From: Pablo Neira Ayuso <pablo@netfilter.org>
To: Nishit Shah <nishit@elitecore.com>
Cc: netfilter-devel@vger.kernel.org
Subject: Re: Do nfnl_query and nfnl_catch are blocking fuctions ?
Date: Sun, 16 Mar 2008 13:03:50 +0100 [thread overview]
Message-ID: <47DD0CA6.8040002@netfilter.org> (raw)
In-Reply-To: <002901c8859b$11fa98c0$35efca40$@com>
Nishit Shah wrote:
> Yes,
> I am using libnetfilter_conntrack for adding expected connection
> through Application Proxies. Now, sometimes my proxy hangs and when I do gdb
> on the core generated, recvmsg call is in waiting mode.
Does this happen under heavy load? Probably the ack message from netlink
is getting lost. You can change the socket behaviour accessing the
descriptor with nfct_fd(...)
> I have changed libnetfilter_conntrack slightly to make it single
> socket for my Proxy. I do nfct_open at time of proxy start, do
> nfct_create_expectation every time request comes and nfct_close when proxy
> ends.
BTW, not directly related but I suggest you to if you move to the new
API, the old one is deprecated and broken in some specific aspects.
--
"Los honestos son inadaptados sociales" -- Les Luthiers
prev parent reply other threads:[~2008-03-16 12:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-13 12:05 Do nfnl_query and nfnl_catch are blocking fuctions ? Nishit Shah
2008-03-13 16:36 ` Pablo Neira Ayuso
2008-03-14 6:17 ` Nishit Shah
2008-03-16 12:03 ` Pablo Neira Ayuso [this message]
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