add isfocus to outbound invites

src/mod/applications/mod_conference/mod_conference.c

@@ -8911,7 +8911,8 @@ static void call_setup_event_handler(switch_event_t *event)
 
 					switch_event_add_header_string(var_event, SWITCH_STACK_BOTTOM, "conference_track_status", "true");
 					switch_event_add_header_string(var_event, SWITCH_STACK_BOTTOM, "conference_track_call_id", call_id);
-                                        switch_event_add_header_string(var_event, SWITCH_STACK_BOTTOM, "sip_invite_domain", domain);
+					switch_event_add_header_string(var_event, SWITCH_STACK_BOTTOM, "sip_invite_domain", domain);
+					switch_event_add_header_string(var_event, SWITCH_STACK_BOTTOM, "sip_invite_contact_params", "~isfocus");
 
 					if (!strncasecmp(ostr, "url+", 4)) {
 						ostr += 4;

src/mod/endpoints/mod_sofia/sofia_glue.c

@@ -497,7 +497,12 @@ char *sofia_overcome_sip_uri_weakness(switch_core_session_t *session, const char
 	char *stripped = switch_core_session_strdup(session, uri);
 	char *new_uri = NULL;
 	char *p;
+	const char *url_params = NULL;
 
+	if (!zstr(params) && *params == '~') {
+		url_params = params + 1;
+		params = NULL;
+	}
 
 	stripped = sofia_glue_get_url_from_contact(stripped, 0);
 
@@ -542,7 +547,9 @@ char *sofia_overcome_sip_uri_weakness(switch_core_session_t *session, const char
 		}
 	}
 
-
+	if (url_params && !uri_only) {
+		new_uri = switch_core_session_sprintf(session, "%s;%s", new_uri, url_params);
+	}
 
 	if (!zstr(invite_tel_params)) {
 		char *lhs, *rhs = strchr(new_uri, '@');
@@ -913,7 +920,6 @@ switch_status_t sofia_glue_do_invite(switch_core_session_t *session)
 
 		switch_channel_set_variable(channel, "sip_outgoing_contact_uri", invite_contact);
 
-
 		/*
 		  Does the "genius" who wanted SIP to be "text-based" so it was "easier to read" even use it now,
 		  or did he just suggest it to make our lives miserable?