Method goaway

lib/internal/http2/core.js:1588–1604

(code = NGHTTP2_NO_ERROR, lastStreamID = 0, opaqueData)

  // session with the notable exception that new incoming streams will
  // be rejected automatically.
  goaway(code = NGHTTP2_NO_ERROR, lastStreamID = 0, opaqueData) {
    if (this.destroyed)
      throw new ERR_HTTP2_INVALID_SESSION();

    if (opaqueData !== undefined) {
      validateBuffer(opaqueData, 'opaqueData');
    }
    validateNumber(code, 'code');
    validateNumber(lastStreamID, 'lastStreamID');

    const goawayFn = submitGoaway.bind(this, code, lastStreamID, opaqueData);
    if (this.connecting) {
      this.once('connect', goawayFn);
      return;
    }
    goawayFn();
  }

  // Destroy the Http2Session, making it no longer usable and cancelling
  // any pending activity.