BIO_f_null(3) OpenSSL BIO_f_null(3) NNAAMMEE BIO_f_null - null filter SSYYNNOOPPSSIISS #include BIO_METHOD * BIO_f_null(void); DDEESSCCRRIIPPTTIIOONN _B_I_O___f___n_u_l_l_(_) 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. NNOOTTEESS As may be apparent a null filter BIO is not particularly useful. RREETTUURRNN VVAALLUUEESS _B_I_O___f___n_u_l_l_(_) returns the null filter BIO method. SSEEEE AALLSSOO TBA 1.0.2u 2019-12-20 BIO_f_null(3)