c# - 停止接收来自 SubscriptionClient 的消息

Question

如何停止从设置为事件驱动消息泵的订阅客户端接收消息？我目前有一些代码可以工作，但是当我连续运行两个测试时，它们会第二次中断。我相当确定消息仍在从我创建的第一个实例中的订阅中提取。

http://msdn.microsoft.com/en-us/library/dn130336.aspx

OnMessageOptions options = new OnMessageOptions();
            options.AutoComplete = true; // Indicates if the message-pump should call complete on messages after the callback has completed processing.

            options.MaxConcurrentCalls = 1; // Indicates the maximum number of concurrent calls to the callback the pump should initiate 

            options.ExceptionReceived += LogErrors; // Enables you to be notified of any errors encountered by the message pump

            // Start receiveing messages
            Client.OnMessage((receivedMessage) => // Initiates the message pump and callback is invoked for each message that is received. Calling Close() on the client will stop the pump.

                {
                    // Process the message
                    Trace.WriteLine("Processing", receivedMessage.SequenceNumber.ToString());
                }, options);

Answer 1

你需要做两件事。

首先，调用 subscriptionClient.Close()，这最终将(但不会立即)停止消息泵。

其次，在您的消息收到回调时，检查客户端是否已关闭，如下所示:

if (subscriptionClient.IsClosed)
    return;