; TCPStreamIP Example
; -------------------

; This program is server AND client at once: it listens on a
; port, then connects to itself over the loopback address.

port=4006

server=CreateTCPServer(port)
If server=0 Then
    Print "Could not listen on port "+port+" (it may be in use)"
Else
    Print "Server: listening on port "+port

    client=OpenTCPStream("127.0.0.1",port)
    If client=0 Then
        Print "Client: could not connect"
    Else
        ; The server accepts the incoming connection - poll briefly,
        ; because AcceptTCPStream returns 0 until one has arrived
        accepted=0
        For try=1 To 100
            accepted=AcceptTCPStream(server)
            If accepted<>0 Then Exit
            Delay 10
        Next

        If accepted=0 Then
            Print "Server: no connection arrived"
        Else
            ; TCPStreamIP returns the address of the OTHER end of
            ; the stream, as a packed integer for DottedIP
            Print "Client's stream: talking to "+DottedIP$(TCPStreamIP(client))+" (the server)"
            Print "Server's stream: talking to "+DottedIP$(TCPStreamIP(accepted))+" (the client)"
            Print "Both report the loopback address, as expected here"

            CloseTCPStream accepted
        EndIf
        CloseTCPStream client
    EndIf
    CloseTCPServer server
    Print "Server: closed"
EndIf

Print ""
Print "Press any key to close the example"
WaitKey

End