大家好：
    以下例子取自《programming python》第十章：
客户端：echo-client.py
#############################################################
# 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


服务器端：echo-server.py
#########################################################
# Server side: open a socket on a port, listen for
# a message from a client, and send an echo reply; 
# this is a simple one-shot listen/reply per client, 
# but it goes into an infinite loop to listen for 
# more clients as long as this server script runs; 
#########################################################

from socket import *                    # get socket constructor and constants
myHost = ''                             # server machine, '' means local host
myPort = 50007                          # listen on a non-reserved port number

sockobj = socket(AF_INET, SOCK_STREAM)       # make a TCP socket object
sockobj.bind((myHost, myPort))               # bind it to server port number 
sockobj.listen(5)                            # listen, allow 5 pending connects

while 1:                                     # listen until process killed
    connection, address = sockobj.accept()   # wait for next client connect
    print 'Server connected by', address     # connection is a new socket
    while 1:
        data = connection.recv(1024)         # read next line on client socket
        if not data: break                   # send a reply line to the client
        connection.send('Echo=>' + data)     # until eof when socket closed
    connection.close() 

我把echo-server.py用qq传给同学，在他的机器上运行
并把echo-client.py中serverHost = 'localhost'改成severhost＝他的ip，然后运行echo－client.py.
结果连不上，出错信息是：
C:\Python24>python echo-client.py
Traceback (most recent call last):
  File "echo-client.py", line 24, in ?
    sockobj.connect((serverHost, serverPort))   # connect to server machine and
port
  File "", line 1, in connect
socket.error: (10060, 'Operation timed out')

    不知出了什么问题？



-------------------------------------------------------------------------------------
15寸液晶双子星,震天雷II--D451￥2466/D353￥2399 http://design.163.com/aocmonitor/index.html