swarm/network: debug trace code

swarm/network/stream/peer.go

@@ -137,6 +137,21 @@ func (p *Peer) SendOfferedHashes(s *server, f, t uint64) error {
 		}
 	}
 	s.currentBatch = hashes
+
+	///// TODO: remove debug code before merge
+
+	lenHashes := len(hashes)
+	if lenHashes%HashSize != 0 {
+		panic("wtf")
+	}
+
+	for i := 0; i < lenHashes; i += HashSize {
+		hash := hashes[i : i+HashSize]
+		log.Trace("offering hash", "ref", fmt.Sprintf("%x", hash), "peer", p.ID(), "stream", s.stream, "len", len(hashes), "from", from, "to", to)
+	}
+
+	//////
+
 	msg := &OfferedHashesMsg{
 		HandoverProof: proof,
 		Hashes:        hashes,

swarm/network/stream/syncer.go

@@ -25,6 +25,7 @@ import (
 	"github.com/ethereum/go-ethereum/metrics"
 	"github.com/ethereum/go-ethereum/p2p/enode"
 	"github.com/ethereum/go-ethereum/swarm/chunk"
+	"github.com/ethereum/go-ethereum/swarm/log"
 	"github.com/ethereum/go-ethereum/swarm/network/timeouts"
 	"github.com/ethereum/go-ethereum/swarm/storage"
 )
@@ -128,6 +129,7 @@ func (s *SwarmSyncerServer) SetNextBatch(from, to uint64) ([]byte, uint64, uint6
 				iterate = false
 				break
 			}
+			log.Trace("syncer add chunk", "ref", fmt.Sprintf("%x", d.Address[:]), "po", s.po, "from", from, "to", to)
 			batch = append(batch, d.Address[:]...)
 			// This is the most naive approach to label the chunk as synced
 			// allowing it to be garbage collected. A proper way requires