diff --git a/src/main/java/de/taimos/httputils/callbacks/HTTPByteCallback.java b/src/main/java/de/taimos/httputils/callbacks/HTTPByteCallback.java
new file mode 100644
index 0000000..c263b93
--- /dev/null
+++ b/src/main/java/de/taimos/httputils/callbacks/HTTPByteCallback.java
@@ -0,0 +1,16 @@
+package de.taimos.httputils.callbacks;
+
+import org.apache.http.HttpResponse;
+
+import de.taimos.httputils.WS;
+
+public abstract class HTTPByteCallback extends HTTPStatusCheckCallback {
+	
+	@Override
+	protected void checkedResponse(HttpResponse response) {
+		this.byteResponse(WS.getResponseAsBytes(response), response);
+	}
+	
+	protected abstract void byteResponse(byte[] body, HttpResponse response);
+	
+}
diff --git a/src/main/java/de/taimos/httputils/callbacks/HTTPStatusCheckCallback.java b/src/main/java/de/taimos/httputils/callbacks/HTTPStatusCheckCallback.java
new file mode 100644
index 0000000..c344461
--- /dev/null
+++ b/src/main/java/de/taimos/httputils/callbacks/HTTPStatusCheckCallback.java
@@ -0,0 +1,29 @@
+package de.taimos.httputils.callbacks;
+
+import org.apache.http.HttpResponse;
+
+import de.taimos.httputils.HTTPResponseCallback;
+
+public abstract class HTTPStatusCheckCallback implements HTTPResponseCallback {
+	
+	@Override
+	public final void response(HttpResponse response) {
+		int statusCode = response.getStatusLine().getStatusCode();
+		if (statusCode != this.expectedStatus()) {
+			this.invalidStatus(statusCode, response);
+		}
+		this.checkedResponse(response);
+	}
+	
+	protected abstract void checkedResponse(HttpResponse response);
+	
+	protected abstract void invalidStatus(int status, HttpResponse response);
+	
+	/**
+	 * @return the expected status code of the {@link HttpResponse}
+	 */
+	protected int expectedStatus() {
+		return 200;
+	}
+	
+}
diff --git a/src/main/java/de/taimos/httputils/callbacks/HTTPStringCallback.java b/src/main/java/de/taimos/httputils/callbacks/HTTPStringCallback.java
new file mode 100644
index 0000000..396ade9
--- /dev/null
+++ b/src/main/java/de/taimos/httputils/callbacks/HTTPStringCallback.java
@@ -0,0 +1,16 @@
+package de.taimos.httputils.callbacks;
+
+import org.apache.http.HttpResponse;
+
+import de.taimos.httputils.WS;
+
+public abstract class HTTPStringCallback extends HTTPStatusCheckCallback {
+	
+	@Override
+	protected void checkedResponse(HttpResponse response) {
+		this.stringResponse(WS.getResponseAsString(response), response);
+	}
+	
+	protected abstract void stringResponse(String body, HttpResponse response);
+	
+}
diff --git a/src/test/java/de/taimos/httputils/Tester1.java b/src/test/java/de/taimos/httputils/Tester1.java
index 6e219b6..4fa50bb 100644
--- a/src/test/java/de/taimos/httputils/Tester1.java
+++ b/src/test/java/de/taimos/httputils/Tester1.java
@@ -18,6 +18,8 @@
 import org.junit.Assert;
 import org.junit.Test;
 
+import de.taimos.httputils.callbacks.HTTPStringCallback;
+
 /**
  * @author thoeger
  * 
@@ -63,6 +65,39 @@ public void fail(Exception e) {
 		Assert.assertTrue(cdl.await(10, TimeUnit.SECONDS));
 	}
 	
+	/**
+	 * 
+	 */
+	@Test
+	public void testGetAsyncStringCB() throws InterruptedException {
+		final CountDownLatch cdl = new CountDownLatch(1);
+		WS.url("http://www.heise.de").getAsync(new HTTPStringCallback() {
+			
+			@Override
+			public void fail(Exception e) {
+				System.out.println(e);
+				Assert.fail();
+				cdl.countDown();
+			}
+			
+			@Override
+			protected void invalidStatus(int status, HttpResponse response) {
+				System.out.println("Invalid status: " + status);
+				Assert.fail();
+				cdl.countDown();
+			}
+			
+			@Override
+			protected void stringResponse(String body, HttpResponse response) {
+				Assert.assertNotNull(body);
+				Assert.assertFalse(body.isEmpty());
+				cdl.countDown();
+			}
+			
+		});
+		Assert.assertTrue(cdl.await(10, TimeUnit.SECONDS));
+	}
+	
 	/**
 	 * 
 	 */