SERVER:
    static {
        try {
            MARSHALLER_FACTORY = Marshalling.getMarshallerFactory("river", Module.getModuleFromDefaultLoader(ModuleIdentifier.fromString("org.jboss.marshalling.river")).getClassLoader());
        } catch (ModuleLoadException e) {
            throw new RuntimeException(e);
        }
        CONFIG = new MarshallingConfiguration();
        CONFIG.setVersion(2);
        try {
            CONFIG.setClassResolver(new SimpleClassResolver(Module.getModuleFromCurrentLoader(module).getClassLoader()));
        } catch(Exception e) {
            throw new RuntimeException(e);
        }
    }

CLIENT:

    static {
        MARSHALLER_FACTORY = Marshalling.getMarshallerFactory("river");
        CONFIG = new MarshallingConfiguration();
        CONFIG.setVersion(2);
        CONFIG.setClassResolver(new SimpleClassResolver(ProtocolUtils.class.getClassLoader()));
    }

    private ProtocolUtils() {
    }