iOS 9 marks the deprecation of the sendSynchronousRequest API. There is a new setup for sending asynch http requests via the NSSession API. This will break thrift generated Cocoa because you rely on bubbling up NSExceptions after a blocking request. Now the approved pattern has changed to a callback oriented architecture. There would likely be changes required to both compiler and library in order to accomodate this. You could also just stitch in a synchronous blocking call using a semaphore block like detailed here:
But that's not really in the spirit of why apple is deprecating synch requests.