faster webservice (Saml) authn to office365 endpoints


It takes just a second to access the web service endpoint of Exchange Online setup with federated security. From a windows form,

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The code from the sample takes 20s (as it goes about discovering a URL that is actually pretty static in Office365 land and only then bothers to hit the IP-STS):

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Slow original sample

Obviously, we are supposed to discover at “connection time” and locally persist the URL – for use the second time!

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About home_pw@msn.com

Computer Programmer who often does network administration with focus on security servers. Very strong in Microsoft Azure cloud!
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