#debugging

I desperately needed to extract the complete (and very lengthy) command line I had written 6 months ago in a bash shell - which was still running under screen. Read on to see how I eventually made it...

WebhookInbox receives HTTP requests and captures the data for later inspection.

WebhookInbox receives HTTP requests and captures the data for later inspection.

With traceGL you can see all JavaScript codeflow, in a high performance webGL visualiser. Its like an oscilloscope, for code.

With traceGL you can see all JavaScript codeflow, in a high performance webGL visualiser. Its like an oscilloscope, for code.

A few months ago, long before the Firefox debugger had shipped, I had tried to see what it would take to get it to debug B2G, or as we call it now, Firefox OS. The hack proved successful and with time it grew into an important debugging target for us. I demoed it at JSConf last April, but at that time a lot of the debugger frontend functionality had not been available in nightlies. As of yesterday, however, nightly builds of Firefox can debug nightly builds of Firefox OS, both in the device and desktop versions. Let me give you a quick rundown of the necessary steps.

Let's keep this short. Too few websites log JavaScript errors. Let's build a simple system to track client-side errors.

Let's keep this short. Too few websites log JavaScript errors. Let's build a simple system to track client-side errors.

"justniffer is a tcp packet sniffer. It can log network traffic in a 'standard' (web server like) or in a customized way. It can also log response times, useful for tracking network services performances (e.g. web server, application server, etc.)."

"Python logging console for Firebug"

"Firecookie is a an extension for Firebug that makes possible to view and manage cookies in your browser."

"I realized there is only one viable solution, which is to create a network proxy to the phone that allowed me to debug from the comfort of my computer with its big screen and real keyboard."