[rabbitmq-discuss] rabbitmq-c APIs hanging during network down

[Alan Antonuk]

On Mon, Mar 17, 2014 at 3:45 AM, Lothe Shashank <
Shashank.Lothe at techmahindra.com> wrote:

>  Hi Alan,
>
> Thanks for your reply. As expected by you these kind of APIs must be
> hanging in other amqp clients as well. I have tested php APIs using
> php-amqp library and noticed the same hanging behaviour.
>

php-amqp is a wrapper around the rabbitmq-c library, and thus not really a
good comparison. You should try it with the Java or .NET clients.

>
> What could be the possible way out for these situations? Issue is raised
> in github for tracking.
>

Enable heartbeats on the client. You can do this by passing a value greater
than 0 to amqp_login(). A default used by the Java client is 600 second, or
10 minutes. It can be set lower than this if necessary. Note that
rabbitmq-c only has partial support for heartbeats: it has nothing in the
background servicing heartbeat events, so it is necessary to have your code
call into the library (or be blocked on a call into the library) more
frequently than the heartbeat interval specified.

More information about heartbeats can be found:
https://www.rabbitmq.com/reliability.html#connection-failures

>
> regards,
> Shashank
>
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