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Merge pull request #1110 from eryx/master

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Fix panic error in concurrent calling with websocket.Connection.Emit() 

Former-commit-id: d9c1ab5ca244abded583885d418c556d5f9cf409
This commit is contained in:
Gerasimos (Makis) Maropoulos 2018-10-16 13:58:23 +03:00 committed by GitHub
commit 22ec02d53d
1 changed files with 8 additions and 5 deletions
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13
websocket/server.go
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@ -52,9 +52,9 @@ type (
func New(cfg Config) *Server {
cfg = cfg.Validate()
return &Server{
config: cfg,
connections: sync.Map{}, // ready-to-use, this is not necessary.
rooms: make(map[string][]string),
config: cfg,
connections: sync.Map{}, // ready-to-use, this is not necessary.
rooms: make(map[string][]string),
onConnectionListeners: make([]ConnectionFunc, 0),
upgrader: websocket.Upgrader{
HandshakeTimeout: cfg.HandshakeTimeout,
@ -352,9 +352,12 @@ func (s *Server) GetConnectionsByRoom(roomName string) []Connection {
// let's keep it unexported for the best.
func (s *Server) emitMessage(from, to string, data []byte) {
if to != All && to != Broadcast {
if s.rooms[to] != nil {
s.mu.RLock()
room := s.rooms[to]
s.mu.RUnlock()
if room != nil {
// it suppose to send the message to a specific room/or a user inside its own room
for _, connectionIDInsideRoom := range s.rooms[to] {
for _, connectionIDInsideRoom := range room {
if c, ok := s.getConnection(connectionIDInsideRoom); ok {
c.writeDefault(data) //send the message to the client(s)
} else {