dataReceived()中的Twisted接收数据

时间:2013-02-20 19:33:01

标签: python twisted

我正在尝试使用Twisted框架编写服务器,并希望多次接收数据

class Echo(Protocol):
    def connectionMade(self):
        print " got connection from : " + str(self.transport.getPeer())

    def dataReceived(self, data):

        '''
        get the client ip
        '''
        if(len(data)>40):
            '''
            initial setup message from the client
            '''
            client_details = str(self.transport.getPeer())#stores the client IP as a string
            i = client_details.find('\'')#process the string to find the ip
            client_details = client_details[i+1:]
            j = client_details.find('\'')
            client_ip = client_details[:j]


            '''
            Extract the port information from the obtained text
            ''' 
            data = data.split('@')
            port1 = data[0]
            port2 = data[1]
            port3 = data[2]

       if int(data) == 1:
           method1(client_ip,port1)

       if int(data) == 2:
           method2(client_ip,port2)

我的问题:只有当来自客户端的消息中包含适当的整数数据时,才会调用method1和method2。有没有办法让我可以在客户端等待接收dataReceived()方法中的数据,或者我应该在dataReceived()方法本身中按顺序执行?

1 个答案:

答案 0 :(得分:3)

收到某些数据时会调用dataReceived方法。为了等待接收更多数据,您只需从dataReceived返回,以便可以再次调用它。

此外,TCP不是基于消息的,而是基于流的。您的dataReceived方法不能指望始终收到完整的消息,因此您的示例代码不正确。有关更多信息,请访问Twisted Matrix Labs网站上的See this frequently asked question