FedEx has a new RESTful API. Great! We’re migrating to it at work. Finally, we can throw out SOAP and XML, and use JSON. Great! FedEx didn’t release any client libraries for this, not even in popular languages like PHP or Java. Annoying, but okay. Request a response, and you get headers and JSON. Great! Exactly what you’d expect. But what’s this? If your request results in an error, you get… You get… GZIP? Why? FedEx, why are you compressing 200 bytes of error data? WHY????