diff -r 4afdf0f0c5bc -r 5ef954fad97b src/org/eclipse/jetty/http/HttpParser.java
--- a/src/org/eclipse/jetty/http/HttpParser.java	Mon Nov 07 23:34:48 2016 -0700
+++ b/src/org/eclipse/jetty/http/HttpParser.java	Mon Nov 07 23:49:41 2016 -0700
@@ -90,7 +90,9 @@
 	}
 
 	private JBuffer sliceFromMark() {
-		JBuffer buf = _buffer.sliceFrom(_mark);
+		JBuffer buf = _buffer.duplicate();
+		buf.position(_mark);
+		buf.limit(_buffer.position()-1);
 		_mark = -1;
 		return buf;
 	}

diff -r 4afdf0f0c5bc -r 5ef954fad97b src/org/eclipse/jetty/io/JBuffer.java
--- a/src/org/eclipse/jetty/io/JBuffer.java	Mon Nov 07 23:34:48 2016 -0700
+++ b/src/org/eclipse/jetty/io/JBuffer.java	Mon Nov 07 23:49:41 2016 -0700
@@ -21,6 +21,18 @@
 		this.bb = bb;
 	}
 
+	public int position() {
+		return bb.position();
+	}
+
+	public void position(int i) {
+		bb.position(i);
+	}
+
+	public void limit(int i) {
+		bb.limit(i);
+	}
+
 	public byte[] array() {
 		return bb.hasArray() ? bb.array() : null;
 	}
@@ -145,13 +157,6 @@
 		return n;
 	}
 
-	public final JBuffer sliceFrom(int index) {
-		ByteBuffer dup = bb.duplicate();
-		dup.position(index);
-		dup.limit(bb.position()-1);
-		return new JBuffer(dup);
-	}
-
 	public int readFrom(InputStream in,int max) throws IOException {
 		ByteBuffer dup = bb.duplicate();
 		int put = bb.limit();