Enable TLS tickets / resumption with OpenSSL on Linux

[stephentoub]

From dotnet/performance#1146 (comment)

On the OpenSSL side, tls tickets and resumption are possible but need to be explicitly requested and it is not used by default. If we believe there is value in this (mainly for microservices connecting to same endpoint) I can open a new issue in runtime repro to track it as feature work.

cc: @wfurt, @bartonjs

[mjsabby]

This would be a pretty good feature to have for reasons mentioned in the referenced conversation. Is there a prototype by any chance floating out there?

[wfurt]

part of it is in the linked PR. I just did not have time recently to push that to completion.
Are you mostly interested in client, server or both @mjsabby?

[mjsabby]

Both. Although server is likely more involved to change so it'll be better if it's just done by you. client you could imagine using other libraries and pinvoking.

[CumpsD]

If this would work, then maybe these can finally work:

• FTPS not working on Linux since SSL session resumption is not supported robinrodricks/FluentFTP#347
• FtpWebRequest not reusing ssl session on linux (FTPS) #27916

[webczat]

does that include any api to view/control session info? or is there any issue tracking it?