Status of 2.X?

[ibc]

Hi, which is the status of the 2.x version? is it production/testing ready?

The API is much better and clean, with proper SRTP_ and srtp_ prefixes for all the exported stuff. Good work.

Just a question: does 2.x still handle SSRC globally? 1.x handles them globally, which means that the same SSRC cannot be used within different SRTP sessions (this is not cool when it comes to a SFU server architecture, in which the server relays an incoming stream to N endpoints, having to rewrite the incoming SSRC to N different values).

[jfigus]

You're probably right, it's time to release 2.0.0. There haven't been many issues popping up on the master branch and the code has been there for quite some time. I'll do the release in the near future.

[ibc]

May you please clarify regarding my question above (global or per session SSRC table)?

:)

[jfigus]

The SSRC is global to srtp_ctx_t. The application can instantiate multiple srtp_ctx_t (a.k.a. srtp_t) if needed. Therefore, I wouldn't conclude that SSRC is handled globally by the library. There are currently no plans to change this hierarchy.

[ibc]

The SSRC is global to srtp_ctx_t. The application can instantiate multiple srtp_ctx_t (a.k.a. srtp_t) if needed.

Sorry, my fault. Just a simple question:

• I create a srtp_t with policy ssrc_any_inbound.
• I receive a SRTP packet with ssrc 1234 and unprotect it.
  • Here I assume that a new srtp_stream_t is created with ssrc 1234 within the srtp_t session.
• Later I call srtp_remove_stream(session, 1234).

Will the latest call remove the internally created srtp_stream_t session so I can start receiving again packets with ssrc 1234 with a 100% reseted stream and sequence numbers?

Thanks a lot.

[ibc]

Therefore, I wouldn't conclude that SSRC is handled globally by the library. There are currently no plans to change this hierarchy.

And I hope such a hierarchy is never changed :)

[jfigus]

In theory you're proposal should work. I've never tested this exact flow myself. But assuming you have the stream template setup right, it should work.

[jfigus]

2.0.0 has been released.

[ibc]

Thanks!

[ukreator]

@ibc make sure you call srtp_remove_stream(session, htonl(1234)). See #105 for details

[ibc]

Thanks a lot @ukreator