fix: fixing memory leak from unbuffered channel

go.mod

@@ -4,4 +4,4 @@ go 1.24.5
 
 require github.com/gorilla/websocket v1.5.3
 
-require git.neurocipta.com/rogerferdinan/custom-rwmutex v1.0.0 // indirect
+require git.neurocipta.com/rogerferdinan/custom-rwmutex v1.0.0

internal/hub.go

@@ -23,9 +23,9 @@ type Client struct {
 func NewClient(conn *websocket.Conn, subscribedPath string) *Client {
 	return &Client{
 		Conn:           conn,
-		Send:           make(chan []byte, 64),
+		Send:           make(chan []byte, 2),
 		SubscribedPath: subscribedPath,
-		done:           make(chan struct{}),
+		done:           make(chan struct{}, 1),
 	}
 }
 
@@ -38,10 +38,10 @@ type Hub struct {
 
 func NewHub() *Hub {
 	return &Hub{
-		Broadcast:  make(chan []byte),
-		Register:   make(chan *Client),
-		Unregister: make(chan *Client),
-		Clients:    make(map[*Client]bool),
+		Broadcast:  make(chan []byte, 1),
+		Register:   make(chan *Client, 1),
+		Unregister: make(chan *Client, 1),
+		Clients:    make(map[*Client]bool, 1),
 	}
 }
 
@@ -117,7 +117,7 @@ func ReadPump(c *Client, h *Hub) {
 	for {
 		messageType, message, err := c.Conn.ReadMessage()
 		if err != nil {
-			if !websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway, websocket.CloseAbnormalClosure) {
+			if websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway, websocket.CloseAbnormalClosure) {
 				log.Printf("WebSocket error: %v", err)
 			}
 			break

v1/client/client.go

@@ -68,10 +68,10 @@ func (sm *SafeMap[K, V]) Len() int {
 type MessageType uint
 
 const (
-	MessageTypeText  MessageType = iota + 1
-	MessageTypePing  MessageType = iota
-	MessageTypePong  MessageType = iota
-	MessageTypeClose MessageType = iota
+	MessageTypeText  MessageType = websocket.TextMessage
+	MessageTypePing  MessageType = websocket.PingMessage
+	MessageTypePong  MessageType = websocket.PongMessage
+	MessageTypeClose MessageType = websocket.CloseMessage
 )
 
 type Message struct {
@@ -155,7 +155,7 @@ func (b *SafeWebsocketClientBuilder) Build(ctx context.Context) (*SafeWebsocketC
 		reconnectCh: make(chan struct{}, 1),
 		isConnected: false,
 		doneMap:     NewSafeMap[string, chan struct{}](),
-		writeChan:   make(chan Message),
+		writeChan:   make(chan Message, 1),
 	}
 
 	if b.authenticateFn != nil {
@@ -193,6 +193,7 @@ type SafeWebsocketClient struct {
 	authenticateFn func(*SafeWebsocketClient) error
 
 	writeChan chan Message
+	pongChan  chan error
 }
 
 func (wsClient *SafeWebsocketClient) connect() error {
@@ -220,19 +221,6 @@ func (wsClient *SafeWebsocketClient) connect() error {
 		return fmt.Errorf("failed to connect to %s: %w", wsClient.baseHost, err)
 	}
 
-	conn.SetPingHandler(func(pingData string) error {
-		if err := conn.WriteMessage(websocket.PongMessage, []byte(pingData)); err != nil {
-			if err == websocket.ErrCloseSent {
-				return nil
-			}
-			if netErr, ok := err.(interface{ Timeout() bool }); ok && netErr.Timeout() {
-				return nil
-			}
-			return err
-		}
-		return nil
-	})
-
 	pingCtx, pingCancel := context.WithCancel(context.Background())
 	wsClient.mu.WriteHandler(func() error {
 		wsClient.cancelFuncs = append(wsClient.cancelFuncs, pingCancel)
@@ -280,6 +268,9 @@ func (wsClient *SafeWebsocketClient) connect() error {
 				if err := c.WriteMessage(int(data.MessageType), data.Data); err != nil {
 					log.Printf("error on write message: %v\n", err)
 					wsClient.triggerReconnect()
+					if data.MessageType == MessageTypePong {
+						wsClient.pongChan <- err
+					}
 					return
 				}
 			}
@@ -336,6 +327,20 @@ func (wsClient *SafeWebsocketClient) connect() error {
 		}
 	}()
 
+	conn.SetPingHandler(func(pingData string) error {
+		wsClient.writeChan <- Message{
+			MessageType: MessageTypePong,
+			Data:        []byte(pingData),
+		}
+
+		select {
+		case err := <-wsClient.pongChan:
+			return err
+		default:
+		}
+		return nil
+	})
+
 	return nil
 }
 
@@ -351,7 +356,7 @@ func (wsClient *SafeWebsocketClient) startPingTicker(ctx context.Context) {
 		case <-ticker.C:
 			wsClient.writeChan <- Message{
 				MessageType: websocket.PingMessage,
-				Data:        nil,
+				Data:        []byte{},
 			}
 		}
 	}
@@ -420,7 +425,7 @@ func (wsClient *SafeWebsocketClient) reconnectHandler() {
 }
 
 func (wsClient *SafeWebsocketClient) ReconnectChannel() <-chan struct{} {
-	reconnectCh := make(chan struct{})
+	reconnectCh := make(chan struct{}, 1)
 	wsClient.mu.WriteHandler(func() error {
 		wsClient.reconnectChans = append(wsClient.reconnectChans, reconnectCh)
 		return nil