Makes Linphone ignore REFER requests with BYE method set

coreapi/callbacks.c

@@ -1065,7 +1065,15 @@ static void dtmf_received(SalOp *op, char dtmf){
 static void refer_received(Sal *sal, SalOp *op, const char *referto){
 	LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal);
 	LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
-	if (call){
+	LinphoneAddress *refer_to_addr = linphone_address_new(referto);
+	char method[20] = "";
+	
+	if(refer_to_addr) {
+		const char *tmp = linphone_address_get_method_param(refer_to_addr);
+		if(tmp) strncpy(method, tmp, sizeof(method));
+		linphone_address_destroy(refer_to_addr);
+	}
+	if (call && (strlen(method) == 0 || strcmp(method, "INVITE") == 0)) {
 		if (call->refer_to!=NULL){
 			ms_free(call->refer_to);
 		}

gtk/main.c

@@ -1958,13 +1958,22 @@ void linphone_gtk_log_handler(OrtpLogLevel lev, const char *fmt, va_list args){
 
 
 void linphone_gtk_refer_received(LinphoneCore *lc, const char *refer_to){
-	GtkEntry * uri_bar =GTK_ENTRY(linphone_gtk_get_widget(
-		linphone_gtk_get_main_window(), "uribar"));
-	char *text;
-	linphone_gtk_notify(NULL,NULL,(text=ms_strdup_printf(_("We are transferred to %s"),refer_to)));
-	g_free(text);
-	gtk_entry_set_text(uri_bar, refer_to);
-	linphone_gtk_start_call(linphone_gtk_get_main_window());
+	char method[20] = "";
+	LinphoneAddress *addr = linphone_address_new(refer_to);
+	if(addr) {
+		const char *tmp = linphone_address_get_method_param(addr);
+		strncpy(method, tmp, sizeof(20));
+		linphone_address_destroy(addr);
+	}
+	if(strlen(method) == 0 || strcmp(method, "INVITE") == 0) {
+		GtkEntry * uri_bar =GTK_ENTRY(linphone_gtk_get_widget(
+			linphone_gtk_get_main_window(), "uribar"));
+		char *text;
+		linphone_gtk_notify(NULL,NULL,(text=ms_strdup_printf(_("We are transferred to %s"),refer_to)));
+		g_free(text);
+		gtk_entry_set_text(uri_bar, refer_to);
+		linphone_gtk_start_call(linphone_gtk_get_main_window());
+	}
 }
 
 static void linphone_gtk_check_soundcards(void){