When a customer try to do some operation for closed SocketChannel, the exception message does not seem appropriate.
CONFIGURATION:
JDK5u17/RHEL5
TEST CASE:
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import java.nio.channels.*;
public class TestSocket {
public static void main(String[] args) throws Exception {
SocketChannel sc = SocketChannel.open();
sc.configureBlocking(false);
Selector sel = Selector.open();
sc.register(sel, 0);
sel.selectNow();
sc.close();
sc.socket().setTcpNoDelay(false);
}
}
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REPRODUCE:
Compile the attached test case and run
The following message will show up.
java.net.SocketException: Operation not supported
at sun.nio.ch.Net.setIntOption0(Native Method)
at sun.nio.ch.Net.setIntOption(Net.java:152)
at sun.nio.ch.SocketChannelImpl$1.setInt(SocketChannelImpl.java:372)
at sun.nio.ch.SocketOptsImpl.setBoolean(SocketOptsImpl.java:38)
at sun.nio.ch.SocketOptsImpl$IP$TCP.noDelay(SocketOptsImpl.java:284)
at sun.nio.ch.OptionAdaptor.setTcpNoDelay(OptionAdaptor.java:48)
at sun.nio.ch.SocketAdaptor.setTcpNoDelay(SocketAdaptor.java:268)
at com.sun.enterprise.web.connector.grizzly.SelectorThread.setSocketOptions(SelectorThread.java:1956)
at com.sun.enterprise.web.connector.grizzly.SelectorThread.handleAccept(SelectorThread.java:1517)
....
"Operation not Supported" is EOPNOTSUPP.
So, the message,"Socket is closed" seems appropriate in this case
like the following result in jdk7.
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Exception in thread "main" java.net.SocketException: Socket is closed
at sun.nio.ch.Net.translateToSocketException(Net.java:105)
at sun.nio.ch.SocketAdaptor.setBooleanOption(SocketAdaptor.java:288)
at sun.nio.ch.SocketAdaptor.setTcpNoDelay(SocketAdaptor.java:321)
at TestSocket.main(TestSocket.java:11)
Caused by: java.nio.channels.ClosedChannelException
at sun.nio.ch.SocketChannelImpl.setOption(SocketChannelImpl.java:170)
at sun.nio.ch.SocketAdaptor.setBooleanOption(SocketAdaptor.java:286)
... 2 more
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