Question

In my current system I have a router service and over a dozen (about half use msmq, rest use tcp) WCF services hosted via IIS. I’ve been tasked with moving all services except for the router to a windows service. This has been accomplished using the same configurations that were present using the IIS web.config file. Here is a snippet of the previous configs (public queue for service: myservices/wcfservice):

  <!--Router Service web.config-->
  <client>
    <endpoint address="net.msmq://localhost/MyServices/WCFService.svc" binding="netMsmqBinding" contract="*" name="IWCFService_Msmq" />
  </client>

  <!--Services web.config-->
  <service behaviorConfiguration="SomeServiceBehavior" name="WCFService">
    <endpoint binding="netMsmqBinding" name="IWCFService_Msmq"
      contract="IWCFService" />
    <host>
      <baseAddresses>
        <add baseAddress="net.msmq://localhost/MyServices/WCFService" />
      </baseAddresses>
    </host>
  </service>

I’m confused as to why this works, as the service has a net.tcp binding and the router has msmq, and when I asked around, I was told it was “magic.” I tried to do the same thing with my setup (router to windows service) using a similar configuration but get an error message:

<!--Router Service web.config-->
  <client>
    <endpoint address="net.msmq://localhost/MyServices/WCFService" binding="netMsmqBinding" contract="*" name="IWCFService_Msmq" />
  </client>

  <!--One "other" Services hosted in Windows Service app.config-->
  <service behaviorConfiguration="SomeServiceBehavior" name="WCFService">
    <endpoint binding="netMsmqBinding" name="IWCFService_Msmq"
      contract="IWCFService" />
    <host>
      <baseAddresses>
        <add baseAddress="net.tcp://localhost/MyServices/WCFService" />
      </baseAddresses>
    </host>
  </service>

This has worked fine with all my services that are just using tcp, but when I try this with msmq and attempt to start the windows service, I get the following error in the Event Viewer:

Service cannot be started. System.InvalidOperationException: Could not find a base address that matches scheme net.msmq for the endpoint with binding NetMsmqBinding. Registered base address schemes are [net.tcp].

I’m new to msmq, so any help with be appreciated. Thanks!

Updated:

I’ve updated the base address in the service app.config to match the address that is in the router web.config. I tried this previously and it didn’t work. I later found out it was because I didn’t make the msmq itself a “Transactional Queue” (which was needed for our setup). Once this was done, everything worked out!

<!--One "other" Services hosted in Windows Service app.config-->
  <service behaviorConfiguration="SomeServiceBehavior" name="WCFService">
    <endpoint binding="netMsmqBinding" name="IWCFService_Msmq"
      contract="IWCFService" />
    <host>
      <baseAddresses>
        <add baseAddress="net.msmq://localhost/MyServices/WCFService" />
      </baseAddresses>
    </host>
  </service>

Answer 1

Why not give all of your MSMQ services their own config and all the tcp services their own? The issue is obviously it looks for a base address when you choose the binding to be msmq, and it can’t find an msmq binding because all you’ve provided is a tcp base address binding. You can also of course add another base address that uses net.msmq inside the baseaddresses node.