A API enhancement for getting the ip and port for current connected server. Closes #1750.

api/src/main/java/com/velocitypowered/api/proxy/ServerConnection.java

@@ -40,6 +40,16 @@ public interface ServerConnection extends ChannelMessageSource, ChannelMessageSi
    */
   ServerInfo getServerInfo();
 
+  /**
+   * Returns the server info that this connection is currently connected to.
+   * Can be used for getting the resolved IP and port.
+   *
+   * @return the server info that this connection is currently connected to, if available;
+   *         otherwise an empty {@link Optional} if the connection has not yet been established
+   *         or has been closed
+   */
+  Optional<ServerInfo> getConnectedServerInfo();
+
   /**
    * Returns the player that this connection is associated with.
    *

proxy/src/main/java/com/velocitypowered/proxy/connection/backend/VelocityServerConnection.java

@@ -49,6 +49,7 @@
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
 import io.netty.channel.ChannelFutureListener;
+import java.net.InetSocketAddress;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Optional;
@@ -67,6 +68,7 @@ public class VelocityServerConnection implements MinecraftConnectionAssociation,
   private final ConnectedPlayer proxyPlayer;
   private final VelocityServer server;
   private @Nullable MinecraftConnection connection;
+  private @Nullable ServerInfo connectedServerInfo;
   private boolean hasCompletedJoin = false;
   private boolean gracefulDisconnect = false;
   private BackendConnectionPhase connectionPhase = BackendConnectionPhases.UNKNOWN;
@@ -106,6 +108,7 @@ public CompletableFuture<Impl> connect() {
         .addListener((ChannelFutureListener) future -> {
           if (future.isSuccess()) {
             connection = new MinecraftConnection(future.channel(), server);
+            connectedServerInfo = new ServerInfo(registeredServer.getServerInfo().getName(), (InetSocketAddress) future.channel().remoteAddress());
             connection.setAssociation(VelocityServerConnection.this);
             future.channel().pipeline().addLast(HANDLER, connection);
 
@@ -235,6 +238,11 @@ public ServerInfo getServerInfo() {
     return registeredServer.getServerInfo();
   }
 
+  @Override
+  public Optional<ServerInfo> getConnectedServerInfo() {
+    return Optional.ofNullable(connectedServerInfo);
+  }
+
   @Override
   public ConnectedPlayer getPlayer() {
     return proxyPlayer;
@@ -248,6 +256,7 @@ public void disconnect() {
       gracefulDisconnect = true;
       connection.close(false);
       connection = null;
+      connectedServerInfo = null;
     }
   }