initial commit

.gitignore

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+*.gem
+*.rbc
+.bundle
+.config
+.yardoc
+Gemfile.lock
+InstalledFiles
+_yardoc
+coverage
+doc/
+lib/bundler/man
+pkg
+rdoc
+spec/reports
+test/tmp
+test/version_tmp
+tmp

.rspec

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+--color
+--format=nested
+--backtrace

.simplecov

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+SimpleCov.start

.yardopts

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+--markup markdown
+-
+LICENSE.md

Gemfile

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+source 'http://rubygems.org'
+
+# Specify your gem's dependencies in pow_proxy.gemspec
+gemspec

LICENSE.md

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+Copyright (c) 2010 Steve Agalloco, Assaf Arkin
+
+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.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Rakefile

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+#!/usr/bin/env rake
+
+require 'bundler'
+Bundler::GemHelper.install_tasks
+
+require 'rspec/core/rake_task'
+RSpec::Core::RakeTask.new(:spec)
+
+task :default => :spec
+task :test => :spec
+
+require 'yard'
+namespace :doc do
+  YARD::Rake::YardocTask.new do |task|
+    task.files   = ['LICENSE.md', 'lib/**/*.rb']
+    task.options = ['--markup', 'markdown']
+  end
+end

Readme.md

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+PowProxy
+========
+
+PowProxy is a simple rack-based proxy that allows you to run your node apps through [Pow](http://pow.cx).
+
+PowProxy is based on a blog post by [Assaf Arkin](/assaf). It's super easy to use. You really should just read [Assaf's blog post](http://labnotes.org/2011/08/09/using-pow-with-your-node-js-project/) to get the full explanation.
+
+Usage
+-----
+
+Create a `config.ru` file in your project's root with the following:
+
+```ruby
+require 'pow_proxy'
+run PowProxy.new
+```
+
+By default, it assumes the host to be `localhost` and the port to be `3000` however you can configure that to be anything you'd like:
+
+```ruby
+require 'pow_proxy'
+run PowProxy.new(:host => '127.0.0.1', :port => 8080)
+```
+
+You can also set the host and port by exporting the `HOST` and `PORT` environment variables in your `.powenv`.
+
+Make sure your node app is running, symlink your app so that Pow knows about it and you'll be all set.
+
+Copyright
+---------
+
+Copyright (c) 2011 Steve Agalloco, Assaf Arkin. See [LICENSE](LICENSE.md) for details.

lib/pow_proxy.rb

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+require "net/http"
+require "rack"
+
+class PowProxy
+  DEFAULT_HOST = "127.0.0.1"
+  DEFAULT_PORT = 3000
+
+  attr_reader :host, :port
+
+  def initialize(options = {})
+    @host = options.delete(:host) || ENV['HOST'] || DEFAULT_HOST
+    @port = options.delete(:port) || ENV['PORT'] || DEFAULT_PORT
+  end
+
+  def call(env)
+    begin
+      request = Rack::Request.new(env)
+      headers = {}
+      env.each do |key, value|
+        if key =~ /^http_(.*)/i
+          headers[$1] = value
+        end
+      end
+
+      headers["Content-Type"] = request.content_type if request.content_type
+      headers["Content-Length"] = request.content_length if request.content_length
+
+      http = Net::HTTP.new(@host, @port)
+      http.start do |http|
+        response = http.send_request(request.request_method, request.fullpath, request.body.read, headers)
+        headers = response.to_hash
+        headers.delete "transfer-encoding"
+        [response.code, headers, [response.body]]
+      end
+    rescue Errno::ECONNREFUSED
+      [500, {}, ["Could not establish a connection to #{@host}:#{@port}, make sure your node process is running."]]
+    end
+  end
+end

lib/pow_proxy/version.rb

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+class PowProxy
+  VERSION = "0.0.1"
+end

pow_proxy.gemspec

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+# -*- encoding: utf-8 -*-
+require File.expand_path('../lib/pow_proxy/version', __FILE__)
+
+Gem::Specification.new do |gem|
+  gem.name          = "pow_proxy"
+  gem.version       = PowProxy::VERSION
+
+  gem.authors       = ["Steve Agalloco"]
+  gem.email         = ["steve.agalloco@gmail.com"]
+  gem.description   = 'A simple rack-based proxy that allows you to run your node apps through Pow.'
+  gem.summary       = gem.description
+  gem.homepage      = "https://github.com/spagalloco/pow_proxy"
+
+  gem.add_dependency 'rack'
+  gem.add_development_dependency 'rake', '~> 0.9'
+  gem.add_development_dependency 'rdiscount', '~> 1.6'
+  gem.add_development_dependency 'rspec', '~> 2.7'
+  gem.add_development_dependency 'simplecov', '~> 0.5'
+  gem.add_development_dependency 'yard', '~> 0.7'
+  gem.add_development_dependency 'webmock', '~> 1.7'
+
+  gem.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
+  gem.files         = `git ls-files`.split("\n")
+  gem.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
+  gem.require_paths = ["lib"]
+end

