在测试中发现，如果发送端一次性发送大量的数据，然后关闭session,接收端来不及处理，就会发出TCP ZeroWindow报文

Recv 脚本：

# -*- coding:utf-8 -*-'''创建服务器端程序，用来接收客户端传进的数据'''from socket import *from time import ctimeimport timeimport ConfigParserdef server():    HOST = '172.21.35.81'    PORT = 10522    ADDR = (HOST,PORT)    server_socket = socket(AF_INET,SOCK_STREAM)    server_socket.bind(ADDR)    server_socket.listen(5)    '''Config information'''    cfg = ConfigParser.ConfigParser()    cfg.read("Config.ini")    src = cfg.get("FILE", "RECV_FILE")    while True:        print 'Waiting for connecting ......'        tcpclientsocket,addr = server_socket.accept()        print 'Connected by ',addr        recvfile = open(src, 'wb')        while True:            data = tcpclientsocket.recv(1)            if not data:                break            else:                recvfile.write(data)            #print data                 time.sleep(5)        recvfile.close()        print 'Received Data Success\n'        tcpclientsocket.close()    server_socket.close()server()

Send 脚本：

# -*- coding:utf-8 -*-'''创建客户端程序，向服务器传递数据'''from socket import *import sysimport osimport ConfigParserfrom subprocess import *'''Config information'''cfg = ConfigParser.ConfigParser()cfg.read("Config.ini")src = cfg.get("FILE", "SEND_FILE")#def client():HOST = '127.0.0.1'PORT = 10521length = os.path.getsize(src)f1 = open(src, 'rb')countent = f1.read()f1.close()    clientsocket = socket(AF_INET,SOCK_STREAM)clientsocket.connect((HOST, PORT))clientsocket.send(countent)clientsocket.close()print 'Send Data OK'

测试配置文件，需要在当前目录放一个比较大的文件作为发送数据：（configure.ini）

[FILE]SEND_FILE = welcome.wavRECV_FILE = save_welcome.wav