Bind and Listen on an Available Port in a Range

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Demonstrates Socket.BindAndListenPortRange, which searches an inclusive port range for an available TCP port, binds it, and begins listening. It returns the selected port, or -1 on failure.

Background. This is useful when any of several ports is acceptable and the application needs to discover which one was bound.

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Chilkat.Socket socket = new Chilkat.Socket();

//  Search the inclusive port range for an available TCP port, bind it, and begin listening.  The
//  method returns the selected port, or -1 when no port can be bound.
int boundPort = socket.BindAndListenPortRange(5000,5100,25);
if (boundPort < 0) {
    Debug.WriteLine(socket.LastErrorText);
    return;
}

Debug.WriteLine("Listening on port " + Convert.ToString(boundPort));