I've upgraded and got a warning about tls.el being obsoleted. No rush of fixing this one, but in a future release it will be gone. This shouldn't be too hard to fix, things I've found so far:
tls-end-of-info needs to be vendored. I remember a bug report about it where the regexp has been adjusted and should take a closer look whether the suggested or the most current regexp work better.
tls-program seems analogous to tls-connection-command, but omits OpenSSLs s_client which caused numerous issues in the past and should most likely not be used. There's at least one bug report about it and it might need adjustment, too.
tls-process-connection-type and tls-success need to be vendored.
Finally, (require 'tls) should be dropped and a changelog note about lack of s_client support made.
A more drastic solution would be to use built-in TLS support as suggested in the last link, at the cost of Emacs possibly hanging when reconnecting (an issue not present with the subprocess solution).
I've upgraded and got a warning about tls.el being obsoleted. No rush of fixing this one, but in a future release it will be gone. This shouldn't be too hard to fix, things I've found so far:
tls-end-of-infoneeds to be vendored. I remember a bug report about it where the regexp has been adjusted and should take a closer look whether the suggested or the most current regexp work better.tls-programseems analogous totls-connection-command, but omits OpenSSLss_clientwhich caused numerous issues in the past and should most likely not be used. There's at least one bug report about it and it might need adjustment, too.tls-process-connection-typeandtls-successneed to be vendored.(require 'tls)should be dropped and a changelog note about lack ofs_clientsupport made.See also:
A more drastic solution would be to use built-in TLS support as suggested in the last link, at the cost of Emacs possibly hanging when reconnecting (an issue not present with the subprocess solution).