Question

我的Python安全websocket客户端代码给出了如下异常：

[SSL：CERTIFICATE_VERIFY_FAILED]证书验证失败（_ssl.c：748）

我已创建了我的私有证书并签署了证书，但我无法使用Python脚本连接到它，如下所示：

import json
from websocket import create_connection


class subscriber:
   def listenForever(self):
   try:
      # ws = create_connection("wss://localhost:9080/websocket")
      ws = create_connection("wss://nbtstaging.westeurope.cloudapp.azure.com:9090/websocket")
      ws.send("test message")
      while True:
          result = ws.recv()
          result = json.loads(result)
          print("Received '%s'" % result)

      ws.close()
  except Exception as ex:
      print("exception: ", format(ex))


try:
    subscriber().listenForever()
except:
    print("Exception occured: ")

我的https / wss服务器脚本在python中有龙卷风，如下所示：

import tornado.web
import tornado.websocket
import tornado.httpserver
import tornado.ioloop
import os
import ssl

ssl_root = os.path.join(os.path.dirname(__file__), 'ssl1_1020')


class WebSocketHandler(tornado.websocket.WebSocketHandler):
    def check_origin(self, origin):
        return True

    def open(self):
        pass

    def on_message(self, message):
        self.write_message("Your message was: " + message)
        print("message received: ", format(message))

    def on_close(self):
        pass


class IndexPageHandler(tornado.web.RequestHandler):
    def get(self):
        self.render("index.html")


class Application(tornado.web.Application):
    def __init__(self):
        handlers = [
           (r'/', IndexPageHandler),
           (r'/websocket', WebSocketHandler),
        ]

        settings = {
            'template_path': 'templates'
        }
        tornado.web.Application.__init__(self, handlers, **settings)


ssl_ctx = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH)
ssl_ctx.load_cert_chain(ssl_root+"/server.crt",
                    ssl_root + "/server.pem")


if __name__ == '__main__':
    ws_app = Application()
    server = tornado.httpserver.HTTPServer(ws_app, ssl_options=ssl_ctx,)
    server.listen(9081, "0.0.0.0")
    print("server started...")
    tornado.ioloop.IOLoop.instance().start()

用于创建SSL签名证书的步骤：

openssl genrsa -des3 -out server.key 1024
openssl rsa -in server.key -out server.pem
openssl req -new -nodes -key server.pem -out server.csr
openssl x509 -req -days 365 -in server.csr -signkey server.pem -out server.crt

Answer 1

最后我找到了解决方案，我更新了python客户端脚本，同时连接到安全的Web套接字url，忽略了cert请求，如下所示：

 ws = websocket.WebSocket(sslopt={"cert_reqs": ssl.CERT_NONE})
      ws.connect("wss://xxx.com:9090/websocket")

Answer 2

如果有人好奇将来为什么wss python服务器失败是因为龙卷风文档中的这个：

当使用带有自签名证书的安全websocket连接（wss：//）时，来自浏览器的连接可能会失败，因为它希望显示“接受此证书”对话框但无处可见。在websocket连接成功之前，您必须先使用相同的证书访问常规HTML页面才能接受它。

Answer 3

对我来说，忽略错误不是一种选择，我必须使用我的自签名证书：

import asyncio
import pathlib
import ssl
import websockets

ssl_context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
localhost_pem = pathlib.Path(__file__).with_name("localhost.pem")
ssl_context.load_verify_locations(localhost_pem)

async def hello():
    uri = "wss://localhost:8765"
    async with websockets.connect(
        uri, ssl=ssl_context
    ) as websocket:
        name = input("What's your name? ")

        await websocket.send(name)
        print(f"> {name}")

        greeting = await websocket.recv()
        print(f"< {greeting}")

asyncio.get_event_loop().run_until_complete(hello())

here在websocket存储库的examples文件夹中找到。

PS

我将其从SSLContext(ssl.PROTOCOL_TLS_CLIENT)更改为SSLContext(ssl.PROTOCOL_TLSv1_2)以使其正常工作

Answer 4

仅出于测试目的尝试以下方法。以下是高度不安全的克鲁格：

import asyncio, ssl, websockets

#todo kluge
#HIGHLY INSECURE
ssl_context = ssl.SSLContext()
ssl_context.check_hostname = False
ssl_context.verify_mode = ssl.CERT_NONE
#HIGHLY INSECURE
#todo kluge

uri = "wss://myAwesomeSSL.wss.kluge"

async with websockets.connect(uri, ssl=ssl_context) as websocket:
        greeting = await websocket.recv()
        print(f"< {greeting}")

如何创建Python安全websocket客户端请求？

4 个答案:

PS