}

	p.wrMu.Lock() // Ensure entirety of b is written together
	defer p.wrMu.Unlock()
	for once := true; once || len(b) > 0; once = false {
		select {
		case p.wrTx <- b:
			nw := <-p.wrRx
			b = b[nw:]
			n += nw
		case <-p.localDone:
			return n, io.ErrClosedPipe
		case <-p.remoteDone:
			return n, io.ErrClosedPipe
		case <-p.writeDeadline.wait():
			return n, os.ErrDeadlineExceeded
		}
	}

		}
		nr, err := src.Read(buf)
		log.Debugf("read %v/%v", nr, err)
		if nr > 0 { // before dealing with the read error
			nw, ew := dst.Write(buf[0:nr])
			log.Debugf("write %v/%v", nw, ew)
			if f, ok := dst.(http.Flusher); ok {
				f.Flush()
			}
			if nr != nw { // Should not happen
				ew = io.ErrShortWrite
			}
			if ew != nil {
				return
			}
		}
		if err != nil {

	}
	return off + (int64(len(b.funcs)) * 4)
}

func (b *CoverageMetaDataBuilder) emitFunc(w io.WriteSeeker, off int64, f funcDesc) (int64, error) {
	ew := len(f.encoded)
	if nw, err := w.Write(f.encoded); err != nil {
		return 0, err
	} else if ew != nw {
		return 0, fmt.Errorf("short write emitting coverage meta-data")
	}
	return off + int64(ew), nil
}

func (b *CoverageMetaDataBuilder) reportWriteError(err error) {

func (b *EndpointBuilder) selectNetworkGateways(nw network.ID, c cluster.ID) []model.NetworkGateway {
	// Get the gateways for this network+cluster combination.
	gws := b.gateways().GatewaysForNetworkAndCluster(nw, c)
	if len(gws) == 0 {
		// No match for network+cluster, just match the network.
		gws = b.gateways().GatewaysForNetwork(nw)
	}
	return gws
}

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00000340  0b 0c 6c 28 0a 71 51 dc  10 8f 85 fd 97 0f c4 84  |..l(.qQ.........|

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00000110  a7 94 25 8e 77 1e 69 20  41 6c c0 9d 26 15 03 01  |..%.w.i Al..&...|