From 468159e6d2687243fcd6c647986d0c747192e19d Mon Sep 17 00:00:00 2001
From: visuve <veli-matti.visuri@iki.fi>
Date: Thu, 4 Mar 2021 23:55:29 +0200
Subject: [PATCH] Close socket when setsockopt fails

- Prevent resource leak
---
 src/packet_sender.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/packet_sender.cpp b/src/packet_sender.cpp
index c7a91e21..96f7649e 100644
--- a/src/packet_sender.cpp
+++ b/src/packet_sender.cpp
@@ -267,6 +267,11 @@ void PacketSender::open_l3_socket(SocketType type) {
         #endif
         const int level = (is_v6) ? IPPROTO_IPV6 : IPPROTO_IP;
         if (setsockopt(sockfd, level, IP_HDRINCL, (option_ptr)&on, sizeof(on)) != 0) {
+            #ifndef _WIN32
+                ::close(sockfd);
+            #else
+                ::closesocket(sockfd);
+            #endif
             throw socket_open_error(make_error_string());
         }