[Freeswitch-users] DTLS Problems with Freeswitch v1.8+ and Firefox

[Sergey Safarov]

Is used ICE here?
Negotiation may be blocked by not finished ICE process.

On Thu, Jul 23, 2020 at 5:35 PM Marko Seidenglanz <
marko.seidenglanz at gmail.com> wrote:

> Hi,
>
> We have the following Setup:
>
>    - FreeSWITCH Version 1.10.3-release+git20200511T105455Z129de34d84~64bit
>    (in Docker Container on a Google Compute Engine Instance)
>    - Firefox 78.0.2 (64-Bit) behind NAT-Device
>
>
> We try to establish a WebRTC Audio Connection initiated by Freeswitch.
>
>    1. Send SDP FS->FF
>    2. Set remote description / create local description
>    3. Send SDP FF->FS
>    4. Connectivity checks are started
>
>
> Problem:
>
> Firefox never sends the DTLS "Client Hello" message and so the connection
> fails.
>
> We had no problems with previous versions of Freeswitch. It's only since
> we have updated the system. With Google Chrome everything works as usual.
>
> I've attached two packet captures. One shows the session with Chrome,
> which is successful and the other one with Firefox, which is unfortunately
> not.
>
> Has anyone identified similar problems and can give us assistance?
>
> I have seen that a lot has been changed in the switch_rtp module.
>
> For example, we noticed that the message "Auto Changing audio
> stun/rtp/dtls" no longer appears in the fs_cli.
>
>
> Best regards,
>
> Marko Seidenglanz
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