# Quick WebRTC Playback with Firefox Reminder

**URL:** <https://community.wowza.com/t/quick-webrtc-playback-with-firefox-reminder/55617>\
**Category:** Wowza Developer Dojo\
**Tags:** webrtc\
**Created:** [July 21, 2020, 11:17pm UTC](https://community.wowza.com/t/quick-webrtc-playback-with-firefox-reminder/55617 "2020-07-21T23:17:12Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Rose\_Power-Wowza\_Com](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/rose_power-wowza_com/32/431_2.png) [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)\
**Post date:** [July 21, 2020, 11:17pm UTC](https://community.wowza.com/t/quick-webrtc-playback-with-firefox-reminder/55617/1 "2020-07-21T23:17:12Z")

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Do note that currently in Wowza Streaming Engine you will need to enable UDP to make WebRTC work in Firefox. WebRTC over TCP on Firefox is not supported at this time.

You can make this change in the Ice Candidate section in Engine Manager when configuring your WebRTC stream. 1. If you need to add UDP as an additional ICE Candidate and make it first priority, you can if you’d like. You can adjust their preferred order using the **Priority** up and down arrows.

 ![Screen Shot 2020-12-10 at 12.50.14 PM](https://us1.discourse-cdn.com/flex002/uploads/wowza1/original/1X/50bedce736643d4f6a8b8612df8741144da65fbe.png)

  
 In the WebRTC application.xml change the IceCandidateIpAddresses value to serverIP,udp.

( Again, know that in Engine Manager, you can click edit for the Ice Candidates and then select both UDP and TCP.)

But, as far as in the xml, you can make the changes in the xml by setting it as follows:

```auto
 serverIP,tcp,1935|serverIP,udp 

```

This will send out both ICE Candidates as being available and if the browser supports TCP it should try TCP first and if not, use the UDP ICE Candidate.

But for Firefox, it will require UDP so make sure you do not have it as TCP only.

Hope this helps!

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**Author:** ![Jannes\_De\_Brabandere](https://avatars.discourse-cdn.com/v4/letter/j/ed655f/32.png) [@Jannes\_De\_Brabandere](https://community.wowza.com/u/Jannes_De_Brabandere)\
**Post date:** [November 13, 2020, 11:39am UTC](https://community.wowza.com/t/quick-webrtc-playback-with-firefox-reminder/55617/2 "2020-11-13T11:39:19Z")

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hi, how can we do this on wowza cloud? we try to do a a low latency streaming, it works fine except on FireFox.

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**Author:** ![Rose\_Power-Wowza\_Com](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/rose_power-wowza_com/32/431_2.png) [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)\
**Post date:** [December 10, 2020, 5:57pm UTC](https://community.wowza.com/t/quick-webrtc-playback-with-firefox-reminder/55617/3 "2020-12-10T17:57:40Z")

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In Cloud Webrtc playback, **Cloud uses only TCP** and Firefox requires UDP. So Firefox in Cloud is not possible.

Firefox can be used in Engine with WebRTC, where you can enable both TCP and UDP as Ice Candidate.