Builder curl-ares-solaris10-i386 Build #4410

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1. git update ( 16 secs )
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2. Runtest './tests/testcurl.pl --nogitpull ...' ( 6 mins, 23 secs )
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Responsible Users:

1. Aritra Basu

   aritrbas+ghohnoyoudont@cisco.com

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1. Change #268428

   Category	curl
   Changed by	Aritra Basu <aritrbas+ghohnoyoudont@cisco.com>
   Changed at	Wed 27 May 2026 08:49:53
   Repository	https://github.com/curl/curl.git
   Project	curl
   Branch	master
   Revision	e78b1b3eccfa6a2e367a1225ea1b66dafcdac3c4

   Comments

   HTTP/3: add proxy CONNECT and MASQUE CONNECT-UDP support (ngtcp2 QUIC)
   This patch adds two major proxy capabilities to curl (ngtcp2 QUIC):
   - HTTP/3 Proxy CONNECT: Tunnel HTTP/1.1 or HTTP/2 traffic through an
     HTTPS proxy that speaks HTTP/3 (QUIC) using the standard CONNECT
     method over an HTTP/3 connection.
   - MASQUE CONNECT-UDP: Tunnel HTTP/3 (QUIC) traffic through an HTTP
     proxy (speaking HTTP/1.1, HTTP/2, or HTTP/3) using the extended
     CONNECT method with the CONNECT-UDP protocol (RFC9297 & RFC9298).
   
   Public API additions:
   - `CURLPROXY_HTTPS3`: new proxy type constant for HTTP/3 proxy
   - `--proxy-http3`: new CLI flag to negotiate HTTP/3 with HTTPS proxy
   
   The implementation adds two new filters:
   - `H3-PROXY` - enables negotiating HTTP/3 (QUIC) to the proxy and
     running CONNECT/CONNECT-UDP through that proxy transport.
   - `CAPSULE` - dedicated filter inserted between QUIC transport and
     HTTP-PROXY to handle datagram capsule encapsulation/decapsulation.
   
   Here is how the curl filter chaining looks in different scenarios:
   - HTTP/3 Proxy CONNECT (tunneling TCP protocols over QUIC proxy):
     conn -> HTTP/1.1 or HTTP/2  -> SSL -> HTTP-PROXY ->
                                    H3-PROXY -> HAPPY-EYEBALLS -> UDP
   - MASQUE CONNECT-UDP (tunneling QUIC over any proxy):
     conn -> HTTP/3 -> CAPSULE -> HTTP-PROXY -> H3-PROXY ->
                                  HAPPY-EYEBALLS -> UDP
     conn -> HTTP/3 -> CAPSULE -> HTTP-PROXY -> H1-PROXY or H2-PROXY ->
                                  SSL -> HAPPY-EYEBALLS -> TCP
   
   - Both features currently require the ngtcp2 QUIC backend.
   - Both features are experimental (disabled by default). Enable with
     `--enable-proxy-http3`(autotools) or `-DUSE_PROXY_HTTP3=ON`(CMake).
   
   Tests:
   - tests/unit/unit3400.c: Unit tests for capsule protocol encode/decode
   - tests/http/test_60_h3_proxy.py: Comprehensive pytest integration suite
   - tests/http/testenv/h2o.py: Managing h2o instances with HTTP/1.1, HTTP/2,
     and HTTP/3 (QUIC) listeners, proxy.connect and proxy.connect-udp enabled.
   
   References:
     RFC 9297 - HTTP Datagrams and the Capsule Protocol
     RFC 9298 - Proxying UDP in HTTP
     RFC 9000 §16 — Variable-Length Integer Encoding
   
   Signed-off-by: Aritra Basu <aritrbas+gh@cisco.com>
   
   Closes #21153

   Changed files

   • .github/scripts/pyspelling.words
   • CMakeLists.txt
   • configure.ac
   • docs/EXPERIMENTAL.md
   • docs/INSTALL-CMAKE.md
   • docs/cmdline-opts/Makefile.inc
   • docs/cmdline-opts/proxy-http2.md
   • docs/cmdline-opts/proxy-http3.md
   • docs/internals/CONNECTION-FILTERS.md
   • docs/libcurl/curl_version_info.md
   • docs/libcurl/opts/CURLOPT_PROXY.md
   • docs/libcurl/opts/CURLOPT_PROXYTYPE.md
   • docs/libcurl/symbols-in-versions
   • docs/options-in-versions
   • docs/tests/HTTP.md
   • include/curl/curl.h
   • lib/Makefile.inc
   • lib/capsule.c
   • lib/capsule.h
   • lib/cf-capsule.c
   • lib/cf-capsule.h
   • lib/cf-h1-proxy.c
   • lib/cf-h1-proxy.h
   • lib/cf-h2-proxy.c
   • lib/cf-h2-proxy.h
   • lib/cf-h3-proxy.c
   • lib/cf-h3-proxy.h
   • lib/cf-ip-happy.c
   • lib/cf-ip-happy.h
   • lib/connect.c
   • lib/curl_config-cmake.h.in
   • lib/curl_trc.c
   • lib/http.c
   • lib/http.h
   • lib/http2.c
   • lib/http_proxy.c
   • lib/http_proxy.h
   • lib/peer.c
   • lib/peer.h
   • lib/setopt.c
   • lib/url.c
   • lib/version.c
   • lib/vquic/curl_ngtcp2.c
   • lib/vquic/curl_ngtcp2.h
   • lib/vquic/curl_quiche.c
   • lib/vquic/vquic-tls.c
   • lib/vquic/vquic.c
   • lib/vquic/vquic.h
   • lib/vtls/openssl.c
   • lib/vtls/vtls.c
   • lib/vtls/vtls_int.h
   • src/tool_getparam.c
   • src/tool_getparam.h
   • src/tool_listhelp.c
   • tests/data/Makefile.am
   • tests/data/test3400
   • tests/http/CMakeLists.txt
   • tests/http/Makefile.am
   • tests/http/config.ini.in
   • tests/http/conftest.py
   • tests/http/test_60_h3_proxy.py
   • tests/http/testenv/curl.py
   • tests/http/testenv/env.py
   • tests/http/testenv/h2o.py
   • tests/unit/Makefile.inc
   • tests/unit/unit3400.c