From: Matt Corallo <git@bluematt.me>
Date: Sun, 23 Apr 2023 17:03:57 +0000 (+0000)
Subject: Drop `futures` dependency with `tokio::select`
X-Git-Url: http://git.bitcoin.ninja/index.cgi?p=ldk-sample;a=commitdiff_plain;h=a9b67530dd95bc1d2b0aa5f075efb6fa7c002d5f

Drop `futures` dependency with `tokio::select`

Manually poll'ing a future every 10ms rather than selecting across
it and a timer is less effecient, and certainly not worth taking a
dependency to do.
---

diff --git a/Cargo.toml b/Cargo.toml
index 15c6c79..9e83e5f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,7 +23,6 @@ bech32 = "0.8"
 hex = "0.3"
 libc = "0.2"
 
-futures = "0.3"
 chrono = "0.4"
 rand = "0.4"
 serde_json = { version = "1.0" }
diff --git a/src/cli.rs b/src/cli.rs
index 9e5e20b..96d5d9d 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -592,16 +592,12 @@ pub(crate) async fn do_connect_peer(
 		Some(connection_closed_future) => {
 			let mut connection_closed_future = Box::pin(connection_closed_future);
 			loop {
-				match futures::poll!(&mut connection_closed_future) {
-					std::task::Poll::Ready(_) => {
-						return Err(());
-					}
-					std::task::Poll::Pending => {}
-				}
-				// Avoid blocking the tokio context by sleeping a bit
-				match peer_manager.get_peer_node_ids().iter().find(|(id, _)| *id == pubkey) {
-					Some(_) => return Ok(()),
-					None => tokio::time::sleep(Duration::from_millis(10)).await,
+				tokio::select! {
+					_ = &mut connection_closed_future => return Err(()),
+					_ = tokio::time::sleep(Duration::from_millis(10)) => {},
+				};
+				if peer_manager.get_peer_node_ids().iter().find(|(id, _)| *id == pubkey).is_some() {
+					return Ok(());
 				}
 			}
 		}