Example of websocket server using python tornado library. Companion Android application found here.
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sockets.py

README.md

Websocket Server Example

Nathan Schwermann

Requires python, tornado, and nginx

pip install tornado

python sockets.py

Visit the webpage demo at http://localhost/list using the NGINX site configuration below (it is possible to use without nginx but sockets.py will need to be tweaked to load static files)

upstream tornado {
  server 127.0.0.1:8888;
}

server {
  listen 80 default; ## listen for ipv4; this line is default and implied
  #listen   [::]:80 default ipv6only=on; ## listen for ipv6

  root /var/www;
  index index.html index.htm index.php;

  # Make site accessible from http://localhost/
  server_name localhost;

  location / {
    # First attempt to serve request as file, then
    # as directory, then fall back to index.html
    try_files $uri $uri/ /index.html;
    # Uncomment to enable naxsi on this location
    # include /etc/nginx/naxsi.rules
  }

  location /list/static/{

  }

  location /list {
    root /var/www/list/;
    if ($query_string) {
      expires max;
    }
    proxy_pass http://tornado;
    proxy_http_version 1.1;
    proxy_pass_header Server;
    proxy_redirect off;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
    proxy_set_header Host $host;
  }

  location /doc/ {
    alias /usr/share/doc/;
    autoindex on;
    allow 127.0.0.1;
    deny all;
  }

}

The following supervisor configuration can be used to keep the tornado instance running

[program:tornado]
command=python /var/www/list/sockets.py
stdout_logfile=/var/www/list/log.txt
redirect_stderr=true

Liscence

Copyright 2013 Nathan Schwermann

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.