fix a pairing issue

make sure we bind the HTTP server to the same address that we told
Bonjour to advertise. otherwise we might end up listening on some rando
interface that may not actually be able to accept connections

Author: ccutrer

src/main/java/com/beowulfe/hap/HomekitServer.java

@@ -40,7 +40,7 @@ public class HomekitServer {
    */
   public HomekitServer(InetAddress localAddress, int port, int nThreads) throws IOException {
     this.localAddress = localAddress;
-    http = new HomekitHttpServer(port, nThreads);
+    http = new HomekitHttpServer(localAddress, port, nThreads);
   }
 
   /**

src/main/java/com/beowulfe/hap/impl/http/impl/HomekitHttpServer.java

@@ -2,11 +2,13 @@
 
 import com.beowulfe.hap.impl.HomekitWebHandler;
 import com.beowulfe.hap.impl.http.HomekitClientConnectionFactory;
+import java.net.InetAddress;
 import java.util.concurrent.CompletableFuture;
 
 public class HomekitHttpServer implements HomekitWebHandler {
 
   private NettyHomekitHttpService service = null;
+  private final InetAddress localAddress;
   private final int port;
   private final int nThreads;
 
@@ -17,15 +19,16 @@ public void stop() {
     }
   }
 
-  public HomekitHttpServer(int port, int nThreads) {
+  public HomekitHttpServer(InetAddress localAddress, int port, int nThreads) {
+    this.localAddress = localAddress;
     this.port = port;
     this.nThreads = nThreads;
   }
 
   @Override
   public CompletableFuture<Integer> start(HomekitClientConnectionFactory clientConnectionFactory) {
     if (service == null) {
-      this.service = NettyHomekitHttpService.create(port, nThreads);
+      this.service = NettyHomekitHttpService.create(localAddress, port, nThreads);
       return this.service.create(clientConnectionFactory);
     } else {
       throw new RuntimeException("HomekitHttpServer can only be started once");

src/main/java/com/beowulfe/hap/impl/http/impl/NettyHomekitHttpService.java

@@ -10,6 +10,7 @@
 import io.netty.handler.logging.LogLevel;
 import io.netty.handler.logging.LoggingHandler;
 import io.netty.util.concurrent.*;
+import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.net.SocketAddress;
 import java.util.concurrent.CompletableFuture;
@@ -23,16 +24,18 @@ class NettyHomekitHttpService {
 
   private static final Logger logger = LoggerFactory.getLogger(NettyHomekitHttpService.class);
   private final ChannelGroup allChannels = new DefaultChannelGroup(GlobalEventExecutor.INSTANCE);
+  private final InetAddress localAddress;
   private final int port;
   private final int nThreads;
 
-  public static NettyHomekitHttpService create(int port, int nThreads) {
-    return new NettyHomekitHttpService(port, nThreads);
+  public static NettyHomekitHttpService create(InetAddress localAddress, int port, int nThreads) {
+    return new NettyHomekitHttpService(localAddress, port, nThreads);
   }
 
-  private NettyHomekitHttpService(int port, int nThreads) {
+  private NettyHomekitHttpService(InetAddress localAddress, int port, int nThreads) {
     bossGroup = new NioEventLoopGroup();
     workerGroup = new NioEventLoopGroup();
+    this.localAddress = localAddress;
     this.port = port;
     this.nThreads = nThreads;
   }
@@ -46,7 +49,7 @@ public CompletableFuture<Integer> create(HomekitClientConnectionFactory connecti
         .childHandler(new ServerInitializer(connectionFactory, allChannels, nThreads))
         .option(ChannelOption.SO_BACKLOG, 128)
         .childOption(ChannelOption.SO_KEEPALIVE, true);
-    final ChannelFuture bindFuture = b.bind(port);
+    final ChannelFuture bindFuture = b.bind(localAddress, port);
     bindFuture.addListener(
         new GenericFutureListener<Future<? super Void>>() {