From d46e7ee8c90a800e6f3c2f1db949e88635983b6b Mon Sep 17 00:00:00 2001
From: Florent Le Coz <louiz@louiz.org>
Date: Sat, 8 Feb 2014 08:14:24 +0100
Subject: Enable TCP keepalive on sockets

---
 src/network/socket_handler.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/network/socket_handler.cpp b/src/network/socket_handler.cpp
index 3fe423e..ae9489d 100644
--- a/src/network/socket_handler.cpp
+++ b/src/network/socket_handler.cpp
@@ -21,6 +21,9 @@ SocketHandler::SocketHandler():
 {
   if ((this->socket = ::socket(AF_INET, SOCK_STREAM, 0)) == -1)
     throw std::runtime_error("Could not create socket");
+  int optval = 1;
+  if (::setsockopt(this->socket, SOL_SOCKET, SO_KEEPALIVE, &optval, sizeof(optval)) == -1)
+    log_warning("Failed to enable TCP keepalive on socket: " << strerror(errno));
 }
 
 std::pair<bool, std::string> SocketHandler::connect(const std::string& address, const std::string& port)
-- 
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