#import serial
import struct
import socket
import sys

#Serial.begin(9600)

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server_address = ('localhost', 65534)
sock.bind(server_address)

sock.listen(1)

while True:
    connection, client_address = sock.accept()

    print("Klient ", client_address, " podłączony")
    try:
        while True:
            data = connection.recv(4096)

            if data:
                if (data << 1) == 1:
                    #Serial.println('a')
                    print("a")
                elif (data << 1) == 0:
                    #Serial.println('b')
                    print("b")

                if (data << 0) == 1:
                    #Serial.println('c')
                    print("c")
                elif (data << 0) == 0:
                    #Serial.println('d')
                    print("d")

            else:
                break

    finally:
        connection.close()