Function SSL_CTX_set_next_proto_select_cb

pub unsafe extern "C" fn SSL_CTX_set_next_proto_select_cb(
    s: *mut ssl_ctx_st,
    cb: Option<unsafe extern "C" fn(*mut ssl_st, *mut *mut u8, *mut u8, *const u8, u32, *mut c_void) -> i32>,
    arg: *mut c_void,
)