private static void logAndSetRpcError(Request req, String url, Throwable e, int rpcErrorCode) {
        String message = "Download of '" + url + "' failed: " + Exceptions.toMessageString(e);
        log.log(Level.SEVERE, message);
        req.setError(rpcErrorCode, e.getMessage());
    }
An RPC server that handles URL download requests.

@author Lester Solbakken
config-proxy/src/main/java/com/yahoo/vespa/config/proxy/filedistribution/UrlDownloadRpcServer.java