class Rack::Handler::SCGI

# File lib/rack/handler/scgi.rb, line 29
def initialize(settings = {})
  @app = settings[:app]
  super(settings)
end

# File lib/rack/handler/scgi.rb, line 11
def self.run(app, **options)
  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

# 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

# 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)

  env.update(
    RACK_VERSION      => Rack::VERSION,
    RACK_INPUT        => rack_input,
    RACK_ERRORS       => $stderr,
    RACK_MULTITHREAD  => true,
    RACK_MULTIPROCESS => true,
    RACK_RUNONCE      => 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