Use a buffered inputstream to read from the socket (#795)

* Use a buffered inputstream to read from the socket

Currently the read from the socket is not buffered what can slow down
reading bytes by byte.

This wraps the input stream in the PacketReader in a BufferedInputStream
to read larger chuncks of data to improve performance.

* Fix codacy warnings

Signed-off-by: Jeroen van Erp <jeroen@hierynomus.com>

---------

Signed-off-by: Jeroen van Erp <jeroen@hierynomus.com>
Co-authored-by: Christoph Läubrich <christoph@laeubi-soft.de>
Co-authored-by: Jeroen van Erp <jeroen@hierynomus.com>

src/main/java/com/hierynomus/smbj/transport/PacketReader.java

@@ -15,6 +15,7 @@
  */
 package com.hierynomus.smbj.transport;
 
+import java.io.BufferedInputStream;
 import java.io.InputStream;
 import java.util.concurrent.atomic.AtomicBoolean;
 
@@ -35,7 +36,11 @@ public abstract class PacketReader<D extends PacketData<?>> implements Runnable
     private Thread thread;
 
     public PacketReader(String host, InputStream in, PacketReceiver<D> handler) {
-        this.in = in;
+        if (in instanceof BufferedInputStream) {
+            this.in = in;
+        } else {
+            this.in = new BufferedInputStream(in);
+        }
         this.handler = handler;
         this.thread = new Thread(this, "Packet Reader for " + host);
         this.thread.setDaemon(true);