Function processRespondWithFD

lib/internal/http2/core.js:2709–2745

(self, fd, headers, offset = 0, length = -1,
                              streamOptions = 0)

}

function processRespondWithFD(self, fd, headers, offset = 0, length = -1,
                              streamOptions = 0) {
  const state = self[kState];
  state.flags |= STREAM_FLAGS_HEADERS_SENT;

  let headersList;
  try {
    headersList = buildNgHeaderString(
      headers,
      assertValidPseudoHeaderResponse,
      self.session[kStrictSingleValueFields],
    );
  } catch (err) {
    if (self.ownsFd)
      tryClose(fd);
    self.destroy(err);
    return;
  }
  self[kSentHeaders] = headers;

  // Close the writable side of the stream, but only as far as the writable
  // stream implementation is concerned.
  self._final = null;
  self.end();

  const ret = self[kHandle].respond(headersList, streamOptions);

  if (ret < 0) {
    if (self.ownsFd)
      tryClose(fd);
    self.destroy(new NghttpError(ret));
    return;
  }

  defaultTriggerAsyncIdScope(self[async_id_symbol], startFilePipe,
                             self, fd, offset, length);
}

function startFilePipe(self, fd, offset, length) {
  const handle = new FileHandle(fd, offset, length);