Hello Eric, or anyone else affected,

Accepted apt into disco-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/apt/1.8.3 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-disco to verification-done-disco. If it does not fix
the bug for you, please add a comment stating that, and change the tag
to verification-failed-disco. In either case, without details of your
testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: apt (Ubuntu Disco)
       Status: In Progress => Fix Committed

** Tags added: verification-needed verification-needed-disco

You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to apt in Ubuntu.

  http:Fix Host header in proxied https connections

Status in apt package in Ubuntu:
  Fix Released
Status in apt source package in Bionic:
  In Progress
Status in apt source package in Disco:
  Fix Committed

Bug description:

  Currently CONNECT requests use the name of the proxy as Host value,
  instead of the origin server's name.

  According to RFC 2616 "The Host field value MUST represent the naming
  authority of the origin server or gateway given by the original URL."

  The current implementation causes problems with some proxy vendors. This
  commit[0] fixes this.

  [0] - https://salsa.debian.org/apt-

  [Test Case]

  Here's one reproducer an impacted user brought to my attention:

  # /etc/environment

  To support application development activities in-house, I had to
  configure Azure CLI APT repository following the instructions from

  $ sudo apt-get update
  $ sudo apt-get install curl apt-transport-https lsb-release gnupg
  $ curl -sL https://packages.microsoft.com/keys/microsoft.asc | \
  $ gpg --dearmor | \
  $ sudo tee /etc/apt/trusted.gpg.d/microsoft.asc.gpg > /dev/null
  $ AZ_REPO=$(lsb_release -cs)
  $ echo "deb [arch=amd64] https://packages.microsoft.com/repos/azure-cli/ $ $ 
AZ_REPO main" | \
  $ sudo tee /etc/apt/sources.list.d/azure-cli.list
  $ sudo apt update

  In the final "apt update" command, APT respects system-wide network
  proxy variables and successfully fetched Canonical repository data
  over HTTP.

  However, it was unable to fetch the newly added Microsoft packages
  repository served via HTTPS.

  By using Wireshark to examine the HTTPS request made by APT, the
  request body reveals as:

  CONNECT packages.microsoft.com:443 HTTP/1.1\r\n
  Host: internal:8080\r\n
  User-Agent: Debian APT-HTTP/1.3 (1.6.11)\r\n

  There also is an automated test case in the package that runs as part
  of autopkgtest that tests a scenario like this, see the commit.

  [Regression Potential]

  * Fix already in debian, and Eoan
  * Has been reviewed/approved by juliank
  * A test package (pre-sru) has been provided to an impacted user, and he 
confirms it solves the situation.

  [Other Info]

  # salsa
  $ git describe --contains 86d4d98060f36c7e71c34af20a1193a75496ef72

  # rmadison apt
  => apt | 1.6.11 | bionic-updates | source, amd64, arm64, armhf, i386, 
ppc64el, s390x
  => apt | 1.8.1 | disco-updates | source, amd64, arm64, armhf, i386, ppc64el, 
  apt | 1.9.1 | eoan | source, amd64, arm64, armhf, i386, ppc64el, s390x

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