libp2p: bump dupe grace period

1 files changed, 6 insertions, 5 deletions

diff --git a/src/transport/libp2p/mod.rs b/src/transport/libp2p/mod.rs
index 0d26625..6c57867 100644
--- a/src/transport/libp2p/mod.rs
+++ b/src/transport/libp2p/mod.rs
@@ -190,11 +190,12 @@ const EXPLORED_AT_ONCE: usize = 4;
 /// mentioned every few seconds (`swarm::topology`). Checked every `PRUNE_EVERY`.
 const STALE_AFTER: Duration = Duration::from_secs(600);
 const PRUNE_EVERY: Duration = Duration::from_secs(60);
-/// Several connections to one peer (both dialled at once, or AutoNAT dialled back to
-/// see whether it can) are cut to one, the fastest (`Book::duplicates`), this long after
-/// the last one opened: long enough for what it was dialled for, and for each to be
-/// pinged (at once, as it opens). Looked for every `DEDUPE_EVERY`.
-const DUPLICATE_GRACE: Duration = Duration::from_secs(10);
+/// Several connections to one peer (both dialled at once, AutoNAT dialling back to see
+/// whether it can, or a better path explored) are cut to one, the fastest
+/// (`Book::duplicates`), this long after the last one opened: long enough for what it
+/// was dialled for, and for each to be pinged since (a new one at once, as it opens;
+/// the others within libp2p's ping interval, 15 s). Looked for every `DEDUPE_EVERY`.
+const DUPLICATE_GRACE: Duration = Duration::from_secs(20);
 /// The same while a peer is connected only through relays: a new relayed connection is
 /// a hole punch under way (`PUNCH_RETRIES`), which takes its tries (up to a QUIC
 /// handshake's 5 s each, three times) on that connection.