Matt Caswell

Updated the read record layer to clean away all the remaining references to the SSL object. Just DTLS left to look at on the read record layer side of things.

CIs now all green except one: the GOST external test. Not too sure how to debug that one - any hints @beldmit?

That much I figured out :-) What I'm not sure on is how to set that test up so I can run it through a debugger...

Great - thanks. Will try that.

> Feel free to ping me directly, I'm able to have a google meet if necessary Will do - thanks. Let's see how far I get first!

Thanks for tips @beldmit. I've now isolated the final problem and CIs are green!! I still have some outstanding TODOs on this PR that I am working through.

Finally I think this PR is ready for review!! I have taken it out of draft. This PR includes the commits from #18596 and #18868 which are being reviewed separately....

I've rebased this on top of commit ce602bb0 from the master branch. That includes the commits from #18596, so they no longer appear here. I've also removed the commits from...

This PR has now been rebased to the head of master, so now incorporates all of the SSL object refactor changes.

I've fixed or otherwise responded to all feedback items above. I've also rebased since there were some conflicts.