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https://issues.apache.org/jira/browse/TS-1558?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13489236#comment-13489236
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James Peach commented on TS-1558:
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Uri, with your patch do we still obey proxy.config.http.send_http11_request?
Is HTTP/0.9 the best choice for the final else branch; maybe HTTP/1.1 would be
better?
> use_client_addr breaks control over upstream HTTP protocol version
> ------------------------------------------------------------------
>
> Key: TS-1558
> URL: https://issues.apache.org/jira/browse/TS-1558
> Project: Traffic Server
> Issue Type: Bug
> Components: Core, HTTP
> Affects Versions: 3.3.3, 3.2.3
> Environment: Trunk running on CentOS 6.3, 64bit
> Reporter: Uri Shachar
> Priority: Critical
> Attachments: comment_typos.patch, use_client_version.patch
>
> Original Estimate: 2h
> Remaining Estimate: 2h
>
> If use_client_addr is turned on, we skip the hostdb lookup so we never know
> if the upstream has previously responded with an HTTP/1.1 response.
> This means that unless proxy.config.http.send_http11_requests is set to 1 we
> will always send HTTP/1.0 requests to upstream.
> I'll attach a patch that sets 'upstream server version = client request
> version' (which seems correct for a transparent interception scenario) -- an
> alternative implementation might be to modify the hostdb lookup flow to skip
> the actual DNS resolving and treat the client provided address as a DNS
> provided one -- Comments?
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