my public ip

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服务端

远程vps
开启端口

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iptables -I INPUT -p udp --dport 1234 -j ACCEPT
iptables -I INPUT -p tcp --dport 1234 -j ACCEPT

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# !/usr/bin/env python3
# coding=utf-8

import sys
import socket

server = socket.socket(socket.AF_INET,socket.SOCK_STREAM)

host='45.77.244.133'
port=1234

server.bind((host,port))
print("start at %s:%s" % (host, port))

## 设置最大连接数,超过后排队
server.listen(5)

while True:
    s, addr = server.accept()
    d = s.recv(1024)
    print("connected from: %s, msg: %s" % (addr[0], d.decode('utf-8')))

    s.send(addr[0].encode("utf-8"))
    s.close()

运行

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python3 ./server.py  > server.log 2>&1 &

客户端

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#!/usr/bin/env python
# encoding: utf-8

"""


    @author: mails100@163.com
    @time: 2017/12/27 15:06
"""

import socket

ip = '45.77.244.133'
port = 1234

with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
    s.connect((ip, port))
    s.send('[rb-ip]'.encode('utf-8'))

    d = s.recv(1024)
    if d:
        print("my public ip:", d.decode('utf-8'))

配置cron定时任务

  1. vi ~/.profile, 添加EDITOR=vi; export EDITOR

  2. 创建root_cron文件

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    # get current public ip by requesting vps
    */1 * * * * python3 /home/pi/myIP.py >> /home/pi/ip.log 2>&1

  3. crontab root_cron

  4. 调整任务crontab -e, 删除任务crontab -r, 查看crontab -l