As well as the standard return codes, some of the functions in the function table can return a range of codes which have no specified meaning. This allows a Liberator Auth Module and a custom client application to provide custom messages for denying access.

_authfuncs::auth_check_read() and _authfuncs::auth_map_object() can both be used in this way. The codes in question are AUTH_USER1 to AUTH_USER5 inclusive.

For instructions on how to implement user-defined return codes within custom StreamLink applications, please refer to the user guides associated with these products.