Question

我有一个在Twisted中实现的基本服务器和客户端。我的目标是让客户端处理一些数据，将其进度报告给服务器，然后重复进行，直到处理完所有数据为止。客户端能够向服务器发送初始消息，但是客户端没有收到服务器的响应，让它知道可以开始处理该数据了。这是我的代码。

服务器：

from twisted.internet import reactor, protocol

PORT = 9000

progress = 0

class MyServer(protocol.Protocol):

    def dataReceived(self, data):
        global progress
        print(data)
        if data != "Ready?":
            progress = int(data)
        self.transport.write("Got it.")
        self.transport.loseConnection()

    def connectionLost(self, reason):
        global progress
        if progress == 10:
            print("Completed.")
            reactor.stop()

class MyServerFactory(protocol.Factory):
    protocol = MyServer

factory = MyServerFactory()
reactor.listenTCP(PORT, factory)
reactor.run()

客户：

from twisted.internet import reactor, protocol
import time

HOST = 'localhost'
PORT = 9000

progress = 0

class MyClient(protocol.Protocol):

    def connectionMade(self):
        self.transport.write("Ready?")
        self.transport.loseConnection()

    def dataReceived(self, data):
        global progress
        progress += 1
        print(progress)
        self.transport.write(str(progress))
        self.loseConnection()

    def connectionLost(self, reason):
        global progress
        if progress == 10:
            print("Completed.")
            reactor.stop()

class MyClientFactory(protocol.ClientFactory):
    protocol = MyClient

factory = MyClientFactory()
reactor.connectTCP(HOST, PORT, factory)

reactor.run()

Answer 1

我发现我的问题是我过早关闭了连接。在一些较早的测试中，我试图在dataReceived函数中发送多个消息，这些消息被串联为一条消息。这使我相信，要通过每条消息，您都必须断开连接。相反，您只需要在发送另一条消息之前让函数完成即可。这是按预期工作的更新代码。

服务器：

from twisted.internet import reactor, protocol

PORT = 9000

progress = 0

class MyServer(protocol.Protocol):

    def dataReceived(self, data):
        global progress
        print(data)
        if data != "Ready?":
            progress = int(data)
        self.transport.write("Got it")
        if progress == 10:
            self.transport.loseConnection()

    def connectionLost(self, reason):
        print("Completed.")
        reactor.stop()

class MyServerFactory(protocol.Factory):
    protocol = MyServer

factory = MyServerFactory()
reactor.listenTCP(PORT, factory)
reactor.run()

客户：

from twisted.internet import reactor, protocol
import time

HOST = 'localhost'
PORT = 9000

progress = 0

class MyClient(protocol.Protocol):

    def connectionMade(self):
        self.transport.write("Ready?")

    def dataReceived(self, data):
        global progress
        progress += 1
        print(progress)
        self.transport.write(str(progress))
        if progress == 10:
            self.transport.loseConnection()

    def connectionLost(self, reason):
        print("Completed.")
        reactor.stop()

class MyClientFactory(protocol.ClientFactory):
    protocol = MyClient

factory = MyClientFactory()
reactor.connectTCP(HOST, PORT, factory)

reactor.run()

Twisted服务器/客户端之间的多个呼叫/响应消息

1 个答案: