SignalR中打开的连接列表？

2 回答

• 1

  您可以将用户的ID存储在“已连接”上，并在断开连接时将其删除 . 请参阅 this is only an example 使用数据库来保留连接的ID

  protected Task OnConnected(IRequest request, string connectionId){
      var context=new dbContext();
      context.Connections.Add(connectionId);
      context.Save();
    }
    protected Task OnDisconnected(IRequest request, string connectionId){        
      var context=new dbContext();
      var id=context.Connections.FirstOrDefault(e=>e.connectionId==connectionId);
      context.Connections.Remove(id);
      context.Save();
    }
  

  然后，您需要访问连接ID列表的所有位置，请求您的数据库 .

  回复于 2024-04-26T15:52:07+08:00
• 2

  我还没有找到任何直接的方法 .

  到目前为止我得到的最好的是遵循教程 - USERS BY CONNECTIONS IN SIGNALR ，您可以在链接中找到更多代码，我已将其简化为基本理解 .

  public void Register(HubClientPayload payload, string connectionId)
  {       
      lock (_lock)
      {
          List<String> connections;
          if (_registeredClients.TryGetValue(payload.UniqueID, out connections))
          {
               if (!connections.Any(connection => connectionID == connection))
               {
                   connections.Add(connectionId);
               }
          }
          else
          {
               _registeredClients[payload.UniqueID] = new List<string> { connectionId };
          }
      }        
  }
  

  和

  public Task Disconnect(string connectionId)
  {       
      lock (_lock)
      {
           var connections = _registeredClients.FirstOrDefault(c => c.Value.Any(connection => connection == connectionId));     
           // if we are tracking a client with this connection remove it
           if (!CollectionUtil.IsNullOrEmpty(connections.Value))
           {
              connections.Value.Remove(connectionId);     
              // if there are no connections for the client, remove the client from the tracking dictionary
              if (CollectionUtil.IsNullOrEmpty(connections.Value))
              {
                  _registeredClients.Remove(connections.Key);
              }
           }                 
      return null;
  }
  

  也，

  public Task Reconnect(string connectionId)
  {
     Context.Clients[connectionId].reRegister();       
     return null;
  }
  

  回复于 2024-04-26T15:52:07+08:00