New: (UI) Detailed error message for inner exception in indexers validation

frontend/src/Components/Form/Form.css

@@ -1,3 +1,7 @@
 .validationFailures {
   margin-bottom: 20px;
 }
+
+.details {
+  margin-left: 5px;
+}

frontend/src/Components/Form/Form.css.d.ts

@@ -1,6 +1,7 @@
 // This file is automatically generated.
 // Please do not change this file!
 interface CssExports {
+  'details': string;
   'validationFailures': string;
 }
 export const cssExports: CssExports;

frontend/src/Components/Form/Form.js

@@ -1,7 +1,8 @@
 import PropTypes from 'prop-types';
 import React from 'react';
 import Alert from 'Components/Alert';
-import { kinds } from 'Helpers/Props';
+import Icon from 'Components/Icon';
+import { icons, kinds } from 'Helpers/Props';
 import styles from './Form.css';
 
 function Form(props) {
@@ -26,6 +27,16 @@ function Form(props) {
                     kind={kinds.DANGER}
                   >
                     {error.errorMessage}
+
+                    {
+                      error.detailedDescription ?
+                        <Icon
+                          containerClassName={styles.details}
+                          name={icons.INFO}
+                          title={error.detailedDescription}
+                        /> :
+                        null
+                    }
                   </Alert>
                 );
               })
@@ -39,6 +50,16 @@ function Form(props) {
                     kind={kinds.WARNING}
                   >
                     {warning.errorMessage}
+
+                    {
+                      warning.detailedDescription ?
+                        <Icon
+                          containerClassName={styles.details}
+                          name={icons.INFO}
+                          title={warning.detailedDescription}
+                        /> :
+                        null
+                    }
                   </Alert>
                 );
               })

src/NzbDrone.Core/Indexers/HttpIndexerBase.cs

@@ -18,6 +18,7 @@ using NzbDrone.Core.Indexers.Exceptions;
 using NzbDrone.Core.IndexerSearch.Definitions;
 using NzbDrone.Core.Messaging.Events;
 using NzbDrone.Core.Parser.Model;
+using NzbDrone.Core.Validation;
 using Polly;
 using Polly.Retry;
 
@@ -814,7 +815,10 @@ namespace NzbDrone.Core.Indexers
             {
                 _logger.Warn(ex, "Unable to connect to indexer");
 
-                return new ValidationFailure(string.Empty, "Unable to connect to indexer, please check your DNS settings and ensure IPv6 is working or disabled. " + ex.Message);
+                return new NzbDroneValidationFailure(string.Empty, "Unable to connect to indexer, please check your DNS settings and ensure IPv6 is working or disabled. " + ex.Message)
+                {
+                    DetailedDescription = ex.InnerException?.Message
+                };
             }
             catch (TaskCanceledException ex)
             {
@@ -841,7 +845,10 @@ namespace NzbDrone.Core.Indexers
             {
                 _logger.Warn(ex, "Unable to connect to indexer");
 
-                return new ValidationFailure(string.Empty, "Unable to connect to indexer, check the log above the ValidationFailure for more details. " + ex.Message);
+                return new NzbDroneValidationFailure(string.Empty, "Unable to connect to indexer, check the log above the ValidationFailure for more details. " + ex.Message)
+                {
+                    DetailedDescription = ex.InnerException?.Message
+                };
             }
 
             return null;