fix: add echo test back

Author: cxw620

Cargo.lock

@@ -34,7 +34,10 @@ ktls-util = { path = "../ktls-util" }
 rand = "0.9.2"
 rcgen = { version = "0.14.3" }
 rustls = { version = "0.23.27", default-features = false, features = ["std", "ring"] }
-tokio = { version = "1.40", features = ["io-util", "macros", "net", "rt-multi-thread", "signal", "time"] }
+test-case = "3.3.1"
+tokio = { version = "1.40", features = ["io-util", "macros", "net", "rt-multi-thread", "signal", "sync", "time"] }
+tracing = "0.1.41"
+tracing-subscriber = { version = "0.3.19", features = ["env-filter", "parking_lot"] }
 
 [features]
 default = ["tls12", "async-io-tokio"]

ktls/Cargo.toml

@@ -4,10 +4,14 @@ mod common;
 
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let _ = tracing_subscriber::fmt()
+        .with_env_filter(tracing_subscriber::EnvFilter::new("TRACE"))
+        .try_init();
+
     tokio::select! {
         biased;
         _ = tokio::signal::ctrl_c() => {
-            println!("Received Ctrl + C...");
+            tracing::info!("Received Ctrl + C...");
 
             Ok(())
         }