL, PJ_EINVAL);
/* Flag must be specified */
PJ_ASSERT_RETURN((option & 0x03) != 0, PJ_EINVAL);
tp = (struct udp_transport*) transport;
/* Transport must not have been paused */
PJ_ASSERT_RETURN(tp->is_paused==0, PJ_EINVALIDOP);
/* Set transport to paused first, so that when the read callback is
* called by pj_ioqueue_post_completion() it will not try to
* re-register the rdata.
*/
tp->is_paused = PJ_TRUE;
/* Cancel the ioqueue operation. */
for (i=0; i<(unsigned)tp->rdata_cnt; ++i) {
pj_ioqueue_post_completion(tp->key,
&tp->rdata[i]->tp_info.op_key.op_key, -1);
}
/* Destroy the socket? */
if (option & PJSIP_UDP_TRANSPORT_DESTROY_SOCKET) {
if (tp->key) {
/* This implicitly closes the socket */
pj_ioqueue_unregister(tp->key);
tp->key = NULL;
} else {
/* Close socket. */
if (tp->sock && tp->sock != PJ_INVALID_SOCKET) {
pj_sock_close(tp->sock);
tp->sock = PJ_INVALID_SOCKET;
}
}
tp->sock = PJ_INVALID_SOCKET;
}
PJ_LOG(4,(tp->base.obj_name, "SIP UDP transport paused"));
return PJ_SUCCESS;
}
inline bool Pj_Async_Op::cancel(pj_ssize_t bytes_status)
{
return pj_ioqueue_post_completion(handler_->key_, this,
bytes_status) == PJ_SUCCESS;
}