proxy: factor out accept_connection

no functional changes, moved code and named the channel's
type for more readability

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>

src/bin/proxmox-backup-proxy.rs

@@ -170,19 +170,31 @@ async fn run() -> Result<(), Error> {
     Ok(())
 }
 
+type ClientStreamResult =
+    Result<std::pin::Pin<Box<tokio_openssl::SslStream<tokio::net::TcpStream>>>, Error>;
+const MAX_PENDING_ACCEPTS: usize = 1024;
+
 fn accept_connections(
     listener: tokio::net::TcpListener,
     acceptor: Arc<openssl::ssl::SslAcceptor>,
     debug: bool,
-) -> tokio::sync::mpsc::Receiver<Result<std::pin::Pin<Box<tokio_openssl::SslStream<tokio::net::TcpStream>>>, Error>> {
+) -> tokio::sync::mpsc::Receiver<ClientStreamResult> {
-
-    const MAX_PENDING_ACCEPTS: usize = 1024;
 
     let (sender, receiver) = tokio::sync::mpsc::channel(MAX_PENDING_ACCEPTS);
 
+    tokio::spawn(accept_connection(listener, acceptor, debug, sender));
+
+    receiver
+}
+
+async fn accept_connection(
+    listener: tokio::net::TcpListener,
+    acceptor: Arc<openssl::ssl::SslAcceptor>,
+    debug: bool,
+    sender: tokio::sync::mpsc::Sender<ClientStreamResult>,
+) {
     let accept_counter = Arc::new(());
 
-    tokio::spawn(async move {
     loop {
         match listener.accept().await {
             Err(err) => {
@@ -246,9 +258,6 @@ fn accept_connections(
             }
         }
     }
-    });
-
-    receiver
 }
 
 fn start_stat_generator() {