I have been developing RIA applications for quit some years now and ever since i’ve been looking for a good connection debugger. I’ve tried a couple including the netconnection debugger from adobe and Charles but the one who worked best for me was ServiceCapture.

ServiceCapture has a nice simple and clean interface. Easy to comprehend and easy to monitor. It gives you a nice object-hiarchy of the parameters that you send and recieve. And this works for remoting, SOAP and JSON-RPC.

To run it sets the http proxy in IE. In Firefox you have to do this manually which is explained nicely on the website. That the proxy is being set in IE automaticly can be quite frustrating if you are using the help in Flex. The help won’t work because it uses IE. I’ve solved the problem with turning automatic IE setting off under tools>settings>proxy. Since I test mostly in firefox it doesn’t matter to me.

It the end it was a great help. It saved me a lot of time to debug. It’s handy for frontend developers but also backend developers. It gives you great feedback if methods are working or not. So check it out, it’s worth it’s money!