Python 2.7：侦听请求的连接+；同时侦听已建立的连接

我目前正在尝试制作聊天室服务器。我正试图做到这一点，这样我就可以同时监听新请求的连接和已建立的连接发送的消息

我可以用它来监听请求的连接：

def reqlisten():
    global hostlist
    while True:
        conn, address = (sock.accept)
        hostlist.append(conn)
        print 'Recieved connection form', address

def meslisten():
    global hostlist
    while True:
        ready_socks,_,_ = select.select(hostlist, [], [])
        for sock in ready_socks:
            data, addr = sock.recvfrom(255)
            print 'Received message:', data
            broadcast(message)
            print 'Broadcasting message.'

我可以用它来监听从已经建立的连接发送的消息：

def reqlisten():
    global hostlist
    while True:
        conn, address = (sock.accept)
        hostlist.append(conn)
        print 'Recieved connection form', address

def meslisten():
    global hostlist
    while True:
        ready_socks,_,_ = select.select(hostlist, [], [])
        for sock in ready_socks:
            data, addr = sock.recvfrom(255)
            print 'Received message:', data
            broadcast(message)
            print 'Broadcasting message.'

---

但是我如何同时做这两件事呢？

有多种方法可以做到这一点

一种简单的方法是，通过异步将套接字设置为非阻塞，一次接受一个连接，并在接受的套接字上接收固定数量的连接 下面是这样做的示例代码

hostlist = []
def Accept(sock):
    ##Accept one connection at a time                                                                                                                                                                                                        
    conn,address = sock.accept()
    print "accept",address
    conn.setblocking(0)
    hostlist.append(conn)

def Recv(sock):

    data,addr = sock.recvfrom(255)
    print "recv",data

if __name__ == "__main__":
    listen_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    listen_socket.bind((socket.gethostname(),4041))
    listen_socket.setblocking(0)
    listen_socket.listen(5)
    hostlist.append(listen_socket)
    while True:
        ready_socks,_,_ = select.select(hostlist, [], [])
        for sock in ready_socks:
            if sock == listen_socket:
                Accept(sock)
            else:
                Recv(sock)

---

您可能需要为非阻塞套接字添加一些异常处理eWoldBlock错误条件