How to measure bandwidth of a WebRTC data channel

Question

Is there a best way to measure incoming or outgoing message size of a WebRTC message?

Answer 1

I ended up altering PeerJS to return a Blob on connection.send. This blob has a size parameter, in bytes. I don't know (yet) if this is exactly the size-on wire, but it seems like a good start.

https://developer.mozilla.org/en-US/docs/Web/API/Blob.size

Answer 2

Two possible options

1. You have chrome://webrtc-internals there you can see the incoming and outgoing throughput of your data channel: http://imgur.com/2xrpgNz
2. By message size you mean just your application's payload? or including SCTP, IP, etc' overheads?