c# – asp.net 5 / mvc 6中的PushStreamContent无效

我的问题是我无法让PushStreamContent工作.

当我使用这个api控制器时 – 结果将以json格式结束,而不是作为流：

[Route("api/[controller]")]
public class EventsController : Controller
{
    private static readonly ConcurrentQueue<StreamWriter> s_streamWriter = new ConcurrentQueue<StreamWriter>();

   [HttpGet]
    public HttpResponseMessage Get(HttpRequestMessage request)
    {
         HttpResponseMessage response = request.CreateResponse();
        response.Content = new PushStreamContent(new Action<Stream,HttpContent,TransportContext>(WriteToStream),"text/event-stream");
        return response;
    }

    private void WriteToStream(Stream outputStream,HttpContent headers,TransportContext context)
    {
        var streamWriter = new StreamWriter(outputStream) {AutoFlush = true};
        s_streamWriter.Enqueue(streamWriter);
    }
}

如果我更改控制器操作以返回任务并在类MyPushStreamResult中包装PushStreamContent – 像这样：

[HttpGet]
public async Task<IActionResult> Get(HttpRequestMessage request)
{
    var stream = new PushStreamContent(new Action<Stream,"text/event-stream");
    return new MyPushStreamResult(stream,"text/event-stream");
}

public class MyPushStreamResult : ActionResult
{
    public string ContentType { get; private set; }
    public PushStreamContent Stream { get; private set; }
    public MyPushStreamResult(PushStreamContent stream,string contentType)
    {
        Stream = stream;
        ContentType = contentType;
    }
    public override async Task ExecuteResultAsync(ActionContext context)
    {
        var response = context.HttpContext.Response;
        response.ContentType = ContentType;
        await Stream.CopyToAsync(response.Body);
    }
}

对我的控制器操作的请求现在返回一个流,但是在服务器端关闭流或包含大量数据之前,流不会刷新.当我将数据推送到PushStreamContent输出流时,我在每次文本写入后刷新,但我想flush不在response.Body流上.

我错过了什么？使用asp.net 5结构找不到任何样本.