From 5f4dfdc6838ed742a8faf7c874277073c62f34a9 Mon Sep 17 00:00:00 2001
From: emanuele-f <black.silver@hotmail.it>
Date: Mon, 25 Feb 2019 23:42:46 +0100
Subject: [PATCH] Reduce the registration timeout to keep the connection open

---
 edge_utils.c | 2 +-
 sn.c         | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/edge_utils.c b/edge_utils.c
index 13bb7c9..0244e47 100644
--- a/edge_utils.c
+++ b/edge_utils.c
@@ -32,7 +32,7 @@
 #define REGISTER_SUPER_INTERVAL_DFL     60 /* sec */
 #endif /* #if defined(DEBUG) */
 
-#define REGISTER_SUPER_INTERVAL_MIN     20   /* sec */
+#define REGISTER_SUPER_INTERVAL_MIN     5    /* sec */
 #define REGISTER_SUPER_INTERVAL_MAX     3600 /* sec */
 
 #define IFACE_UPDATE_INTERVAL           (30) /* sec. How long it usually takes to get an IP lease. */
diff --git a/sn.c b/sn.c
index f4fc1aa..906c45a 100644
--- a/sn.c
+++ b/sn.c
@@ -112,7 +112,8 @@ static void deinit_sn(n2n_sn_t * sss)
  *  should not allow registrations to continue beyond the shutdown point.
  */
 static uint16_t reg_lifetime(n2n_sn_t * sss) {
-  return 120;
+  /* NOTE: UDP firewalls usually have a 30 seconds timeout */
+  return 15;
 }