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- Add a few comments to sip_xmit 

- Make sure that we are aware of a pending INVITE even if we're using TCP


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@99839 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Olle Johansson 2008-01-23 10:18:13 +00:00
parent 6139e1ed82
commit 16315ae2f3
1 changed files with 13 additions and 7 deletions
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20
channels/chan_sip.c
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@ -1587,7 +1587,8 @@ static struct sip_auth *authl = NULL;
/* --- Sockets and networking --------------*/
/*! \brief Main socket for SIP communication.
* sipsock is shared between the manager thread (which handles reload
*
* sipsock is shared between the SIP manager thread (which handles reload
* requests), the io handler (sipsock_read()) and the user routines that
* issue writes (using __sip_xmit()).
* The socket is -1 only when opening fails (this is a permanent condition),
@ -2483,7 +2484,11 @@ static inline const char *get_transport(enum sip_transport t)
return "UNKNOWN";
}
/*! \brief Transmit SIP message */
/*! \brief Transmit SIP message
Sends a SIP request or response on a given socket (in the pvt)
Called by retrans_pkt, send_request, send_response and
__sip_reliable_xmit
*/
static int __sip_xmit(struct sip_pvt *p, char *data, int len)
{
int res = 0;
@ -2767,6 +2772,11 @@ static enum sip_result __sip_reliable_xmit(struct sip_pvt *p, int seqno, int res
int siptimer_a = DEFAULT_RETRANS;
int xmitres = 0;
if (sipmethod == SIP_INVITE) {
/* Note this is a pending invite */
p->pendinginvite = seqno;
}
/* If the transport is something reliable (TCP or TLS) then don't really send this reliably */
/* I removed the code from retrans_pkt that does the same thing so it doesn't get loaded into the scheduler */
/* According to the RFC some packets need to be retransmitted even if its TCP, so this needs to get revisited */
@ -2792,7 +2802,7 @@ static enum sip_result __sip_reliable_xmit(struct sip_pvt *p, int seqno, int res
pkt->is_fatal = fatal;
pkt->owner = dialog_ref(p);
pkt->next = p->packets;
p->packets = pkt;
p->packets = pkt; /* Add it to the queue */
pkt->timer_t1 = p->timer_t1; /* Set SIP timer T1 */
if (pkt->timer_t1)
siptimer_a = pkt->timer_t1 * 2;
@ -2802,10 +2812,6 @@ static enum sip_result __sip_reliable_xmit(struct sip_pvt *p, int seqno, int res
siptimer_a, retrans_pkt, pkt, 1);
if (sipdebug)
ast_debug(4, "*** SIP TIMER: Initializing retransmit timer on packet: Id #%d\n", pkt->retransid);
if (sipmethod == SIP_INVITE) {
/* Note this is a pending invite */
p->pendinginvite = seqno;
}
xmitres = __sip_xmit(pkt->owner, pkt->data, pkt->packetlen); /* Send packet */