我有一个Nginx的工作配置代理到django通道的上游daphne服务器.但是,当我将我的站点移动到ssl时,我开始遇到与websocket请求有关的403错误.这是我的错误日志：

None - - [24/Apr/2017:02:43:36] "WSCONNECTING /pulse_events" - -
None - - [24/Apr/2017:02:43:36] "WSREJECT /pulse_events" - -
2017/04/24 02:43:37 [info] 465#465: *10 client 69.203.115.135 closed keepalive 
connection

并从访问日志：

- - [24/Apr/2017:02:48:54 +0000] "GET /pulse_events HTTP/1.1" 403 5 "-" "-"
- - [24/Apr/2017:02:49:03 +0000] "GET /pulse_state/ HTTP/2.0" 200 1376 "-" "Pulse/1 CFNetwork/811.4.18 Darwin/16.1.0"

我的Nginx配置如下：

upstream pulse_web_server {
    server unix:/home/pulseweb/run/gunicorn.sock fail_timeout=0;
}

upstream pulse_web_sockets {
   server unix:/home/pulseweb/run/daphne.sock;
}

map $http_upgrade $connection_upgrade {
     default upgrade;
     '' close;
}

server {
    listen 80;
    server_name backend.com;
    return 301 https://$host$request_uri;
}


server {
    listen         443 http2 ssl;
    server_name    backend.com;

    root /var/www/vhosts/backend.com;
  location ~ /.well-known {
       allow all;
  }

  include snippets/ssl-params.conf;
  ssl_certificate /etc/letsencrypt/live/backend.com/fullchain.pem;
  ssl_certificate_key /etc/letsencrypt/live/backend.com/privkey.pem;



    client_max_body_size 4G;

    access_log  /var/log/Nginx/pulse-access.log;
    error_log   /var/log/Nginx/pulse-error.log info;

    location /static/ {
        alias /var/www/vhosts/backend.com/static/;
    }

    location /pulse_events {
    proxy_pass http://pulse_web_sockets;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }

    location / {
      proxy_redirect off;
      proxy_set_header X-Real-IP $remote_addr;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header X-Forwarded-Proto $scheme;
      proxy_set_header Host $http_host;
      proxy_set_header X-Nginx-Proxy true;
      proxy_set_header Connection "";
      proxy_http_version 1.1;
      server_tokens off;
      proxy_buffering on;
      if (!-f $request_filename) {
          proxy_pass http://pulse_web_server;
          break;
      }
  }
}

这是我的要求.txt：

asgi-redis==0.14.0
asgiref==0.14.0
asyncio==3.4.3
autobahn==0.16.0
channels==0.17.2
daphne==0.14.3
Django==1.10
django-extensions==1.7.2
django-webpack-loader==0.3.3
djangorestframework==3.4.4
msgpack-python==0.4.8
python-dateutil==2.5.3
redis==2.10.5
requests==2.11.0
six==1.10.0
Twisted==16.2.0
txaio==2.5.1
zope.interface==4.2.0

任何见解将不胜感激.