print available stream features / mechanisms on incompat server

1 files changed, 17 insertions, 0 deletions

diff --git a/src/main/java/de/pixart/messenger/utils/XmlHelper.java b/src/main/java/de/pixart/messenger/utils/XmlHelper.java
index 299deed28..d990661e6 100644
--- a/src/main/java/de/pixart/messenger/utils/XmlHelper.java
+++ b/src/main/java/de/pixart/messenger/utils/XmlHelper.java
@@ -1,5 +1,7 @@
 package de.pixart.messenger.utils;
 
+import de.pixart.messenger.xml.Element;
+
 public class XmlHelper {
     public static String encodeEntities(String content) {
         content = content.replace("&", "&");
@@ -10,4 +12,19 @@ public class XmlHelper {
         content = content.replaceAll("[\\p{Cntrl}&&[^\n\t\r]]", "");
         return content;
     }
+
+    public static String printElementNames(final Element element) {
+        final StringBuilder builder = new StringBuilder();
+        builder.append('[');
+        if (element != null) {
+            for (Element child : element.getChildren()) {
+                if (builder.length() != 1) {
+                    builder.append(',');
+                }
+                builder.append(child.getName());
+            }
+        }
+        builder.append(']');
+        return builder.toString();
+    }
 }