Add new operation contract/method in WCF service, but no change in client

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I had come accross a question long back

I have a WCF service, hosted in IIS of a server.

This service is accessed by multiple clients, have different endpoints (All .Net clients only)

Now, I need to add new operation contract/method in that service, build, and then refresh in the IIS.

But: the client/s need to be UNTOUCHED

any way/s is/are there, that the client/s can still access the service and they will get the new methods ??

What I have tried:

I said:

we can just update the service references in the clients' app, so they will get..

but, it was strict: "CLIENT/S SHOULD BE UNTOUCHED"

<Kindly help me in this>

Posted 18-Jan-19 5:00am

Kingshuk_SP

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Richard Deeming 18-Jan-19 13:04pm

It's quite easy to add new methods to the server without breaking the existing clients. But the clients can't call methods they know nothing about.

Kingshuk_SP 18-Jan-19 14:16pm

noted. and one thing:
suppose, I change the code of any existing method/s, but input param/s will remain same, only some logic change..., then client will not need to update their service reference right ?

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