Function getUnpackedSettings

lib/internal/http2/core.js:3708–3754

(buf, options = kEmptyObject)

}

function getUnpackedSettings(buf, options = kEmptyObject) {
  if (!isArrayBufferView(buf) || buf.length === undefined) {
    throw new ERR_INVALID_ARG_TYPE('buf',
                                   ['Buffer', 'TypedArray'], buf);
  }
  if (buf.length % 6 !== 0)
    throw new ERR_HTTP2_INVALID_PACKED_SETTINGS_LENGTH();
  const settings = {};
  let offset = 0;
  while (offset < buf.length) {
    const id = readUInt16BE(buf, offset);
    offset += 2;
    const value = readUInt32BE(buf, offset);
    switch (id) {
      case NGHTTP2_SETTINGS_HEADER_TABLE_SIZE:
        settings.headerTableSize = value;
        break;
      case NGHTTP2_SETTINGS_ENABLE_PUSH:
        settings.enablePush = value !== 0;
        break;
      case NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS:
        settings.maxConcurrentStreams = value;
        break;
      case NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE:
        settings.initialWindowSize = value;
        break;
      case NGHTTP2_SETTINGS_MAX_FRAME_SIZE:
        settings.maxFrameSize = value;
        break;
      case NGHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE:
        settings.maxHeaderListSize = settings.maxHeaderSize = value;
        break;
      case NGHTTP2_SETTINGS_ENABLE_CONNECT_PROTOCOL:
        settings.enableConnectProtocol = value !== 0;
        break;
      default:
        settings.customSettings ||= {};
        settings.customSettings[id] = value;
    }
    offset += 4;
  }

  if (options != null && options.validate)
    validateSettings(settings);

  return settings;
}

function performServerHandshake(socket, options = kEmptyObject) {
  options = initializeOptions(options);