TLS problem: gnutls-e-again

[Magnus Henoch <magnus.henoch@gmail.com>]

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Hi all,

I just updated to the latest master, and found that there are problems
establishing TLS connections. With jabber.el, this is what appears in the
messages buffer:

Connecting to xmpp.l.google.com:5222...
gnutls.el: (err=[gnutls-e-again] Resource temporarily unavailable, try
again.) boot: (:priority NORMAL :hostname gmail.com :loglevel 0
:min-prime-bits nil :trustfiles (/opt/local/share/curl/curl-ca-bundle.crt)
:crlfiles nil :keylist nil :verify-flags nil :verify-error (:hostname . t)
:callbacks nil)
magnus.henoch@gmail.com: connection lost: ‘STARTTLS negotiation failed:
GnuTLS error: #<process jabber>, gnutls-e-again’

Unfortunately, my attempts at creating a self-contained test case have
failed so far... What jabber.el does, is that it opens an asynchronous
network connection (:nowait t), performs XMPP feature negotiation in
cleartext, and then attempts to do STARTTLS using gnutls-negotiate.

I can reproduce this on OSX as well as GNU/Linux:

GNU Emacs 25.1.50.4 (x86_64-apple-darwin14.5.0, NS appkit-1348.17 Version
10.10.5 (Build 14F1509)) of 2016-03-05
GNU Emacs 25.1.50.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.4.2) of
2016-03-05

Any idea what might be wrong? Is there any more information that would be
helpful?

Regards,
Magnus

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