select_echo_multiclient.py

#!/usr/bin/env python3
# encoding: utf-8
#
# Copyright (c) 2010 Doug Hellmann.  All rights reserved.
#
"""Client half of echo example
"""

#end_pymotw_header
import socket
import sys

messages = [
    'This is the message. ',
    'It will be sent ',
    'in parts.',
]
server_address = ('localhost', 10000)

# Create a TCP/IP socket
socks = [
    socket.socket(socket.AF_INET, socket.SOCK_STREAM),
    socket.socket(socket.AF_INET, socket.SOCK_STREAM),
]

# Connect the socket to the port where the server is listening
print('connecting to {} port {}'.format(*server_address),
      file=sys.stderr)
for s in socks:
    s.connect(server_address)

for message in messages:
    outgoing_data = message.encode()

    # Send messages on both sockets
    for s in socks:
        print('{}: sending {!r}'.format(s.getsockname(),
                                        outgoing_data),
              file=sys.stderr)
        s.send(outgoing_data)

    # Read responses on both sockets
    for s in socks:
        data = s.recv(1024)
        print('{}: received {!r}'.format(s.getsockname(),
                                         data),
              file=sys.stderr)
        if not data:
            print('closing socket', s.getsockname(),
                  file=sys.stderr)
            s.close()