Let PlayerCredentials house the connecting remote address.

src/org/apollo/net/codec/login/LoginDecoder.java

@@ -6,6 +6,7 @@ import io.netty.channel.ChannelFutureListener;
 import io.netty.channel.ChannelHandlerContext;
 
 import java.math.BigInteger;
+import java.net.InetSocketAddress;
 import java.security.SecureRandom;
 import java.util.List;
 
@@ -18,6 +19,8 @@ import org.apollo.security.PlayerCredentials;
 import org.apollo.util.BufferUtil;
 import org.apollo.util.StatefulFrameDecoder;
 
+import com.google.common.net.InetAddresses;
+
 /**
  * A {@link StatefulFrameDecoder} which decodes the login request frames.
  * 
@@ -174,6 +177,8 @@ public final class LoginDecoder extends StatefulFrameDecoder<LoginDecoderState>
 			int uid = secure.readInt();
 			String username = BufferUtil.readString(secure);
 			String password = BufferUtil.readString(secure);
+			InetSocketAddress socketAddress = (InetSocketAddress) ctx.channel().remoteAddress();
+			String hostAddress = InetAddresses.toAddrString(socketAddress.getAddress());
 
 			if (password.length() < 6 || password.length() > 20 || username.isEmpty() || username.length() > 12) {
 				writeResponseCode(ctx, LoginConstants.STATUS_INVALID_CREDENTIALS);
@@ -193,7 +198,7 @@ public final class LoginDecoder extends StatefulFrameDecoder<LoginDecoderState>
 
 			IsaacRandom encodingRandom = new IsaacRandom(seed);
 
-			PlayerCredentials credentials = new PlayerCredentials(username, password, usernameHash, uid);
+			PlayerCredentials credentials = new PlayerCredentials(username, password, usernameHash, uid, hostAddress);
 			IsaacRandomPair randomPair = new IsaacRandomPair(encodingRandom, decodingRandom);
 
 			out.add(new LoginRequest(credentials, randomPair, reconnecting, lowMemory, release, crcs, version));
@@ -207,7 +212,7 @@ public final class LoginDecoder extends StatefulFrameDecoder<LoginDecoderState>
 	 * @param response The response code to write.
 	 */
 	private void writeResponseCode(ChannelHandlerContext ctx, int response) {
-		ByteBuf buffer = ctx.alloc().buffer(1);
+		ByteBuf buffer = ctx.alloc().buffer(Byte.BYTES);
 		buffer.writeByte(response);
 
 		ctx.write(buffer).addListener(ChannelFutureListener.CLOSE);

src/org/apollo/security/PlayerCredentials.java

@@ -34,6 +34,11 @@ public final class PlayerCredentials {
 	 */
 	private final int usernameHash;
 
+	/**
+	 * The Player's host address, represented as a String.
+	 */
+	private final String hostAddress;
+
 	/**
 	 * Creates a new {@link PlayerCredentials} object with the specified name, password and uid.
 	 * 
@@ -41,13 +46,15 @@ public final class PlayerCredentials {
 	 * @param password The player's password.
 	 * @param usernameHash The hash of the player's username.
 	 * @param uid The computer's uid.
+	 * @param hostAddress The Player's connecting host address.
 	 */
-	public PlayerCredentials(String username, String password, int usernameHash, int uid) {
+	public PlayerCredentials(String username, String password, int usernameHash, int uid, String hostAddress) {
 		this.username = username;
 		encodedUsername = NameUtil.encodeBase37(username);
 		this.password = password;
 		this.usernameHash = usernameHash;
 		this.uid = uid;
+		this.hostAddress = hostAddress;
 	}
 
 	/**
@@ -104,6 +111,15 @@ public final class PlayerCredentials {
 		return usernameHash;
 	}
 
+	/**
+	 * Gets the Player's connecting host address.
+	 * 
+	 * @return The Player's host address, represented as a String.
+	 */
+	public String getHostAddress() {
+		return hostAddress;
+	}
+
 	@Override
 	public int hashCode() {
 		return Long.hashCode(encodedUsername);