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http://jira.codehaus.org/browse/WAGON-264?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=174975#action_174975
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Lee Thompson commented on WAGON-264:
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I believe the problem is the wagon-http-lightweight is ignoring the
DECLINED:FEXT_GZ status code returned by mod_gzip. When this error code is
seen, mod_gzip passed on dynamic compresson since the request is for an already
compressed gzip file.
Wagon requesting mod_gzip on ZIP and JAR files doesn't seem to trigger this
behavior. It would be an optimization to not ask for compression on JAR and
ZIP files as these files are compressed but mod_gzip doesn't seem to know that.
Double compressing consumes time on both the client and server with no
decrease in download payload (download sometimes increases somewhat)
> compressed tarball download problems
> ------------------------------------
>
> Key: WAGON-264
> URL: http://jira.codehaus.org/browse/WAGON-264
> Project: Maven Wagon
> Issue Type: Bug
> Components: wagon-http-lightweight
> Affects Versions: 1.0-beta-2, 1.0-beta-3, 1.0-beta-4, 1.0-beta-5
> Reporter: Lee Thompson
>
> HTTP wagon will uncompress tarballs it downloads, sometimes badly.
> Downloading openssl results in an unpressed download
> $ mvn -X wagon:download-single -Dwagon.fromFile=openssl-0.9.8k.tar.gz
> -Dwagon.url=http://www.openssl.org/source -Dwagon.toDir=./
> $ tar tzf openssl-0.9.8k.tar.gz
> gzip: stdin: not in gzip format
> tar: Child returned status 1
> tar: Error exit delayed from previous errors
> $ tar tf openssl-0.9.8k.tar.gz | more
> openssl-0.9.8k/apps/
> openssl-0.9.8k/apps/app_rand.c
> Downloading expat results in a corrupted file
> mvn -X wagon:download-single -Dwagon.fromFile=expat-1.98.8.tar.gz
> -Dwagon.url=http://prdownloads.sourceforge.net/expat -Dwagon.toDir=./
> $ tar tf expat-1.98.8.tar.gz
> tar: This does not look like a tar archive
> tar: Skipping to next header
> tar: Read 1943 bytes from expat-1.98.8.tar.gz
> tar: Error exit delayed from previous errors
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