Name: rl43681 Date: 01/28/2004
FULL PRODUCT VERSION :
java version "1.4.1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1-b21)
Java HotSpot(TM) Client VM (build 1.4.1-b21, mixed mode)
and
java version "1.4.2_03"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02)
Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode)
ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows 2000 [Version 5.00.2195]
A DESCRIPTION OF THE PROBLEM :
Runtime.exec() to start a new java program. The new java program should create a socket connection to another program.
The socket will connect if created and used from the static main method. It will also work if placed in a static method called from main. It will not work if I create an object and have the object execute the same code (which is what I need); it fails both times if the method is static or not static.
If I run the java program from the command line and not by using Runtime.exec, it works beautifully.
If while it is blocking I kill the first vm, then the second vm continues.
ACTUAL -
Blocking
REPRODUCIBILITY :
This bug can be reproduced always.
---------- BEGIN SOURCE ----------
public class ProgA {
public static void main(String[] args) throws Exception {
Runtime rt = Runtime.getRuntime();
Process p = rt.exec("java ProgB");
p.waitFor();
System.out.println("Process Returned");
}
}
///////////////////////////////////////////////////////////////////////
import java.net.*;
import java.io.*;
public class ProgB {
public void service() throws Exception {
//If I move this body of code to main or another static method,
//the program works.
Socket s = new Socket("127.0.0.1", 5000); //Blocking
OutputStream o = s.getOutputStream();
o.write("test data".getBytes() );
s.close();
}
public static void main(String[] args) throws Exception {
ProgB b = new ProgB();
b.service();
}
}
---------- END SOURCE ----------
(Incident Review ID: 229305)
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