Python编码器
我正在使用twisted来构建一个服务器,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,就像在包件上一样,我正在寻找,是一种方法解决这种必须被解析为一个长数据的数据包。
收到的行不是一种方式,因为这种数据是用分隔符发送的,那么我正在考虑循环方式,但是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()
答案 0 :(得分:1)
TCP是面向流的。请参阅the FAQ entry for this topic。
如果要在处理前缓冲3000个字节,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