user conn map copy

internal/msg_gateway/gate/ws_server.go

@@ -259,7 +259,11 @@ func (ws *WServer) getSingleUserAllConn(uid string) map[string]*UserConn {
 	rwLock.RLock()
 	defer rwLock.RUnlock()
 	if connMap, ok := ws.wsUserToConn[uid]; ok {
-		return connMap
+		newConnMap := make(map[int]*UserConn)
+		for k, v := range connMap {
+			newConnMap[k] = v
+		}
+		return newConnMap
 	}
 	return nil
 }