c# - I need to invoke a method in WCF before my operation contracts gets called -

i need validate request in operation contracts. request base have user authentication token needs validated every time.

i need invoke method in wcf (basically validate request) before operation contracts gets called. otherwise have write code validate request in operation contract methods.

is there option in wcf this?

wcf offers several extensibility points. check idispatchmessageinspector.afterreceiverequest allows inspect incoming message before dispatched operation.