ASP.NET Membership Force HTTPS on PostBack

I have a login form on the home page of an ASP.NET 3.5 website which for performance reasons needs to be accessed with a standard HTTP connection. Since the normal postback for an ASP.NET page is relative call for the post, it would mean that when the browser posts the values are sent 开发者_如何学JAVAunprotected.

I would like to do one of two things to make this secure:

1. Force the Postback to be secure to the same page
2. Send the post to a different page using an HTTPS connection

Is there a way to implement option one?

I'm also looking at the Authentication Service, but looking at the URL reference it is using a relative path:

Sys.Services._AuthenticationService.DefaultWebServicePath = '../Authentication_JSON_AppService.axd';

I don't see a way to override this to put in an HTTP path.

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You could use Cross-Page posting:

http://msdn.microsoft.com/en-us/library/ms178139.aspx

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You can change the form's action property with javascript to tell it to submit to a different page with https. I have done this and it works nicely.

You could also change it to submit to the same page with https, but I think asp.net would complain about that (not sure - never tried it).

sample script:

document.forms[0].action = "https://www.whatever.com/submit_page.aspx";