WriteMessage를 WritePreparedMessage로 변경

wshandler/room.go

@@ -93,10 +93,14 @@ func (r *room) loop(ctx context.Context, conns *map[string]*wsconn) (normalEnd b
 			enc.Encode(ds)
 
 			for _, conn := range *conns {
-				r.sendMsgChan <- send_msg_queue_elem{
-					to:  conn,
-					mt:  websocket.TextMessage,
-					msg: buff.Bytes(),
+				pmsg, err := websocket.NewPreparedMessage(websocket.TextMessage, buff.Bytes())
+				if err != nil {
+					logger.Println("websocket.NewPreparedMessage failed :", err)
+				} else {
+					r.sendMsgChan <- send_msg_queue_elem{
+						to:   conn,
+						pmsg: pmsg,
+					}
 				}
 			}
 		}