hyperledger/fabric · error

receive from chaincode support stream failed

Error message

receive from chaincode support stream failed

What it means

Returned by Handler.ProcessStream when the gRPC chat stream Recv returns an error other than EOF while reading from the chaincode runtime. It wraps the transport-level failure (connection reset, stream broken) that ends the chaincode support stream.

Source

Thrown at core/chaincode/handler.go:446

	}
	msgAvail := make(chan *recvMsg, 1)

	receiveMessage := func() {
		in, err := h.chatStream.Recv()
		msgAvail <- &recvMsg{in, err}
	}

	go receiveMessage()
	for {
		select {
		case rmsg := <-msgAvail:
			switch {
			// Defer the deregistering of the this handler.
			case rmsg.err == io.EOF:
				chaincodeLogger.Debugf("received EOF, ending chaincode support stream: %s", rmsg.err)
				return rmsg.err
			case rmsg.err != nil:
				err := errors.Wrap(rmsg.err, "receive from chaincode support stream failed")
				chaincodeLogger.Debugf("%+v", err)
				return err
			case rmsg.msg == nil:
				err := errors.New("received nil message, ending chaincode support stream")
				chaincodeLogger.Debugf("%+v", err)
				return err
			default:
				err := h.handleMessage(rmsg.msg)
				if err != nil {
					err = errors.WithMessage(err, "error handling message, ending stream")
					chaincodeLogger.Errorf("[%s] %+v", shorttxid(rmsg.msg.Txid), err)
					return err
				}

				go receiveMessage()
			}

		case sendErr := <-h.errChan:

View on GitHub (pinned to 2736b63f8f)

Solutions

1. Check the chaincode container/process logs for a crash and restart it
2. Verify network/timeout settings between peer and chaincode if it recurs

When it happens

Trigger: Thrown at core/chaincode/handler.go:446 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of hyperledger/fabric@2736b63f8f (2026-09-04). Data as JSON: /api/errors/29eeea7d13d5268c. Report an issue: GitHub.