vtest and varnish-cache repo relationship

[Julian Wiesener]

Hi,

as i'm working on VTest HTTP/3, this discussion is of particular intrest to me.
Still WIP, i have not shared any code, thus i assume most of you are not aware of my efforts, so thanks for considering my opinion.

I used ngtcp2/nghttp3 and implemented the needed VUDP* equalents for what is VTCP* in Varnish as well as its VTest copy (see lib/vtcp.h).
To me it would make much sense to have it in a shared library, basically the "varnish-lib" idea.
Of course it would mean, that it would be OK, to have (at least optional) dependencies on ngtcp2, nghttp3 and a SSL Library*.
IIRC HAproxy already have an other HTTP/3 implementation, so i would assume they would not be intrested, in using "varnish-lib" outside of VTest,
but there might still be room for collaboration in the future.
For Varnish, i think it would make sense to use the poposed lib for HTTP/3, i would keep the server init (TLS Key reading etc.) out of the shared lib, so Varnish can still use other means (keyless).

* ATM i use WolfSSL as my OS comes with a LibreSSL without Quic support, however, new enough OpenSSL, its derivates and GNUtls can be used with ngtcp2


Julian


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