gui + small fixes

src/control_server.c

@@ -419,6 +419,10 @@ static void client_read_callback(socket_t fd, void* arg) {
     if (received == SOCKET_ERROR) {
         int err = WSAGetLastError();
         if (err != WSAEWOULDBLOCK) {
+            if (err == 10054) {
+                client->connected = 0;
+                return;
+            }
             if (server && server->log_file) {
                 fprintf(server->log_file, "%llu: [ERROR] Client recv error: %d\n", 
                        (unsigned long long)get_timestamp_ms(), err);