#! /usr/bin/python2
from displaylib import *
import sys
import socket
from time import sleep

# Initialize displaywires
# 27 = rev2
# 21 = rev1
messages = ["A","B","C","D"]
disp = Display(25, 24, 23, 17, 27, 22, 20)
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
s.bind(("", 50000)) 
s.listen(1)

def drawScreen():
        disp.printStr(1,"l",messages[0])
        disp.printStr(2,"l",messages[1])
        disp.printStr(3,"l",messages[2])
        disp.printStr(4,"l",messages[3])

drawScreen()


try: 
    while True: 
        komm, addr = s.accept() 
        while True: 
            data = komm.recv(1024)

            if not data: 
                komm.close() 
                break

            messages = messages[1:4]
            messages.append(data)
            drawScreen()
finally: 
    s.close()