GetServiceEndpoint gets the endpoint IP or hostname to use for the service.

New returns a SpoofingClient that rewrites requests if the target domain is not `resolveable`.

Response is a stripped down subset of http.Response.

SpoofingClient is a minimal http client wrapper that spoofs the domain of requests for non-resolvable domains.

Interface defines the actions that can be performed by the spoofing client.

ResponseChecker is used to determine when SpoofinClient.Poll is done polling.