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https://issues.apache.org/jira/browse/TS-3391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14323266#comment-14323266
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Leif Hedstrom commented on TS-3391:
-----------------------------------
What people have done in the past is to inject a Connection: close in the
request (to origin) or in the response (to client). That will force it to close
it. There's an example in the header_rewrite plugin how to do that.
There is a counter in the SM how many transaction has been complete on a
connection. I don't remember the exact details, but I added an API for it,
TSHttpSsnTransactionCount(). It might be that this only works on the client
side, but maybe this can be generalized, and then exposed as a condition to
header_rewrite (such that you can say if TSHttpSsnTransactionCount() is > 100,
send a Connection: close).
Just a thought.
> Close origin connection after time/request
> ------------------------------------------
>
> Key: TS-3391
> URL: https://issues.apache.org/jira/browse/TS-3391
> Project: Traffic Server
> Issue Type: New Feature
> Components: HTTP
> Reporter: Luca Bruno
> Fix For: sometime
>
>
> Our origin server is a balancer, and sometimes we have to tweak weights of
> the real backend servers.
> I haven't found this kind of option in ATS so I'd like to ask if this idea
> could be accepted.
> The idea is to close an origin connection after some time has passed, or a
> certain number of requests have been made. We're more interested in the fact
> that after X seconds a connection will be closed, and a new one opened.
> This should be quite safe to implement in ATS itself theoretically: if the
> condition has met, remove the connection from the pool for new requests.
> After all requests are complete, close that connection.
> It's not precise, but it guarantees that after a certain time/requests
> eventually that connection will be closed.
> In practice, it will be closed at most after the given time +
> transaction_active_timeout_out if I'm not wrong.
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