proxy: refine error reporting a little bit more

crates/proxy-server/src/main.rs

@@ -49,7 +49,14 @@ async fn start_listener(endpoint: &str, timeout: std::time::Duration) -> anyhow:
 
     tokio::spawn(async move {
         loop {
-            let (socket, peer_address) = listener.accept().await.context("accepting connection")?;
+            let (socket, peer_address) = match listener.accept().await {
+                Ok(tuple) => tuple,
+                Err(err) => {
+                    log::error!("accept failed: {err:#}");
+                    return;
+                }
+            };
+
             tokio::spawn(async move {
                 if let Err(err) =
                     proxy_handler::handle_proxy_client(socket, peer_address, timeout).await
@@ -58,9 +65,6 @@ async fn start_listener(endpoint: &str, timeout: std::time::Duration) -> anyhow:
                 }
             });
         }
-
-        #[allow(unreachable_code)]
-        anyhow::Result::<()>::Ok(())
     });
     Ok(())
 }

crates/proxy-server/src/proxy_handler.rs

@@ -64,7 +64,10 @@ pub async fn handle_proxy_client(
         {
             Err(_) => RequestStatus::timeout(),
             Ok(Ok(s)) => s,
-            Ok(Err(err)) => RequestStatus::error(err),
+            Ok(Err(err)) => {
+                log::error!("peer={peer_address:?}: {state:?} {request:?} -> {err:#}");
+                RequestStatus::error(err)
+            }
         };
 
         // socks5 crate doesn't believe in allowing cloning, so we premptively debug