django channels behind https
<p>Django-channels websocket was working well on a AWS server until I installed letsencript ssl. I tried another certificate but the wss is not working. I saw this online deployment that shows that channels can work behind https:</p>

<p><a href="https://django-channels-example.herokuapp.com/" rel="noreferrer">https://django-channels-example.herokuapp.com/</a></p>

<p>I followed andrewgodwin sugestions here:</p>

<p><a href="https://github.com/django/channels/issues/248" rel="noreferrer">https://github.com/django/channels/issues/248</a></p>

<p>I pointed daphne to port 8000:</p>

<pre><code>daphne -b 0.0.0.0 vp.asgi:channel_layer --port 8000 -v 2
</code></pre>

<p>And I used the same port in my javascript:</p>

<pre><code>chatsock = new WebSocket( ws_scheme + '://' + window.location.host + ":8000/chat" );
</code></pre>

<p>My nginx config: </p>

<pre><code>server {
        listen 80;
        server_name mysite.com www.example.com;
        return 301 https://www.example.com$request_uri;
}

server{
        listen 443 ssl;
        server_name mysite.com www.example.com;
        ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
        ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
        root /home/ubuntu/vp;

        access_log /var/log/nginx/guni-access.log;
        error_log /var/log/nginx/guni-error.log info;

        location /wss/ {
                proxy_set_header X-Real-IP $remote_addr;
                proxy_set_header X-Forwarded-for $proxy_add_x_forwarded_for;
                proxy_set_header Host $http_host;
                proxy_pass http://0.0.0.0:8000;
                proxy_http_version 1.1;
                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection "upgrade";
        }

    location / {
        proxy_pass http://0.0.0.0:8000;
        proxy_set_header    HOST    $host;
        proxy_set_header    X-Real-IP   $remote_addr;
        proxy_set_header    X-Forwarded-for $remote_addr;
        proxy_set_header X-Forwarded-Proto $scheme;
        port_in_redirect off;
        proxy_connect_timeout 300;
    }

    location ~ /.well-known {
                allow all;
        }

    location /static/ {
        alias /home/ubuntu/vp/static/;
        expires 30d;
    }
}
</code></pre>

<p>My browser tells that:</p>

<p>Firefox can’t establish a connection to the server at wss://example.com:8000/chat.</p>

<p>Any suggestions?
Thanks. </p>