spec/pow_proxy_spec.rb

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+require 'spec_helper'
+
+describe PowProxy do
+
+  describe '.new' do
+    context 'defaults' do
+      before do
+        @proxy = PowProxy.new
+      end
+
+      it 'defaults the host to "127.0.0.1"' do
+        @proxy.host.should eq('127.0.0.1')
+      end
+
+      it 'defaults the port to 3000' do
+        @proxy.port.should eq(3000)
+      end
+    end
+
+    context 'options' do
+      before do
+        @proxy = PowProxy.new(:host => 'localhost2', :port => 4242)
+      end
+
+      it 'sets the host to "localhost2"' do
+        @proxy.host.should eq('localhost2')
+      end
+
+      it 'sets the port to 4242' do
+        @proxy.port.should eq(4242)
+      end
+    end
+
+    context 'ENV' do
+      before do
+        ENV['HOST'] = 'monk.local'
+        ENV['PORT'] = '8080'
+        @proxy = PowProxy.new
+      end
+
+      it 'defaults the host to "monk.local"' do
+        @proxy.host.should eq('monk.local')
+      end
+
+      it 'defaults the port to 8080' do
+        @proxy.port.should eq('8080')
+      end
+    end
+  end
+
+  describe 'integration' do
+    before do
+      @proxy = PowProxy.new(:host => 'app.local', :port => 2121)
+    end
+
+    it 'returns the requested content' do
+      stub_request(:get, "http://app.local:2121/").
+        with(:headers => {'Accept'=>'*/*', 'User-Agent'=>'Ruby'}).
+        to_return(:status => 200, :body => "abcdefg", :headers => {})
+
+      env = { "REQUEST_METHOD"=>"GET", "PATH_INFO"=>"/", "rack.input" => StringIO.new }
+      response = @proxy.call(env)
+      body = response.last.shift
+      body.should eq('abcdefg')
+    end
+
+    it 'removes the transfer-encoding header from the response' do
+      stub_request(:get, "http://app.local:2121/").
+        with(:headers => {'Accept'=>'*/*', 'User-Agent'=>'Ruby'}).
+        to_return(:status => 200, :body => "abcdefg", :headers => { 'Transfer-Encoding' => 'chunked'})
+
+      env = { "REQUEST_METHOD"=>"GET", "PATH_INFO"=>"/", "rack.input" => StringIO.new }
+      response = @proxy.call(env)
+      headers = response[1]
+      headers.should_not have_key('transfer-encoding')
+    end
+
+    it 'passes headers to the node server' do
+      stub_request(:get, "http://app.local:2121/").
+        with(:headers => {'Accept'=>'*/*', 'Accept-Encoding'=>'gzip,deflate,sdch', 'User-Agent'=>'Ruby'}).
+        to_return(:status => 200, :body => "abcdefg", :headers => {})
+
+      env = { "REQUEST_METHOD"=>"GET", "PATH_INFO"=>"/", "rack.input" => StringIO.new, 'HTTP_ACCEPT_ENCODING' => "gzip,deflate,sdch" }
+      response = @proxy.call(env)
+      body = response.last.shift
+      body.should eq('abcdefg')
+    end
+
+    it 'reports an error when it cannot request to the node server' do
+      Rack::Request.stub(:new).and_raise(Errno::ECONNREFUSED)
+
+      env = { "REQUEST_METHOD"=>"GET", "PATH_INFO"=>"/", "rack.input" => StringIO.new }
+      response = @proxy.call(env)
+      response.first.should eq(500)
+      body = response.last.shift
+      body.should match(/Could not establish a connection/)
+    end
+  end
+
+end

spec/spec_helper.rb

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+$:.unshift File.expand_path('..', __FILE__)
+$:.unshift File.expand_path('../../lib', __FILE__)
+require 'simplecov'
+require 'pow_proxy'
+require 'rspec'
+require 'webmock/rspec'