From 399eaa39156f756956f38fab20083293da826fdd Mon Sep 17 00:00:00 2001
From: Arpan Kapoor <a@arpankapoor.com>
Date: Tue, 3 Oct 2023 06:35:13 +0000
Subject: [PATCH] refactor(examples): change ping from async-std to tokio

Related: #4449.

Pull-Request: #4570.
---
 Cargo.lock                | 3 +--
 examples/ping/Cargo.toml  | 5 ++---
 examples/ping/src/main.rs | 6 +++---
 3 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 650a2b700b7..b9a3df8cd5b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4011,11 +4011,10 @@ checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 name = "ping-example"
 version = "0.1.0"
 dependencies = [
- "async-std",
- "async-trait",
  "env_logger 0.10.0",
  "futures",
  "libp2p",
+ "tokio",
 ]
 
 [[package]]
diff --git a/examples/ping/Cargo.toml b/examples/ping/Cargo.toml
index 33c9e56b45c..985959be301 100644
--- a/examples/ping/Cargo.toml
+++ b/examples/ping/Cargo.toml
@@ -6,8 +6,7 @@ publish = false
 license = "MIT"
 
 [dependencies]
-async-std = { version = "1.12", features = ["attributes"] }
-async-trait = "0.1"
 env_logger = "0.10.0"
 futures = "0.3.28"
-libp2p = { path = "../../libp2p", features = ["async-std", "dns", "macros", "noise", "ping", "tcp", "websocket", "yamux"] }
+libp2p = { path = "../../libp2p", features = ["noise", "ping", "tcp", "tokio", "yamux"] }
+tokio = { version = "1.32.0", features = ["full"] }
diff --git a/examples/ping/src/main.rs b/examples/ping/src/main.rs
index 898a25813e0..25939a132c1 100644
--- a/examples/ping/src/main.rs
+++ b/examples/ping/src/main.rs
@@ -30,20 +30,20 @@ use libp2p::{
 use std::error::Error;
 use std::time::Duration;
 
-#[async_std::main]
+#[tokio::main]
 async fn main() -> Result<(), Box<dyn Error>> {
     env_logger::init();
     let local_key = identity::Keypair::generate_ed25519();
     let local_peer_id = PeerId::from(local_key.public());
 
-    let transport = tcp::async_io::Transport::default()
+    let transport = tcp::tokio::Transport::default()
         .upgrade(Version::V1Lazy)
         .authenticate(noise::Config::new(&local_key)?)
         .multiplex(yamux::Config::default())
         .boxed();
 
     let mut swarm =
-        SwarmBuilder::with_async_std_executor(transport, ping::Behaviour::default(), local_peer_id)
+        SwarmBuilder::with_tokio_executor(transport, ping::Behaviour::default(), local_peer_id)
             .idle_connection_timeout(Duration::from_secs(60)) // For illustrative purposes, keep idle connections alive for a minute so we can observe a few pings.
             .build();