diff --git a/pom.xml b/pom.xml
index 97ff6fb..8687df3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -35,7 +35,7 @@
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <version.jackson>2.8.8.1</version.jackson>
     <version.maven-shade-plugin>3.0.0</version.maven-shade-plugin> 
-    <version.undertow>1.2.5.Final</version.undertow>
+    <version.undertow>1.4.13.Final</version.undertow>
   </properties>
     
 	<build>
diff --git a/src/main/java/io/sinistral/proteus/server/Extractors.java b/src/main/java/io/sinistral/proteus/server/Extractors.java
index 37872a9..5ae6922 100644
--- a/src/main/java/io/sinistral/proteus/server/Extractors.java
+++ b/src/main/java/io/sinistral/proteus/server/Extractors.java
@@ -344,7 +344,7 @@ public static  Path filePath(final HttpServerExchange exchange, final String nam
 	{
 		try
 		{
-			return exchange.getAttachment(FormDataParser.FORM_DATA).get(name).getFirst().getFile().toPath();
+			return exchange.getAttachment(FormDataParser.FORM_DATA).get(name).getFirst().getPath();
 		} catch(NullPointerException e)
 		{
 			throw new IllegalArgumentException("Missing parameter " + name, e);
diff --git a/src/main/java/io/sinistral/proteus/server/ServerRequest.java b/src/main/java/io/sinistral/proteus/server/ServerRequest.java
index 6d888cb..1cd724a 100644
--- a/src/main/java/io/sinistral/proteus/server/ServerRequest.java
+++ b/src/main/java/io/sinistral/proteus/server/ServerRequest.java
@@ -162,12 +162,16 @@ private void extractBytes() throws IOException
 	                    	
 	 	                    ByteBuffer buffer = ByteBuffer.allocate(pos);
 	 	                    
-	 	                   ByteBuffer src = buf.duplicate();
-	 	                   src.position(0);
-	 	                   src.limit(0 + pos);
-	 	                   buffer.put(src);
+	 	                   int nTransfer = Math.min(buffer.remaining(), buf.remaining());
+		 	                  if (nTransfer > 0)
+		 	                  {
+		 	                	 buffer.put(buf.array(), 
+		 	                	           buf.arrayOffset()+buf.position(), 
+		 	                                  nTransfer);
+		 	                	buf.position(buf.position()+nTransfer);
+		 	                  }
 
-	                    	//System.arraycopy(buf.array(), 0, buffer.array(), 0, pos);
+	                    //	System.arraycopy(buf.array(), 0, buffer.array(), 0, pos);
 	                    	
 	    	                exchange.putAttachment(BYTE_BUFFER_KEY, buffer);
 	    	                
@@ -188,7 +192,7 @@ private void parseMultipartForm() throws IOException
 		
 		this.exchange.startBlocking();
 		final FormDataParser formDataParser = new MultiPartParserDefinition()
-				.setTempFileLocation(new File(TMP_DIR))
+				.setTempFileLocation(new File(TMP_DIR).toPath())
 				.setDefaultEncoding(CHARSET)
 				.create(this.exchange);
 
diff --git a/src/main/java/io/sinistral/proteus/server/handlers/ServerDefaultResponseListener.java b/src/main/java/io/sinistral/proteus/server/handlers/ServerDefaultResponseListener.java
index 713995f..651d69b 100644
--- a/src/main/java/io/sinistral/proteus/server/handlers/ServerDefaultResponseListener.java
+++ b/src/main/java/io/sinistral/proteus/server/handlers/ServerDefaultResponseListener.java
@@ -20,7 +20,6 @@
 import io.sinistral.proteus.server.predicates.ServerPredicates;
 import io.undertow.server.DefaultResponseListener;
 import io.undertow.server.HttpServerExchange;
-import io.undertow.util.AttachmentKey;
 import io.undertow.util.Headers;
 import io.undertow.util.StatusCodes;
 
