Convert address fields to strings to better manage DNS names

moonlight-common/src/main/java/com/limelight/nvstream/ConnectionContext.java

@@ -7,7 +7,7 @@ import javax.crypto.SecretKey;
 import com.limelight.nvstream.av.video.VideoDecoderRenderer;
 
 public class ConnectionContext {
-	public InetAddress serverAddress;
+	public String serverAddress;
 	public StreamConfiguration streamConfig;
 	public NvConnectionListener connListener;
 	public SecretKey riKey;

moonlight-common/src/main/java/com/limelight/nvstream/NvConnection.java

@@ -223,13 +223,7 @@ public class NvConnection {
 
 				String appName = context.streamConfig.getApp().getAppName();
 
-				try {
-					context.serverAddress = InetAddress.getByName(host);
-				} catch (UnknownHostException e) {
-					context.connListener.connectionTerminated(-1);
-					return;
-				}
-
+				context.serverAddress = host;
 				context.connListener.stageStarting(appName);
 
 				try {
@@ -249,7 +243,7 @@ public class NvConnection {
 				// we must not invoke that functionality in parallel.
 				synchronized (MoonBridge.class) {
 					MoonBridge.setupBridge(videoDecoderRenderer, audioRenderer, connectionListener);
-					MoonBridge.startConnection(context.serverAddress.getHostAddress(),
+					MoonBridge.startConnection(context.serverAddress,
 							context.serverAppVersion, context.serverGfeVersion,
 							context.negotiatedWidth, context.negotiatedHeight,
 							context.negotiatedFps, context.streamConfig.getBitrate(),

moonlight-common/src/main/java/com/limelight/nvstream/http/ComputerDetails.java

@@ -16,8 +16,8 @@ public class ComputerDetails {
 	public Reachability reachability;
 	public String name;
 	public UUID uuid;
-	public InetAddress localAddress;
-	public InetAddress remoteAddress;
+	public String localAddress;
+	public String remoteAddress;
 	public PairingManager.PairState pairState;
 	public String macAddress;
 	public int runningGameId;

moonlight-common/src/main/java/com/limelight/nvstream/http/NvHTTP.java

@@ -10,6 +10,8 @@ import java.net.Inet6Address;
 import java.net.InetAddress;
 import java.net.MalformedURLException;
 import java.net.Socket;
+import java.net.URI;
+import java.net.URISyntaxException;
 import java.security.Principal;
 import java.security.PrivateKey;
 import java.security.SecureRandom;
@@ -46,7 +48,7 @@ import com.squareup.okhttp.ResponseBody;
 public class NvHTTP {
 	private String uniqueId;
 	private PairingManager pm;
-	private InetAddress address;
+	private String address;
 
 	public static final int HTTPS_PORT = 47984;
 	public static final int HTTP_PORT = 47989;
@@ -104,23 +106,21 @@ public class NvHTTP {
 		httpClientWithReadTimeout.setReadTimeout(READ_TIMEOUT, TimeUnit.MILLISECONDS);
 	}
 	
-	public NvHTTP(InetAddress host, String uniqueId, String deviceName, LimelightCryptoProvider cryptoProvider) {
+	public NvHTTP(String address, String uniqueId, String deviceName, LimelightCryptoProvider cryptoProvider) throws IOException {
 		this.uniqueId = uniqueId;
-		this.address = host;
-		
-		String safeAddress;
-		if (host instanceof Inet6Address) {
-			// RFC2732-formatted IPv6 address for use in URL
-			safeAddress = "["+host.getHostAddress()+"]";
-		}
-		else {
-			safeAddress = host.getHostAddress();
-		}
+		this.address = address;
 		
 		initializeHttpState(cryptoProvider);
-		
-		this.baseUrlHttps = "https://" + safeAddress + ":" + HTTPS_PORT;
-		this.baseUrlHttp = "http://" + safeAddress + ":" + HTTP_PORT;
+
+		try {
+			// The URI constructor takes care of escaping IPv6 literals
+			this.baseUrlHttps = new URI("https", null, address, HTTPS_PORT, null, null, null).toString();
+			this.baseUrlHttp = new URI("http", null, address, HTTP_PORT, null, null, null).toString();
+		} catch (URISyntaxException e) {
+			// Encapsulate URISyntaxException into IOException for callers to handle more easily
+			throw new IOException(e);
+		}
+
 		this.pm = new PairingManager(this, cryptoProvider);
 	}
 	
