From 226ef47beb597e9355b94550454f0ec9b6e9f4df Mon Sep 17 00:00:00 2001
From: Emiel Bruijntjes <emiel.bruijntjes@copernica.com>
Date: Mon, 14 Dec 2015 20:20:03 +0100
Subject: [PATCH] socket connections have close-on-exit bit set

---
 src/tcpresolver.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/tcpresolver.h b/src/tcpresolver.h
index e16d626..35475a8 100644
--- a/src/tcpresolver.h
+++ b/src/tcpresolver.h
@@ -114,6 +114,9 @@ private:
             {
                 // turn socket into a non-blocking socket
                 fcntl(_socket, F_SETFL, O_NONBLOCK);
+                
+                // switch on the close-on-exec bit
+                fcntl(_socket, F_SETFL, O_CLOEXEC);
 
                 // we want to enable "nodelay" on sockets (otherwise all send operations are s-l-o-w
                 int optval = 1;