Class: Rack::Handler::SCGI

Inherits:
SCGI::Processor
  • Object
show all
Defined in:
lib/rack/handler/scgi.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(settings = {}) ⇒ SCGI

Returns a new instance of SCGI.



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# File 'lib/rack/handler/scgi.rb', line 29

def initialize(settings = {})
  @app = settings[:app]
  super(settings)
end

Instance Attribute Details

#app ⇒ Object

Returns the value of attribute app.



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# File 'lib/rack/handler/scgi.rb', line 9

def app
  @app
end

Class Method Details

.run(app, options = nil) ⇒ Object 



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# File 'lib/rack/handler/scgi.rb', line 11

def self.run(app, options=nil)
  options[:Socket] = UNIXServer.new(options[:File]) if options[:File]
  new(options.merge(:app=>app,
                    :host=>options[:Host],
                    :port=>options[:Port],
                    :socket=>options[:Socket])).listen
end

.valid_options ⇒ Object 



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# File 'lib/rack/handler/scgi.rb', line 19

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

#process_request(request, input_body, socket) ⇒ Object 



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# File 'lib/rack/handler/scgi.rb', line 34

def process_request(request, input_body, socket)
  env = Hash[request]
  env.delete "HTTP_CONTENT_TYPE"
  env.delete "HTTP_CONTENT_LENGTH"
  env["REQUEST_PATH"], env[QUERY_STRING] = env["REQUEST_URI"].split('?', 2)
  env["HTTP_VERSION"] ||= env["SERVER_PROTOCOL"]
  env[PATH_INFO] = env["REQUEST_PATH"]
  env["QUERY_STRING"] ||= ""
  env["SCRIPT_NAME"] = ""

  rack_input = StringIO.new(input_body)
  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" => true,
               "rack.run_once" => false,

               "rack.url_scheme" => ["yes", "on", "1"].include?(env["HTTPS"]) ? "https" : "http"
             })
  status, headers, body = app.call(env)
  begin
    socket.write("Status: #{status}\r\n")
    headers.each do |k, vs|
      vs.split("\n").each { |v| socket.write("#{k}: #{v}\r\n")}
    end
    socket.write("\r\n")
    body.each {|s| socket.write(s)}
  ensure
    body.close if body.respond_to? :close
  end
end