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https://issues.apache.org/jira/browse/TS-769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bryan Call resolved TS-769.
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Resolution: Fixed
Resolved according to the description of the bug.
> traffic server loops forever if the origin sends back a 505 and the
> connection is keep-alive
> --------------------------------------------------------------------------------------------
>
> Key: TS-769
> URL: https://issues.apache.org/jira/browse/TS-769
> Project: Traffic Server
> Issue Type: Bug
> Components: HTTP
> Affects Versions: 2.1.8
> Environment: This was observed in the Yahoo! version of traffic server
> Reporter: Bryan Call
> Assignee: Bryan Call
> Fix For: 2.1.9
>
>
> Traffic server tries to downgrade the connection/protocol when it gets back a
> 505 from the origin server. First it removes keep-alive and retries, then
> traffic sever start to downgrade the http protocol version and retry.
> However, another part of the code turns keep-alive back on and traffic server
> will loop turning on and off keep-alive and making the same request to the
> origin server.
> I fixed the issue in the Yahoo! tree by alway downgrade keep-alive and
> protocol version together. This will eventually stop after it has tried
> HTTP/0.9. Also, I added an option to not downgrade and retry at all when
> getting a 505.
> I have to verify that this is also an issue with the Apache tree. I looked
> over the code and it doesn't look like it changed at all from the Yahoo!
> tree, so the bug should also be there.
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