Python 写的TCP Server端口转发，可用于协议分析

#tcp server
import socket

host = '127.0.0.1'          #Local Server IP
host2 = '127.0.0.1'   #Real Server IP
port = 6001 #Local Server Port
port2 = 7001 #Real Server Port

def ProcData(data):
return data
#add more code....

print "Map Server start from " + host + ":" + str(port) +" to " + host2 + ":" + str(port2) +"\r\n"

server = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
server.bind(('127.0.0.1',port))
print "127.0.0.1 Server start at "+ str(port) +"\r\n"

client = socket.socket( socket.AF_INET, socket.SOCK_STREAM )
client.connect((host2,port2))
print host +" Client connect to " + host2 + ":"+str(port2)+"\n"

server.listen(5)
ss, addr = server.accept()
print 'got connected from',addr

while 1:
msg = ss.recv(20480)
print "Get:"+repr(msg)+"\r\n"

client.send(msg)
#print "Client send data %s to "%repr(msg)
buf=client.recv(20480)

#print "Client recv data %s from "%repr(buf)
ss.send(buf)
print "Send:"+repr(buf)+"\r\n"