Hi I am creating a webrtc app. But I found if A send offer to B and B send reply answer to A then only A can talk to (stream to) B but B can not talk to A.

But If I also allow B to send an Offer to A then B can communicate (send stream) to A.

Is it the flow now of webrtc offer answer passing.

A --> send offer ---> B 
A <-- send answer <---B
A <--- send offer <---B

Both now can send stream.

But by this flow chart bellow I can not create both side stream. It just create one side stream

A --> send offer ---> B 
A <-- send answer <---B

Here just A can send stream to B