import socket
import time
############################################################
##
## TCP Server Socket - By Fischetti P.
##
############################################################
##
## Serve un solo client.
## Per servire un altro client occorre riavviare
## il programma.
##
############################################################

TCP_PORT = 6000
TCP_IP = '127.0.0.1'

sk = socket.socket(socket.AF_INET, socket.SOCK_STREAM)


sk.bind((TCP_IP, TCP_PORT))
sk.listen(1)

BUFFER_SIZE = 1024
print ('Waiting connection on ',socket.gethostname(),TCP_PORT)
conn, addr = sk.accept()
print ('Connection address:', addr)
while 1:
     data = conn.recv(BUFFER_SIZE)
     if not data: break
     print ("received data:", data)
     conn.send(data)  # echo
conn.close()