X move handshake do to neonet

go/neo/neonet/newlink.go

@@ -185,6 +185,13 @@ func _handshakeServer(ctx context.Context, conn net.Conn, version uint32) (enc p
 	return peerEnc, rxbuf, nil
 }
 
+// handshake hello:
+//
+// - 00 00 00 <ver>	for 'N' encoding, and
+// - 92 c4 03 NEO ...	for 'M' encoding (= msgpack of (b"NEO", <ver>))
+//
+// the first byte is different from TLS handshake (0x16).
+
 func txHello(errctx string, conn net.Conn, version uint32, enc proto.Encoding) (err error) {
 	defer xerr.Context(&err, errctx)
 

go/neo/proto/proto.go

@@ -76,8 +76,7 @@ import (
 
 const (
 	// The protocol version must be increased whenever upgrading a node may require
-	// to upgrade other nodes. It is encoded as a 4-bytes big-endian integer and
-	// the high order byte 0 is different from TLS Handshake (0x16).	XXX update for msgpack
+	// to upgrade other nodes.
 	Version = 6
 
 	// length of packet header in 'N'-encoding