Hello,
I am following "getting started" in the django channel docs as well as
"django channels form the ground up"
https://artandlogic.com/2016/06/django-channels-ground-part-2/ tutorial in
the django, using REDIS, NGINX and GUNICORN on digital ocean.
Based on console errors in the browser, I used this code modified from
modified from the docs to test the channel in my browser (JavaScript):
socket = new WebSocket("wss://" + window.location.host + ":8001/chat");
Then the rest is copied directly:
socket.onopen = function() {
socket.send("hello world");
}
// Call onopen directly if socket is already open
if (socket.readyState == WebSocket.OPEN) socket.onopen();
As the title states, the JavaScript test works on the run server -
python manage.py runserver 0.0.0.0:8000 but not o the production server.
Here is the terminal response to the run server command:
Performing system checks...
System check identified no issues (0 silenced).
October 30, 2017 - 10:40:10
Django version 1.11, using settings 'dojos.settings'
Starting Channels development server at http://0.0.0.0:8000/
Channel layer default (channels_panel.apps.DebugChannelLayer)
Quit the server with CONTROL-C.
2017-10-30 10:40:10,203 - INFO - worker - Listening on channels
http.request, websocket.connect, websocket.disconnect, websocket.receive
2017-10-30 10:40:10,205 - INFO - worker - Listening on channels
http.request, websocket.connect, websocket.disconnect, websocket.receive
2017-10-30 10:40:10,206 - INFO - worker - Listening on channels
http.request, websocket.connect, websocket.disconnect, websocket.receive
2017-10-30 10:40:10,208 - INFO - server - HTTP/2 support not enabled
(install the http2 and tls Twisted extras)
2017-10-30 10:40:10,208 - INFO - server - Using busy-loop synchronous mode
on channel layer
2017-10-30 10:40:10,209 - INFO - server - Listening on endpoint
tcp:port=8000:interface=0.0.0.0
2017-10-30 10:40:10,210 - INFO - worker - Listening on channels
http.request, websocket.connect, websocket.disconnect, websocket.receive
And then to the JavaScript test:
[2017/10/30 10:41:07] HTTP GET /favicon.ico 200 [0.24, 75.82.191.111:35111]
[2017/10/30 10:41:16] WebSocket HANDSHAKING /chat/ [75.82.191.111:47589]
[2017/10/30 10:41:16] WebSocket CONNECT /chat/ [75.82.191.111:47589]
On the production server, here is the console error:
VM381:1 Uncaught DOMException: Failed to execute 'send' on 'WebSocket':
Still in CONNECTING state.
at <anonymous>:1:8
(anonymous) @ VM381:1
VM379:1 WebSocket connection to 'wss://joinourstory.com:8001/chat' failed:
Error in connection establishment: net::ERR_CONNECTION_TIMED_OUT
These things seem to be relevant:
SETTINGS.PY copied exactly tutorial:
REDIS_HOST = os.environ.get('REDIS_HOST', 'localhost')
CHANNEL_LAYERS = {
"default": {
"BACKEND": "asgi_redis.RedisChannelLayer",
"CONFIG": {
"hosts": [("localhost", 6379)],
},
"ROUTING": "dojos.routing.channel_routing",
},
}
ROUTING.PY and CONSUMERS.PY copied exactly from the docs.
Here is the supervisor configuration:
[program:dojos]
command=/home/adam/dojos/bin/gunicorn_start
user=adam
autostart=true
autorestart=true
redirect_stderr=true
stdout_logfile=/home/adam/logs/gunicorn-error.log
[program:server_workers]
command=/home/adam/dojos/venv/bin/python /home/adam/dojos/manage.py
runworker
directory=/home/adam/dojos
user=adam
autostart=true
autorestart=true
redirect_stderr=true
stopasgroup=true
[program:server_interface]
command=/home/adam/dojos/venv/bin/daphne -b 127.0.0.1 -p 8001
dojos.asgi:channel_layer
directory=/home/adam/dojos
autostart=true
autorestart=true
stopasgroup=true
user=adam
This seems to be working as this is the response to sudo supervisorctl
status:
dojos RUNNING pid 27834, uptime 0:22:29
server_interface RUNNING pid 27835, uptime 0:22:29
server_workers RUNNING pid 27836, uptime 0:22:29
Here is the nginx config file (NOTE I HAVE TO USE SSL)
# Enable upgrading of connection (and websocket proxying) depending on the
# presence of the upgrade field in the client request header
map $http_upgrade $connection_upgrade {
default upgrade;
'' close;
}
# Create an upstream alias to where we've set daphne to bind to
upstream dojos {
server 127.0.0.1:8001;
}
server {
listen 80;
server_name joinourstory.com www.joinourstory.com;
return 301 https://$server_name$request_uri;
}
server {
listen 443 ssl;
server_name joinourstory.com www.joinourstory.com;
ssl on;
ssl_certificate /etc/nginx/ssl/chainedcert.crt;
ssl_certificate_key /etc/nginx/ssl/josserver.key;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_prefer_server_ciphers on;
ssl_ciphers REDACTED
location = /favicon.ico { access_log off; log_not_found off; }
location /static/ {
root /home/adam/dojos;
}
location /media/ {
root /home/adam/dojos;
}
location / {
# Pass request to the upstream alias
proxy_pass http://unix:/home/adam/gunicorn.sock;
# Require http version 1.1 to allow for upgrade requests
proxy_http_version 1.1;
# We want proxy_buffering off for proxying to websockets.
proxy_buffering off;
# http://en.wikipedia.org/wiki/X-Forwarded-For
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
# enable this if you use HTTPS:
proxy_set_header X-Forwarded-Proto https;
# pass the Host: header from the client for the sake of redirects
proxy_set_header Host $http_host;
# We've set the Host header, so we don't need Nginx to muddle
proxy_redirect off;
# Depending on the request value, set the Upgrade and connection
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
}
}
The nginx-error.log is empty and everything else on the site seems to be
working fine.
Please help!
Thanks Adam
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