in app/com/gu/viewer/proxy/PreviewProxy.scala [18:32]
private def loginCallbackUrl(request: PreviewProxyRequest) =
s"https://${request.requestHost}${routes.Proxy.previewAuthCallback}"
/**
* Transform proxy server relative URI to viewer URI.
*/
private def proxyUriToViewerUri(uri: String) = {
val proxyUri = """^\/proxy(\/.+)$""".r
uri match {
case proxyUri(path) => Some(path)
case _ => None
}
}