使用 django 作为身份验证服务器和登录页面的 auth_request nginx 反向代理

Question

我有一个 NginX，其受保护位置为 192.168.56.108，我的 django 应用程序位于 192.168.56.1，
受保护位置将对在端口 8008 上运行的本地“sFlow-RT”安装进行反向代理

这是我的 nginx 默认站点配置

server {
    listen 80 default_server;
    listen [::]:80 default_server;

    root /var/www/html;

    # Add index.php to the list if you are using PHP
    index index.html index.htm index.nginx-debian.html;

    server_name _;

    location /sflow-rt/ {
      proxy_buffering off;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header X-Forwarded-Prefix /sflow-rt/;
      proxy_set_header Host $host;
      proxy_pass http://localhost:8008/;
      proxy_redirect ~^http://[^/]+(/.+)$ /sflow-rt$1;
      # insert access policy below
      auth_request /auth;
    }

        location = /auth {
        internal ;
                proxy_pass http://192.168.56.1:8000/xpages/authonly;
        proxy_pass_request_body off;
        proxy_set_header        Content-Length "";
    }
    location / {
        # First attempt to serve request as file, then
        # as directory, then fall back to displaying a 404.
        try_files $uri $uri/ =404;
    }

}

下面是我的 django 视图，它将被“proxy_pass”调用http://192.168.56.1:8000/xpages/authonly'

class authonly(FormView):
    template_name = 'auth_only.html'
    form_class = auth_only_form

    def get(self, request, *args, **kwargs):
        if request.user.is_authenticated:
            print(f'REQUEST USER: {request.user}')
            return HttpResponse('authenticated',status=200)

        print('Non Authenticated User')
        form = self.form_class()
        return render(request, self.template_name, {"form": form})



    def form_valid(self, form):
        print(f'Cleaned data => {form.cleaned_data}')
        name = form.cleaned_data['name']
        password = form.cleaned_data['password']
        try :
            user = authenticate(username = name, password=password)
            login(self.request, user)
            return HttpResponse(status=200)
        except Exception as e:
            print(f'Failed Auth:\n\t{traceback.format_exc()}')
            return HttpResponse(status=400)

仅当用户未经身份验证时，该视图才会显示一个简单的登录屏幕。

问题是，作为“正常”的 Web 服务器，任何非错误响应都将带有 http 状态 200 .. 而 nginx auth_request 将 200 视为“可以继续”。 这样会导致登录页面永远不会显示... 因为表单 html 也带有 http 状态 200。

请告诉我如何解决这个问题