python自定义websocket包headers请求头

有一种反爬手段“检测headers请求头中字段的排序”，websocket方式发请求也不例外。

python实现websocket连接，可以使用py包websocket-client

安装

pip install websocket-client

使用

import websocket


def on_message(ws, message):
    print(ws)
    print(message)


def on_error(ws, error):
    print(ws)
    print(error)


def on_close(ws):
    print(ws)
    print("### closed ###")


websocket.enableTrace(True)
ws = websocket.WebSocketApp("ws://127.0.0.1:8888/track",
                            on_message=on_message,
                            on_error=on_error,
                            on_close=on_close)

ws.run_forever()

请求测试默认会添加请求头

如何修改并固定排序规则，重写get_handshake_headers函数

from websocket import _handshake


def get_handshake_headers(resource, url, host, port, options):
    headers = [GET /api/challenge64 HTTP/1.1, Host: www.python-spider.com, Connection: Upgrade,
               Pragma: no-cache, Cache-Control: no-cache,
               User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko)
                Chrome/113.0.0.0 Safari/537.36,
               Upgrade: websocket, Origin: https://www.python-spider.com, Sec-WebSocket-Version: 13,
               Accept-Encoding: gzip, deflate, br, Accept-Language: zh-CN,zh;q=0.9,en;q=0.8,
               Cookie: sessionid=sm85gembpmofo5mhzustgiwgcwkgk5dm;, Sec-WebSocket-Key: y1H/4iwgf/4st9XYL0j+mg==,
               Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits, , ]
    key = y1H/4iwgf/4st9XYL0j+mg==
    return headers, key

_handshake._get_handshake_headers = get_handshake_headers

测试

大功告成！