Name: asR10013 Date: 12/13/2002


Filed By : J2SE-SQA [###@###.###
JDK : JDK1.4.2-b09
Testbase : RegTest-test
Falling test[s]:
        java/net/Socket/NullHost.java

Regression test java/net/Socket/NullHost.java fails from time to time.

The reason of the failure is that the test closes the server after the first connection:

                while (true) {
                    s = svr.accept();
                    s.close();
                    svr.close(); // !!!
}

The test always fails on our Suse 8 computer (linux-19).
Due to races the test passes on some platforms (i.e. it passes on my Linux RH 7.2 (linux-12)).
But after I had modified the code as follows:

    public NullHost () throws IOException {
        Server s = new Server();
        int port = s.getPort();
        s.start();
        try {
            Socket sock = new Socket((String)null, port);
            sock.close();

            try{ Thread.sleep(1000); }catch(Exception e){}; // !!!

            sock = new Socket((String)null, port, true);
            sock.close();
            sock = new Socket((String)null, port, null, 0);
            sock.close();

the test failed on my Linux RH 7.2 (linux-12) too.

svr.close() should be moved outside the loop.

After I had modified the code of Server.run() as follows:

        public void run() {
            Socket s;
            try {
                while (true) {
                    s = svr.accept();
                    s.close();
                }
            } catch (IOException e) {
            } finally {
                try{ svr.close(); } catch(Exception e){}
            }
        }

the test passes on both Linux RH 7.2 (linux-12) and Suse 8 (linux-19).

Test source location:
=====================
/java/re/jdk/1.4.2/promoted/latest/ws/j2se/test/java/net/Socket/NullHost.java

jtr file location:
==================
/net/jtgb4u4c.sfbay/export/sail15/results/mantis/b09/regtest/linux/suse8.0_gnome_-client_linux-19/workDir/test/java/net/Socket/NullHost.jtr

How to reproduce:
=================
Run the following script (you may need to change its variables)
 
--- script start ---
#!/bin/sh

RESULT_DIR=`pwd`
WORK_DIR=$RESULT_DIR/workDir/test
REPORT_DIR=$RESULT_DIR/reportDir
JT_HOME="/net/linux-15/export/home/java/jct"
JAVA_HOME="/net/linux-15/export/home/java/jdk1.4.2/linux"
TEST_BASE_PATH="/net/linux-15/export/home/java/regtest/test"

TESTWITH=$JAVA_HOME
TESTJAVA=$JAVA_HOME

JTOPTS="-client"
TESTVMOPTS="-client"

CLASSPATH="$JT_HOME/classes:$JT_HOME/lib/javatest.jar:$JT_HOME/lib/jtreg.jar"

export JAVA_HOME
export JT_HOME
export TESTWITH
export CLASSPATH

mkdir -p $WORK_DIR/scratch 2>&1
mkdir -p $WORK_DIR/jtData 2>&1
mkdir -p $REPORT_DIR 2>&1

#rm $WORK_DIR/jtData/ResultCache.jtw 2>&1

cd $WORK_DIR/scratch

$JAVA_HOME/bin/java -cp $CLASSPATH $JTOPTS -DenvVars=TESTJAVAHOME=$JAVA_HOME,TESTVMOPTS=$TESTVMOPTS,DISPLAY=:0,HOME=$HOME/.regtest,PATH=/bin:/usr/bin,TZ=,LC_ALL=en_US,LC_CTYPE=en_US,LANG=en_US,LPDEST= -DDISPLAY=:0 -DlocalHost="linux-19" -Dprogram=jtreg com.sun.javatest.regtest.Main -a -v default -batch -params -w "$WORK_DIR" -r "$REPORT_DIR" -t "$TEST_BASE_PATH" "$TEST_BASE_PATH/java/net/Socket/NullHost.java"

--- script end ---

Test output (jtr part):
=======================
----------System.out:(0/0)----------
----------System.err:(22/1173)----------
java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:305)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:171)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:158)
at java.net.Socket.connect(Socket.java:452)
at java.net.Socket.connect(Socket.java:402)
at java.net.Socket.<init>(Socket.java:309)
at java.net.Socket.<init>(Socket.java:253)
at NullHost.<init>(NullHost.java:71)
at NullHost.main(NullHost.java:61)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.sun.javatest.regtest.MainWrapper$MainThread.run(MainWrapper.java:82)
at java.lang.Thread.run(Thread.java:536)

JavaTest Message: Test threw exception: java.net.ConnectException: Connection refused
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.net.ConnectException: Connection refused
result: Failed. Execution failed: `main' threw exception: java.net.ConnectException: Connection refused


test result: Failed. Execution failed: `main' threw exception: java.net.ConnectException: Connection refused


Specific machine info:
======================
Hostname: linux-19
OS: SuSe 8.0 (GNOME)

======================================================================