From 98474e2329c99aa9caf38159383dbc844fbd20a5 Mon Sep 17 00:00:00 2001
From: zonyitoo <zonyitoo@gmail.com>
Date: Sun, 24 May 2020 16:22:17 +0800
Subject: [PATCH] UDP associations' default timeout to be 15 seconds

ref #262
---
 src/relay/udprelay/mod.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/relay/udprelay/mod.rs b/src/relay/udprelay/mod.rs
index fead9578..65a45cd2 100644
--- a/src/relay/udprelay/mod.rs
+++ b/src/relay/udprelay/mod.rs
@@ -71,4 +71,8 @@ mod utils;
 pub const MAXIMUM_UDP_PAYLOAD_SIZE: usize = 65536;
 
 /// Default association expire time
-pub const DEFAULT_TIMEOUT: Duration = Duration::from_secs(5 * 60);
+///
+/// FIXME: It is very hard to decide how long this value should be.
+/// For some usecases, clients may open a socket for sending just one packet,
+/// which will eventually cause too many *useless* associations are kept in the server.
+pub const DEFAULT_TIMEOUT: Duration = Duration::from_secs(15);