Fail preconnect requests to deprecated TLS instead of allowing application to show warning

• Component: New Bugs
• Status: RESOLVED FIXED

[Alex Christensen]

Fail preconnect requests to deprecated TLS instead of allowing application to show warning

[Alex Christensen]

Created attachment 406469 [details]
Patch

[Alex Christensen]

rdar://problem/66784116

[Geoffrey Garen]

Comment on attachment 406469 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=406469&action=review

r=me

> Source/WebKit/NetworkProcess/cocoa/NetworkSessionCocoa.mm:678
> +        if (negotiatedLegacyTLS == NegotiatedLegacyTLS::Yes && task._preconnect)
> +            return completionHandler(NSURLSessionAuthChallengeCancelAuthenticationChallenge, nil);

Seems like we should also check the TLS deprecation feature flag here?

[Alex Christensen]

Comment on attachment 406469 [details]
Patch

There isn't a clean feature flag for this, especially not in the network process.  We have systemAllowsLegacyTLSFor, but even if that returns true we want to block the preconnect handshake to fix this bug.

[EWS]

Committed r265573: <https://trac.webkit.org/changeset/265573>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 406469 [details].

[Radar WebKit Bug Importer]

<rdar://problem/66941740>

[Alex Christensen]

This made one API test flaky.  No idea why it didn't fail until almost two weeks later, but I investigated it and it's no problem.  Fixing it in bug 215791.

[Alex Christensen]

Another test needed updating in https://bugs.webkit.org/show_bug.cgi?id=216704