One way video when using TURN

I can run bowser in iPad Pro. When i run the demo.openwebrtc.org inside the LAN (i.e. bowser on iPad Pro and Chrome browser on Win 7, so STUN case), the performance is very nice. Great job. Thanks a lot.

When i run the same test on WAN (i.e. bowser on iPad Pro at my home and Chrome browser on Win 7 at my friend home, so TURN case), the rtc connection via ICE can be made successfully quickly. However, my friend camera is frozen after a few seconds on bowser. However, my friend can see my camera very smoothly at his side all the times.

Besides, i have developed another webrtc script. I can run it perfectly on desktop browsers. When i run ut in bowser on iPad Pro, i get one-way video issue even in LAN environment (i.e. STUN case). Chrome browser on Win 7 can see my bowser's camera smoothly and clearly after joining the room. However, bowser cannot see the Win7 camera at all.

May i ask what i can check to fix this issue? Do you encounter similar problem?

Thank you very much for your help and advice.

Start by reproducing the reported one-way video in Bowser on an iPad Pro, first with the demo.openwebrtc.org LAN/STUN case and then with the WAN/TURN case. Compare the iPad and Chrome behavior, including the camera that freezes or is not displayed; done means inbound video works reliably in both scenarios.