本文實例講述了Python實現基于TCP UDP協議的IPv4 IPv6模式客戶端和服務端功能。分享給大家供大家參考，具體如下：

由于目前工作的需要，需要在IPv4和IPv6兩種網絡模式下TCP和UDP的連接，要做到客戶端發包，服務端收包。

前幾天寫了代碼，但是把UDP的客戶端和服務端使用TCP模式的代碼了。今天在公司使用該工具的時候，發現了問題，忘記了UDP不需要驗證。疏忽，疏忽。不過剛剛接觸編程，可以原諒。

現在在家，已經把代碼改好了。經測試可以使用。

先運行客戶端：

python MiniClient.py host port mode(t4, t6, u4, u6)

再運行服務端：

python MiniServer.py host port mode(t4, t6, u4, u6)

客戶端代碼如下：

import socket, sysimport timeclass MiniClient:  h = ''  p = ''  m = ''  def __init__(self, host, port, mode):    self.h = host    self.p = int(port)    self.m = mode  def tcpC4(self):    tcpT4Client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)    print "Done........"    tcpT4Client.connect((self.h, self.p))    print "TCP IPv4 TCP mode connecting..."    while True:      time.sleep(1)      tcpT4Client.send('hello')      print "hello send to Server"  def udpC4(self):    udpT4Client = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)    print "UDP TCP IPv4 Mode connecting..."    while True:      time.sleep(1)      udpT4Client.sendto("hello", (self.h, self.p))      print "Hello Send to " , self.h , ' Use ', self.p, 'Port'  def tcpC6(self):    tcpT4Client = socket.socket(socket.AF_INET6, socket.SOCK_STREAM)    print "Done........"    tcpT4Client.connect((self.h, self.p))    print "TCP IPv6 TCP mode connecting..."    while True:      time.sleep(1)      tcpT4Client.send('hello')      print "hello send to Server"  def udpC6(self):    udpU6Client = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM)    print "UDP TCP IPv4 Mode connecting..."    while True:      time.sleep(1)      udpU6Client.sendto("hello", (self.h, self.p))      print "Hello Send to " , self.h , ' Use ', self.p, 'Port'if __name__ == "__main__":  x = MiniClient(sys.argv[1], sys.argv[2], sys.argv[3])  if x.m == 't4':    x.tcpC4()  elif x.m == 't6':    x.tcpC6()  elif x.m == 'u4':    x.udpC4()  else:    x.udpC6()

服務端代碼：

import socket, sysclass MiniServer:  h = ''  p = ''  m = ''  def __init__(self, host, port, mode):    self.h = host    self.p = int(port)    self.m = mode  def serverT4(self):    tcpT4Server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)    print "Server Socket Created......."    tcpT4Server.bind((self.h, self.p))    print "Wating for connecting......."    tcpT4Server.listen(5)    while True:      clientSock, clientaddr = tcpT4Server.accept()      print "Connected from: ", clientSock.getpeername()      clientSock.send('Congratulations........')      while True:        buf = clientSock.recv(1024)        print buf      #clientSock.close()  def udpT4(self):    udpT4Server = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)    print "UDP TCP IPv4 Mode Start....."    udpT4Server.bind((self.h, self.p))    print "UDP Server Start"    while True:      udpT4Data, udpT4ServerInfo = udpT4Server.recvfrom(1024)      print "Receive from ", udpT4ServerInfo, " and The Data send from The Client is :", udpT4Data  def serverT6(self):    tcpT6Server = socket.socket(socket.AF_INET6, socket.SOCK_STREAM)    print "Server Socket Created......."    tcpT6Server.bind((self.h, self.p))    print "Wating for connecting......."    tcpT6Server.listen(5)    while True:      clientSock, clientaddr = tcpT6Server.accept()      print "Connected from: ", clientSock.getpeername()      clientSock.send('Congratulations........')      #clientSock.close()  def udpT6(self):    udpT6Server = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)    print "UDP TCP IPv4 Mode Start....."    udpT6Server.bind((self.h, self.p))    print "UDP Server Start"    while True:      udpT4Data, udpT6ServerInfo = udpT6Server.recvfrom(1024)      print "Receive from ", udpT6ServerInfo, " and The Data send from The Client is :", udpT4Dataif __name__ == "__main__":  x = MiniServer(sys.argv[1], sys.argv[2], sys.argv[3])  if x.m == 't4':    x.serverT4()  elif x.m == 't6':    x.serverT6()  elif x.m == 'u4':    x.udpT4()  else:    x.udpT6()