@@ -212,20 +212,17 @@ public class NvHTTP {
 		details.macAddress = getXmlString(serverInfo, "mac");
 
 		// If there's no LocalIP field, use the address we hit the server on
-		String localIpStr = getXmlString(serverInfo, "LocalIP");
-		if (localIpStr == null) {
-			localIpStr = address.getHostAddress();
+		details.localAddress = getXmlString(serverInfo, "LocalIP");
+		if (details.localAddress == null) {
+			details.localAddress = address;
 		}
 		
 		// If there's no ExternalIP field, use the address we hit the server on
-		String externalIpStr = getXmlString(serverInfo, "ExternalIP");
-		if (externalIpStr == null) {
-			externalIpStr = address.getHostAddress();
+		details.remoteAddress = getXmlString(serverInfo, "ExternalIP");
+		if (details.remoteAddress == null) {
+			details.remoteAddress = address;
 		}
 		
-		details.localAddress = InetAddress.getByName(localIpStr);
-		details.remoteAddress = InetAddress.getByName(externalIpStr);
-		
 		try {
 			details.pairState = Integer.parseInt(getXmlString(serverInfo, "PairStatus")) == 1 ?
 					PairState.PAIRED : PairState.NOT_PAIRED;

moonlight-common/src/main/java/com/limelight/nvstream/mdns/MdnsComputer.java

@@ -1,12 +1,12 @@
 package com.limelight.nvstream.mdns;
 
-import java.net.InetAddress;
+import java.net.Inet4Address;
 
 public class MdnsComputer {
-	private InetAddress ipAddr;
+	private Inet4Address ipAddr;
 	private String name;
 	
-	public MdnsComputer(String name, InetAddress addr) {
+	public MdnsComputer(String name, Inet4Address addr) {
 		this.name = name;
 		this.ipAddr = addr;
 	}
@@ -15,7 +15,7 @@ public class MdnsComputer {
 		return name;
 	}
 	
-	public InetAddress getAddress() {
+	public Inet4Address getAddress() {
 		return ipAddr;
 	}
 	

moonlight-common/src/main/java/com/limelight/nvstream/wol/WakeOnLanSender.java

@@ -4,6 +4,7 @@ import java.io.IOException;
 import java.net.DatagramPacket;
 import java.net.DatagramSocket;
 import java.net.InetAddress;
+import java.net.UnknownHostException;
 import java.util.Scanner;
 
 import com.limelight.LimeLog;
@@ -17,28 +18,41 @@ public class WakeOnLanSender {
 	
 	public static void sendWolPacket(ComputerDetails computer) throws IOException {
 		DatagramSocket sock = new DatagramSocket(0);
-		
 		byte[] payload = createWolPayload(computer);
-		// Try both remote and local addresses
-		for (int i = 0; i < 2; i++) {
-			InetAddress addr;
-			if (i == 0) {
-				addr = computer.localAddress;
-			}
-			else {
-				addr = computer.remoteAddress;
-			}
-			
-			// Try all the ports for each address
-			for (int port : PORTS_TO_TRY) {
-				DatagramPacket dp = new DatagramPacket(payload, payload.length);
-				dp.setAddress(addr);
-				dp.setPort(port);
-				sock.send(dp);
+		IOException lastException = null;
+		boolean sentWolPacket = false;
+
+		try {
+			// Try all resolved remote and local addresses
+			for (String unresolvedAddress : new String[] {computer.localAddress, computer.remoteAddress}) {
+				try {
+					for (InetAddress resolvedAddress : InetAddress.getAllByName(unresolvedAddress)) {
+						// Try all the ports for each resolved address
+						for (int port : PORTS_TO_TRY) {
+							DatagramPacket dp = new DatagramPacket(payload, payload.length);
+							dp.setAddress(resolvedAddress);
+							dp.setPort(port);
+							sock.send(dp);
+							sentWolPacket = true;
+						}
+					}
+				} catch (IOException e) {
+					// We may have addresses that don't resolve on this subnet,
+					// but don't throw and exit the whole function if that happens.
+					// We'll throw it at the end if we didn't send a single packet.
+					e.printStackTrace();
+					lastException = e;
+				}
 			}
+		} finally {
+			sock.close();
+		}
+
+		// Propagate the DNS resolution exception if we didn't
+		// manage to get a single packet out to the host.
+		if (!sentWolPacket && lastException != null) {
+			throw lastException;
 		}
-		
-		sock.close();
 	}
 	
 	private static byte[] macStringToBytes(String macAddress) {