From: Eric Wong <normalperson@yhbt.net>
Date: Tue, 6 Dec 2011 04:39:36 +0000 (+0000)
Subject: enable SO_KEEPALIVE for connected TCP sockets
X-Git-Tag: v1.7.8.2~17^2
X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/e47a8583a20256851e7fc882233e3bd5bf33dc6e?hp=e47a8583a20256851e7fc882233e3bd5bf33dc6e

enable SO_KEEPALIVE for connected TCP sockets

Sockets may never receive notification of some link errors,
causing "git fetch" or similar processes to hang forever.
Enabling keepalive messages allows hung processes to error out
after a few minutes/hours depending on the keepalive settings of
the system.

This is a problem noticed when running non-interactive
cronjobs to mirror repositories using "git fetch".

Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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