- TURN socket needs to recheck TCP socket after returning from background
https://github.com/openpeer/op-services-cpp/issues/11

- TURN socket should refresh binding just before going to background
https://github.com/openpeer/op-services-cpp/issues/16

- TURN socket should refresh permissions before and after going to the background
https://github.com/openpeer/op-services-cpp/issues/17