[rabbitmq-discuss] RabbitMQ server sending unexpected FIN/ACK

[Gavin M. Roy]

Are you using BlockingConnection? My guess is you're not responding to a
heartbeat request and RabbitMQ is disconnecting you.


On Wed, Mar 5, 2014 at 1:22 PM, James Andres <jamesa at conversocial.com>wrote:

> Hello,
>
> I have a 3 node rabbit 3.2.3 cluster which is working great most of the
> time. Occasionally, however, our clients (Pika 0.9.13 / 0.9.14p1) receive
> an abrupt TCP level disconnect. These FIN/ACK's generally happen between
> start / start-ok or the first tune / tune-ok. There are no messages in the
> rabbitmq server logs around the time of the tcp FIN/ACK.
>
> An sketch of one of our failing connections with any large gaps in timing
> highlighted:
>
>    later ... CLIENT -> SERVER says SYN...
>    later ... SERVER -> CLIENT says SYN/ACK
>    later ... CLIENT -> SERVER says ACK
>    later ... CLIENT -> SERVER says AMQP,Protocol-Header 9-1
>    later ... SERVER -> CLIENT says ACK
>    later ... SERVER -> CLIENT says Connection.Start
>    later ... CLIENT -> SERVER says ACK
> 8s later ... CLIENT -> SERVER says Connection.Start-Ok
>    later ... SERVER -> CLIENT says Connection.Tune
>    later ... CLIENT -> SERVER says ACK
> 2s later ... SERVER -> CLIENT says FIN,ACK
>    later ... CLIENT -> SERVER says ACK
>    later ... CLIENT -> SERVER says Connection.Tune-Ok
>    later ... SERVER -> CLIENT says RST
>    later ... CLIENT -> SERVER says Connection.Open
>    later ... SERVER -> CLIENT says RST
>
> Does anyone know of a good place to start debugging this? Are there
> relevant timeouts I should be aware of?
>
> Much appreciated,
>
> - James
>
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