From 2bddcc9f997e5b1e565478e99c55488c86a85e76 Mon Sep 17 00:00:00 2001
From: Rene Treffer <treffer@measite.de>
Date: Wed, 23 Jul 2014 22:43:12 +0200
Subject: Add parsing for mdns QU records (RFC6762)

---
 src/main/java/de/measite/minidns/Record.java | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

(limited to 'src/main/java/de/measite/minidns/Record.java')

diff --git a/src/main/java/de/measite/minidns/Record.java b/src/main/java/de/measite/minidns/Record.java
index 6aaf4f7d..26af4711 100644
--- a/src/main/java/de/measite/minidns/Record.java
+++ b/src/main/java/de/measite/minidns/Record.java
@@ -222,6 +222,11 @@ public class Record {
      */
     protected Data payloadData;
 
+    /**
+     * MDNS defines the highest bit of the class as the unicast query bit.
+     */
+    protected boolean unicastQuery;
+
     /**
      * Parse a given record based on the full message data and the current
      * stream position.
@@ -233,7 +238,8 @@ public class Record {
         this.name = NameUtil.parse(dis, data);
         this.type = TYPE.getType(dis.readUnsignedShort());
         int clazzValue = dis.readUnsignedShort();
-        this.clazz = CLASS.getClass(clazzValue);
+        this.clazz = CLASS.getClass(clazzValue & 0x7fff);
+        this.unicastQuery = (clazzValue & 0x8000) > 0;
         if (this.clazz == null) {
             System.out.println("Unknown class " + clazzValue);
         }
@@ -298,6 +304,14 @@ public class Record {
                (q.getName().equals(name));
     }
 
+    /**
+     * See if this query/response was a unicast query (highest class bit set).
+     * @return True if it is a unicast query/response record.
+     */
+    public boolean isUnicastQuery() {
+        return unicastQuery;
+    }
+
     /**
      * The generic record name, e.g. "measite.de".
      * @return The record name.
-- 
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