Continued NACK Improvements about interceptor HOT 2 OPEN

Is it normal that the NACK SSRC is random?

I didn't saw the specification, but the receiver SSRC should be shared between reports and nacks, therefore it is random but at a higher level.

Edit: i realized that interceptors work with a variable number of streams, therefore they must be able to generate SSRCs - but they must be shared between NACKs and receiver reports. We have to find a way to make it so.

from interceptor.

@aler9 I think the best way to do this is the Option pattern we use in Pion.

You can see it in GeneratorOption there is also a ResponderOption in the same directory. Instead of doing a 'Configuration Struct' or a bunch of function arguments we do this.

We should add one to set the SSRC. If one isn't set then we can do random!

from interceptor.