Hi Vadim,
To control the time vpp waits for a close from the app, add to startup.conf tcp
{ closewait-time N }, where N is time in seconds.
With respect to the epoll events, vcl only notifies the app of a close once and
EPOLLHUP is returned whenever a peer closed its end of the session. Could you
provide more details about your use case?
Regards,
Florin
> On Mar 29, 2021, at 6:58 AM, Vadim Platonov <vadim.plato...@kaspersky.com>
> wrote:
>
> Hi,
>
> Could you please clarify the name of startup.conf configuration parameter for
> half-closed session timeout?
>
> Consider:
> On peer FIN vcl should generate EPOLLRDHUP event towards the App
> On full session close vcl should generate EPOLLRDHUP | EPOLLHUP event towards
> the App
>
> Regards,
> Vadim
>
>
> From: Florin Coras <fcoras.li...@gmail.com>
> Sent: Tuesday, March 23, 2021 5:59:49 PM
> To: Vadim Platonov
> Cc: vpp-dev@lists.fd.io
> Subject: Re: [vpp-dev] vppcom epoll half-closed tcp session
>
> Hi Vadim,
>
> When peer initiates the closing of the connection (sends fin), session layer
> notifies vcl about the event and consequently vcl generates an EPOLLHUP |
> EPOLLRDHUP event towards the app, assuming app uses epoll. Outstanding data
> can still be read and new data can be written. Are you looking for something
> else?
>
> Note that TCP waits for a close from the app for 2 seconds by default but can
> be startup.conf configured. If app does not close the session in time, tcp
> cleans up the connection forcefully, otherwise, it keeps on trying to send
> until all outstanding data is delivered or some error is hit.
>
> Regards,
> Florin
>
>> On Mar 23, 2021, at 3:01 AM, Vadim Platonov via lists.fd.io
>> <http://lists.fd.io/> <Vadim.Platonov=kaspersky....@lists.fd.io
>> <mailto:Vadim.Platonov=kaspersky....@lists.fd.io>> wrote:
>>
>> Hi,
>>
>> Is there any way to know that vppcom epoll tcp session is half-closed? I
>> mean the supporting of EPOLLRDHUP.
>>
>> Thanks,
>> Vadim.
>>
>>
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