Bug#712261: uscan: fails with alioth downloads: failed: 406 Not Acceptable

[Ludovic Rousseau]

Package: devscripts
Version: 2.12.6
Severity: important

Hello,

$ cat debian/watch 
version=3
https://alioth.debian.org/frs/?group_id=30105 .*/ccid-(\d.*)\.(?:tgz|tar\.(?:gz|bz2|xz))

$ uscan --report
uscan warning: In watchfile debian/watch, reading webpage
  https://alioth.debian.org/frs/?group_id=30105 failed: 406 Not Acceptable

After a tcpdump/wireshark analysis I get the following HTTP exchange:
GET /frs/?group_id=30105 HTTP/1.1
TE: deflate,gzip;q=0.3
Connection: TE, close
Host: alioth.debian.org
User-Agent: Debian uscan 2.12.6
X-Uscan-Features: enhanced-matching

HTTP/1.1 406 Not Acceptable
Date: Wed, 12 Jun 2013 12:20:01 GMT
Server: Apache/2.2.22 (Debian)
X-Powered-By: PHP/5.4.4-14
Vary: Accept-Encoding
Content-Length: 0
Content-Type: text/html
Connection: close


I guess the recent upgrade of alioth broke uscan.

-- Package-specific info:

--- /etc/devscripts.conf ---

--- ~/.devscripts ---
Not present

-- System Information:
Debian Release: 7.0
  APT prefers stable
  APT policy: (990, 'stable'), (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.2.0-4-amd64 (SMP w/1 CPU core)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages devscripts depends on:
ii  dpkg-dev  1.16.10
ii  libc6     2.13-38
ii  perl      5.14.2-21
ii  python    2.7.3-4

Versions of packages devscripts recommends:
ii  at                        3.1.13-2
ii  dctrl-tools               2.22.2
ii  debian-keyring            2013.04.21
ii  dput                      0.9.6.3+nmu2
ii  equivs                    2.0.9
ii  fakeroot                  1.18.4-2
ii  gnupg                     1.4.12-7
ii  libcrypt-ssleay-perl      0.58-1
ii  libdistro-info-perl       0.10
ii  libjson-perl              2.53-1
ii  libparse-debcontrol-perl  2.005-3
ii  libsoap-lite-perl         0.714-1
ii  liburi-perl               1.60-1
ii  libwww-perl               6.04-1
ii  lintian                   2.5.10.4
ii  man-db                    2.6.2-1
ii  patch                     2.6.1-3
ii  patchutils                0.3.2-1.1
ii  python-debian             0.1.21
ii  python-magic              5.11-2
ii  sensible-utils            0.0.7
ii  strace                    4.5.20-2.3
ii  unzip                     6.0-8
ii  wdiff                     1.1.2-1
ii  wget                      1.13.4-3
ii  xz-utils                  5.1.1alpha+20120614-2

Versions of packages devscripts suggests:
ii  bsd-mailx [mailx]            8.1.2-0.20111106cvs-1
ii  build-essential              11.5
pn  cvs-buildpackage             <none>
pn  devscripts-el                <none>
pn  gnuplot                      <none>
pn  libauthen-sasl-perl          <none>
ii  libfile-desktopentry-perl    0.04-3
pn  libnet-smtp-ssl-perl         <none>
pn  libterm-size-perl            <none>
ii  libtimedate-perl             1.2000-1
ii  libyaml-syck-perl            1.20-1
ii  mutt                         1.5.21-6.2
ii  openssh-client [ssh-client]  1:6.0p1-4
ii  svn-buildpackage             0.8.5
ii  w3m                          0.5.3-8

-- no debconf information