python : Check if IRC connection is lost (PING PONG? )

Question

所以我的问题是，如果有 PING，我如何让我的机器人收听，如果在一分钟的时间间隔内没有 ping，它会使用react，就好像连接已经丢失一样。怎么做到这一点？

编辑:

这是注册连接失败的工作代码(尽管在重新连接时遇到问题):

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import sys
import socket
import string
import os
import platform
import time

# Variables
HOST = "irc.channel.net"
PORT = 6667
NICK = "Botname"
IDENT = "Botname"
REALNAME = os.getenv('USER')
CHAN = "##ChannelName"
readbuffer = ""

# Our IRC connection
irc = socket.socket()
irc.settimeout(300)
connected = False
def connection(host, port, nick, ident, realname, chan):
    while connected is False:
        try:
            irc.connect((host, port))
            irc.send("NICK %s\r\n" % nick)
            irc.send("USER %s %s bla :%s\r\n" % (ident, host, realname))
            irc.send("JOIN :%s\r\n" % chan)
            # Initial msg to send when bot connects
            irc.send("PRIVMSG %s :%s\r\n" % (chan, "TehBot: "+ nick + " Realname: " + realname + " ."))
            global connected
            connected = True
        except socket.error:
            print "Attempting to connect..."
            time.sleep(5)
            continue
connection(HOST, PORT, NICK, IDENT, REALNAME, CHAN)

while connected:
    try:
        data = irc.recv ( 4096 )
        # If connection is lost
        if len(data) == 0:
            break
        print data
        # If Nick is in use
        if data.find ( "Nickname is already in use" ) != -1:
            NICK = NICK + str(time.time())
            connection(HOST, PORT, NICK, IDENT, REALNAME, CHAN)
        # Ping Pong so we don't get disconnected
        if data[0:4] == "PING":
            irc.send ( "PONG " + data.split() [ 1 ] + "\r\n" )
    except socket.timeout:
        global connected
        connected = False
        print connected
        break
print "Out of loop"
connection(HOST, PORT, NICK, IDENT, REALNAME, CHAN)

Answer 1

last_ping = time.time()
threshold = 5 * 60 # five minutes, make this whatever you want
while connected:
    data = irc.recv ( 4096 )
    # If Nick is in use
    if data.find ( 'Nickname is already in use' ) != -1:
        NICK = NICK + str(time.time())
        Connection()
    # Ping Pong so we don't get disconnected
    if data.find ( 'PING' ) != -1:
        irc.send ( 'PONG ' + data.split() [ 1 ] + '\r\n' )
        last_ping = time.time()
    if (time.time() - last_ping) > threshold:
        break

这将在每次收到 ping 时记录时间，如果没有 ping 的时间太长，则跳出 connected 循环。您不需要 while connected == True:，只需 while connected: 做同样的事情。

此外，请考虑使用 connection 而不是 Connection，这是 Python 约定，仅对类使用大写名称。