Better internal name

src/main/java/org/apache/commons/net/ftp/ModeZSocket.java → src/main/java/org/apache/commons/net/ftp/DeflateSocket.java

@@ -29,19 +29,18 @@
 import java.util.zip.InflaterInputStream;
 
 /**
- * Wrapper class for FTP data channel sockets when using MODE Z. All methods
- * except of {@link #getInputStream()} and {@link #getOutputStream()} are
- * calling the delegate methods directly.
+ * Wrapper class for FTP data channel sockets when compressing data in the "deflate" compression format. All methods except of {@link #getInputStream()} and
+ * {@link #getOutputStream()} are calling the delegate methods directly.
  */
-class ModeZSocket extends Socket {
+class DeflateSocket extends Socket {
 
     static Socket wrap(final Socket plain) {
-        return new ModeZSocket(plain);
+        return new DeflateSocket(plain);
     }
 
     private final Socket delegate;
 
-    private ModeZSocket(final Socket delegate) {
+    private DeflateSocket(final Socket delegate) {
         this.delegate = delegate;
     }
 

src/main/java/org/apache/commons/net/ftp/FTPClient.java

@@ -3421,7 +3421,7 @@ public boolean structureMount(final String pathname) throws IOException {
 
     private Socket wrapSocketIfModeZisEnabled(final Socket plainSocket) {
         if (fileTransferMode == COMPRESSED_MODE_Z_TRANSFER_MODE) {
-            return ModeZSocket.wrap(plainSocket);
+            return DeflateSocket.wrap(plainSocket);
         }
         return plainSocket;
     }