Add http3 module: HTTP/3 in the Java HTTP Client (JEP 517), opt-in, discovery modes, fallback timings, proxy downgrade and a packet-loss comparison

Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_01KqJyCidz3ZgRyHABv2GVJh
2026-09-30 20:27:46 +00:00
parent c8ff3acf09
commit fadfd05670
25 changed files with 617 additions and 0 deletions
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+$ iptables: DROP 100% of UDP to/from port 4433 (TCP untouched); server is the h3 server
+$ java src/Fallback.java https://localhost:4433/hello 120
+request HTTP_3 (ANY)       -> HTTP_2                                                                 after  3397 ms
+client HTTP_3 (ANY)        -> HTTP_2                                                                 after    46 ms
+request HTTP_3_URI_ONLY    -> java.net.ConnectException: No response from peer for 30 seconds        after 60014 ms