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+Title: Proxying requests with Jetty
+Date: 2014-01-24
+Tags: Jetty
+Lang: en
+
+At work we develop a web based software for the automotive industry. On the server side we embed Jetty as HTTP server and Servlet engine. It's easy to configure in code and performs very well.
+
+Recently, we had to integrate a third party solution which comes as a virtual machine. This solution consists of some JavaScript APIs that need to talk to the VM. This setup gets you into problems with the [same origin policy](http://en.wikipedia.org/wiki/Same-origin_policy) quickly.
+
+For the deployment setup we mess around with [Apache](http://httpd.apache.org)'s [mod_proxy](http://httpd.apache.org/docs/2.2/mod/mod_proxy.html). This works but is not really manageable for our development machines.
+
+For development I wrote a couple of simple servlets that accept the request, use the JDK's [HttpURLConnection](http://docs.oracle.com/javase/7/docs/api/java/net/HttpURLConnection.html) to retrieve the content from the VM and pass the resuld back. While this works it was really ugly code.
+
+A bit of googling came up with Jetty's [ProxyServlet](http://www.eclipse.org/jetty/documentation/current/proxy-servlet.html) which looked promising. The real time saver was [Alan Hohn's blog post](http://blog.anvard.org/articles/2013/10/06/jetty-proxy-servlet.html) about how to use the proxy servlet. It allowed me to throw away all of our custom servlets and replace them with a single three-liner. Thanks, man!
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