Send error message if we fail to allocate sip socket, possibly caused by too few

file handles (wasn't possible before, but with the new way of sending temp messages, it is).

Found this bug under heavy load testing with SIPP.

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.2@47655 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 91db38a2f729e467b367a93eb26c2fab2a5312ee..ca692d915cedcb6c58baadce9e1f940675c06076 100644 (file)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -3263,6 +3263,19 @@ static struct sip_pvt *find_call(struct sip_request *req, struct sockaddr_in *si
                p = sip_alloc(callid, sin, 1, intended_method);
                if (p)
                        ast_mutex_lock(&p->lock);
+               else {
+                       /* We have a memory or file/socket error (can't allocate RTP sockets or something) so we're not
+                               getting a dialog from sip_alloc. 
+
+                               Without a dialog we can't retransmit and handle ACKs and all that, but at least
+                               send an error message.
+
+                               Sorry, we apologize for the inconvienience
+                       */
+                       transmit_response_using_temp(callid, sin, 1, intended_method, req, "500 Server internal error");
+                       if (option_debug > 3)
+                               ast_log(LOG_DEBUG, "Failed allocating SIP dialog, sending 500 Server internal error and giving up\n");
+               }
        }
 
        return p;