Revert "Revert "quic: increase timeout and keep alive (#4585)" (#4637)"

This reverts commit 0fed49a.

sdk/quic-definitions/src/lib.rs

@@ -16,8 +16,12 @@ pub const QUIC_TOTAL_STAKED_CONCURRENT_STREAMS: usize = 100_000;
 // forwarded packets from staked nodes.
 pub const QUIC_MAX_STAKED_CONCURRENT_STREAMS: usize = 512;
 
-pub const QUIC_MAX_TIMEOUT: Duration = Duration::from_secs(2);
-pub const QUIC_KEEP_ALIVE: Duration = Duration::from_secs(1);
+// Connection idle timeout, and keep alive.
+// Quic will close the connection after QUIC_MAX_TIMEOUT,
+// and send a ping every QUIC_KEEP_ALIVE.
+// These shouldn't be too low to avoid unnecessary ping traffic.
+pub const QUIC_MAX_TIMEOUT: Duration = Duration::from_secs(60);
+pub const QUIC_KEEP_ALIVE: Duration = Duration::from_secs(45);
 
 // Disable Quic send fairness.
 // When set to false, streams are still scheduled based on priority,