[Hackage] #562: cabal-install update fails going through a HTTP proxy (but not consistently)

[Hackage]

#562: cabal-install update fails going through a HTTP proxy (but not
consistently)
----------------------------+-----------------------------------------------
  Reporter:  acid2          |        Owner:         
      Type:  defect         |       Status:  new    
  Priority:  normal         |    Milestone:         
 Component:  Cabal library  |      Version:  1.6.0.1
  Severity:  normal         |     Keywords:         
Difficulty:  unknown        |   Ghcversion:         
  Platform:                 |  
----------------------------+-----------------------------------------------
 I have installed Cabal, cabal-install and HTTP all from source on my Arch
 Linux machine, which has GHC 6.10.3 installed. When running {{{cabal
 update}}} this will occasionally work, but most often fails with the
 error:

 {{{cabal: user error (Codec.Compression.Zlib: premature end of compressed
 stream)}}}

 In this case, inspecting
 ~/.cabal/packages/hackage.haskell.org/00-index.tar.gz shows a file size
 that varies around 1-15K, rather than the expected ~900K.

 Attached are logs of `cabal-update` failing, and working:

 {{{
 Downloading the latest package list from hackage.haskell.org
 Sending:
 GET http://hackage.haskell.org/packages/archive/00-index.tar.gz HTTP/1.1
 User-Agent: cabal-install/0.6.2
 Host: hackage.haskell.org
 proxy uri host: wwwcache.lancs.ac.uk, port: :8080
 Creating new connection to wwwcache.lancs.ac.uk:8080
 Received:
 HTTP/1.0 200 OK
 Date: Tue, 09 Jun 2009 13:50:46 GMT
 Server: Apache/2.2.3 (Debian)
 Last-Modified: Tue, 09 Jun 2009 09:53:44 GMT
 ETag: "3890c4-f8d7c-55909a00"
 Accept-Ranges: bytes
 Content-Length: 1019260
 Content-Type: application/x-tar
 Content-Encoding: x-gzip
 Age: 854
 X-Cache: HIT from wwwcache.lancs.ac.uk
 X-Cache-Lookup: HIT from wwwcache.lancs.ac.uk:8080
 X-Cache: MISS from wwwcache.lancs.ac.uk
 X-Cache-Lookup: MISS from wwwcache.lancs.ac.uk:8080
 Via: 1.0 wwwcache3.lancs.ac.uk:8080 (squid/2.6.STABLE22), 1.0
 wwwcache1.lancs.ac.uk:8080 (squid/2.7.STABLE4)
 Connection: close
 Downloaded to
 /home/ollie/.cabal/packages/hackage.haskell.org/00-index.tar.gz
 }}}

 {{{
 Downloading the latest package list from hackage.haskell.org
 Sending:
 GET http://hackage.haskell.org/packages/archive/00-index.tar.gz HTTP/1.1
 User-Agent: cabal-install/0.6.2
 Host: hackage.haskell.org
 proxy uri host: wwwcache.lancs.ac.uk, port: :8080
 Creating new connection to wwwcache.lancs.ac.uk:8080
 Received:
 HTTP/1.0 200 OK
 Date: Tue, 09 Jun 2009 13:50:46 GMT
 Server: Apache/2.2.3 (Debian)
 Last-Modified: Tue, 09 Jun 2009 09:53:44 GMT
 ETag: "3890c4-f8d7c-55909a00"
 Accept-Ranges: bytes
 Content-Length: 1019260
 Content-Type: application/x-tar
 Content-Encoding: x-gzip
 Age: 875
 X-Cache: HIT from wwwcache.lancs.ac.uk
 X-Cache-Lookup: HIT from wwwcache.lancs.ac.uk:8080
 Via: 1.0 wwwcache3.lancs.ac.uk:8080 (squid/2.6.STABLE22)
 Proxy-Connection: close
 Downloaded to
 /home/ollie/.cabal/packages/hackage.haskell.org/00-index.tar.gz
 Reading available packages...
 }}}

 I was also asked to try running wget in verbose mode, this is the output:

 {{{
 --2009-06-09 16:17:00--
 http://hackage.haskell.org/packages/archive/00-index.tar.gz
 Resolving wwwcache.lancs.ac.uk... 194.80.32.11, 194.80.32.8, 194.80.32.9,
 ...
 Connecting to wwwcache.lancs.ac.uk|194.80.32.11|:8080... connected.
 Proxy request sent, awaiting response...
   HTTP/1.0 200 OK
   Date: Tue, 09 Jun 2009 13:50:46 GMT
   Server: Apache/2.2.3 (Debian)
   Last-Modified: Tue, 09 Jun 2009 09:53:44 GMT
   ETag: "3890c4-f8d7c-55909a00"
   Accept-Ranges: bytes
   Content-Length: 1019260
   Content-Type: application/x-tar
   Content-Encoding: x-gzip
   Age: 1558
   X-Cache: HIT from wwwcache.lancs.ac.uk
   X-Cache-Lookup: HIT from wwwcache.lancs.ac.uk:8080
   Via: 1.0 wwwcache3.lancs.ac.uk:8080 (squid/2.6.STABLE22)
   Proxy-Connection: close
 Length: 1019260 (995K) [application/x-tar]
 Saving to: `00-index.tar.gz.2'

 100%[===================================================================================================>]
 1,019,260   --.-K/s   in 0.09s

 2009-06-09 16:17:00 (11.1 MB/s) - `00-index.tar.gz.2' saved
 [1019260/1019260]
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/562>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects