Motley Queüe

Should your app be using System.Messaging or WCF Queuing ? We’ve all seen these kind of technology comparisons before — someone extols the virtues of two solutions, highlights the pros and cons in certain situations, and ultimately answers the comparison...

Two New Operating Systems Bring Two New, Exciting Ways to Install (or Uninstall) MSMQ This week we talk about automated installation (and new in Vista and Windows Server 2008, uninstallation) of MSMQ via unattend files. The Optional Component setup...

There are a few differences in MSMQ and IIS functionality between Windows Server 2003 (MSMQ v3.0) and Windows Server 2008 (MSMQ v4.0). This means that there are a few configuration changes you may have to make to your MSMQ system post-upgrade to make...

Windows Server 2008 R2 introduces a new feature in Active Directory, the Active Directory Recycle Bin. When MSMQ is installed on a domain-joined machine with the MSMQ directory integration feature installed, it makes use of Active Directory objects, particularly...

As part of a general security sweep of Vista and Windows Server 2008, there was a review of the cryptographic algorithms used anywhere within the products. Some of the older ones were deprecated as being too weak to provide meaningful security anymore...

Hello, and welcome to Motley Queüe ! My name is James Birdsall, and I'm a member of the Microsoft Message Queuing (MSMQ) test team at Microsoft. Over the next couple of weeks I'll be covering these topics: What Is Queuing? There are many ways for...

Patrick Toolis of the MSMQ test team has written a great whitepaper on using LINQ (Language-Integrated Query) with MSMQ via system.messaging. It's twelve pages long with a number of screenshots and diagrams, so I'm not going to try to post it directly...

Let’s say you want to install all components except Downlevel Client Support on a Windows Server 2003 computer. You could run the following command: sysocmgr /i:sysoc.inf /x /u:unattend.ini with following unattend.ini file: [Version] Signature...

An issue that frequently causes confusion for MSMQ users is that of message encryption. A message is marked for encryption and sent off, but when it shows up in the destination queue the contents are plainly viewable in clear text. What’s going on here...

Windows Server 2008 has a nifty new command line tool called ServerManagerCmd.exe which makes installing and uninstalling Optional Components and Server Roles quick and easy. It is not related to the Package Manager/OCSetup family of tools, so although...

Edited on 4/11/2008 to corrected the build numbers in the examples. The correct build number is 6.0.6000.16386. Vista introduces a new tool for installing and removing Optional Components, called OCSetup.exe. For those of you familiar with Package...

Hello and welcome back from the holidays! I will get around to describing how to use acknowledgements and deadlettering soon, but right now, those of you who are already using acknowledgements should know that there is a slight behavior change coming...

MSMQ has supported receiving messages from queues hosted on other machines ("remote receive") since the beginning. However, remote receives within a transaction have not been supported. That's a significant detail, and has generated a lot of customer...

Timeouts, acknowledgements, and deadlettering, working together, will help you deal with not just the situation where a remote queue doesn't exist, but all the other things which could go wrong along a message's way from sender to destination. MSMQ...

MSMQ provides several sets of performance counters which query the state of the service and other objects (sessions, queues, etc.) and can be used in various monitoring systems. There are a few KB articles and blog entries explaining things you need to...

Message message = new Message(); message.CorrelationId = Guid.NewGuid().ToString(); The above code snippet compiles but when you execute it, you get a System.InvalidOperationException with an ambiguous message: "Identifier is not in the incorrect format...

Windows Communication Foundation (WCF) provides a powerful programming model to develop service-oriented applications. MSMQ integrates very well with WCF so queued applications can be developed using WCF. WCF provides two bindings that support MSMQ -...

I have come across this question of whether JMS and MSMQ are interoperabe a number of times and so I decided to address it. Microsoft does not have a JMS provider for MSMQ so basically you will need to use a third party product or implement your own JMS...

One of the basic principles of MSMQ's design is that sender and receiver are decoupled. The sending application does not need to know whether the receiving application is running or even reachable under current network conditions: it can just send, and...

Justin is out of the country and I'm on the far side of the continent, so we're experiencing a small break in our posting schedule. For now, a quick tip: MSMQ is a transport. It supports a few mechanisms for scanning through the messages in a queue...

Internally, MSMQ uses the Windows-provided CryptoAPI to do all of its encryption and hashing. Starting with Windows NT 4.0 Service Pack 2, CryptoAPI had a bug in its implementation of RC2 encryption in the enhanced (128-bit) provider: the keys were generated...

In just five weeks, we’re going to be at TechEd Developers in Barcelona and we want to see you there! Everyone’s favorite plumber’s mate and world-renowned MSMQ expert, John Breakwell, and I will be representing MSMQ and WCF Queuing Nov. 5-9th at TechEd...

In MSMQ, there are two important kinds of entities. As you might expect, they are messages and queues. To MSMQ, a message is a bundle of properties. The thing you normally think of as being the message, the actual content, is one of those properties...

I'm not the only one writing about MSMQ. You probably know that already — you probably arrived here via a link from one of them! But if you didn't, check out the new Links section on the left. John Breakwell and Muhammed Ismail have been working with...

In the computer sense, which we're discussing here, queuing is a way to get bundles of data, normally referred to as messages, from one program to another. Most descriptions of queuing use a postal metaphor, probably because it's a very good one: queuing...