diff --git a/src/main.rs b/src/main.rs
index 6f2b9e2..30eb929 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -14,10 +14,23 @@ async fn main() {
 
 async fn run() -> BoxResult<()> {
     let args = Args::parse(matches())?;
-    serve(args).await
+    tokio::select! {
+        ret = serve(args) => {
+            ret
+        },
+        _ = shutdown_signal() => {
+            Ok(())
+        },
+    }
 }
 
 fn handle_err<T>(err: Box<dyn std::error::Error>) -> T {
     eprintln!("error: {}", err);
     std::process::exit(1);
 }
+
+async fn shutdown_signal() {
+    tokio::signal::ctrl_c()
+        .await
+        .expect("Failed to install CTRL+C signal handler")
+}
diff --git a/src/server.rs b/src/server.rs
index 983a8d5..2bbfd5c 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -54,65 +54,55 @@ macro_rules! status {
 }
 
 pub async fn serve(args: Args) -> BoxResult<()> {
-    match args.tls.as_ref() {
-        Some(_) => serve_https(args).await,
-        None => serve_http(args).await,
+    let args = Arc::new(args);
+    let socket_addr = args.address()?;
+    let inner = Arc::new(InnerService::new(args.clone()));
+    match args.tls.clone() {
+        Some((certs, key)) => {
+            let config = ServerConfig::builder()
+                .with_safe_defaults()
+                .with_no_client_auth()
+                .with_single_cert(certs, key)?;
+            let tls_acceptor = TlsAcceptor::from(Arc::new(config));
+            let arc_acceptor = Arc::new(tls_acceptor);
+            let listener = TcpListener::bind(&socket_addr).await?;
+            let incoming = tokio_stream::wrappers::TcpListenerStream::new(listener);
+            let incoming =
+                hyper::server::accept::from_stream(incoming.filter_map(|socket| async {
+                    match socket {
+                        Ok(stream) => match arc_acceptor.clone().accept(stream).await {
+                            Ok(val) => Some(Ok::<_, Infallible>(val)),
+                            Err(_) => None,
+                        },
+                        Err(_) => None,
+                    }
+                }));
+            let server = hyper::Server::builder(incoming).serve(make_service_fn(move |_| {
+                let inner = inner.clone();
+                async move {
+                    Ok::<_, Infallible>(service_fn(move |req| {
+                        let inner = inner.clone();
+                        inner.call(req)
+                    }))
+                }
+            }));
+            print_listening(args.address.as_str(), args.port, &args.uri_prefix, true);
+            server.await?;
+        }
+        None => {
+            let server = hyper::Server::try_bind(&socket_addr)?.serve(make_service_fn(move |_| {
+                let inner = inner.clone();
+                async move {
+                    Ok::<_, Infallible>(service_fn(move |req| {
+                        let inner = inner.clone();
+                        inner.call(req)
+                    }))
+                }
+            }));
+            print_listening(args.address.as_str(), args.port, &args.uri_prefix, false);
+            server.await?;
+        }
     }
-}
-
-pub async fn serve_https(args: Args) -> BoxResult<()> {
-    let args = Arc::new(args);
-    let socket_addr = args.address()?;
-    let (certs, key) = args.tls.clone().unwrap();
-    let inner = Arc::new(InnerService::new(args.clone()));
-    let config = ServerConfig::builder()
-        .with_safe_defaults()
-        .with_no_client_auth()
-        .with_single_cert(certs, key)?;
-    let tls_acceptor = TlsAcceptor::from(Arc::new(config));
-    let arc_acceptor = Arc::new(tls_acceptor);
-    let listener = TcpListener::bind(&socket_addr).await?;
-    let incoming = tokio_stream::wrappers::TcpListenerStream::new(listener);
-    let incoming = hyper::server::accept::from_stream(incoming.filter_map(|socket| async {
-        match socket {
-            Ok(stream) => match arc_acceptor.clone().accept(stream).await {
-                Ok(val) => Some(Ok::<_, Infallible>(val)),
-                Err(_) => None,
-            },
-            Err(_) => None,
-        }
-    }));
-    let server = hyper::Server::builder(incoming).serve(make_service_fn(move |_| {
-        let inner = inner.clone();
-        async move {
-            Ok::<_, Infallible>(service_fn(move |req| {
-                let inner = inner.clone();
-                inner.call(req)
-            }))
-        }
-    }));
-    print_listening(args.address.as_str(), args.port, &args.uri_prefix, true);
-    let graceful = server.with_graceful_shutdown(shutdown_signal());
-    graceful.await?;
-    Ok(())
-}
-
-pub async fn serve_http(args: Args) -> BoxResult<()> {
-    let args = Arc::new(args);
-    let socket_addr = args.address()?;
-    let inner = Arc::new(InnerService::new(args.clone()));
-    let server = hyper::Server::try_bind(&socket_addr)?.serve(make_service_fn(move |_| {
-        let inner = inner.clone();
-        async move {
-            Ok::<_, Infallible>(service_fn(move |req| {
-                let inner = inner.clone();
-                inner.call(req)
-            }))
-        }
-    }));
-    print_listening(args.address.as_str(), args.port, &args.uri_prefix, false);
-    let graceful = server.with_graceful_shutdown(shutdown_signal());
-    graceful.await?;
     Ok(())
 }
 
@@ -1012,9 +1002,3 @@ fn retrieve_listening_addrs(address: &str) -> Vec<String> {
     }
     vec![address.to_owned()]
 }
-
-async fn shutdown_signal() {
-    tokio::signal::ctrl_c()
-        .await
-        .expect("Failed to install CTRL+C signal handler")
-}