# How to use component 3rdParty paho.mqtt.c

**URL:** <https://forum.legato.io/t/how-to-use-component-3rdparty-paho-mqtt-c/5612>\
**Category:** Legato Application Framework\
**Created:** [February 16, 2021, 1:59pm UTC](https://forum.legato.io/t/how-to-use-component-3rdparty-paho-mqtt-c/5612 "2021-02-16T13:59:04Z")\
**Posts on this page:** 1\
**Showing post:** 11

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**Author:** ![anderson](https://avatars.discourse-cdn.com/v4/letter/a/85f322/32.png) [@anderson](https://forum.legato.io/u/anderson)\
**Post date:** [February 17, 2021, 1:24pm UTC](https://forum.legato.io/t/how-to-use-component-3rdparty-paho-mqtt-c/5612/11 "2021-02-17T13:24:46Z")

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But the session reference, how is it?

```
unknown type name 'mqtt_Session'

```

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