retrieval: Make types more spec complaiant

lib/cborrpc/rpc.go

@@ -1,16 +1,27 @@
 package cborrpc
 
 import (
+	"encoding/hex"
 	"io"
 
 	cbor "github.com/ipfs/go-ipld-cbor"
+	logging "github.com/ipfs/go-log"
 	cbg "github.com/whyrusleeping/cbor-gen"
 )
 
-const MessageSizeLimit = 1 << 20
+var log = logging.Logger("cborrrpc")
+
+const Debug = false
+
+func init() {
+	if Debug {
+		log.Warn("CBOR-RPC Debugging enabled")
+	}
+}
 
 func WriteCborRPC(w io.Writer, obj interface{}) error {
 	if m, ok := obj.(cbg.CBORMarshaler); ok {
+		// TODO: impl debug
 		return m.MarshalCBOR(w)
 	}
 	data, err := cbor.DumpObject(obj)
@@ -18,6 +29,10 @@ func WriteCborRPC(w io.Writer, obj interface{}) error {
 		return err
 	}
 
+	if Debug {
+		log.Infof("> %s", hex.EncodeToString(data))
+	}
+
 	_, err = w.Write(data)
 	return err
 }