Relay proper SIP responses on calling side.

Revision 351130 broke corect HANGUPCAUSE setting
for the 404 case in chan_sip. Other cases were also
potentially broken. This patch fixes the relaying
of causes to be what they used to be.

(closes issue ASTERISK-19914)
Reported by Pavel Troller
Tested by Walter Doekes (via a reviewboard test to be committed later)
Patches:
	chan_sip.diff uploaded by Pavel Troller (license #6302)
........

Merged revisions 368498 from http://svn.asterisk.org/svn/asterisk/branches/1.8
........

Merged revisions 368499 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@368500 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -21340,7 +21340,7 @@ static void handle_response_invite(struct sip_pvt *p, int resp, const char *rest
 		ast_log(LOG_WARNING, "Received response: \"Forbidden\" from '%s'\n", sip_get_header(&p->initreq, "From"));
 		if (!req->ignore && p->owner) {
 			ast_set_hangupsource(p->owner, ast_channel_name(p->owner), 0);
-			ast_queue_hangup_with_cause(p->owner, AST_CAUSE_CONGESTION);
+			ast_queue_hangup_with_cause(p->owner, hangup_sip2cause(resp));
 		}
 		break;
 
@@ -21348,7 +21348,7 @@ static void handle_response_invite(struct sip_pvt *p, int resp, const char *rest
 		xmitres = transmit_request(p, SIP_ACK, seqno, XMIT_UNRELIABLE, FALSE);
 		if (p->owner && !req->ignore) {
 			ast_set_hangupsource(p->owner, ast_channel_name(p->owner), 0);
-			ast_queue_hangup_with_cause(p->owner, AST_CAUSE_CONGESTION);
+			ast_queue_hangup_with_cause(p->owner, hangup_sip2cause(resp));
 		}
 		break;
 
@@ -21358,7 +21358,7 @@ static void handle_response_invite(struct sip_pvt *p, int resp, const char *rest
 		ast_log(LOG_WARNING, "Re-invite to non-existing call leg on other UA. SIP dialog '%s'. Giving up.\n", p->callid);
 		xmitres = transmit_request(p, SIP_ACK, seqno, XMIT_UNRELIABLE, FALSE);
 		if (p->owner) {
-			ast_queue_hangup_with_cause(p->owner, AST_CAUSE_CONGESTION);
+			ast_queue_hangup_with_cause(p->owner, hangup_sip2cause(resp));
 		}
 		break;
 
@@ -21373,7 +21373,7 @@ static void handle_response_invite(struct sip_pvt *p, int resp, const char *rest
 		append_history(p, "Identity", "SIP identity is required. Not supported by Asterisk.");
 		ast_log(LOG_WARNING, "SIP identity required by proxy. SIP dialog '%s'. Giving up.\n", p->callid);
 		if (p->owner && !req->ignore) {
-			ast_queue_hangup_with_cause(p->owner, AST_CAUSE_CONGESTION);
+			ast_queue_hangup_with_cause(p->owner, hangup_sip2cause(resp));
 		}
 		break;
 
@@ -21407,7 +21407,7 @@ static void handle_response_invite(struct sip_pvt *p, int resp, const char *rest
 		} else {
 			/* We can't set up this call, so give up */
 			if (p->owner && !req->ignore) {
-				ast_queue_hangup_with_cause(p->owner, AST_CAUSE_CONGESTION);
+				ast_queue_hangup_with_cause(p->owner, hangup_sip2cause(resp));
 			}
 		}
 		break;
@@ -21415,7 +21415,7 @@ static void handle_response_invite(struct sip_pvt *p, int resp, const char *rest
 		xmitres = transmit_request(p, SIP_ACK, seqno, XMIT_UNRELIABLE, FALSE);
 		if (p->owner && !req->ignore) {
 			if (ast_channel_state(p->owner) != AST_STATE_UP) {
-				ast_queue_hangup_with_cause(p->owner, AST_CAUSE_CONGESTION);
+				ast_queue_hangup_with_cause(p->owner, hangup_sip2cause(resp));
 			} else {
 				/* This is a re-invite that failed. */
 				/* Reset the flag after a while
@@ -21439,7 +21439,7 @@ static void handle_response_invite(struct sip_pvt *p, int resp, const char *rest
 	case 501: /* Not implemented */
 		xmitres = transmit_request(p, SIP_ACK, seqno, XMIT_UNRELIABLE, FALSE);
 		if (p->owner) {
-			ast_queue_hangup_with_cause(p->owner, AST_CAUSE_CONGESTION);
+			ast_queue_hangup_with_cause(p->owner, hangup_sip2cause(resp));
 		}
 		break;
 	}
@@ -22363,7 +22363,7 @@ static void handle_response(struct sip_pvt *p, int resp, const char *rest, struc
 				default:
 					/* Send hangup */	
 					if (owner && sipmethod != SIP_BYE)
-						ast_queue_hangup_with_cause(p->owner, AST_CAUSE_PROTOCOL_ERROR);
+						ast_queue_hangup_with_cause(p->owner, hangup_sip2cause(resp));
 					break;
 				}
 				/* ACK on invite */