#!/usr/bin/env python
""" Echo server - reply back with the received message. """
import os
import signal
import socket
import sys
def sigusr1_handler(signum, frame):
print 'signal %s received, exiting ...' % signum
sys.exit(0)
def setup():
signal.signal(signal.SIGUSR1, sigusr1_handler)
def runserver():
sock = socket.socket()
sock.bind(('0.0.0.0', int(os.environ.get('PORT', '12345'))))
sock.listen(10)
while True:
c, raddr = sock.accept()
try:
d = c.recv(4096)
c.send(d if d else '')
finally:
c.close()
if "__main__" == __name__:
setup()
runserver()