lxd/response.go
func ForwardedResponseIfTargetIsRemote(d *Daemon, request *http.Request) Response {
	targetNode := queryParam(request, "target")
	if targetNode == "" {
		return nil
	}

	// Figure out the address of the target node (which is possibly
	// this very same node).
	address, err := cluster.ResolveTarget(d.cluster, targetNode)
	if err != nil {
		return SmartError(err)
	}

	if address != "" {
		// Forward the response.
		cert := d.endpoints.NetworkCert()
		client, err := cluster.Connect(address, cert, false)
		if err != nil {
			return SmartError(err)
		}
		return ForwardedResponse(client, request)
	}

	return nil
}
func ForwardedResponseIfTargetIsRemote(d *Daemon, request *http.Request) Response {
	targetNode := queryParam(request, "target")
	if targetNode == "" {
		return nil
	}

	// Figure out the address of the target node (which is possibly
	// this very same node).
	address, err := cluster.ResolveTarget(d.cluster, targetNode)
	if err != nil {
		return SmartError(err)
	}

	if address != "" {
		// Forward the response.
		cert := d.endpoints.NetworkCert()
		client, err := cluster.Connect(address, cert, false)
		if err != nil {
			return SmartError(err)
		}
		return ForwardedResponse(client, request)
	}

	return nil
}
// ForwardedResponseIfTargetIsRemote redirects a request to the request has a
// targetNode parameter pointing to a node which is not the local one.