Function safe_app::ffi::ipc::encode_unregistered_req

#[no_mangle]
pub unsafe extern "C" fn encode_unregistered_req(
    extra_data: *const u8, 
    extra_data_len: usize, 
    user_data: *mut c_void, 
    o_cb: extern "C" fn(user_data: *mut c_void, result: *const FfiResult, req_id: u32, encoded: *const c_char)
)

Encode AuthReq for an unregistered client.

Callback parameters: user data, error code, request id, encoded request