From 65eddb2b40ff82334f7cad7f7f4c61ab8f038f72 Mon Sep 17 00:00:00 2001
From: Tijmen van Nesselrooij <tijmen_222@hotmail.com>
Date: Wed, 19 Jun 2019 19:41:43 +0200
Subject: [PATCH] Use socket opt to prevent a lingering socket after program
 close

---
 src/server/socket/listeningsocket.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/server/socket/listeningsocket.cpp b/src/server/socket/listeningsocket.cpp
index c91b7b1..9ac5dbe 100644
--- a/src/server/socket/listeningsocket.cpp
+++ b/src/server/socket/listeningsocket.cpp
@@ -25,6 +25,12 @@ ListeningSocket::ListeningSocket(int const port)
 		throw std::runtime_error("socket creation error");
 	}
 
+	int enable = 1;
+	if (setsockopt(socketFileDescriptor, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(int)) < 0)
+	{
+		throw std::runtime_error("setsockopt SO_REUSEADDR failed");
+	}
+
 	socketAddress.sin_family = AF_INET;
 	socketAddress.sin_addr.s_addr = INADDR_ANY;
 	socketAddress.sin_port = htons(port);