From fbf2df29118ec1cbd8c00e97c29ac686ebc160ca Mon Sep 17 00:00:00 2001
From: Anton Keks <anton@azib.net>
Date: Sun, 31 Aug 2014 20:02:54 +0300
Subject: [PATCH] make sure we close the socket

---
 src/net/azib/ipscan/fetchers/HostnameFetcher.java | 5 ++++-
 src/net/azib/ipscan/util/MDNSResolver.java        | 7 ++++++-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/net/azib/ipscan/fetchers/HostnameFetcher.java b/src/net/azib/ipscan/fetchers/HostnameFetcher.java
index bc654aa1..5adf2795 100644
--- a/src/net/azib/ipscan/fetchers/HostnameFetcher.java
+++ b/src/net/azib/ipscan/fetchers/HostnameFetcher.java
@@ -62,7 +62,10 @@ public class HostnameFetcher extends AbstractFetcher {
 
 	private String resolveWithMulticastDNS(InetAddress ip) {
 		try {
-			return new MDNSResolver().resolve(ip);
+			MDNSResolver resolver = new MDNSResolver();
+			String name = resolver.resolve(ip);
+			resolver.close();
+			return name;
 		}
 		catch (IOException e) {
 			return null;
diff --git a/src/net/azib/ipscan/util/MDNSResolver.java b/src/net/azib/ipscan/util/MDNSResolver.java
index 70b6e9cc..94e138db 100644
--- a/src/net/azib/ipscan/util/MDNSResolver.java
+++ b/src/net/azib/ipscan/util/MDNSResolver.java
@@ -1,13 +1,14 @@
 package net.azib.ipscan.util;
 
 import java.io.ByteArrayOutputStream;
+import java.io.Closeable;
 import java.io.DataOutputStream;
 import java.io.IOException;
 import java.net.DatagramPacket;
 import java.net.DatagramSocket;
 import java.net.InetAddress;
 
-public class MDNSResolver {
+public class MDNSResolver implements Closeable {
 	DatagramSocket mdns = new DatagramSocket();
 	InetAddress mdnsIP = InetAddress.getByName("224.0.0.251");
 	private int mdnsPort = 5353;
@@ -69,6 +70,10 @@ public class MDNSResolver {
 		return decodeName(response, offset, respPacket.getLength() - offset);
 	}
 
+	public void close() {
+		mdns.close();
+	}
+
 	public static void main(String[] args) throws IOException {
 		System.out.println(new MDNSResolver().resolve(InetAddress.getByName("192.168.0.2")));
 	}