FS-6531: #resolve set to tag on auto answer notify to make grandstream happy,…

FS-6531: #resolve set to tag on auto answer notify to make grandstream happy, even tho they could have matched the dialog fine off the from tag like every other phone does.

src/mod/endpoints/mod_sofia/sofia.c

@@ -6665,10 +6665,19 @@ static void sofia_handle_sip_i_state(switch_core_session_t *session, int status,
 	}
 
 	if (channel && (status == 180 || status == 183) && switch_channel_direction(channel) == SWITCH_CALL_DIRECTION_OUTBOUND) {
+		const char *full_to = NULL;
 		const char *val;
 		if ((val = switch_channel_get_variable(channel, "sip_auto_answer")) && switch_true(val)) {
-			nua_notify(nh, NUTAG_NEWSUB(1), NUTAG_WITH_THIS_MSG(de->data->e_msg),
-					   NUTAG_SUBSTATE(nua_substate_terminated),SIPTAG_SUBSCRIPTION_STATE_STR("terminated;reason=noresource"), SIPTAG_EVENT_STR("talk"), TAG_END());
+			full_to = switch_str_nil(switch_channel_get_variable(channel, "sip_full_to"));
+
+			nua_notify(nh,
+					   NUTAG_NEWSUB(1),
+					   NUTAG_WITH_THIS_MSG(de->data->e_msg),
+					   NUTAG_SUBSTATE(nua_substate_terminated),
+					   TAG_IF((full_to), SIPTAG_TO_STR(full_to)),
+					   SIPTAG_SUBSCRIPTION_STATE_STR("terminated;reason=noresource"),
+					   SIPTAG_EVENT_STR("talk"),
+					   TAG_END());
 		}
 	}