From b89062913d187cc0a5f47cd2cbbc017202f5910c Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Tue, 25 Jul 2023 11:11:34 +0200
Subject: [DownloadText] Better handling of errors

---
 .../openslx/taskmanager/tasks/DownloadText.java    | 30 +++++++++++++++++++---
 1 file changed, 27 insertions(+), 3 deletions(-)

diff --git a/src/main/java/org/openslx/taskmanager/tasks/DownloadText.java b/src/main/java/org/openslx/taskmanager/tasks/DownloadText.java
index 098b284..bf185bd 100644
--- a/src/main/java/org/openslx/taskmanager/tasks/DownloadText.java
+++ b/src/main/java/org/openslx/taskmanager/tasks/DownloadText.java
@@ -2,7 +2,8 @@ package org.openslx.taskmanager.tasks;
 
 import java.io.BufferedInputStream;
 import java.io.ByteArrayOutputStream;
-import java.io.IOException;
+import java.io.InputStream;
+import java.net.HttpURLConnection;
 import java.net.URL;
 import java.net.URLConnection;
 import java.nio.charset.StandardCharsets;
@@ -33,6 +34,28 @@ public class DownloadText extends AbstractTask
 		return true;
 	}
 
+	private String getError( URLConnection connection, boolean close )
+	{
+		if ( ! ( connection instanceof HttpURLConnection ) )
+			return null;
+
+		StringBuilder sb = new StringBuilder();
+		InputStream es = ( (HttpURLConnection)connection ).getErrorStream();
+		final byte data[] = new byte[ 9000 ];
+		try {
+			while ( es.read( data, 0, data.length ) != -1 ) {
+				if ( sb.length() < 1024 ) {
+					sb.append( new String( data, StandardCharsets.UTF_8 ) );
+				}
+			}
+		} catch ( Exception e ) {
+		}
+		if ( close ) {
+			Util.multiClose( es );
+		}
+		return sb.toString();
+	}
+
 	@Override
 	protected boolean execute()
 	{
@@ -61,10 +84,11 @@ public class DownloadText extends AbstractTask
 			}
 			status.content = baos.toString( StandardCharsets.UTF_8.name() );
 			return true;
-		} catch ( IOException e ) {
-			status.error = "Download error: " + e.toString();
+		} catch ( Exception e ) {
+			status.error = "Download error: " + e.toString() + "\n" + getError( connection, false );
 			return false;
 		} finally {
+			getError( connection, true );
 			Util.multiClose( in );
 		}
 	}
-- 
cgit v1.2.3-55-g7522