Question

我正在尝试在python中创建一个多客户端https服务器。为了获得端口80和443中的连接，我使用select两次。由于某些原因，当我第二次使用select时程序被卡住（我通过在选择之前和之后的行上打印一些东西来检查）。在main方法中，我创建了一个ConnectionHandler对象，并在循环中使用handle_connections。以下是ConnectionHandler的重要部分（我在handle_connections中使用select）。另外，因为我还在编写程序的其余部分，所以我现在还没有真正使用https连接，所以请忽略那些＆＃34;错误＆＃34;。如何让它工作？

class ConnectionHandler:
    def __init__(self):
        self.open_http_sockets = []
        self.open_https_sockets = []
        self.settings = MemoryHandler.get_server_settings()
        self.http_socket = socket.socket()
        self.http_socket.bind((self.settings['http_ip'], int(self.settings['http_port'])))
        self.http_socket.listen(10)
        self.https_socket = socket.socket()
        self.https_socket.bind((self.settings['https_ip'], int(self.settings['https_port'])))
        self.https_socket.listen(10)


    def handle_connections(self):
        rlist, wlist, xlist = select.select([self.http_socket] + self.open_http_sockets, [], [])
        for socket in rlist:
            if socket is self.http_socket:
                # handle the server http socket
                client, address = socket.accept()
                print 'new connection ' + address[0]
                self.open_http_sockets.append(client)
            else:
                # handle all other http sockets
                self.http_communication(socket)
        #the problem is here
        rlist, wlist, xlist = select.select([self.https_socket] + self.open_https_sockets, [], [])
        for socket in rlist:
            if socket is self.https_socket:
                # handle the server https socket
                client, address = socket.accept()
                self.open_https_sockets.append(client)
            else:
                # handle all other https sockets
                self.https_communication(socket)

Answer 1

通常，select被放入一个循环中。 select阻止程序直到事件发生。因此，如果第一个循环成功，那么第二个循环将开始，但不会参加正常的http连接。

我建议您进行一次选择，并在if中包含http和https个连接。

类似的东西：

for socket in rlist:
    if socket is self.http_socket:
        client, address = socket.accept()
        print 'new connection ' + address[0]
        self.open_http_sockets.append(client)
    elif socket is self.https_socket:
        # handle the server https socket
        client, address = socket.accept()
        self.open_https_sockets.append(client)
    else:
        # handle all other sockets
        self.http_communication(socket)

python select方法卡住了

1 个答案: