Shrihari created TS-4733:
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Summary: 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
Reporter: Shrihari
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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