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.

loSocket = createobject("CkSocket")

//  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.
lnBoundPort = loSocket.BindAndListenPortRange(5000,5100,25)
if (lnBoundPort < 0) then
    ? loSocket.LastErrorText
    release loSocket
    return
endif

? "Listening on port " + str(lnBoundPort)


release loSocket