python-Unix套接字

 #!/usr/bin/python
  #coding=utf-8
 #server
 import socket
 import sys
 import os

 server_address = './test'

 #首先确保这个文件不能存在，只是用于本地套接字的通信，如果已经存在则不可以了
 try:
     os.unlink(server_address)  # 用于删除一个文件
 except OSError:
     if os.path.exists(server_address):
         raise

 sock = socket.socket(socket.AF_UNIX,socket.SOCK_STREAM)

 print >>sys.stderr,'starting up on %s'%server_address
 sock.bind(server_address)
 sock.listen(5)

 while True:
     print >>sys.stderr,'waiting for a connection'
     connection,client_address = sock.accept()
     try:
         print >>sys.stderr,'connection from',client_address
         while True:
             data = connection.recv(16)
             print >>sys.stderr,'received "%s"'%data
             if data:
                 print >>sys.stderr,'sending data back to the client'
                 connection.sendall(data)
             else:
                 print >>sys.stderr,'no data from',client_address
                 break
     finally:
         connection.close()

 #!/usr/bin/python
  #coding=utf-8
 #client
 import socket
 import sys

 sock = socket.socket(socket.AF_UNIX,socket.SOCK_STREAM)
 server_address = './test'  #本地套接字通讯是设置的不是IP而是一个文件

 print >>sys.stderr,'connection to %s'%server_address

 try:
     sock.connect(server_address)
 except socket.error,msg:
     print >>sys.stderr,msg
     sys.exit(1)

 try:
     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()