[Mono-dev] WCF: InstanceContextMode.PerSession

[Atsushi Eno]

Ah, thanks, forgot about that ReleaseInstanceMode property ;-)

Atsushi Eno

(2011/01/11 19:17), Adar Wesley wrote:
> Hi,
>
> I was reading this thread and just by chance was reading up on WCF 
> Services Session instantiation and release today.
> I thought the following links might be useful to clear up the MS.NET 
> <http://MS.NET> behavior:
> Sessions, Instancing, and Concurrency 
> <http://msdn.microsoft.com/en-us/library/ms731193.aspx>
> system.servicemodel.operationbehaviorattribute.releaseinstancemode 
> <http://msdn.microsoft.com/en-us/library/system.servicemodel.operationbehaviorattribute.releaseinstancemode.aspx>
> system.servicemodel.servicebehaviorattribute.releaseserviceinstanceontransactioncomplete 
> <http://msdn.microsoft.com/en-us/library/system.servicemodel.servicebehaviorattribute.releaseserviceinstanceontransactioncomplete.aspx>
>
> Hope this helps.
>
> ---
> Adar Wesley
>
>
> On Tue, Jan 11, 2011 at 8:07 AM, Atsushi Eno 
> <atsushieno at veritas-vos-liberabit.com 
> <mailto:atsushieno at veritas-vos-liberabit.com>> wrote:
>
>     Hi again,
>
>     To my understanding, a session (ISession) is usually member of
>     ISessionChannel types, its lifecycle is bound to the channel, and we
>     indeed have such implementation in TcpDuplexSessionChannel.
>
>     If we got to know .NET behaviors we'll do the same in WCF ;)
>
>     Atsushi Eno
>
>     (2011/01/10 0:03), Karsten Fourmont wrote:
>     > sigh: it seems no matter how long I wait before making a post to get
>     > the details right, still every time something comes up minutes
>     after I
>     > hit the "send" button.
>     >
>     > So here's a small addition:
>     > It doesn't seem very well defined in the WCF documentation if an
>     when
>     > Dispose should be called on a service instance. Service classes
>     don't
>     > have to be IDisposable. But if they are, .NET invokes Dispose and I
>     > think mono should do the same. However exactly "when" this
>     dispose is
>     > supposed to happen is not perfectly clear:
>     > http://msdn.microsoft.com/en-us/library/ms733040.aspx states:
>     > "In the default case, WCF recycles the service object and its
>     context
>     > after the session with which the service was associated is closed."
>     > So Dispose doesn't have to be called on session termination, but
>     > (maybe?) on service channel termination on the server side.
>     Whatever.
>     >
>     > The service instance just has to be able to find out when it should
>     > free the session's resources once the session is closed either
>     by the
>     > client or by the server (like due to an inactivity timeout).
>     >
>     > Atsushi, I definitely don't envy you (or any of the mono team) for
>     > having to implement something which is not properly specified. Only
>     > Perl's "the implementation is the specification" seems worse ;-)
>     > Great work!
>     >
>     > Cheers,
>     >  Karsten
>
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