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From Emmanuel Lécharny <elecha...@gmail.com>
Subject Re: MINA IoSessions show null as client IP and as local IP
Date Tue, 04 Aug 2015 17:09:52 GMT
Le 04/08/15 18:53, Gowtham Rupavatharam a écrit :
> Sorry may be I should have elaborated
> We have a chat application and we are using *MINA* NioSocketAcceptor on the
> server side to accept the TCP connections from the client. Our chat
> protocol is customized XMPP

Did you have a look at Vysper, which is a full implementation of XMPP
over MINA ? (http://mina.apache.org/vysper-project/index.html)
> here is the code snippet that we are using currently.
>  NioSocketAcceptoracceptor = new NioSocketAcceptor();
> acceptor.setReuseAddress(true);
> acceptor.getSessionConfig().setTcpNoDelay(true);
> acceptor.getSessionConfig().setIdleTime(IdleStatus.READER_IDLE, 60);
>  DefaultIoFilterChainBuilder chain = acceptor.getFilterChain();
>  chain.addFirst("xmpp", new ProtocolCodecFilter(new XMPPCodecFactory()));
> acceptor.bind(new InetSocketAddress(host, port));
> Where XMPPCodecFactory extends DemuxingProtocolCodecFactory and has methods
> for Encoding & Decoding

All looks good here.
> So the server seems to be running very smooth close 2500-3000 connections
> and beyond that it starts to behave weirdly and all connections get dropped
> one by one and client when it tries to reconnect with the server the logs
> show the MINA ioSession as 0x0000007F: nio socket, server, null =>
> and this connection gets closed in few seconds.
> Java server restart doesn't help and the clients on connection re-try the
> server logs shows this above 0x0000007F: nio socket, server, null =>
> Only machine reboot fixes this.
> Usually the MINA log would be something like this (0x0000143C: nio socket,
> server, / => /
> What I had observed was when this issue arises upon checking
> netstat | grep 5222 it shows something like this
> ip-10-63-30-252.ec:5222 [UNKNOWN]:60400 ESTABLISHED
> So not sure where exactly the problem is

How many sessions are running when you encounter the pb ? (I mean,
opened sessions)

What does this command give ?
    netstat -a | grep 5222 | wc -l

You should do something weid with the sessions, like not closing them...
FTR, I have tested MINA with tens of million sessions for hours, and not
a glitch.

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