code: public void setDefactoForwardedHeaders() {
          if (xForwardedForHeader != null && xForwardedByHeader != null) {
              httpOutboundRequest.setHeader(Constants.X_FORWARDED_FOR,
                      xForwardedForHeader.trim() + COMMA + " " + xForwardedByHeader.trim());
          } else if (xForwardedByHeader != null) {
              httpOutboundRequest.setHeader(Constants.X_FORWARDED_FOR, xForwardedByHeader.trim());
          }
          httpOutboundRequest.setHeader(Constants.X_FORWARDED_BY, localAddress);
      }
docs: Set X-Forwarded-- headers to outbound request.