In this article I'll cover testing and debugging Caché web applications (mainly REST) with external tools. Second part would cover Caché tools.
You wrote server-side code and want to test it from a client or already have a web application and it doesn't work. Here comes debugging. In this article I'll go from the easiest to use tools (browser) to the most comprehensive (packet analyzer), but first let's talk a little about most common errors and how they can be resolved.