[ANN] Sunshowers - Web Sockets for Ruby, Rack+Rainbows!

[Eric Wong <normalperson-rMlxZR9MS24@public.gmane.org>]

Sunshowers is a Ruby library for Web Sockets.  It exposes an easy-to-use
API that may be used in both clients and servers.  On the server side,
it is designed to work with Rack::Request and Rainbows! concurrency
models that expose a synchronous application flow.  On the client side,
it may be used as a standalone wrapper for IO-like objects.

* http://rainbows.rubyforge.org/sunshowers/
* sunshowers-TBHja+091Wbby3iVrkZq2A@public.gmane.org
* git://git.bogomips.org/sunshowers.git

It appears works well with the echo_client.py example shipped with
pywebsocket.  It has not been tested against normal web browsers, though
there's no reason it shouldn't work.

== Features

* supports reads and writes of both UTF-8 and binary Web Socket frames

* compatible with Revactor, Rainbows::Fiber::IO and core Ruby IO objects

* pure Ruby implementation, should be highly portable, tested under 1.9

== Install

You may download the tarball from the Rainbows! project page on Rubyforge
and run setup.rb after unpacking it:

http://rubyforge.org/frs/?group_id=8977

You may also install it via RubyGems on Gemcutter:

  gem install sunshowers

== Usage

Make sure you're using one of the following concurrency models
for Rainbows!:

* FiberSpawn
* FiberPool
* Revactor
* ThreadSpawn
* ThreadPool

  # A simple echo server example
  require "sunshowers"
  use Rack::ContentLength
  use Rack::ContentType
  run lambda { |env|
    req = Sunshowers::Request.new(env)
    if req.ws?
      req.ws_handshake!
      ws_io = req.ws_io
      ws_io.each do |record|
        ws_io.write(record)
        break if record == "Goodbye"
      end
      req.ws_quit! # Rainbows! should handle this quietly
    end
    [404, {}, []]
  }

Already using a Rack::Request-derived class?  Sunshowers::WebSocket may
also be included in any Rack::Request-derived class, so you can just
open it up and include it:

  class Sinatra::Request < Rack::Request
    include Sunshowers::WebSocket
  end

See the examples/ directory in the source tree for a client example.

-- 
Eric Wong
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