[Bug 1567697] [NEW] libcurl is missing http2 support

[DocWilco]

Public bug reported:

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

** Affects: curl (Ubuntu)
     Importance: Undecided
         Status: New

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

Title:
  libcurl is missing http2 support

Status in curl package in Ubuntu:
  New

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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