[gnutls-devel] gnutls-bin and Emacs lisp TLS binding

[Andreas Metzler]

Hello,

I have received the following report from Adam Sjøgren in
 <http://bugs.debian.org/834516>:
----------------------------
After upgrading gnutls-bin from 3.5.2 to 3.5.3 Gnus hangs when fetching email
from imaps.

This is because gnutls-cli has stopped printing "- Handshake was completed",
which Gnus looks for.

It can be worked around by changing the variable tls-success in Gnus, which
may be the correct solution - I am reporting this bug in case the removal of
the text was unintended.

The printf was removed in https://gitlab.com/gnutls/gnutls.git in this commit:

  commit 7e051ae28c288c218584f75dbc6c097a3b2564c9
  Author: Nikos Mavrogiannopoulos <nmav at redhat.com>
  Date:   Tue Jul 26 10:33:24 2016 +0200

      tools: TLS handling has been incorporated into socket_open()

      This is of particular usage to the server IP address loop, since
      we can detect fast open errors and retry handshake to the next IP
      address.
[...]
Just noticed that the tls-success variable in Emacs lives in
lisp/net/tls.el, so the change affects all elisp applications/libraries
using it - besides Gnus¹ at least jabber.el².

¹ http://gnus.org/
² http://emacs-jabber.sourceforge.net/
----------------------------

cu Andreas

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