Пример #1
0
func timeoutWriteHeader(w *xdr.Writer, hdr header) {
	// This tries to write a message header to w, but times out after a while.
	// This is useful because in testing, with a PipeWriter, it will block
	// forever if the other side isn't reading any more. On the other hand we
	// can't just "go" it into the background, because if the other side is
	// still there we should wait for the write to complete. Yay.

	var buf [8]byte // header and message length
	binary.BigEndian.PutUint32(buf[:], encodeHeader(hdr))
	binary.BigEndian.PutUint32(buf[4:], 0) // zero message length, explicitly

	done := make(chan struct{})
	go func() {
		w.WriteRaw(buf[:])
		l.Infoln("write completed")
		close(done)
	}()
	select {
	case <-done:
	case <-time.After(250 * time.Millisecond):
	}
}
Пример #2
0
func (u *Opaque) encodeXDR(w *xdr.Writer) (int, error) {
	return w.WriteRaw(u[:])
}