48 lines
945 B
Go
48 lines
945 B
Go
package handlers
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import (
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"log"
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"net/http"
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"aroll/ws"
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gws "github.com/gorilla/websocket"
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)
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var upgrader = gws.Upgrader{
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ReadBufferSize: 1024,
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WriteBufferSize: 4096,
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CheckOrigin: func(r *http.Request) bool { return true },
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}
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func WSHandler(hub *ws.Hub) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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conn, err := upgrader.Upgrade(w, r, nil)
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if err != nil {
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log.Printf("ws upgrade: %v", err)
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return
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}
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client := &ws.Client{Send: make(chan []byte, 256)}
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hub.Register <- client
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// Writer goroutine: pumps messages from hub → WebSocket
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go func() {
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defer conn.Close()
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for msg := range client.Send {
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if err := conn.WriteMessage(gws.TextMessage, msg); err != nil {
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return
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}
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}
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}()
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// Reader loop: keeps the connection alive and detects close frames
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for {
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if _, _, err := conn.ReadMessage(); err != nil {
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break
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}
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}
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hub.Unregister <- client
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}
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}
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