Method: Down::NetHttp#open

Defined in:
lib/down/net_http.rb

#open(uri, options = {}) ⇒ Object 



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# File 'lib/down/net_http.rb', line 114

def open(uri, options = {})
  options = @options.merge(options)

  begin
    uri = URI(uri)
    raise Down::InvalidUrl, "URL scheme needs to be http or https" unless uri.is_a?(URI::HTTP)
  rescue URI::InvalidURIError => exception
    raise Down::InvalidUrl, exception.message
  end

  http_class = Net::HTTP

  if options[:proxy]
    proxy = URI(options[:proxy])
    http_class = Net::HTTP::Proxy(proxy.hostname, proxy.port, proxy.user, proxy.password)
  end

  http = http_class.new(uri.host, uri.port)

  # taken from open-uri implementation
  if uri.is_a?(URI::HTTPS)
    http.use_ssl = true
    http.verify_mode = options[:ssl_verify_mode] || OpenSSL::SSL::VERIFY_PEER
    store = OpenSSL::X509::Store.new
    if options[:ssl_ca_cert]
      Array(options[:ssl_ca_cert]).each do |cert|
        File.directory?(cert) ? store.add_path(cert) : store.add_file(cert)
      end
    else
      store.set_default_paths
    end
    http.cert_store = store
  end

  http.read_timeout = options[:read_timeout] if options.key?(:read_timeout)
  http.open_timeout = options[:open_timeout] if options.key?(:open_timeout)

  request_headers = options.select { |key, value| key.is_a?(String) }
  request_headers["Accept-Encoding"] = "" # otherwise FiberError can be raised

  get = Net::HTTP::Get.new(uri.request_uri, request_headers)
  get.basic_auth(uri.user, uri.password) if uri.user || uri.password

  request = Fiber.new do
    http.start do
      http.request(get) do |response|
        Fiber.yield response
        response.instance_variable_set("@read", true)
      end
    end
  end

  begin
    response = request.resume
  rescue => exception
    request_error!(exception)
  end

  response_error!(response) unless (200..299).cover?(response.code.to_i)

  body_chunks = Enumerator.new do |yielder|
    begin
      response.read_body { |chunk| yielder << chunk }
    rescue => exception
      request_error!(exception)
    end
  end

  Down::ChunkedIO.new(
    chunks:     body_chunks,
    size:       response["Content-Length"] && response["Content-Length"].to_i,
    encoding:   response.type_params["charset"],
    rewindable: options.fetch(:rewindable, true),
    on_close:   -> { request.resume }, # close HTTP connnection
    data: {
      status:   response.code.to_i,
      headers:  response.each_header.inject({}) { |headers, (downcased_name, value)|
                  name = downcased_name.split("-").map(&:capitalize).join("-")
                  headers.merge!(name => value)
                },
      response: response,
    },
  )
end