Python socket C/S结构的聊天室应用实现

Python socket C/S结构的聊天室应用

服务端：

#!/usr/bin/env python
#coding:utf8
 
import socket,select
def broadcast_data (sock,message):
 for socket in conn_list:
  if socket != 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,可选
 server_socket.bind(('', PORT))
 server_socket.listen(99)
 
 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()
    conn_list.append(sockfd)
    print "Client (%s, %s) connected" % addr
    broadcast_data(sockfd, "[%s:%s] entered room\n" % addr)
   #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, "Client (%s, %s) is offline" % addr)
     print "Client (%s, %s) is offline" % addr
     sock.close()
     conn_list.remove(sock)
     continue
 
 server_socket.close()

客户端：

#!/usr/bin/env python
#coding:utf8
import socket,select,string,sys
 
def prompt() :
 sys.stdout.write('<You> ')
 sys.stdout.flush()
 
if __name__ == "__main__":
 
 if(len(sys.argv) < 3) :
  print 'Usage : python chat_client.py hostname 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.recv(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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