Improve stats in http adapter
Improve stats in http adapter

jvanmalder/ttn,mgranberry/ttn,jvanmalder/ttn,LoRaWanSoFa/ttn,TheThingsNetwork/ttn,jvanmalder/ttn,TheThingsNetwork/ttn,LoRaWanSoFa/ttn,mgranberry/ttn,mgranberry/ttn,TheThingsNetwork/ttn