grafana/k6 · error

canceled by client (k6)

Error message

canceled by client (k6)

What it means

Error "canceled by client (k6)" thrown in grafana/k6.

Source

Thrown at internal/lib/netext/grpcext/stream.go:30

	"google.golang.org/protobuf/encoding/protojson"
	"google.golang.org/protobuf/reflect/protoreflect"
	"google.golang.org/protobuf/types/dynamicpb"
	"google.golang.org/protobuf/types/known/emptypb"
)

// Stream is the wrapper around the grpc.ClientStream
// with some handy methods.
type Stream struct {
	method                 string
	methodDescriptor       protoreflect.MethodDescriptor
	discardResponseMessage bool
	raw                    grpc.ClientStream
	marshaler              protojson.MarshalOptions
	unmarshaler            protojson.UnmarshalOptions
}

// ErrCanceled canceled by client (k6)
var ErrCanceled = errors.New("canceled by client (k6)")

// ReceiveConverted receives a converted message from the stream
// if the stream has been closed successfully, it returns io.EOF
// if the stream has been cancelled, it returns ErrCanceled
func (s *Stream) ReceiveConverted() (any, error) {
	raw, err := s.receive()
	if err != nil && !errors.Is(err, io.EOF) {
		return nil, err
	}

	if s.discardResponseMessage {
		return struct{}{}, err
	}

	msg, errConv := convert(s.marshaler, raw)
	if errConv != nil {
		return nil, errConv
	}

View on GitHub (pinned to 93accf6570)

When it happens

Trigger: Thrown at internal/lib/netext/grpcext/stream.go:30 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of grafana/k6@93accf6570 (2026-08-15). Data as JSON: /api/errors/9c733a52ab6aa4ef. Report an issue: GitHub.