#!/usr/bin/env python

# encoding: utf-8

#

# Copyright (c) 2010 Doug Hellmann. All rights reserved.

#

"""Client half of echo example

"""

#end_pymotw_header

import socket

import sys

def get_constants(prefix):

"""Create a dictionary mapping socket module

constants to their names.

"""

return dict( (getattr(socket, n), n)

for n in dir(socket)

if n.startswith(prefix)

)

families = get_constants('AF_')

types = get_constants('SOCK_')

protocols = get_constants('IPPROTO_')

# Create a TCP/IP socket

sock = socket.create_connection(('localhost', 10000))

print >>sys.stderr, 'Family :', families[sock.family]

print >>sys.stderr, 'Type :', types[sock.type]

print >>sys.stderr, 'Protocol:', protocols[sock.proto]

print >>sys.stderr

try:

# Send data

message = 'This is the message. It will be repeated.'

print >>sys.stderr, 'sending "%s"' % message

sock.sendall(message)

amount_received = 0

amount_expected = len(message)

while amount_received < amount_expected:

data = sock.recv(16)

amount_received += len(data)

print >>sys.stderr, 'received "%s"' % data

finally:

print >>sys.stderr, 'closing socket'

sock.close()