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https://issues.apache.org/jira/browse/TS-4733?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Leif Hedstrom updated TS-4733:
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Fix Version/s: 7.0.0
> Cache writes fail when client requests IMS and server replies 200
> -----------------------------------------------------------------
>
> Key: TS-4733
> URL: https://issues.apache.org/jira/browse/TS-4733
> Project: Traffic Server
> Issue Type: Bug
> Components: Core
> Affects Versions: 6.2.0
> Reporter: Shrihari
> Fix For: 7.0.0
>
>
> I think this issue happens because of a fix applied in issue TS-3828.
> Imagine a case where the client requests 'IMS' and the cache doesn't have the
> URL. In that case, we remove the IMS and send the request to origin server.
> On receiving the response back, we send 304 to client and THEN write to cache.
> However, when we build 304 response to client, we set
> s->hdr_info.response_content_length = 0.
> Since this call to build_response happens before we setup a tunnel to write
> the data from 'http_server' to 'cache' we lose this information.
> While setting up this tunnel, we rely on the above field to get the size to
> write. However, since we have already zeroed it out we don't write anything
> to the cache.
> I verified that if I use length from the server_response instead of using the
> pre-computed one, it solves the problem. Though, I am not sure if that should
> be the solution. I am still looking into the code to see what is the right
> thing to do.
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