Function startFilePipe

lib/internal/http2/core.js:2747–2760

(self, fd, offset, length)

}

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

  const pipe = new StreamPipe(handle, self[kHandle]);
  pipe.onunpipe = onFileUnpipe;
  pipe.start();

  // Exact length of the file doesn't matter here, since the
  // stream is closing anyway - just use 1 to signify that
  // a write does exist
  trackWriteState(self, 1);
}

function doSendFD(session, options, fd, headers, streamOptions, err, stat) {
  if (err) {