GNU bug report logs - #23982
[master] Treat errno EINPROGRESS and ENOTCONN as EAGAIN for async connection

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Jun Hao <jun_hao <at> aol.com>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 23982 <at> debbugs.gnu.org, Ted Zlatanov <tzz <at> lifelogs.com>, npostavs <at> users.sourceforge.net
Subject: bug#23982: [master] Treat errno EINPROGRESS and ENOTCONN as EAGAIN for async connection
Date: Tue, 26 Jul 2016 09:35:04 +0200

Thanks for the bug report and patch. Two thoughts:

* Passing GNUTLS_NONBLOCK to gnutls_init seems like a worthy change, but 
why does Emacs need to fiddle with an errno function? Surely GnuTLS 
should do the right thing with async connections, without Emacs having 
to insert a shim. Isn't this a bug in GnuTLS?

* The proposed patch uses gnutls_transport_set_errno_function, 
introduced in GnuTLS 2.12.0. Emacs master currently requires only GnuTLS 
2.6.6 or later. Would it be wise to bump the prerequisite version from 
2.6.6 to 2.12.0? I'll CC: this to Ted Zlanatov to see what he thinks.

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