Expose client protocol version and virtual host

Spigot-API-Patches/0071-Expose-client-protocol-version-and-virtual-host.patch

@@ -0,0 +1,72 @@
+From a5fb4cfb4fb3e299ad9d232c9fc6b815f56544d5 Mon Sep 17 00:00:00 2001
+From: Minecrell <minecrell@minecrell.net>
+Date: Tue, 10 Oct 2017 18:44:42 +0200
+Subject: [PATCH] Expose client protocol version and virtual host
+
+Add a NetworkClient interface that provides access to:
+  - The socket address
+  - The protocol version
+  - The virtual host (the hostname/port the client used to connect
+    to the server)
+
+diff --git a/src/main/java/com/destroystokyo/paper/network/NetworkClient.java b/src/main/java/com/destroystokyo/paper/network/NetworkClient.java
+new file mode 100644
+index 00000000..9072e384
+--- /dev/null
++++ b/src/main/java/com/destroystokyo/paper/network/NetworkClient.java
+@@ -0,0 +1,39 @@
++package com.destroystokyo.paper.network;
++
++import java.net.InetSocketAddress;
++
++import javax.annotation.Nullable;
++
++/**
++ * Represents a client connected to the server.
++ */
++public interface NetworkClient {
++
++    /**
++     * Returns the socket address of the client.
++     *
++     * @return The client's socket address
++     */
++    InetSocketAddress getAddress();
++
++    /**
++     * Returns the protocol version of the client.
++     *
++     * @return The client's protocol version, or {@code -1} if unknown
++     * @see <a href="http://wiki.vg/Protocol_version_numbers">List of protocol
++     *     version numbers</a>
++     */
++    int getProtocolVersion();
++
++    /**
++     * Returns the virtual host the client is connected to.
++     *
++     * <p>The virtual host refers to the hostname/port the client used to
++     * connect to the server.</p>
++     *
++     * @return The client's virtual host, or {@code null} if unknown
++     */
++    @Nullable
++    InetSocketAddress getVirtualHost();
++
++}
+diff --git a/src/main/java/org/bukkit/entity/Player.java b/src/main/java/org/bukkit/entity/Player.java
+index 0c3eb03f..611a5be2 100644
+--- a/src/main/java/org/bukkit/entity/Player.java
++++ b/src/main/java/org/bukkit/entity/Player.java
+@@ -29,7 +29,7 @@ import org.bukkit.scoreboard.Scoreboard;
+ /**
+  * Represents a player, connected or not
+  */
+-public interface Player extends HumanEntity, Conversable, CommandSender, OfflinePlayer, PluginMessageRecipient {
++public interface Player extends HumanEntity, Conversable, CommandSender, OfflinePlayer, PluginMessageRecipient, com.destroystokyo.paper.network.NetworkClient { // Paper - Extend NetworkClient
+ 
+     /**
+      * Gets the "friendly" name to display of this player. This may include
+-- 
+2.14.2
+