Hi Nils,

Actually, I need it quite often.

Our server works with different client types, as a SFU or a mixing MCU, and the 
guys every day modify something there. Usually "no video" issue arises, and I 
have to guess if they have"improved" some feature, or it's a new browser fix or 
bug. I'd like to see real packet mode and codec profile in the traffic, and 
contents of the RTCP packets, which is often encrypted too, to be sure the 
problem is not there.

I don't think that Firefox Developer being started with a command line flag 
would a big security impact. Escpecially, if it is a special custom build.


On Friday, March 1, 2019 at 11:23:22 PM UTC+3, Nils Ohlmeier wrote:
> Hi Alexander,
> 
> > On 1Mar, 2019, at 09:00, Alexander Abagian <> wrote:
> > I know that Firefox does not have such a useful thing as 
> > -disable-webrtc-encryption. Could somebody recommend a way to modify 
> > Firefox sources to build a custom build with SRTP off ? Best of all if DTLS 
> > would stay on but SRTP does not encrypt RTP. I need to investigate H.264 in 
> > Wireshark.
> > 
> > The way to make a text RTP log and converting it to pcap seems to be too 
> > annoying.
> 
> I see this as user security vs. developer convenience trade off. How often do 
> you as a developer need to have network packets in the clear?
> I would assume you are debugging one problem for a couple of days or weeks. 
> And then you don’t need that feature for a long time any more.
> Where is having the code ready in the build product to disable encryption is 
> an additional risk for the user to be abused.
> 
> And why would you want DTLS with SRTP disabled?
> It’s only needed to negotiate the keys for SRTP and for continuously 
> protecting the data channel.
> 
> Best regards
>   Nils Ohlmeier

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