[PATCH] url: add distribution and version to user-agent request header (BC)

[Mike Hommey]

On Wed, Jul 13, 2016 at 10:18:26PM -0700, Gregory Szorc wrote:
> # HG changeset patch
> # User Gregory Szorc <gregory.szorc at gmail.com>
> # Date 1468473406 25200
> #      Wed Jul 13 22:16:46 2016 -0700
> # Node ID 6ad61d5001b1fbfebf317d0557f158d4b34a0772
> # Parent  52433f89f816e21ca992ac8c4a41cba0345f1b73
> url: add distribution and version to user-agent request header (BC)
> 
> As a server operator, I've always wanted to know what Mercurial
> version clients are running. Unfortunately, there is no easy
> way to discern this today: the best you can do is sniff capabilities
> from getbundle commands and those aren't updated frequently enough
> to tell you anything that interesting.
> 
> This patch adds the distribution name and version to the user-agent
> HTTP request header. We choose "Mercurial" for the distribution
> name because that seems appropriate. The version string comes
> from __version__. It should have no spaces and should therefore be
> safe to include outside of quotes, parenthesis, etc.
> 
> Flagging the patch as BC so it shows up in release notes. This
> change should be backwards compatible. But I'm sure there is a server
> operator somewhere filtering on the existing user-agent request
> header. So I want to make noise about this change.

Did you check it doesn't break on e.g. bitbucket? They do user-agent
sniffing, but I don't know what exactly they are sniffing for (I just
know that if you do mercurial protocol requests with a git UA, it
rejects you)

Mike