@@ -34,8 +33,6 @@ public class ServerDefaultResponseListener implements DefaultResponseListener
 	private static Logger log = LoggerFactory.getLogger(ServerDefaultResponseListener.class.getCanonicalName());
  
 
-   public static  AttachmentKey<Throwable> EXCEPTION = AttachmentKey.create(Throwable.class);
-
 	@Inject
 	protected XmlMapper xmlMapper;
 	 
@@ -47,9 +44,9 @@ public boolean handleDefaultResponse(HttpServerExchange exchange)
              return false;
          }
 		   
-         if (exchange.getResponseCode() >= 400) {
+         if (exchange.getStatusCode() >= 400) {
               
-        	 Throwable throwable = exchange.getAttachment(EXCEPTION);
+        	 Throwable throwable = exchange.getAttachment(DefaultResponseListener.EXCEPTION);
         	 
         	 if( throwable == null )
         	 {
@@ -70,7 +67,7 @@ public boolean handleDefaultResponse(HttpServerExchange exchange)
         	 
         	 if(throwable instanceof IllegalArgumentException )
         	 {
-        		 exchange.setResponseCode(StatusCodes.BAD_REQUEST);
+        		 exchange.setStatusCode(StatusCodes.BAD_REQUEST);
         	 }
         	 
         	 if( ServerPredicates.ACCEPT_XML_EXCLUSIVE_PREDICATE.resolve(exchange) )
diff --git a/src/main/java/io/sinistral/proteus/services/AssetsService.java b/src/main/java/io/sinistral/proteus/services/AssetsService.java
index f41861b..8b3975d 100644
--- a/src/main/java/io/sinistral/proteus/services/AssetsService.java
+++ b/src/main/java/io/sinistral/proteus/services/AssetsService.java
@@ -12,8 +12,7 @@
 import com.typesafe.config.Config;
 
 import io.sinistral.proteus.server.endpoints.EndpointInfo;
-import io.undertow.predicate.Predicate; 
-import io.undertow.server.HttpServerExchange;
+import io.undertow.predicate.TruePredicate;
 import io.undertow.server.RoutingHandler;
 import io.undertow.server.handlers.resource.FileResourceManager;
 import io.undertow.server.handlers.resource.ResourceHandler;
@@ -25,21 +24,7 @@
  */
 public class AssetsService extends BaseService implements Supplier<RoutingHandler>
 {
-	private static class TruePredicate implements Predicate {
 
-	    public static final TruePredicate INSTANCE = new TruePredicate();
-
-	    public static TruePredicate instance() {
-	        return INSTANCE;
-	    }
-
-	    @Override
-	    public boolean resolve(final HttpServerExchange value) {
-	        return true;
-	    }
- 
-	}
-	
 	@Inject
 	@Named("registeredEndpoints")
 	protected Set<EndpointInfo> registeredEndpoints;
@@ -66,9 +51,9 @@ public RoutingHandler get()
 		final String assetsDirectoryName = serviceConfig.getString("dir") ;
 		final Integer assetsCacheTime = serviceConfig.getInt("cache.time");
 		
-		final FileResourceManager fileResourceManager = new FileResourceManager(Paths.get(assetsDirectoryName).toFile(),1024l);
+		final FileResourceManager fileResourceManager = new FileResourceManager(Paths.get(assetsDirectoryName).toFile());
 
-		router.add(Methods.GET, assetsPath + "/*", io.undertow.Handlers.rewrite("regex['" + assetsPath  +  "/(.*)']", "/$1", getClass().getClassLoader(), new ResourceHandler(fileResourceManager)
+		router.add(Methods.GET, assetsPath + "/*", io.undertow.Handlers.rewrite("regex('" + assetsPath  +  "/(.*)')", "/$1", getClass().getClassLoader(), new ResourceHandler(fileResourceManager)
 		.setCachable(TruePredicate.instance())
 		.setCacheTime(assetsCacheTime)
 		));