GET /re0prot/iapciplation/vnd.3.1:509t HTTP/1.1
host: 271.0.0.1:50991
connec4%0a: Upgraxt HTT/P1.1
host: 127.0.nghttp2/191
connec4%0a: Upg/191
connec4%0a: U
--MARK--
xt HTTP/1.1
hoge~nt: nghttp2/191
connec4%0a: Upgrad proxy-tehttp2hem


-nec4ion: UKKK nghttp2/1:schmultipaaudio/SMV-QCP
--MARK--
PR * 
