Update quic to 1.6.1 and add IPv6 and 0-RTT to the HTTP/3 client#862
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benoitc
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Jun 2, 2026
benoitc
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Bump the quic dependency to 1.6.1. Forward a family (inet|inet6) and happy_eyeballs option into the QUIC connect options so callers can select the address family; quic does DNS and Happy Eyeballs and accepts IPv6 literals. This also fixes a gap where ssl_options never reached H3 on the pooled path. Add 0-RTT and session resumption. The session ticket is captured from the new quic_h3 owner messages and cached in the pool keyed by host/port/ transport, then replayed on the next connection. Real request-in-0-RTT is sent before the connection reports connected on the one-shot hackney_h3 path for bodyless requests, with a single 1-RTT retry on rejection; the pooled path uses the ticket for a resumed handshake. Gated by the zero_rtt option, and an explicit session_ticket overrides the cache. New hackney_h3 functions: early_data_accepted/1, get_session_ticket/1, wait_session_ticket/2. New hackney_pool functions: get_h3_session/4, store_h3_session/5, delete_h3_session/4.
The ubuntu-24.04-arm runner reports ImageOS=ubuntu24-arm64, which setup-beam cannot map, failing the job before it builds. Override it to ubuntu24.
The in-process WebTransport handshake over UDP loopback occasionally stalls under CI load and returns connect_timeout, flaking a random integration subtest. Retry the connect a few times in the test helper.
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