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()