# How to test service client part?

**URL:** <https://forum.opencyphal.org/t/how-to-test-service-client-part/550>\
**Category:** LibCyphal\
**Created:** [June 30, 2019, 11:05am UTC](https://forum.opencyphal.org/t/how-to-test-service-client-part/550 "2019-06-30T11:05:57Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![raimondas](https://forum.opencyphal.org/letter_avatar_proxy/v4/letter/r/91b2a8/32.png) [@raimondas](https://forum.opencyphal.org/u/raimondas)\
**Post date:** [June 30, 2019, 11:05am UTC](https://forum.opencyphal.org/t/how-to-test-service-client-part/550/1 "2019-06-30T11:05:57Z")

</div>

How to correctly test Service Client part of tutorial ? Using UAVCAN GUI Tool I am trying to use Response but I cannot find any tips to correctly use it.

```auto
periodic(1, uavcan.protocol.file.BeginFirmwareUpdate.Response( ????, ????))

```

How I must correctly define arguments to test example?

---

<div class="post-metadata">

**Author:** ![raimondas](https://forum.opencyphal.org/letter_avatar_proxy/v4/letter/r/91b2a8/32.png) [@raimondas](https://forum.opencyphal.org/u/raimondas)\
**Post date:** [July 3, 2019, 8:44am UTC](https://forum.opencyphal.org/t/how-to-test-service-client-part/550/2 "2019-07-03T08:44:35Z")

</div>

I have managed it with using file server. No need to answer.

---

<div class="post-metadata">

**Author:** ![YGQ](https://forum.opencyphal.org/letter_avatar_proxy/v4/letter/y/97f17d/32.png) [@YGQ](https://forum.opencyphal.org/u/YGQ)\
**Post date:** [July 3, 2019, 9:32am UTC](https://forum.opencyphal.org/t/how-to-test-service-client-part/550/3 "2019-07-03T09:32:25Z")

</div>

After receiving the update request, I get the file path, use the read file service, and wait to receive the file. I am currently in the process.