HTTP2 with CURL gives "Unsupported Protocol"
Apparently you are not linking with the right version of curl, at least at runtime. That's what the output libcurl/7.38.0 means. Mine has a higher version number there. Try
LD_LIBRARY_PATH=/usr/local/lib curl <whatever> as your command. Or just to be sure:
ldd `which curl` and pay attention to the dependencies that appear listed.
This one really helps me set it up properly
- git clone https://github.com/tatsuhiro-t/nghttp2.git
- cd nghttp2
- autoreconf -i
- automake
- autoconf
- ./configure
- make
sudo make install
- cd ~
- sudo apt-get build-dep curl
- wget http://curl.haxx.se/download/curl-7.46.0.tar.bz2
- tar -xvjf curl-7.46.0.tar.bz2
- cd curl-7.46.0
- ./configure --with-nghttp2=/usr/local --with-ssl
- make
- sudo make install
- sudo ldconfig(to verify)curl --http2 -k -vvv -XPOST https://ip/https://serversforhackers.com/c/curl-with-http2-support
I found curl 7.53.1 for Windows this tool very useful to test the http2 requests.It has pre-compiled builds of curl for Windows built with OpenSSL, ngttp2, zlib & IPv6 support.