open connection log

src/server.rs

@@ -82,6 +82,8 @@ impl FlowgateServer {
                     let Ok(_) = stream.set_read_timeout(Some(local_self.config.connection_timeout)) else { continue };
 
                     threadpool.execute(move || {
+                        debug!("{} open connection", addr);
+
                         local_self.accept_stream(
                             &mut stream,
                             addr,