the hostname that will be used for the Host header. Leave as default or set as "" to not set a Host header
underlying com.twitter.finagle.Service
. This HttpClient DOES NOT manage the lifecycle of httpService.
optional retry policy if the service fails to get a successful response
headers to add to every request
object mapper com.twitter.finatra.jackson.ScalaObjectMapper
A simple HTTP client.
Some servers won't handle requests properly if the Host header is not set