Question

我从git hub上的txtnettools包中提取了以下代码，代码很大程度上是不完整的所以我试图弄清楚如何实际让代码发送我需要调用的数据包我认为sendEcho（）方法作为反应器所以我添加了相应的行。

from random import randint
import socket
import struct

from twisted.internet.protocol import DatagramProtocol

# needs to be run with sudo, so let's add the dev path
import sys
sys.path.insert(0, ".")

from txnet.icmp import *
from txnet.reactor import reactor


UDP_PORT_MIN = 33434
UDP_PORT_MAX = 33534


def get_remote_port():
    return randint(UDP_PORT_MIN, UDP_PORT_MAX)


class Pinger(ICMP):

      def sendEcho(self):
          print "Sending echo ..."
          src = "192.168.1.1"
          print src
          #dst = "127.0.0.1"
          #dst = "192.168.1.1"
          #dst = "192.168.100.1"
          dst = "74.125.45.100"
          self.transport.connect(dst, get_remote_port())
          # Construct a ping packet (with useless payload data).
          packet = Packet(src=src, dst=dst, type=ECHO_REQUEST, payload="txNetTools ping")
          raw = packet.getDatagram()
          self.transport.write(packet.getDatagram())

     def startProtocol(self):
         print "Transport is:", self.transport
         print "Transport class is:", self.transport.__class__
         print "self is:", self
         self.sendEcho()

     def connectionRefused(self):
         print "Connection refused ..."
         print "Host:", self.transport.getHost()
         print "Remote host:", self.transport._connectedAddr
         print "Connected:", self.transport.connected
         print "Disconnected:", self.transport.disconnected
         print "Data buffer:", self.transport.dataBuffer

 reactor.Pinger.sendEcho() #Throwing error 
 reactor.listenICMP(0, Pinger())
 reactor.run()

Rector.pinger.sendEcho（）然而，当我运行此脚本时，我收到以下错误。

 Traceback (most recent call last):
   File "ping.py", line 54, in <module>
   reactor.Pinger.sendEcho()
 AttributeError: 'ExtendedSelectReactor' object has no attribute 'Pinger'

谷歌搜索“ExtendedSelectRector错误”或任何关闭yeilds字面上没有解决方案或喋喋不休。感谢

编辑：这是源项目github https://github.com/oberstet/txnettools

Answer 1

答案完全在于我如何访问Pinger课程。更正后的代码行是

 reactor.callWhenRunning(Pinger().sendEcho)

而不是：

 reactor.Pinger.sendEcho()

您需要在反应器中指定在创建新物品时何时以及如何推迟自己。

扭曲的ExtendSelected Reactor错误

1 个答案: