From fe397e6953326fd2cca65634b328437594a932ef Mon Sep 17 00:00:00 2001
From: Mathias Gug <mathias@lyft.com>
Date: Wed, 11 May 2016 16:23:50 -0700
Subject: [PATCH] Support SO_REUSEPORT option

so that multiple osrm-routed processes can bind to the same port.
---
 include/server/server.hpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/server/server.hpp b/include/server/server.hpp
index 881307420..058c68d88 100644
--- a/include/server/server.hpp
+++ b/include/server/server.hpp
@@ -49,7 +49,12 @@ class Server
         boost::asio::ip::tcp::endpoint endpoint = *resolver.resolve(query);
 
         acceptor.open(endpoint.protocol());
+#ifdef SO_REUSEPORT
+        int one = 1;
+        setsockopt(acceptor.native_handle(), SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &one, sizeof(one));
+#else
         acceptor.set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
+#endif
         acceptor.bind(endpoint);
         acceptor.listen();