油猴 websocket 实现通讯

以百度为例

• 油猴

// ==UserScript==
// @name         ws
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://www.baidu.com/*
// @icon         data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant        none
// @run-at       document-start
// ==/UserScript==

(function() {
    window.ws = new WebSocket('ws://127.0.0.1:8765/');
    ws.onopen = function(){
        console.log("连接服务器成功");
        ws.send("Browser start");
    };
    ws.onclose = function(){
        console.log("服务器关闭");
    };
    ws.onerror = function(){
        console.log("连接出错");
    };
    ws.onmessage = function(evt){
        console.log(evt.data)
        console.log(document.cookie);
    }
})();

• python

import asyncio
import websockets

# 把接受的消息打印后返回回去
async def recv_msg(websocket):
    while True:
        recv_text = await websocket.recv()
        print(recv_text)
        await websocket.send(recv_text)

async def main(websocket, path):
    await recv_msg(websocket)
try:
    start_server = websockets.serve(main, '127.0.0.1', 8765)
    asyncio.get_event_loop().run_until_complete(start_server)
    asyncio.get_event_loop().run_forever()
except:
    pass

此时先在控制台输入ws.send(document.cookie) 就可以获得baidu的Cookie值