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feat(snownet): decrease idle connection ICE timeout (#9570)

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Any well-behaved NAT should keep the port mappings of an established UDP
connection open for 120s, even without seeing any traffic. Not all NATs
in the wild are well-behaved though and a discarded port mapping causes
connectivity loss for customers.

To combat these situations, we decrease the timer for STUN probes on
idle connections from 60s to 25s.

Related: #9526
This commit is contained in:
Thomas Eizinger
2025-06-18 18:53:26 +02:00
committed by GitHub
parent bc854e1f9a
commit 650cf893ba
1 changed files with 3 additions and 3 deletions
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6
rust/connlib/snownet/src/node.rs
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@@ -2246,8 +2246,8 @@ fn apply_default_stun_timings(agent: &mut IceAgent) {
fn apply_idle_stun_timings(agent: &mut IceAgent) {
agent.set_max_stun_retransmits(4);
agent.set_max_stun_rto(Duration::from_secs(60));
agent.set_initial_stun_rto(Duration::from_secs(60));
agent.set_max_stun_rto(Duration::from_secs(25));
agent.set_initial_stun_rto(Duration::from_secs(25));
}
/// A session ID is constant for as long as a [`Node`] is operational.
@@ -2291,6 +2291,6 @@ mod tests {
apply_idle_stun_timings(&mut agent);
assert_eq!(agent.ice_timeout(), Duration::from_secs(240))
assert_eq!(agent.ice_timeout(), Duration::from_secs(100))
}
}