msmq

问题 I am attempting this: using System.Diagnostics; // ... var queueCounter = new PerformanceCounter( "MSMQ Queue", "Messages in Queue", @"machinename\private$\testqueue2"); Console.WriteLine( "Queue contains {0} messages", queueCounter.NextValue().ToString()); Which came from this post: Is there a way to check how many messages are in a MSMQ Queue? There is mention of this same error, but no resolution when using PerformanceCounter. I also found mention here: Performance Counter - System

问题 I am using an open source .Net library which uses MSMQ underneath. After about a week or 2, the service slows down (not timed exactly but general guess). It appears that what is happening is messages from MSMQ are only being read exactly once every 10 seconds. Normally, they are read instantly. So they will be read at T+10sec, T+20sec, T+30sec, etc. independent of when the message was sent (i.e. sometimes it takes 3 seconds for the message to be read, other times 9 seconds). The current way I

问题 Whats the best way to get all the messages currently on a queue to process? We have a queue with a large number of very small messages, what I would like to do is read all the current messages off and then send them through a thread pool for processing. I can't seem to find any good resource which will show me how i can create a simple method to return an IEnnumerable for example Thanks 回答1: Although I agree with Nick that the queue's purpose is more for FIFO style processing, and ArsenMkrt's

问题 I have two windows services which use NserviceBus. One writes messages to the queue and the other reads from it and do some processing. All the queues are transactional and the NserviceBus endpoints are configured as below. .IsTransactional(true) .IsolationLevel(IsolationLevel.ReadCommitted) .MsmqTransport() .RunTimeoutManager() .UseInMemoryTimeoutPersister() .MsmqSubscriptionStorage() .DisableRavenInstall() .JsonSerializer() The issue is when a large amount of messages (170,000+) are queued,

问题 The System.Messaging.MessageQueue class does not provide a way to set ownership of queue. How do I programmatically set the owner of a MSMQ message queue? 回答1: The short answer is to p/invoke a call to the windows api function MQSetQueueSecurity void SetOwner(MessageQueue queue, byte[] sid, bool ownerDefaulted = false) { var securityDescriptor = new Win32.SECURITY_DESCRIPTOR(); if (!Win32.InitializeSecurityDescriptor(securityDescriptor, Win32.SECURITY_DESCRIPTOR_REVISION)) throw new

问题 I'm new to messaging and a little unclear as to whether it is possible for MSMQ to deliver out-of-order messages for transactional queues. I suppose it must be because if a message is not processed correctly (and since we will be using multiple "competing consumers"), then other consumers could continue to process messages while the failed message is placed back on queue. Just can't seem to find a black-and-white answer anywhere on this. 回答1: Negative black-and-white answer are hard to find(

问题 MSMQ maintains a type of queue called "Outgoing Queues". These queues are used by the MSMQ service to hold messages destined for servers that it cannot contact when the message is generated. These are special, temporary queues that are separate from the normal Public and Private queues. I've recently encountered a scenario where some messages destined for the local system (i.e. the same computer that generated the message) end up in one of the "Outgoing Queues". When drilling into the

问题 I have a website that uses MSMQ on a remote server to queue pending e-mails. I am able to write the message to the queue, and then call dispose on the queue. The queue still gets the message, but sometime later the GC comes along and tries to clean up and it causes IIS to crash. This is what I see in the event log: Exception: System.NullReferenceException Message: Object reference not set to an instance of an object. StackTrace: at System.Messaging.Cursor.Finalize() This code has been running

问题 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. Closed 6 years ago . I am sending a message to a pretty standard message queue that I have created on my machine running Windows Server 2008 R2. QueueName: directionsTest

问题 I'm working on a RESTfull web service that does the following: On POST request, it starts a long running task. It queues up a message for MSMQ, which is processed in windows service hosted applicaiton. It returns HTTP status code 202 Accepted along with id of the job we queued up. Client application continously polls the service (with GET) with id of the job we just queued up. When the MSMQ client is finished with the task, it should return the result of the operation. If not, it will return