We can always get minRtt and friends on all platforms for QUIC, since we use UDP. For HTTP/2 and TCP, we're at the mercy of platform APIs, and not all of those may be consistently available everywhere. We should make those nullable rather than present a bogus value to the user.
We can always get minRtt and friends on all platforms for QUIC, since we use UDP. For HTTP/2 and TCP, we're at the mercy of platform APIs, and not all of those may be consistently available everywhere. We should make those nullable rather than present a bogus value to the user.