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本文介紹Python實現端口復用實例如下所示：

            
#coding=utf-8
import socket
import sys
import select
import threading
host='192.168.99.100'
port=80
class Thread(threading.Thread):
  def __init__(self,buf,sockfd):
    threading.Thread.__init__(self)
    self.buf=buf
    self.sockfd=sockfd
  def run(self):
   if len(self.buf)!=0:
    if 'GET' in self.buf :  #判斷是否是瀏覽器提交的數據如果是則將提交的數據轉發至本地環回地址的80端口
     s2=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
     s2.connect(('127.0.0.1',80))
     s2.send(self.buf)
     bufer=''
     while 1:
      recv_data=s2.recv(1024)
      bufer+=recv_data
      if len(recv_data)==0:
       break
     print bufer,len(bufer)
     if len(bufer)==0:
      pass     
     self.sockfd.send(bufer)  #將服務器發送的數據發回客戶端
     s2.close
     self.sockfd.close
     sys.exit()
    else:
     'ps:connect to ssh' #如果數據不是瀏覽器提交則將其轉發至本地的22端口
     s2=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
     s2.connect(('127.0.0.1',22))
     s2.send(self.buf)
     recv_data=s2.recv(4096)
     conn.send(recv_data)
     self.sockfd.close
     s2.close
s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
s.setsockopt( socket.SOL_SOCKET, socket.SO_REUSEADDR, 1 ) #端口復用的關鍵點
s.bind((host,port))
s.listen(10)
while 1:
 infds,outfds,errfds=select.select([s,],[],[],5) #使用select函數進行非阻塞操作
 if len(infds)!=0:
  conn,(addr,port)=s.accept()
  print 'connected by',addr,port
  data=conn.recv(1024)
  t=Thread(data,conn)
  t.start()
s.close
#coding=utf-8
import socket
import sys
import select
import threading
host='192.168.99.100'
port=80
class Thread(threading.Thread):
  def __init__(self,buf,sockfd):
    threading.Thread.__init__(self)
    self.buf=buf
    self.sockfd=sockfd
  def run(self):
   if len(self.buf)!=0:
    if 'GET' in self.buf :  #判斷是否是瀏覽器提交的數據如果是則將提交的數據轉發至本地環回地址的80端口
     s2=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
     s2.connect(('127.0.0.1',80))
     s2.send(self.buf)
     bufer=''
     while 1:
      recv_data=s2.recv(1024)
      bufer+=recv_data
      if len(recv_data)==0:
       break
     print bufer,len(bufer)
     if len(bufer)==0:
      pass     
     self.sockfd.send(bufer)  #將服務器發送的數據發回客戶端
     s2.close
     self.sockfd.close
     sys.exit()
    else:
     'ps:connect to ssh' #如果數據不是瀏覽器提交則將其轉發至本地的22端口
     s2=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
     s2.connect(('127.0.0.1',22))
     s2.send(self.buf)
     recv_data=s2.recv(4096)
     conn.send(recv_data)
     self.sockfd.close
     s2.close
s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
s.setsockopt( socket.SOL_SOCKET, socket.SO_REUSEADDR, 1 ) #端口復用的關鍵點
s.bind((host,port))
s.listen(10)
while 1:
 infds,outfds,errfds=select.select([s,],[],[],5) #使用select函數進行非阻塞操作
 if len(infds)!=0:
  conn,(addr,port)=s.accept()
  print 'connected by',addr,port
  data=conn.recv(1024)
  t=Thread(data,conn)
  t.start()
s.close

例子2

            
import socket
tcp1 = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
tcp2 = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
#在綁定前調用setsockopt讓套接字允許地址重用
tcp1.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
tcp2.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
 #接下來兩個套接字都也可以綁定到同一個端口上
tcp1.bind(('0.0.0.0', 12345))
tcp2.bind(('0.0.0.0', 12345))
import socket
tcp1 = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
tcp2 = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
#在綁定前調用setsockopt讓套接字允許地址重用
tcp1.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
tcp2.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
 #接下來兩個套接字都也可以綁定到同一個端口上
tcp1.bind(('0.0.0.0', 12345))
tcp2.bind(('0.0.0.0', 12345))

例子3

重定向

            
import socket,os
bufLen = 4*1024
sock1 = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
sock1.bind(('192.168.168.100', 8000)) 
sock1.listen(5) 
sock2 = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
sock2.connect(('192.168.168.100', 12345)) 
while True:
    connection,address = sock1.accept() 
    buf = connection.recv(bufLen) 
    #print buf      
    sock2.send(buf) 
    connection.send(sock2.recv(bufLen))
    connection.close()
import socket,os
bufLen = 4*1024
sock1 = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
sock1.bind(('192.168.168.100', 8000)) 
sock1.listen(5) 
sock2 = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
sock2.connect(('192.168.168.100', 12345)) 
while True:
    connection,address = sock1.accept() 
    buf = connection.recv(bufLen) 
    #print buf      
    sock2.send(buf) 
    connection.send(sock2.recv(bufLen))
    connection.close()

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Python實現端口復用實例代碼