Install a legacy pre/post I/O callback on a BIO (deprecated; prefer BIO_set_callback_ex).

Synopsis

Declared in <openssl/bio.h>

[[deprecated]]
void
BIO_set_callback(
    BIO* b,
    BIO_callback_fn callback);
Warning

Deprecated. Use of this entity is allowed but discouraged.

Parameters

Name

Description

b

BIO whose callback is replaced.

callback

Legacy callback function, or NULL to clear.

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