MSMQ from the plumber's mate

MSMQ is part of your business' IT plumbing which makes you the plumber and I'm your mate.

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  • Blog Post: How do monitor the efficiency of MSMQ using Multicast / PGM

    A customer asked me an interesting question - how to work out how many times an MSMQ Multicast message has to be retransmitted when the receiving client detects one is missing? The Performance Monitor counters for Multicast are a bit slim: "MSMQ Incoming Multicast Session" (normal throughput...
  • Blog Post: Having problems with MSMQ not sending or listening for Multicast messages?

    We've just found a problem with Multicasting on POSReady 2009 which I thought I would share. POSReady is an embedded implementation of Windows XP service pack 3 but the setup of components like MSMQ is different so this blog post may not necessarily be applicable to other Windows platforms. There...
  • Blog Post: Difference between Path name and Format name when accessing MSMQ queues

    For beginners to MSMQ development, the fact that there are FIVE ways of addressing an MSMQ queue is a real pitfall. Many hours will be lost trying to work out why a seemingly perfect address keeps returning errors. From MSDN: Referencing a Queue To perform an operation on a queue, an application...
  • Blog Post: 64kb limit on the size of MSMQ Multicast Messages

    When Windows 2003 came out, Microsoft introduced the ability to broadcast messages to any machines that were listening back. All you had to do was send out a message on a particular port and IP address and any client that had set up a Multicast queue with matching port and IP address would get a copy...
  • Blog Post: Does MSMQ 3.0 need the RMCAST (PGM) protocol driver?

    I noticed in the newsgroups that someone wanted to know how they could remove the PGM protocol from their machines to reduce their exposure to attacks over the network. In Windows 2003 and XP, this protocol is installed when Message Queuing is selected to provide support for multicasting. Unlike in...
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