func: void tcp_start_incoming_migration(const char *host_port, Error **errp)
  
  {
  
      int s;
  
  
  
      s = inet_listen(host_port, NULL, 256, SOCK_STREAM, 0, errp);
  
      if (s < 0) {
  
          return;
  
      }
  
  
  
      qemu_set_fd_handler2(s, NULL, tcp_accept_incoming_migration, NULL,
  
                           (void *)(intptr_t)s);
  
  }
  