I am wondering what is the proper way to setup CA API Gateway to handle OAuth that come with the gateway? To support HA, I have a ELB in front of 2 API Gateway instances. Is it the correct setup for HA support for CA API GW? Seems like calling the OAuth endpoint (e.g. authorize or token) requires HTTPS. Is that mean I shouldn't terminate SSL at ELB? With the setup , I would like to get the remote IP address (not the one belonged to ELB), how can I do that?