与SignalR广播消息时忽略客户端 [英] Ignoring a client when broadcasting a message with SignalR

问题描述

我想忽略作出广播消息我的web应用程序请求的客户端。我似乎可以做到这一点的唯一方法是通过缓存当前用户的的ConnectionId：

I want to ignore the client that made the request to broadcast the message my web app. The only way I can seem to do this is by caching the connectionId of the current user:

public class BroadcastHub : Hub
{

    public override Task OnConnected()
    {
        System.Runtime.Caching.MemoryCache.Default.Set(HttpContext.Current.User.Identity.Name + "-connectionId", Context.ConnectionId, new CacheItemPolicy() { Priority = CacheItemPriority.Default, SlidingExpiration = TimeSpan.FromHours(1), AbsoluteExpiration = MemoryCache.InfiniteAbsoluteExpiration });

        return base.OnConnected();
    }

    public override Task OnReconnected()
    {
        System.Runtime.Caching.MemoryCache.Default.Set(HttpContext.Current.User.Identity.Name + "-connectionId", Context.ConnectionId, new CacheItemPolicy() { Priority = CacheItemPriority.Default, SlidingExpiration = TimeSpan.FromHours(1), AbsoluteExpiration = MemoryCache.InfiniteAbsoluteExpiration });

        return base.OnReconnected();
    }

}

这可以让我做的控制器的操作方法如下：

This allows me to do the following in the controller action method:

        IHubContext hubContext = GlobalHost.ConnectionManager.GetHubContext<BroadcastHub>();
        hubContext.Clients.AllExcept((string)MemoryCache.Default.Get(HttpContext.Current.User.Identity.Name + "-connectionId")).sendAddedPasswordDetail(addedPassword);

这个方法似乎工作... ...但我想这可能是做事的方式不对。有没有更好的办法忽略请求的客户端？

This method seems to work... but I'm thinking it might be the wrong way of doing things. Is there a better way to ignore the requesting client?

推荐答案

有是允许这个特定异常的特定属性，

There is a specific property that allows this particular exception,

hubContext.Clients.Others.YourMethodHere

您可以看到它使用的这里。

编辑：
按照注释中的讨论，其他使用时，无法使用 GlobalHost.ConnectionManager.GetHubContext＆LT; T＆GT;

您要么需要继续使用当前的方法或找到一种方法来委托该活动到 BroadcastHub 有机会获得其他。

You will either need to continue using your current method or find a way to delegate this activity to the BroadcastHub to have access to Others.

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