A pure stream http push technology for your Nginx setup.
Comet made easy and really scalable.
Supports EventSource, WebSocket, Long Polling, and Forever Iframe. See some examples bellow.
This module is not distributed with the Nginx source. See the installation instructions.
Available on github at nginx_push_stream_module
Always take a look at CHANGELOG.textile to see what’s new.
After you try this module and like it, feel free to give something back, and help in the maintenance of the project ;)
This module is considered production ready.
location /channels-stats {
# activate channels statistics mode for this location
push_stream_channels_statistics;
# query string based channel id
set $push_stream_channel_id $arg_id;
}
location /pub {
# activate publisher (admin) mode for this location
push_stream_publisher admin;
# query string based channel id
set $push_stream_channel_id $arg_id;
}
location ~ /sub/(.*) {
# activate subscriber (streaming) mode for this location
push_stream_subscriber;
# positional channel path
set $push_stream_channels_path $1;
}
You can feel the flavor right now at the command line. Try using more than
one terminal and start playing http pubsub:
# Subs
curl -s -v 'http://localhost/sub/my_channel_1'
curl -s -v 'http://localhost/sub/your_channel_1'
curl -s -v 'http://localhost/sub/your_channel_2'
# Pubs
curl -s -v -X POST 'http://localhost/pub?id=my_channel_1' -d 'Hello World!'
curl -s -v -X POST 'http://localhost/pub?id=your_channel_1' -d 'Hi everybody!'
curl -s -v -X POST 'http://localhost/pub?id=your_channel_2' -d 'Goodbye!'
# Channels Stats for publisher (json format)
curl -s -v 'http://localhost/pub?id=my_channel_1'
# All Channels Stats summarized (json format)
curl -s -v 'http://localhost/channels-stats'
# All Channels Stats detailed (json format)
curl -s -v 'http://localhost/channels-stats?id=ALL'
# Prefixed Channels Stats detailed (json format)
curl -s -v 'http://localhost/channels-stats?id=your_channel_*'
# Channels Stats (json format)
curl -s -v 'http://localhost/channels-stats?id=my_channel_1'
# Delete Channels
curl -s -v -X DELETE 'http://localhost/pub?id=my_channel_1'
(1) Defining locations, (2) Main configuration, (3) Subscribers configuration, (4) Publishers configuration, (5) Channels Statistics configuration, (6) WebSocket configuration
# clone the project
git clone http://github.com/wandenberg/nginx-push-stream-module.git
NGINX_PUSH_STREAM_MODULE_PATH=$PWD/nginx-push-stream-module
# get desired nginx version (works with 1.2.x, 1.1.x, 1.0.x, 0.9.x, 0.8.x series)
wget http://nginx.org/download/nginx-1.2.0.tar.gz
# unpack, configure and build
tar xzvf nginx-1.2.0.tar.gz
cd nginx-1.2.0
./configure --add-module=../nginx-push-stream-module
make
# install and finish
sudo make install
# check
sudo /usr/local/nginx/sbin/nginx -v
nginx version: nginx/1.2.0
# test configuration
sudo /usr/local/nginx/sbin/nginx -c $NGINX_PUSH_STREAM_MODULE_PATH/misc/nginx.conf -t
the configuration file $NGINX_PUSH_STREAM_MODULE_PATH/misc/nginx.conf syntax is ok
configuration file $NGINX_PUSH_STREAM_MODULE_PATH/misc/nginx.conf test is successful
# run
sudo /usr/local/nginx/sbin/nginx -c $NGINX_PUSH_STREAM_MODULE_PATH/misc/nginx.conf
This module controls everything needed to send the messages to subscribers.
So it disable Nginx’s chuncked filter to reduce memory consumption in streaming connections.
Just as information is listed below the minimum amount of memory used for each object:
- message on shared = 200 bytes
- channel on shared = 536 bytes
- subscriber
- on shared = 230 bytes
- on system = 7100 bytes
The server tests for this module are written in Ruby, and are acceptance tests, click here for more details.
Nginx Push Stream Module Discussion Group