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Implement exponential backoff for peer monitoring at startup (#1459)

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* Implement exponential backoff for peer monitoring at startup

Fixes #1413
This commit is contained in:
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2018-09-01 23:25:47 +02:00
committed by GitHub
parent 60d62bfb97
commit fa00a0ebe6
2 changed files with 17 additions and 13 deletions
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servers/src/grin/seed.rs
+11 -2
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@@ -63,10 +63,15 @@ pub fn connect_and_monitor(
);
let mut prev = Utc::now() - Duration::seconds(60);
let mut start_attempt = 0;
let start_wait_base: i64 = 2;
loop {
let current_time = Utc::now();
if peers.peer_count() < p2p_server.config.peer_min_preferred_count()
// make several attempts to get peers as quick as possible with
// exponential backoff
if (peers.peer_count() < p2p_server.config.peer_min_preferred_count()
&& current_time - prev > Duration::seconds(start_wait_base.pow(start_attempt)))
|| current_time - prev > Duration::seconds(20)
{
// try to connect to any address sent to the channel
@@ -84,6 +89,9 @@ pub fn connect_and_monitor(
update_dandelion_relay(peers.clone(), dandelion_config.clone());
prev = current_time;
if start_attempt < 6 {
start_attempt += 1;
}
}
thread::sleep(time::Duration::from_secs(1));
@@ -305,7 +313,8 @@ pub fn dns_seeds() -> Box<Fn() -> Vec<SocketAddr> + Send> {
pub fn web_seeds() -> Box<Fn() -> Vec<SocketAddr> + Send> {
Box::new(|| {
let text: String = api::client::get(SEEDS_URL).expect("Failed to resolve seeds");
let addrs = text.split_whitespace()
let addrs = text
.split_whitespace()
.map(|s| s.parse().unwrap())
.collect::<Vec<_>>();
debug!(LOGGER, "Retrieved seed addresses: {:?}", addrs);