.net - WCF REST StarterKit and RequestInterceptor thread safety -

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i looking technical information how requestinterceptor wcf rest starter kit works, didn't find wanted. let's @ code snippet took custom service host factory:

    protected override system.servicemodel.servicehost createservicehost(type servicetype, uri[] baseaddresses)     {         var host = (webservicehost2)base.createservicehost(servicetype, baseaddresses);         var authenticationprovider = container.trygetinstance<iauthenticationprovider>();         var authorizationrepository = container.trygetinstance<iuserfinder>();         if (authenticationprovider == null)             authenticationprovider = new defaultauthenticationprovider(authorizationrepository);         var securitycontext = new securitycontext();         host.interceptors.add(new authenticationinterceptor(authenticationprovider, securitycontext));         return host;     }

that code increateservicehost method executed once.

however on every http request authenticationinterceptor executed. can see authenticationinterceptor has dependencies on securitycontext class , iuserfinder repository.

what happens when several http request come @ same time?

  1. does wcf execute authenticationinterceptor concurrently means securitycontext , iuserfinder instance should thread safe? iuserfinder depends on data base resources.
  2. each request executed 1 after authenticationinterceptor can't executed concurrently 2 different calls?

i found on own. seems given request requestinterceptors run in thread safe manner before next request handled. requests queued until first request finish go through request interceptors.


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