Simulate network latency with Apache Tomcat?

Question

Is it possible to configure Apache Tomcat to simulate network latency that a client would normally have when requesting data from server for requests over localhost? I'm trying to test how the front end of a Java Servlet application will respond to requests that have slow response times.

I know I could go in and add Thread.sleep(100) to all of my Servlet Java source files, but I'd rather have a solution that can be configured in Tomcat rather than in my actual application.

Answer 1

You can simulate network latency by using a proxy on your localhost which introduces latency, bandwidth restrictions, and even drop packets.

DonsProxy will do the job. Here's a good article describing how to configure it to simulate a user on a poor network.

Answer 2

You can implement a servlet filter and have it intercept all requests. In each of the request you would be doing this Thread.sleep or something else. All requests to your servlets will be delayed.