Class: Rack::Handler::WEBrick

Inherits:
WEBrick::HTTPServlet::AbstractServlet
  • Object
show all
Defined in:
lib/rack/handler/webrick.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(server, app) ⇒ WEBrick

Returns a new instance of WEBrick.



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# File 'lib/rack/handler/webrick.rb', line 52

def initialize(server, app)
  super server
  @app = app
end

Class Method Details

.run(app, options = {}) {|@server| ... } ⇒ Object

Yields:

  • (@server) 


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# File 'lib/rack/handler/webrick.rb', line 25

def self.run(app, options={})
  environment  = ENV['RACK_ENV'] || 'development'
  default_host = environment == 'development' ? 'localhost' : '0.0.0.0'

  options[:BindAddress] = options.delete(:Host) || default_host
  options[:Port] ||= 8080
  @server = ::WEBrick::HTTPServer.new(options)
  @server.mount "/", Rack::Handler::WEBrick, app
  yield @server  if block_given?
  @server.start
end

.shutdown ⇒ Object 



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# File 'lib/rack/handler/webrick.rb', line 47

def self.shutdown
  @server.shutdown
  @server = nil
end

.valid_options ⇒ Object 



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# File 'lib/rack/handler/webrick.rb', line 37

def self.valid_options
  environment  = ENV['RACK_ENV'] || 'development'
  default_host = environment == 'development' ? 'localhost' : '0.0.0.0'

  {
    "Host=HOST" => "Hostname to listen on (default: #{default_host})",
    "Port=PORT" => "Port to listen on (default: 8080)",
  }
end

Instance Method Details

#service(req, res) ⇒ Object 



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# File 'lib/rack/handler/webrick.rb', line 57

def service(req, res)
  res.rack = true
  env = req.meta_vars
  env.delete_if { |k, v| v.nil? }

  rack_input = StringIO.new(req.body.to_s)
  rack_input.set_encoding(Encoding::BINARY) if rack_input.respond_to?(:set_encoding)

  env.update({"rack.version" => Rack::VERSION,
               "rack.input" => rack_input,
               "rack.errors" => $stderr,

               "rack.multithread" => true,
               "rack.multiprocess" => false,
               "rack.run_once" => false,

               "rack.url_scheme" => ["yes", "on", "1"].include?(env["HTTPS"]) ? "https" : "http",

               "rack.hijack?" => true,
               "rack.hijack" => lambda { raise NotImplementedError, "only partial hijack is supported."},
               "rack.hijack_io" => nil,
             })

  env["HTTP_VERSION"] ||= env["SERVER_PROTOCOL"]
  env[QUERY_STRING] ||= ""
  unless env[PATH_INFO] == ""
    path, n = req.request_uri.path, env["SCRIPT_NAME"].length
    env[PATH_INFO] = path[n, path.length-n]
  end
  env["REQUEST_PATH"] ||= [env["SCRIPT_NAME"], env[PATH_INFO]].join

  status, headers, body = @app.call(env)
  begin
    res.status = status.to_i
    headers.each { |k, vs|
      next if k.downcase == "rack.hijack"

      if k.downcase == "set-cookie"
        res.cookies.concat vs.split("\n")
      else
        # Since WEBrick won't accept repeated headers,
        # merge the values per RFC 1945 section 4.2.
        res[k] = vs.split("\n").join(", ")
      end
    }

    io_lambda = headers["rack.hijack"]
    if io_lambda
      rd, wr = IO.pipe
      res.body = rd
      res.chunked = true
      io_lambda.call wr
    elsif body.respond_to?(:to_path)
      res.body = ::File.open(body.to_path, 'rb')
    else
      body.each { |part|
        res.body << part
      }
    end
  ensure
    body.close  if body.respond_to? :close
  end
end