current nightly NAME BIO_f_null — null filter SYNOPSIS #include <openssl/bio.h> BIO_METHOD * BIO_f_null(void); DESCRIPTION BIO_f_null() returns the null filter BIO method. This is a filter BIO that does nothing. All requests to a null filter BIO are passed through to the next BIO in the chain: this means that a BIO chain containing a null filter BIO behaves just as though the BIO was not there. NOTES As may be apparent, a null filter BIO is not particularly useful. RETURN VALUES BIO_f_null() returns the null filter BIO method.