https://docs.oracle.com/cd/E36784_01/html/E36875/sasl-auxprop-getctx-3sasl.html
sasl_auxprop_getctx - man pages section 3: Networking Library Functions
The sasl_auxprop_getctx() interface returns an auxiliary property context for the given sasl_conn_t on which the sasl auxiliary property functions can operate....
man pagessaslsectionnetworkinglibrary