From 33bb63cb2b4f37eb423f40d0cbe2459a2852d44f Mon Sep 17 00:00:00 2001
From: Lorenz Stechauner <lorenz.stechauner@gmail.com>
Date: Thu, 13 Aug 2020 12:17:09 +0200
Subject: [PATCH] Third os detection try

---
 src/client.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/client.cpp b/src/client.cpp
index 887f2f0..5f35b33 100644
--- a/src/client.cpp
+++ b/src/client.cpp
@@ -110,7 +110,7 @@ string get_os_info(int fd) {
 
     int ttl;
     unsigned int ttlsize = sizeof(ttl);
-    getsockopt(fd, IPPROTO_TCP, IP_TTL, &ttl, &ttlsize);
+    getsockopt(fd, IPPROTO_IP, IP_TTL, &ttl, &ttlsize);
 
     return "win_size=" + to_string(winsize) + ", ttl=" + to_string(ttl);
 }