We’re using mitmproxy to playback recorded sessions.
The live TLS connections to upstream servers were introducing noise into our performance tests so we’re attempting to disable them with the “upstream_cert=false” or “–no-upstream-cert” option (using mitmdump 2.02).
However I noticed that this prevents HTTP/2 playback (http1.1 chosen during alpn).
Is there any way to playback HTTP/2 without connecting to the live upstream servers?