针对长数据的Python Twisted

Python编码器

我正在使用twisted构建一个服务器，它在每个连接上接收3000字节的数据，我的问题是包被截断并存储在数据库中，就像在包块上一样，我正在寻找的是一种解决这种数据包的方法，这种数据包必须作为一个长数据进行解析

接收到的行不是一种方式，因为这种数据是用分隔符发送的，所以我考虑使用循环方式，但我不完全确定它或如何实现

from twisted.internet.protocol import Factory, Protocol
from twisted.internet import reactor
import binascii
from Datagram import *

class LingServer(Protocol):


    def __init__(self):
        print 'Staring Ling Server'
        pass

    def connectionMade(self):
        try:
            print 'Accepted connection'
        except ValueError:
            print "Oops!  Connection was not started"

    def connectionLost(self, reason):
        print "Connection lost ", reason  

    def dataReceived(self, data):
        try:
            print "Data received ", data
            data = binascii.hexlify(data)
            Datagram (header=data[:10], content=data[10:])
            session.commit()

            #self.transport.write(self.decoder.processDatagram(data))
        except ValueError:
            print "Oops!  That was no valid data.  Try again..."


class LingFactory(Factory):  

    def __init__(self):
        pass

    def buildProtocol(self, addr):
        return LingServer()

reactor.listenTCP(12345, LingFactory())
reactor.run()

---

TCP是面向流的。看

如果要在处理前缓冲3000字节，请参阅

twisted.protocols.stateful.StatefulProtocol

。例如：

class LingServer(StatefulProtocol):
    def getInitialState(self):
        return self.ling, 3000

    def ling(self, data):
        # Process here, len(data) == 3000