Wcf – Using Windows Services to process MSMQ messages via WCF

msmqmsmq-wcfwcf

We have a solution where we are picking the messages using Windows Service.

The Windows Service fires every after 2 minutes and retrieves the MSMQ message to pass it to a Web Service.

Can I create a WCF service which will automatically picks up the messages from MSMQ Queue?
Can I avoid Windows Service by using WCF Service if it support auto invocation?

Best Answer

Q1: you can automatically pick up messages from MSMQ, you will need to look into the netmsmqbinding, there are some design considerations that you have to think about though, if you are used to the native MSMQ, you know that you have the ability to peek at the messages. But when you use WCF, you loose that ability to peek. WCF will intercept the messages in MSMQ and you are responsible for keeping your WCF service and the peeking app in synch. You will also need to look into whether you need transactional or non-transactional queues and you will have to modify your binding based on that.

Q2: You will need to host the WCF service in windows service or in IIS7. if you host in IIS7 look into enabling MSMQ WAS listener

Here is a nice article: http://blogs.msdn.com/tomholl/archive/2008/07/12/msmq-wcf-and-iis-getting-them-to-play-nice-part-1.aspx

Related Solutions

.net – How to handle message failure in MSMQ bindings for WCF

I think with MSMQ (avaiable only on Vista) you might be able to to do like this:

<bindings>
    <netMsmqBinding>
        <binding name="PosionMessageHandling"
             receiveRetryCount="3"
             retryCycleDelay="00:05:00"
             maxRetryCycles="3"
             receiveErrorHandling="Move" />
    </netMsmqBinding>
</bindings>

WCF will immediately retry for ReceiveRetryCount times after the first call failure. After the batch has failed the message is moved to the retry queue. After a delay of RetryCycleDelay minute, the message moved from the retry queue to the endpoint queue and the batch is retried. This will be repeated MaxRetryCycle time. If all that fails the message is handled according to receiveErrorHandling which can be move (to poison queue), reject, drop or fault

By the way a good text about WCF and MSMQ is the chapther 9 of Progammig WCF book from Juval Lowy

WCF MSMQ callback function

you can use duplex communication with msmq but not natively, take a look to my article

Best Answer

Related Solutions

.net – How to handle message failure in MSMQ bindings for WCF

WCF MSMQ callback function

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