Re: [xSocket-develop] Too many open files

[Gregor R. <gre...@go...>]

Hi Christiaan,

did you check the behaviour of your application against the 'Too Many Open
Files support pattern' (
http://support.bea.com/application_content/product_portlets/support_patterns/wls/TooManyOpenFilesPattern.html).
If you don't use persistent connections, this could be the reason for the
problem.

Gregor



2008/4/28 Christiaan Willemsen <cwi...@te...>:

> Hi There,
>
> I have an application that can do about 20 simultanious socket
> connections to a http server.
>
> I handle the http stuff myself. This works fine for a while, but then I
> get these exceptions:
>
> 27286 java.net.SocketException: Too many open files
> 27287         at sun.nio.ch.Net.socket0(Native Method)
> 27288         at sun.nio.ch.Net.socket(Net.java:94)
> 27289         at
> sun.nio.ch.SocketChannelImpl.<init>(SocketChannelImpl.java:84)
> 27290         at
>
> sun.nio.ch.SelectorProviderImpl.openSocketChannel(SelectorProviderImpl.java:37)
> 27291         at
> java.nio.channels.SocketChannel.open(SocketChannel.java:105)
> 27292         at
>
> org.xsocket.connection.spi.DefaultIoProvider.openSocket(DefaultIoProvider.java:522)
> 27293         at
>
> org.xsocket.connection.spi.DefaultIoProvider.createClientIoHandler(DefaultIoProvider.java:358)
> 27294         at
>
> org.xsocket.connection.NonBlockingConnection.createClientIoHandler(NonBlockingConnection.java:1181)
> 27295         at
>
> org.xsocket.connection.NonBlockingConnection.<init>(NonBlockingConnection.java:522)
> 27296         at
>
> org.xsocket.connection.NonBlockingConnection.<init>(NonBlockingConnection.java:510)
> 27297         at
>
> org.xsocket.connection.NonBlockingConnection.<init>(NonBlockingConnection.java:326)
> 27298         at
>
> com.technocon.controlserver.util.location.Map24LocationProviderHTTP.getLocation(Map24LocationProviderHTTP.java:86)
> 27299         at
>
> com.technocon.controlserver.backend.udpserver.events.Logpoint.readData(Logpoint.java:83)
> 27300         at
>
> com.technocon.controlserver.backend.udpserver.events.Logpoint.<init>(Logpoint.java:50)
> 27301         at
>
> com.technocon.controlserver.backend.udpserver.UDPEventFactory.composeEvent(UDPEventFactory.java:61)
> 27302         at
>
> com.technocon.controlserver.backend.udpserver.DatagramPackets.extractPackets(DatagramPackets.java:58)
> 27303         at
>
> com.technocon.controlserver.backend.udpserver.DatagramPackets.<init>(DatagramPackets.java:39)
> 27304         at
>
> com.technocon.controlserver.backend.udpserver.UDPBackend.onDatagram(UDPBackend.java:212)
> 27305         at
>
> org.xsocket.datagram.AbstractEndpoint$HandlerProcessor.run(AbstractEndpoint.java:329)
> 27306         at
>
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
> 27307         at
>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
> 27308         at java.lang.Thread.run(Thread.java:619)
>
> I have no clue why this happens, since there are by for not enough
> sockets in use to be able to account for this error
>
> I'm using JDK 6.0 and xsocket 2.0
>
> --
> Christiaan Willemsen
>
>
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