class Excon::Middleware::Hijack

Hijack is an Excon middleware which parses response headers and then yields the underlying TCP socket for raw TCP communication (used to attach to STDIN of containers).

Public Class Methods

valid_parameter_keys() click to toggle source
# File lib/excon/middlewares/hijack.rb, line 9
def self.valid_parameter_keys
  [:hijack_block].freeze
end

Public Instance Methods

build_response(status, socket) click to toggle source
# File lib/excon/middlewares/hijack.rb, line 13
def build_response(status, socket)
  response = {
    :body          => '',
    :headers       => Excon::Headers.new,
    :status        => status,
    :remote_ip     => socket.respond_to?(:remote_ip) &&
                      socket.remote_ip,
  }
  if socket.data[:scheme] =~ /^(https?|tcp)$/
    response.merge({
      :local_port    => socket.respond_to?(:local_port) &&
                        socket.local_port,
      :local_address => socket.respond_to?(:local_address) &&
                        socket.local_address
    })
  end
  response
end
response_call(datum) click to toggle source
# File lib/excon/middlewares/hijack.rb, line 32
def response_call(datum)
  if datum[:hijack_block]
    # Need to process the response headers here rather than in
    # Excon::Middleware::ResponseParser as the response parser will
    # block trying to read the body.
    socket = datum[:connection].send(:socket)

    # c.f. Excon::Response.parse
    until match = /^HTTP\/\d+\.\d+\s(\d{3})\s/.match(socket.readline); end
    status = match[1].to_i

    datum[:response] = build_response(status, socket)

    Excon::Response.parse_headers(socket, datum)
    datum[:hijack_block].call socket.instance_variable_get(:@socket)
  end

  @stack.response_call(datum)
end