Function openssl_sys::SSL_CTX_set_alpn_select_cb__fixed_rust
pub unsafe extern "C" fn SSL_CTX_set_alpn_select_cb__fixed_rust(ssl: *mut SSL_CTX, cb: Option<unsafe extern "C" fn(*mut SSL, *mut *const c_uchar, *mut c_uchar, *const c_uchar, c_uint, *mut c_void) -> c_int>, arg: *mut c_void)
The portability is definied by:
#[cfg(any(ossl102, libressl261))]