GSocket object for it.gSocketAccept(object, cancellable = NULL, .errwarn = TRUE)objectGSocket.cancellableGCancellable or NULLsocket must be bound to a local address with gSocketBind and
must be listening for incoming connections (gSocketListen).
If there are no outstanding connections then the operation will block
or return G_IO_ERROR_WOULD_BLOCK if non-blocking I/O is enabled.
To be notified of an incoming connection, wait for the G_IO_IN condition.
Since 2.22