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varnishncsa %I and %O option output correctly in HTTP/2 request.
Request by HTTP/1.1.
Request by HTTP/2.0.
Request by HTTP/2.0. (varnishlog)
Set the value to ReqAcct.
Steps to Reproduce (for bugs)
See the Current Behavior above.
There is no way to know total bytes.
This is on purpose for now, because we need to decide how to count things in H2 relative to H1 to give meaningful statistics.
The "protocol overhead" of H1 is nearly non-existent, but in H2 it can be a significant fraction of the traffic and we must decide how we "charge" that in VSL and VSC.