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https://issues.apache.org/jira/browse/TS-2237?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14048507#comment-14048507
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Sudheer Vinukonda commented on TS-2237:
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Yes, the external URLs should be already encoded - however, internally, I see
code that decodes the URL strings (e.g. UrlMatcher::Match). So, by the time
logging receives the URL, it may be in the decoded format and needs to be
re-encoded.
> URL encoding wrong in squid.blog
> --------------------------------
>
> Key: TS-2237
> URL: https://issues.apache.org/jira/browse/TS-2237
> Project: Traffic Server
> Issue Type: Bug
> Components: Logging
> Reporter: David Carlin
> Priority: Minor
> Fix For: 5.1.0
>
> Attachments: TS-2237.diff
>
>
> I was replaying URLs captured from squid.blog and I noticed I was getting
> 404's for some of them when squid.blog showed a 200 for that request. Turns
> out there is an issue with URL encoding. For example:
> Requesting file 'duck%20sports%20authority.gif' via curl will put this in the
> logs:
> duck%2520sports%2520authority.gif
> The % from %20 (space) in the request is being converted to %25 resulting in
> %2520
> I tested both the %<cquc> and %<cquuc> log fields - same thing happens. I
> tested on ATS 3.2.0 and 3.3.5
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