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-rw-r--r--whisper/envelope.go9
1 files changed, 5 insertions, 4 deletions
diff --git a/whisper/envelope.go b/whisper/envelope.go
index 0a817e26e..07762c300 100644
--- a/whisper/envelope.go
+++ b/whisper/envelope.go
@@ -109,16 +109,17 @@ func (self *Envelope) Hash() common.Hash {
return self.hash
}
-// rlpenv is an Envelope but is not an rlp.Decoder.
-// It is used for decoding because we need to
-type rlpenv Envelope
-
// DecodeRLP decodes an Envelope from an RLP data stream.
func (self *Envelope) DecodeRLP(s *rlp.Stream) error {
raw, err := s.Raw()
if err != nil {
return err
}
+ // The decoding of Envelope uses the struct fields but also needs
+ // to compute the hash of the whole RLP-encoded envelope. This
+ // type has the same structure as Envelope but is not an
+ // rlp.Decoder so we can reuse the Envelope struct definition.
+ type rlpenv Envelope
if err := rlp.DecodeBytes(raw, (*rlpenv)(self)); err != nil {
return err
}