sdp | Ruby gem for reading and creating SDP

I am trying to implement a simple messaging mechanism between my browser (peer 1) and another browser (peer 2) on a different network. I am using Google's public STUN servers for learning.

Peer 1 does the following first:

I applied case_when to a text data of thousands of rows to detect strings with multiple conditions and replace them but got a wrong result because case_when doesn't execute the remaining conditions once a condition is met. I have seen a solution in How to detect more than one regex in a case_when statement, but the solution does not have multiplicity of multiple conditions such as in my data.

Any alternative to case_when will be is appreciated.

This is the dummy data:

The code flow doesn't even enter the onIceCandidate function while answering the SDP for webRTC connection. The webRTC is used for Voice calling for VOIP in android and I have also setted up TURN server with viagene website.

So, here I tried to fetch some data from the firestore and when I tried to decode it, it causes some error.

Am new to webRTC and am trying to create a react native app with video calling functionality using this tutorial here as an example to follow https://dipanshkhandelwal.medium.com/video-calling-using-firebase-and-webrtc-14cc2d4afceb

However i keep getting this error on iOS and on android the app just closes once i try to join a call. The error i get on iOS says:

i am trying to use useRef in my react functional component, but when i try to access it I am getting error "TypeError: Cannot read property 'onMonthSelect' of undefined while using "useRef" " .

Here is the code below for this

My app needs a functionality of internet call so I planned to use webRTC and using firebase as signalling server.

In this feature caller is interested in calling the callee. But in webRTC the user needs to use the code to answer the call by send sdp and ice candidate.

But the problem for me is how to notify the user about the incoming offer call. Can I use FCM for notifying the user?

What are the other ways of notifying the user?

We have hanging problem (the app freezes due of main thread lock) with our iOS (swift) native app with OpenVidu implementation (which uses GoogleWebRTC under the hood). The specific conditions required: need to join existing room with at least 8 participants already streaming. With 6 participants it happens less often and almost never with less than 6. It doesn't hang if participants join one by one, only if you join the room with all other participants already streaming. This indicates concurrent nature of the issue.

The GoogleWebRTC hangs on setRemoteDescription call:

I'm working on WebRTC streaming which streams video from a device to a browser. This streaming works in Chromium browsers just fine but fails in Firefox. There is a failure with the SDP exchange which then halts the rest of the connection (no ICE candidates sent after SDP exchange).

There are some issues with Firefox's answer SDP I've found but I haven't discovered a reason for the issues: SDP mentions VP8 but we use H264 only; m=video 0 has port 0 but typically that's non zero; I typically get an a=inactive line; a=sendrecv should probably be a=recvonly; many other lines are missing (for example, ICE-specific lines)

SDP examples below: