Easily send messages downstream to a web browser on dedicated channels.
ESPubSub is a Go HTTP Handler which allows clients to subscribe to channels via EventSource. Event Source is a simple browser api for reading from a long poll connection. All common browsers, except IE and Android mobile, support it. See the poyfills for unsupported browsers.
Channels receive data (strings) via a Redis PUBLISH command. ESPubSub will need to connect to a running Redis server.
git clone git@github.com:jweir/espubsub.git
cd espubsub/server
go run espubsub_server.go
Connect to http://localhost:8080/ with your browser
From the command line send Redis PUBLISH commands
redis-cli PUBLISH /events/alpha "Hello Alpha"
redis-cli PUBLISH /events/beta "`date`"
The demo shows has one channel(/events/*) using a glob to listen to multiple channels.
Some EventSource polyfills for unsupported browsers
https://github.com/remy/polyfills/blob/master/EventSource.js
https://github.com/Yaffle/EventSource
http://github.com/antage/eventsource and http://github.com/vmihailenco/redis
Copyright (c) 2012 John Weir
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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