hyperledger/fabric · error

error marshaling Envelope

Error message

error marshaling Envelope

What it means

Wrapper error from GetBytesEnvelope: proto.Marshal(env) failed while serializing the *common.Envelope. The underlying cause is attached by errors.Wrap and is most often the nil-message marshal failure. It prevents submitting transactions to the ordering service.

Source

Thrown at protoutil/proputils.go:222

	return bytes, errors.Wrap(err, "error unmarshalling Transaction")
}

// GetBytesPayload get the bytes of Payload from the message
func GetBytesPayload(payl *common.Payload) ([]byte, error) {
	if payl == nil {
		return nil, errors.New("error marshaling Payload: proto: Marshal called with nil")
	}
	bytes, err := proto.Marshal(payl)
	return bytes, errors.Wrap(err, "error marshaling Payload")
}

// GetBytesEnvelope get the bytes of Envelope from the message
func GetBytesEnvelope(env *common.Envelope) ([]byte, error) {
	if env == nil {
		return nil, errors.New("error marshaling Envelope: proto: Marshal called with nil")
	}
	bytes, err := proto.Marshal(env)
	return bytes, errors.Wrap(err, "error marshaling Envelope")
}

// GetActionFromEnvelope extracts a ChaincodeAction message from a
// serialized Envelope
// TODO: fix function name as per FAB-11831
func GetActionFromEnvelope(envBytes []byte) (*peer.ChaincodeAction, error) {
	env, err := GetEnvelopeFromBlock(envBytes)
	if err != nil {
		return nil, err
	}
	return GetActionFromEnvelopeMsg(env)
}

func GetActionFromEnvelopeMsg(env *common.Envelope) (*peer.ChaincodeAction, error) {
	payl, err := UnmarshalPayload(env.Payload)
	if err != nil {
		return nil, err
	}

View on GitHub (pinned to 2736b63f8f)

Solutions

1. Inspect the wrapped cause to distinguish nil-envelope from genuine marshal failure
2. Confirm the envelope Payload bytes were produced by GetBytesPayload without error and a signature was set
3. Add nil/empty checks before serialization in the calling test or SDK path

Example fix

// before
bytes, err := proto.Marshal(env)
return bytes, errors.Wrap(err, "error marshaling Envelope")
// after
if env == nil {
	return nil, errors.New("nil Envelope")
}
bytes, err := proto.Marshal(env)
return bytes, errors.Wrap(err, "error marshaling Envelope")

if env == nil || len(env.Payload) == 0 {
	return errors.New("envelope nil or payload empty")
}

func hasEnvelopeBytes(env *common.Envelope) bool {
	return env != nil && len(env.Payload) > 0
}

bytes, err := protoutil.GetBytesEnvelope(env)
if err != nil {
	return nil, fmt.Errorf("GetBytesEnvelope: %w (cause: %v)", err, errors.Unwrap(err))
}

When it happens

Trigger: proto.Marshal failing on an Envelope in GetBytesEnvelope, reached from TestInvoke and the deploy/invoke validation tests when an unsigned or nil envelope is passed.

Common situations: Test harnesses and CLI-like flows assembling envelopes from proposals where the signature step failed silently or the payload bytes were nil.

Related errors

• error marshaling SignatureHeader
• error unmarshalling Transaction
• error marshaling Payload
• error marshaling
• unmarshal failed

AI-assisted analysis of hyperledger/fabric@2736b63f8f (2026-09-04). Data as JSON: /api/errors/76087a1ddde9f8f5. Report an issue: GitHub.