diff --git a/lib/src/ssh_client.dart b/lib/src/ssh_client.dart
index ee841f5..fb33181 100644
--- a/lib/src/ssh_client.dart
+++ b/lib/src/ssh_client.dart
@@ -170,8 +170,8 @@ class SSHClient {
     );
 
     _transport.done.then(
-      (_) => _handleTransportClosed(),
-      onError: (_) => _handleTransportClosed(),
+      (_) => _handleTransportClosed(null),
+      onError: (e) => _handleTransportClosed(e),
     );
 
     _authenticated.future.catchError(
@@ -473,11 +473,12 @@ class SSHClient {
     _requestAuthentication();
   }
 
-  void _handleTransportClosed() {
+
+  void _handleTransportClosed(SSHError? error) {
     printDebug?.call('SSHClient._onTransportClosed');
     if (!_authenticated.isCompleted) {
       _authenticated.completeError(
-        SSHAuthAbortError('Connection closed before authentication'),
+        SSHAuthAbortError('Connection closed before authentication', error)
       );
     }
     _keepAlive?.stop();
diff --git a/lib/src/ssh_errors.dart b/lib/src/ssh_errors.dart
index 68407de..11c6c94 100644
--- a/lib/src/ssh_errors.dart
+++ b/lib/src/ssh_errors.dart
@@ -50,7 +50,9 @@ class SSHAuthAbortError with SSHMessageError implements SSHAuthError {
   @override
   final String message;
 
-  SSHAuthAbortError(this.message);
+  final SSHError? reason;
+
+  SSHAuthAbortError(this.message, this.reason);
 }
 
 /// Errors that happen when the library receives an malformed packet.
diff --git a/test/src/ssh_client_test.dart b/test/src/ssh_client_test.dart
index ecd9189..38171da 100644
--- a/test/src/ssh_client_test.dart
+++ b/test/src/ssh_client_test.dart
@@ -1,3 +1,5 @@
+import 'dart:io';
+
 import 'package:dartssh2/dartssh2.dart';
 import 'package:test/test.dart';
 
@@ -137,6 +139,7 @@ void main() {
         fail('should have thrown');
       } catch (e) {
         expect(e, isA<SSHAuthAbortError>());
+        expect((e as SSHAuthAbortError).reason!, isA<SSHSocketError>());
       }
 
       client.close();