Allow to access localAddress and remoteAddress even if the channel is not registered yet

transport/src/main/java/io/netty/channel/socket/aio/AbstractAioChannel.java

@@ -29,7 +29,7 @@ import java.util.concurrent.TimeUnit;
 
 abstract class AbstractAioChannel extends AbstractChannel {
 
-    protected AsynchronousChannel ch;
+    protected volatile AsynchronousChannel ch;
 
     /**
      * The future of the current connection attempt.  If not null, subsequent

transport/src/main/java/io/netty/channel/socket/aio/AioServerSocketChannel.java

@@ -87,6 +87,9 @@ public class AioServerSocketChannel extends AbstractAioChannel implements Server
 
     @Override
     protected SocketAddress localAddress0() {
+        if (ch == null) {
+            return null;
+        }
         try {
             return javaChannel().getLocalAddress();
         } catch (IOException e) {

transport/src/main/java/io/netty/channel/socket/aio/AioSocketChannel.java

@@ -156,6 +156,9 @@ public class AioSocketChannel extends AbstractAioChannel implements SocketChanne
 
     @Override
     protected InetSocketAddress localAddress0() {
+        if (ch == null) {
+            return null;
+        }
         try {
             return (InetSocketAddress) javaChannel().getLocalAddress();
         } catch (IOException e) {
@@ -165,6 +168,9 @@ public class AioSocketChannel extends AbstractAioChannel implements SocketChanne
 
     @Override
     protected InetSocketAddress remoteAddress0() {
+        if (ch == null) {
+            return null;
+        }
         try {
             return (InetSocketAddress) javaChannel().getRemoteAddress();
         } catch (IOException e) {