[Bug 1567697] Re: libcurl is missing http2 support

[Andriy Tymchenko]

from -V key it looks like current curl in Yakkety is built with GnuTLS

silpol at lorry:~$ curl -V
curl 7.50.1 (x86_64-pc-linux-gnu) libcurl/7.50.1 GnuTLS/3.5.3 zlib/1.2.8 libidn/1.33 librtmp/2.3
Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtmp rtsp smb smbs smtp smtps telnet tftp 
Features: AsynchDNS IDN IPv6 Largefile GSS-API Kerberos SPNEGO NTLM NTLM_WB SSL libz TLS-SRP UnixSockets

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https://bugs.launchpad.net/bugs/1567697

Title:
  libcurl is missing http2 support

Status in curl package in Ubuntu:
  Confirmed

Bug description:
  libcurl supports HTTP/2.0 through libnghttp2, but the package on
  Ubuntu is not compiled with it.

  Alternatively, a libcurl4-(gnutls|openssl)-nghttp2 might be a good
  idea.

  See also: https://curl.haxx.se/docs/http2.html

  curl CLI tool should not need an update, as it already has the
  commandline switches, but when you use them it comes back with
  unsupported protocol.

  drwilco at eris:~$ curl --http2 www.google.com
  curl: (1) Unsupported protocol

  
  drwilco at eris:~$ lsb_release -rd
  Description:	Ubuntu Xenial Xerus (development branch)
  Release:	16.04
  root at eris:~# apt-cache policy libcurl3
  libcurl3:
    Installed: 7.47.0-1ubuntu2
    Candidate: 7.47.0-1ubuntu2
    Version table:
   *** 7.47.0-1ubuntu2 500
          500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
          100 /var/lib/dpkg/status

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