Implementation of the chat room application of Python socket C/S structure

PythonThe chat room application of the socket C/s structure

Service side:

#!/usr/bin/env Python#coding:utf8 Import socket,selectdef broadcast_data (sock,message): For sockets in Conn_list:if sock ET = server_socket and Socket! = Sock:try:socket.send (message) Except:socket.close () Conn_list.remove ( SOCKET) If __name__ = = "__main__": Conn_list = [] Recv_buffer = 4096 PORT = 9999 Server_socket = Socket.socket (socket.af_ INET, Socket. SOCK_STREAM) server_socket.setsockopt (socket. Sol_socket, SOCKET.  SO_REUSEADDR, 1) #端口重用, optional Server_socket.bind ((", PORT) Server_socket.listen conn_list.append (Server_socket) Print "Chat server started on port" + STR (port) while 1:read_sockets,write_sockets,error_sockets = Select.select (conn_ List,[],[]) for sock in Read_sockets: #新建连接 if sock = = server_socket:sockfd, addr = server_socket.accept () con N_list.append (SOCKFD) print "Client (%s,%s) connected"% addr Broadcast_data (SOCKFD, "[%s:%s] entered room\n"% add r) #进入聊天室 Else:try:data = SOCK.RECV (recv_buffer) if data:     Broadcast_data (sock, "\ r" + ' < ' + str (sock.getpeername ()) + ' > ' + Data ' except:broadcast_data (sock, "C Lient (%s,%s) is offline "% addr) ' print ' Client (%s,%s) is offline"% addr Sock.close () Conn_list.remove (Soc K) Continue Server_socket.close ()

Client:

#!/usr/bin/env Python#coding:utf8import Socket,select,string,sys def prompt (): Sys.stdout.write ("
 
  
   
   ) Sys.stdout.flush () if __name__ = = "__main__":  if (len (SYS.ARGV) < 3):  print ' Usage:python chat_client.py host Name Port '  sys.exit ()  HOST = sys.argv[1] Port = Int (sys.argv[2])  s = socket.socket (socket.af_inet, socket. SOCK_STREAM) S.settimeout (2)  try:  s.connect ((HOST, PORT)) except:  print ' Unable to connect '  Sys.exit ()  print ' Connected to remote host. Start sending messages ' prompt () while  1:  socket_list = [Sys.stdin, S]   read_sockets, Write_sockets, Error_sockets = Select.select (Socket_list, [], []) for   sock in Read_sockets:   if sock = = s:    data = Sock.rec V (4096)    if not data:     print ' \ndisconnected from chat server '     sys.exit ()    Else:     Sys.stdout.write (data)     prompt ()    else:    msg = Sys.stdin.readline ()    s.send (msg)    prompt ()
 
  

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