026840e35c
Even though it cannot fall-back to a lower HTTP version automatically. The safer way to upgrade remains via CURLOPT_ALTSVC. CURLOPT_H3 no longer has any bits that do anything and might be removed before we remove the experimental label. Updated the curl tool accordingly to use "--http3". Closes #4197
2.3 KiB
HTTP3 (and QUIC)
Resources
HTTP/3 Explained - the online free book describing the protocols involved.
QUIC implementation - the wiki page describing the plan for how to support QUIC and HTTP/3 in curl and libcurl.
quicwg.org - home of the official protocol drafts
QUIC libraries
QUIC libraries we're experiementing with:
Experimental!
HTTP/3 and QUIC support in curl is considered EXPERIMENTAL until further notice. It needs to be enabled at build-time.
Further development and tweaking of the HTTP/3 support in curl will happen in in the master branch using pull-requests, just like ordinary changes.
ngtcp2 version
Build
- clone ngtcp2 from git (the draft-22 branch)
- build and install ngtcp2's custom OpenSSL version (the quic-draft-22 branch)
- build and install nghttp3
- build and install ngtcp2 according to its instructions
- configure curl with ngtcp2 support:
./configure --with-ngtcp2=<install prefix> - build curl "normally"
Running
Make sure the custom OpenSSL library is the one used at run-time, as otherwise you'll just get ld.so linker errors.
Invoke from command line
curl --http3 https://nghttp2.org:8443/
quiche version
build
Build BoringSSL (it needs to be built manually so it can be reused with curl):
% mkdir -p quiche/deps/boringssl/build
% cd quiche/deps/boringssl/build
% cmake -DCMAKE_POSITION_INDEPENDENT_CODE=on ..
% make -j`nproc`
% cd ..
% mkdir .openssl/lib -p
% cp build/crypto/libcrypto.a build/ssl/libssl.a .openssl/lib
% ln -s $PWD/include .openssl
Build quiche:
% cd ../..
% QUICHE_BSSL_PATH=$PWD/deps/boringssl cargo build --release
Clone and build curl:
% cd ..
% git clone https://github.com/curl/curl
% ./buildconf
% ./configure --with-ssl=$PWD/../quiche/deps/boringssl/.openssl --with-quiche=$PWD/../quiche --enable-debug
% make -j`nproc`
Running
Make an HTTP/3 request.
% src/curl --http3 https://cloudflare-quic.com/
% src/curl --http3 https://facebook.com/
% src/curl --http3 https://quic.aiortc.org:4433/
% src/curl --http3 https://quic.rocks:4433/