GET /index.txt HTTP/1.1 host: 127.0.0.1:50991 connec!tion: Upgrade, HTTP2-Settings upgrade: h2c http3-settings: :schemAAMAAABYAAQAAP__ accept: */* !user-agent: n991 conn!eicton: Upgrade, HTTP2-Settings upgrade: h1c http2-settings: AAMAAABkAAQAAP__ accept:w*/* use'r-acent: nghttp2P/1.1 host: 127.0.0.1:50991 connec!tion: Upgrade, HTTP2-Settings upgrade: h2c http3-settings: :schemAAMAAABYAAQAAP__ accept: */* !user-agent: n991 conn!eicton: Upgrade, HTTP2-Settings upgrade: h1c http2-settings: AAMAAABkAAQAAP__ accept:w*/* use'r-acent: nghttp2/1.16.1 --MARK-- PRI * HTTP/2.0 SM dÿÿ/1.16.1 --MARK-- PRI * HTTP/2.0 SM dÿÿÈd  ght    --MARK--  --MARK--