@@ -245,26 +245,39 @@ func (r *Room) HandleConn(ctx context.Context, playerID uuid.UUID, nickname stri
g, ctx := errgroup.WithContext(ctx)
- r.mu.Lock()
- r.players[playerID] = func(s protocol.ServerNote) {
- if ctx.Err() != nil {
- return
+ setup := func() (success bool) {
+ r.mu.Lock()
+ defer r.mu.Unlock()
+
+ if _, ok := r.players[playerID]; ok {
+ ctxlog.Warn(ctx, "client with this ID already exists")
+ return false
}
- // It's not safe to start more group goroutines concurrently; just use a regular
- // goroutine and hope that errors here will be reflected later via ping/receive failures.
- go func() {
- ctx, cancel := context.WithTimeout(ctx, time.Second)
- defer cancel()
- if err := wsjson.Write(ctx, c, &s); err != nil {
+ r.players[playerID] = func(s protocol.ServerNote) {
+ if ctx.Err() != nil {
return
}
- metricSent.Inc()
- }()
+
+ // It's not safe to start more group goroutines concurrently; just use a regular
+ // goroutine and hope that errors here will be reflected later via ping/receive failures.
+ go func() {
+ ctx, cancel := context.WithTimeout(ctx, time.Second)
+ defer cancel()
+ if err := wsjson.Write(ctx, c, &s); err != nil {
+ return
+ }
+ metricSent.Inc()
+ }()
+ }
+ r.room.AddPlayer(playerID, nickname)
+ r.sendAll()
+ return true
+ }
+
+ if !setup() {
+ return
}
- r.room.AddPlayer(playerID, nickname)
- r.sendAll()
- r.mu.Unlock()
defer func() {
r.mu.Lock()