1commit 9e42bff01440c1351946a432126d5a1b87fb7c78
 2Author: Rene Treffer <treffer@measite.de>
 3Date:   Wed Jul 30 22:38:02 2014 +0200
 4
 5    Allow mdns multicast / unicast reply queries
 6
 7diff --git a/src/main/java/de/measite/minidns/Question.java b/src/main/java/de/measite/minidns/Question.java
 8index 883003561..3b2fa1a13 100644
 9--- a/src/main/java/de/measite/minidns/Question.java
10+++ b/src/main/java/de/measite/minidns/Question.java
11@@ -30,6 +30,11 @@ public class Question {
12      */
13     private final CLASS clazz;
14 
15+    /**
16+     * UnicastQueries have the highest bit of the CLASS field set to 1.
17+     */
18+    private final boolean unicastQuery;
19+
20     /**
21      * Cache for the serialized object.
22      */
23@@ -41,10 +46,21 @@ public class Question {
24      * @param type The type, e.g. A.
25      * @param clazz The class, usually IN (internet).
26      */
27-    public Question(String name, TYPE type, CLASS clazz) {
28+    public Question(String name, TYPE type, CLASS clazz, boolean unicastQuery) {
29         this.name = name;
30         this.type = type;
31         this.clazz = clazz;
32+        this.unicastQuery = unicastQuery;
33+    }
34+
35+    /**
36+     * Create a dns question for the given name/type/class.
37+     * @param name The name e.g. "measite.de".
38+     * @param type The type, e.g. A.
39+     * @param clazz The class, usually IN (internet).
40+     */
41+    public Question(String name, TYPE type, CLASS clazz) {
42+        this(name, type, clazz, false);
43     }
44 
45     /**
46@@ -106,7 +122,7 @@ public class Question {
47             try {
48                 dos.write(NameUtil.toByteArray(this.name));
49                 dos.writeShort(type.getValue());
50-                dos.writeShort(clazz.getValue());
51+                dos.writeShort(clazz.getValue() | (unicastQuery ? (1 << 15) : 0));
52                 dos.flush();
53             } catch (IOException e) {
54                 // Should never happen