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From "Mikhail Markov" <mikhail.a.mar...@gmail.com>
Subject Re: [classlib][luni] Sending datagrams with 0 length
Date Mon, 19 Feb 2007 11:16:07 GMT
Yes.

Regards,
Mikhail

On 2/19/07, Alexey Petrenko <alexey.a.petrenko@gmail.com> wrote:
>
> I did not quite understand.
> Does your test fail on RI on Win?
>
> SY, Alexey
>
> 2007/2/19, Mikhail Markov <mikhail.a.markov@gmail.com>:
> > Hi!
> >
> > I found a difference between sending datagram packets with zero length
> on
> > Windows and Linux:
> > The test below passes both on RI and Harmony on Linux, but fails on my
> > WinXP:
> > RI: Exception in thread "main" java.net.SocketException: The message is
> > larger than the maximum supported by the underlying transport: Datagram
> send
> > failed
> >        at java.net.PlainDatagramSocketImpl.send(Native Method)
> >        at java.net.DatagramSocket.send(DatagramSocket.java:612)
> >        at Test.main(Test.java:9)
> >
> > Harmony: Exception in thread "main" java.net.SocketException: (10040) A
> > message sent on a datagram socket was larger than the internal message
> > buffer or some other network limit, or the buffer used to receive a
> datagram
> > into was smaller than the datagram itself.
> >        at
> org.apache.harmony.luni.platform.OSNetworkSystem.sendDatagramImpl(Native
> > Method)
> >        at org.apache.harmony.luni.platform.OSNetworkSystem.sendDatagram(
> > OSNetworkSystem.java:155)
> >        at org.apache.harmony.luni.net.PlainDatagramSocketImpl.send(
> > PlainDatagramSocketImpl.java:275)
> >        at java.net.DatagramSocket.send(DatagramSocket.java:450)
> >        at Test.main(Test.java:9)
> >
> > Due to this I have 9 constantly failed testcases from
> DatagramChannelTest
> > (nio module):
> >  testSend_NoServerTwice(),
> >  testSend_NoServerNonBlockingTwice(),
> >  testReceiveSend_Block_Empty(),
> >  testReceiveSend_NonBlock_Empty(),
> >  testReceiveSend_Block_Empty_S2C(),
> >  testReceiveSend_NonBlock_Empty_S2C(),
> >  testReceiveSend_Block_Empty_C2S(),
> >  testReceiveSend_NonBlock_Empty_C2S(),
> >  testReceiveSend_Empty_S2S()
> > trying to send empty datagrams.
> >
> > I've filed the appropriate JIRA
> > https://issues.apache.org/jira/browse/HARMONY-3185, and even provided
> the
> > patch (which seems not correct :-).
> >
> > What should we do with these tests? Perhaps it makes sense to rework
> them to
> > avoid sending empty datagrams?
> >
> > Regards,
> > Mikhail
> >
> > Here is the test:
> > import java.net.DatagramSocket;
> > import java.net.DatagramPacket;
> > import java.net.InetAddress;
> >
> > public class Test {
> >    public static void main(String[] args) throws Exception {
> >        DatagramSocket ds = new DatagramSocket();
> >        DatagramPacket dp = new DatagramPacket(new byte[0], 0,
> > InetAddress.getLocalHost(), 5555);
> >        ds.send(dp);
> >    }
> > }
> >
>

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