* [RTCP Feedback for Congestion Control](https://datatracker.ietf.org/doc/html/rfc8888) the standardized alternative to TWCC.
### Interceptor Public API
The public interface is defined in [interceptor.go](https://github.com/pion/interceptor/blob/master/interceptor.go).
The methods you need to satisy are broken up into 4 groups.
*`BindRTCPWriter` and `BindRTCPReader` allow you to inspect/modify RTCP traffic.
*`BindLocalStream` and `BindRemoteStream` notify you of a new SSRC stream and allow you to inspect/modify.
*`UnbindLocalStream` and `UnbindRemoteStream` notify you when a SSRC stream has been removed
*`Close` called when the interceptor is closed.
Interceptors also pass Attributes between each other. These are a collection of key/value pairs and are useful for storing metadata
or caching.
[noop.go](https://github.com/pion/interceptor/blob/master/noop.go) is an interceptor that satisfies this interface, but does nothing.
You can embed this interceptor as a starting point so you only need to define exactly what you need.
[chain.go]( https://github.com/pion/interceptor/blob/master/chain.go) is used to combine multiple interceptors into one. They are called
sequentially as the packet moves through them.
### Examples
The [examples](https://github.com/pion/interceptor/blob/master/examples) directory provides some basic examples. If you need more please file an issue!
You should also look in [pion/webrtc](https://github.com/pion/webrtc) for real world examples.
Pion has an active community on the [Golang Slack](https://invite.slack.golangbridge.org/). Sign up and join the **#pion** channel for discussions and support. You can also use [Pion mailing list](https://groups.google.com/forum/#!forum/pion).
Check out the **[contributing wiki](https://github.com/pion/webrtc/wiki/Contributing)** to join the group of amazing people making this project possible:
