Function doSendFD

lib/internal/http2/core.js:2762–2797

(session, options, fd, headers, streamOptions, err, stat)

}

function doSendFD(session, options, fd, headers, streamOptions, err, stat) {
  if (err) {
    this.destroy(err);
    return;
  }

  // This can happen if the stream is destroyed or closed while we are waiting
  // for the file descriptor to be opened or the stat call to be completed.
  // In either case, we do not want to continue because the we are shutting
  // down and should not attempt to send any data.
  if (this.destroyed || this.closed) {
    this.destroy(new ERR_HTTP2_INVALID_STREAM());
    return;
  }

  const statOptions = {
    offset: options.offset !== undefined ? options.offset : 0,
    length: options.length !== undefined ? options.length : -1,
  };

  // options.statCheck is a user-provided function that can be used to
  // verify stat values, override or set headers, or even cancel the
  // response operation. If statCheck explicitly returns false, the
  // response is canceled. The user code may also send a separate type
  // of response so check again for the HEADERS_SENT flag
  if ((typeof options.statCheck === 'function' &&
       options.statCheck.call(this, stat, headers, statOptions) === false) ||
       (this[kState].flags & STREAM_FLAGS_HEADERS_SENT)) {
    return;
  }

  processRespondWithFD(this, fd, headers,
                       statOptions.offset | 0,
                       statOptions.length | 0,
                       streamOptions);
}

function doSendFileFD(session, options, fd, headers, streamOptions, err, stat) {
  const onError = options.onError;