From 9e43d678fb7e42526aa5ee2429efee4776dad69f Mon Sep 17 00:00:00 2001
From: zugz <mbays+tox@sdf.org>
Date: Sat, 5 Aug 2017 20:25:33 +0200
Subject: [PATCH] reset hole-punching parameters after not punching for a while

---
 toxcore/DHT.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/toxcore/DHT.c b/toxcore/DHT.c
index a4b97fb8..4ebe7f33 100644
--- a/toxcore/DHT.c
+++ b/toxcore/DHT.c
@@ -46,6 +46,9 @@
 /* Interval in seconds between punching attempts*/
 #define PUNCH_INTERVAL 3
 
+/* Time in seconds after which punching parameters will be reset */
+#define PUNCH_RESET_TIME 40
+
 #define MAX_NORMAL_PUNCHING_TRIES 5
 
 #define NAT_PING_REQUEST    0
@@ -2129,6 +2132,12 @@ static void do_NAT(DHT *dht)
                 continue;
             }
 
+            if (dht->friends_list[i].nat.punching_timestamp + PUNCH_RESET_TIME < temp_time) {
+                dht->friends_list[i].nat.tries = 0;
+                dht->friends_list[i].nat.punching_index = 0;
+                dht->friends_list[i].nat.punching_index2 = 0;
+            }
+
             uint16_t port_list[MAX_FRIEND_CLIENTS];
             uint16_t numports = NAT_getports(port_list, ip_list, num, ip);
             punch_holes(dht, ip, port_list, numports, i);