[sctp-dev] Problem in receiving notifications on SCTP channel events

[Michal Lefler]

Hi.

We use SCTP channel, with asynchronous reads by a selector.

We are using it as we saw in the SCTP example:

 

    private boolean read(SelectionKey k) {

        final SctpChannel ch = ...

        ...

        MessageInfo messageInfo = ch.receive(bb, ch,
associationHandler);

        ...

 

In our  associationHandler  implementation, we override all the methods
in "AbstractNotificationHandler",

and for now, we simply write a log line for each.

 

The problem is that we don't get any immediate notification when network
interfaces are disconnected.

It becomes very problematic when we have  no more connected network
interfaces left,  and we don't get any notification for that.

We do get few notifications after about a minute, which is far too late
for us.

We also don't get any other indication that anything is wrong.

It doesn't seem as if the SCTP implementation notices that anything is
wrong at all.

When the network interfaces are back, the system is not recovering.

 

Is there a way we can get any immediate notification (or any other
indication, such as an exception) when network interfaces are
disconnected?

 

Thanks, Michal.

 

Michal Lefler

Chief Architect / Traffix Systems

T +972(0)9-788-9237, M +972(0)52-534-0905

Skype michal.lefler

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  <http://www.traffixsystems.com/> 

 

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