python-Network Programming-03

First, we can look at the simplest interactive server and client programs.

Server

Import Socketdef Main ():    sock = Socket.socket (socket.af_inet,socket. SOCK_STREAM)    sock.bind ((' localhost ', 8000))    Sock.listen (5)    while True:        print ' 1 '        connection, CLENT_ADDR = Sock.accept () while        1:            buf = Connection.recv (1024x768)            connection.sendall (' Hi ')            print buf    connection.close () if __name__ = = ' __main__ ':    Main ()

[Server]: After creating the socket, the server will remain blocked, and once a user connects, immediately wait for the user to send the data, and then receive the user sent the data after understanding the return of a character, then the state becomes waiting for the next connection

Client

Import Socketsock = Socket.socket () sock.connect ((' localhost ', 8000)) Sock.settimeout (5) While 1:    res = SOCK.RECV ( 1024x768)    Print res    data = raw_input (' input: ')    sock.sendall (data) sock.close ()

[Client]: Go to the server side and send the data continuously, then accept the return.

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Then you can see that the server side of the above code can only accept a request at the same time, because there is only one thread to process the code

Then I can do it. The server-side code is replaced by

Import Socketserverclass MyServer (socketserver.baserequesthandler,object):    def handle (self):        conn = Self.request        Conn.sendall (' This was a tast ')        flag = True while        flag:            data = CONN.RECV (1024x768)            print " Data: ", data            if data = =" Exit ":                Flag = True            elif data = = ' 0 ':                conn.sendall (" The Winter in Comming ")            else:                conn.sendall ("Please input again") if __name__ = = "__main__":    Server01 = Socketserver.threadingtcpserver ((' 127.0.0.1 ', 8080), MyServer)    print "Server is running ..."    Server01.serve_forever ()

We write a multi-threaded server with the help of the socket's own class, and can send and receive messages

python-Network Programming-03