不一致机器人发出ping命令，然后被卡住

Question

我从别人那里看到了这段代码，我想试一试，但它不能很好地工作了，当我的“我的世界”服务器离线时，它会改变频道，但当“我的世界”服务器重新上线时，它不会改变，而是会卡住。有人能帮我解决这个问题吗？机器人是用Python编写的。

问候ItsJeBoyGoogle

另外，对于我糟糕的英文._，我很抱歉。

import discord
import asyncio
import time
import socket
TOKEN = "token"

client = discord.Client()

@client.event

async def on_ready():
    print("Bot Connected")
    await client.wait_until_ready()
    channel = client.get_channel(id)            
    def ping(ip, port):
        try:
            s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
            s.connect((ip, int(port)))
            return True
        except:
            return False
    while True:
        online = ping("26.51.174.109", "25565")
        if online == True:
            print("server online")
            await channel.edit(name = "Server Status - Online")
        else:
            print("server offline")
            await channel.edit(name = "Server Status - Offline")
        await asyncio.sleep(5)
client.run( TOKEN )

Answer 1

一些服务器可能会阻塞套接字，因此最好设置超时。关闭套接字也可以。

通常情况下，最好显示异常以查看问题所在。

def ping(ip, port):
    try:
        s = socket.socket() # standard values are `socket.AF_INET, socket.SOCK_STREAM` so you don't have to write them
        s.settimeout(5)
        s.connect((ip, int(port)))
        s.close()
        return True
    except Exception as ex:
        print('[Exception]', ex)
        return False

我用于测试的代码

import discord
import asyncio
import time
import socket
import os

TOKEN = os.getenv('DISCORD_TOKEN')

client = discord.Client()

def ping(ip, port):
    try:
        s = socket.socket() # standard values are `socket.AF_INET, socket.SOCK_STREAM` so you don't have to write them
        s.settimeout(2)
        s.connect((ip, int(port)))
        s.close()
        return True
    except Exception as ex:
        print('[Exception]', ex)
        return False

@client.event
async def on_ready():
    print("Bot Connected")
    
    await client.wait_until_ready()
    #channel = client.get_channel(id)            
    
    while True:
        online = ping("26.51.174.109", "25565")
        #online = ping("192.168.1.101", "8081")
        if online:
            print("server online")
            #await channel.edit(name="Server Status - Online")
        else:
            print("server offline")
            #await channel.edit(name="Server Status - Offline")
        await asyncio.sleep(5)
        
client.run(TOKEN)

编辑：

我用nmap - nmap -Pn 26.51.174.109 -p 25565测试了端口，它显示端口被过滤了，所以我认为当它提供timeout时，你可以假设它是online，因为它不拒绝连接。

def ping(ip, port):
    try:
        s = socket.socket() # TCP - standard values are `socket.AF_INET, socket.SOCK_STREAM` so you don't have to write them
        s.settimeout(2)
        print('[DEBUG] connect')
        s.connect((ip, int(port)))
        #result = s.connect_ex((ip, int(port)))
        #print('result:', result)
        return True
    except socket.timeout as ex:
        print('[DEBUG] timeout')
        return True        
    except Exception as ex:
        print('[Exception]', ex)
        return False
    finally:
        print('[DEBUG] close')
        s.close()

编辑：

你必须创造价值

id = ...channel number...

因为有一个内置的函数id()，它可以使用这个函数作为频道号。

检查

print(id, type(id))

你应该看到

<built-in function id> <class 'builtin_function_or_method'>

Answer 2

我有个自动取款机

import asyncio
import time
import socket
import os

TOKEN = os.getenv('DISCORD_TOKEN')

id = 848949245557473350
client = discord.Client()

def ping(ip, port):
    try:
        s = socket.socket() # TCP - standard values are `socket.AF_INET, socket.SOCK_STREAM` so you don't have to write them
        s.settimeout(2)
        print('[DEBUG] connect')
        s.connect((ip, int(port)))
        #result = s.connect_ex((ip, int(port)))
        #print('result:', result)
        return True
    except socket.timeout as ex:
        print('[DEBUG] timeout')
        return True        
    except Exception as ex:
        print('[Exception]', ex)
        return False
    finally:
        print('[DEBUG] close')
        s.close()

@client.event
async def on_ready():
    print("Bot Connected")
    
    await client.wait_until_ready()
    channel = client.get_channel(id)
    print(id, type(id))
    
    while True:
        online = ping("frfr1.quackhost.uk", "20960")
        #online = ping("192.168.1.101", "8081")
        if online:
            print("server online")
            await channel.edit(name = "Server Status - ")
        else:
            print("server offline")
            await channel.edit(name = "Server Status - ")
        await asyncio.sleep(5)
        
client.run("XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX")