Implement somewhat improved support for 481 Call leg does not exist responses...

- There are some questions on what to do here, but it is a first step.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@21131 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 7ddc5a5..1806c67 100644 (file)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -10268,6 +10268,8 @@ static void handle_response(struct sip_pvt *p, int resp, char *rest, struct sip_
                        if (sipmethod == SIP_MESSAGE) {
                                /* We successfully transmitted a message */
                                ast_set_flag(&p->flags[0], SIP_NEEDDESTROY);    
+                       } else if (sipmethod == SIP_INVITE) {
+                               handle_response_invite(p, resp, rest, req, seqno);
                        } else if (sipmethod == SIP_NOTIFY) {
                                /* They got the notify, this is the end */
                                if (p->owner) {
@@ -10278,9 +10280,7 @@ static void handle_response(struct sip_pvt *p, int resp, char *rest, struct sip_
                                                ast_set_flag(&p->flags[0], SIP_NEEDDESTROY); 
                                        }
                                }
-                       } else if (sipmethod == SIP_INVITE)
-                               handle_response_invite(p, resp, rest, req, seqno);
-                       else if (sipmethod == SIP_REGISTER)
+                       } else if (sipmethod == SIP_REGISTER)
                                res = handle_response_register(p, resp, rest, req, ignore, seqno);
                        break;
                case 202:   /* Transfer accepted */
@@ -10337,6 +10337,35 @@ static void handle_response(struct sip_pvt *p, int resp, char *rest, struct sip_
                                ast_set_flag(&p->flags[0], SIP_NEEDDESTROY);    
 
                        break;
+               case 481: /* Call leg does not exist */
+                       if (sipmethod == SIP_INVITE) {
+                               /* First we ACK */
+                               transmit_request(p, SIP_ACK, seqno, 0, 0);
+                                       ast_log(LOG_WARNING, "INVITE with REPLACEs failed to '%s'\n", get_header(&p->initreq, "From"));
+                               if (owner)
+                                       ast_queue_control(p->owner, AST_CONTROL_CONGESTION);
+                               sip_scheddestroy(p, SIP_TRANS_TIMEOUT);
+                       } else if (sipmethod == SIP_REFER) {
+                               /* A transfer with Replaces did not work */
+                               /* OEJ: We should Set flag, cancel the REFER, go back
+                               to original call - but right now we can't */
+                               ast_log(LOG_WARNING, "Remote host can't match request %s to call '%s'. Giving up.\n", sip_methods[sipmethod].text, p->callid);
+                               if (owner)
+                                       ast_queue_control(p->owner, AST_CONTROL_CONGESTION);
+                               ast_set_flag(&p->flags[0], SIP_NEEDDESTROY);
+                       } else if (sipmethod == SIP_BYE) {
+                               /* The other side has no transaction to bye,
+                               just assume it's all right then */
+                               ast_log(LOG_WARNING, "Remote host can't match request %s to call '%s'. Giving up.\n", sip_methods[sipmethod].text, p->callid);
+                       } else if (sipmethod == SIP_CANCEL) {
+                               /* The other side has no transaction to cancel,
+                               just assume it's all right then */
+                               ast_log(LOG_WARNING, "Remote host can't match request %s to call '%s'. Giving up.\n", sip_methods[sipmethod].text, p->callid);
+                       } else {
+                               ast_log(LOG_WARNING, "Remote host can't match request %s to call '%s'. Giving up.\n", sip_methods[sipmethod].text, p->callid);
+                               /* Guessing that this is not an important request */
+                       }
+                       break;
                case 491: /* Pending */
                        if (sipmethod == SIP_INVITE)
                                handle_response_invite(p, resp, rest, req, seqno);