[zeromq-dev] Reconnect failed after iptables tricks

gonzalo diethelm gdiethelm at dcv.cl
Tue Dec 17 12:42:44 CET 2013


As much as you may think we don't need to see the code, it would be better to let us see it and decide for ourselves.

--
Gonzalo Diethelm
DCV Chile

From: zeromq-dev-bounces at lists.zeromq.org [mailto:zeromq-dev-bounces at lists.zeromq.org] On Behalf Of artemv zmq
Sent: Tuesday, December 17, 2013 5:57 AM
To: ZeroMQ development list
Subject: Re: [zeromq-dev] Reconnect failed after iptables tricks

hello there, devs

do we have any updates here?

2013/12/14 artemv zmq <artemv.zmq at gmail.com<mailto:artemv.zmq at gmail.com>>
hi Justin,

There's no sense  to paste code. Client is - DEALER. Server is ROUTER.  Inside infinite loop client sends a message and await for reply. By turn server -- inside infinite loop receives message and sends answer back.  All socket settings -- by default.  That's it.

2013/12/14 Justin Cook <jhcook at gmail.com<mailto:jhcook at gmail.com>>

Could you please pastebin the code so we can have a look?

--
Justin Cook

+44 7500 960 000<tel:%2B44%207500%20960%20000>
+1 682 738 5380<tel:%2B1%20682%20738%205380>

Sent from a mobile device
On 14 Dec 2013 16:11, "artemv zmq" <artemv.zmq at gmail.com<mailto:artemv.zmq at gmail.com>> wrote:
hi Pieter,

Interface didn't change I believe.   I conducted on server host (which is VirtualBox instace)  following:
>> iptables  -I  INPUT -s <<windows-client-ip>> -j DROP

and after some time re-enabled client by flushing all iptable rules:
>> iptables  -F

That's it..


2013/12/13 Pieter Hintjens <ph at imatix.com<mailto:ph at imatix.com>>
Is it possible that the interface is changed, so the bind is no longer active?

On Fri, Dec 13, 2013 at 1:54 PM, artemv zmq <artemv.zmq at gmail.com<mailto:artemv.zmq at gmail.com>> wrote:
> hi
>
> I was testing simple connection lose scenario  on a simple DEALER-ROUTER
> architecture.
> D was a client on Windows7, R was a server on VirtualBox.
> What happened: I started them both,   saw chatting between them in logs;
> after that I disabled a client ip on server host with "iptables" , ensured
> that there is no more chatting between peers;  after that I had re-enabled
> IP address of the client on server host; then went to logs  expecting to see
> that chatting  began, but .. there was silence.
>
> The question is: is it eligible way to test reconnection? or this is a bug
> in ZMQ core?
>
> BR
> -artemv
>
> PS
> block script: iptables  -I  INPUT -s <<IP-of-client>> -j DROP
> unlock script:  iptables  -F
>
> _______________________________________________
> zeromq-dev mailing list
> zeromq-dev at lists.zeromq.org<mailto:zeromq-dev at lists.zeromq.org>
> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>
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