Function updateSettingsBuffer

lib/internal/http2/util.js:396–528

(settings)

}

function updateSettingsBuffer(settings) {
  let flags = 0;
  let numCustomSettings = 0;

  if (typeof settings.customSettings === 'object') {
    const customSettings = settings.customSettings;
    for (const setting in customSettings) {
      const val = customSettings[setting];
      if (typeof val === 'number') {
        let set = false;
        const nsetting = Number(setting);
        if (NumberIsNaN(nsetting) ||
          typeof nsetting !== 'number' ||
          0 >= nsetting ||
          nsetting > 0xffff)
          throw new ERR_HTTP2_INVALID_SETTING_VALUE.RangeError(
            'Range Error', nsetting, 0, 0xffff);
        if (NumberIsNaN(val) ||
            typeof val !== 'number' ||
            0 >= val ||
            val > 0xffffffff)
          throw new ERR_HTTP2_INVALID_SETTING_VALUE.RangeError(
            'Range Error', val, 0, 0xffffffff);
        if (nsetting < IDX_SETTINGS_FLAGS) {
          set = true;
          switch (nsetting) {
            case IDX_SETTINGS_HEADER_TABLE_SIZE:
              flags |= (1 << IDX_SETTINGS_HEADER_TABLE_SIZE);
              settingsBuffer[IDX_SETTINGS_HEADER_TABLE_SIZE] =
                val;
              break;
            case IDX_SETTINGS_ENABLE_PUSH:
              flags |= (1 << IDX_SETTINGS_ENABLE_PUSH);
              settingsBuffer[IDX_SETTINGS_ENABLE_PUSH] = val;
              break;
            case IDX_SETTINGS_INITIAL_WINDOW_SIZE:
              flags |= (1 << IDX_SETTINGS_INITIAL_WINDOW_SIZE);
              settingsBuffer[IDX_SETTINGS_INITIAL_WINDOW_SIZE] =
                val;
              break;
            case IDX_SETTINGS_MAX_FRAME_SIZE:
              flags |= (1 << IDX_SETTINGS_MAX_FRAME_SIZE);
              settingsBuffer[IDX_SETTINGS_MAX_FRAME_SIZE] =
                val;
              break;
            case IDX_SETTINGS_MAX_CONCURRENT_STREAMS:
              flags |= (1 << IDX_SETTINGS_MAX_CONCURRENT_STREAMS);
              settingsBuffer[IDX_SETTINGS_MAX_CONCURRENT_STREAMS] = val;
              break;
            case IDX_SETTINGS_MAX_HEADER_LIST_SIZE:
              flags |= (1 << IDX_SETTINGS_MAX_HEADER_LIST_SIZE);
              settingsBuffer[IDX_SETTINGS_MAX_HEADER_LIST_SIZE] =
                val;
              break;
            case IDX_SETTINGS_ENABLE_CONNECT_PROTOCOL:
              flags |= (1 << IDX_SETTINGS_ENABLE_CONNECT_PROTOCOL);
              settingsBuffer[IDX_SETTINGS_ENABLE_CONNECT_PROTOCOL] = val;
              break;