Multiple sockets listening on same port

Hi,

A number of times I ran into the situation where I started a http server but forgot that an other one was already running. This resulted strange behavior and led to confusion.

The Socket class doesn't detect that the given port is already bound to an other socket.

        socket1 := Socket newTCP.
        socket1 listenOn: 9999.

        socket2 := Socket newTCP.
        socket2 listenOn: 9999.         "I expected this to fail"

Both sockets are in WaitinForConnection status and isValid returns true.

Is this normal? Is there a way to detect this anyway?