Function boring_sys::SSL_CTX_set_psk_server_callback

pub unsafe extern "C" fn SSL_CTX_set_psk_server_callback(
    ctx: *mut SSL_CTX,
    cb: Option<unsafe extern "C" fn(ssl: *mut SSL, identity: *const c_char, psk: *mut u8, max_psk_len: c_uint) -> c_uint>
)