Question

我有一个可以与多个客户端保持连接的服务器程序。我希望能够关闭套接字以响应客户端的CLOSE消息，或者出于其他原因。问题是服务器停留在accept（）方法上，并不关心我是否在其他地方关闭套接字。

我可以在主服务器中使用一些标志，然后在此之后关闭套接字，但这意味着我必须在客户端请求后自己连接到服务器，以便检查while条件，闻起来真的很糟糕。

代码：

import socket
import sys
from thread import *

HOST = ''   # Symbolic name meaning all available interfaces
PORT = 9992 # Arbitrary non-privileged port


s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print 'Socket created'

#Bind socket to local host and port
try:
    s.bind((HOST, PORT))
except socket.error , msg:
    print 'Bind failed. Error Code : ' + str(msg[0]) + ' Message ' + msg[1]
    sys.exit()

print 'Socket bind complete'

#Start listening on socket
s.listen(10)
print 'Socket now listening'

#Function for handling connections. This will be used to create threads
def clientthread(conn):
    #Sending message to connected client
    conn.send('Welcome to the server. Type something and hit enter\r\n') #send only takes string
    data=''
    #infinite loop so that function do not terminate and thread do not end.
    while True:

        #Receiving from client
        data += conn.recv(1024)
        print data
        if data == 'CLOSE':
            global s
            conn.sendall('You have requested to destroy the connection...')
            conn.close()
            s.close()
            return
        if data.find('\n') != -1:
            conn.sendall('OK...' + data + '\r\n')
            data=''






#now keep talking with the client
while 1:
    #wait to accept a connection - blocking call
    try:
        conn, addr = s.accept()
        print 'Connected with ' + addr[0] + ':' + str(addr[1])

        #start new thread takes 1st argument as a function name to be run, second is the tuple of arguments to the function.
        start_new_thread(clientthread ,(conn,))
    except:
        print 'socket issue sorry'
        break

哪里是关闭服务器套接字的正确位置（Python）

0 个答案: