An extension of name 'transportClientEndpointBehavior' already appears in extension collection. Extension names must be unique.

Question

Hi,

I am trying to run the very first sample from the WATK called: Connecting Applications through the Windows Azure Service Bus.

When I run the sample I get:
"An extension of name 'transportClientEndpointBehavior' already appears in extension collection. Extension names must be unique."
on
host = new ServiceHost(typeof(EchoService), address);

I have read somewhere that this might happen due to a bad uninstallation of the Azure AppFabric SDK and that there are some entries left in machine.config, so I tried to uncomment those with no result.

If I uncomment the entries in app.config. I get
"Configuration binding extension 'system.serviceModel/bindings/netTcpRelayBinding' could not be found. Verify that this binding extension is properly registered in system.serviceModel/extensions/bindingExtensions and that it is spelled correctly."

Any suggestions where I should look to get this fixed?

I am running the latest Azure SDK v1.6 and the AppFabric SDK v1.5.

CU
Daniel

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Windows Azure - the next gen MSFT cloud platform

Answer 1

Hi Daniel,

1. This is a German forum, with German as Language for Postings
2. Wrong Forum - Better is the Windows Azure Forum

WATK = Windows Azure Trainings Kit? If the answer is yes: Which version of the training kit is used?
In the current version, I can not find the sample.

Regards

Oliver

Answer 2

Hallo Oliver,

ok ... deutsch ist auch einfacher ... erst mal danke! Ich habe das Windows Azure Training Kit December Refresh verwendet. Müsste aber eins der ersten Service Bus Hans On's gewesen sein, die es überhaupt gab.

Ich habe den Fehler gefixt, indem ich alle manuellen Änderungen wieder zurückgedreht habe (also in der machine.config alle comments wieder entfernt). Dann habe ich das AppFabric SDK deinstalliert und nach dem Schema hier reinstalliert. Zitat:

 

This is caused by a known issue in the upgrade from the Windows Azure 1.0 SDK to the Windows Azure 1.6 SDK. The following workaround resolves the issue:

    Uninstall the Windows Azure SDK version 1.6.

    Install the Windows Azure SDK version 1.0 from http://go.microsoft.com/fwlink/?LinkID=228910. On the Add/Remove Programs Control Panel applet, this appears as version 1.0.1471.

    Reinstall the Windows Azure SDK version 1.6 from http://go.microsoft.com/fwlink/?LinkID=226941.

 

Nun tut es, wie es soll.

Dank an Oliver.

 

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Windows Azure - the next gen MSFT cloud platform

Answer 3

Hallo Daniel,

schön das Du die Lösung gefunden hast. Ich habe inzwischen auch das Sample gefunden (der Lab Ordner hat einen anderen Namen "ServiceBusConnectingApps", deshalb war ich erstmal etwas irritiert).

Bei Fragen zu Windows Azure bitte künftig hier posten, sonst bekomme ich nie Leben in die Bude.

Schöne Grüße aus Berlin

Oliver