#############################################################
# Client side: use sockets to send data to the server, and 
# print server's reply to each message line; 'localhost' 
# means that the server is running on the same machine as 
# the client, which lets us test client and server on one 
# machine;  to test over the net, run a server on a remote 
# machine, and set serverHost or argv[1] to machine's domain
# name or IP addr;  Python sockets are a portable BSD socket
# interface, with object methods for standard socket calls;
#############################################################

import sys
from socket import *              # portable socket interface plus constants
serverHost = 'localhost'          # server name, or: 'starship.python.net'
serverPort = 50007                # non-reserved port used by the server

message = ['Hello network world']           # default text to send to server
if len(sys.argv) > 1:
    serverHost = sys.argv[1]                # or server from cmd line arg 1
    if len(sys.argv) > 2:                   # or text from cmd line args 2..n
        message = sys.argv[2:]              # one message for each arg listed

sockobj = socket(AF_INET, SOCK_STREAM)      # make a TCP/IP socket object
sockobj.connect((serverHost, serverPort))   # connect to server machine and port

for line in message:
    sockobj.send(line)                      # send line to server over socket
    data = sockobj.recv(1024)               # receive line from server: up to 1k
    print 'Client received:', `data`

sockobj.close()                             # close socket to send eof to server