java.net.Socket.setSoLinger does not check second parameter for negative value

Name: yyC67448 Date: 09/26/97



The java.net.Socket.setSoLinger(boolean, int) does not check its second
parameter for negative value when its first parameter is true.

Here is the test demonstrating the bug:

-------------------------------- Test.java -----------------------------

import java.net.*;


class test
{

  public static void main(String args[])
  {
    InetAddress sin = null;
    Socket soc = null;
    int value = 0;


    /*
     * Try to get localhost address
     */
    try {
      sin = InetAddress.getLocalHost();
    } catch(Exception e)
    {
      System.out.println("Can not get localhost Address:" + e);
      System.exit(-1);
    }


    /*
     * Hope Telnet service enabled on localhost
     */
    try {
      soc = new Socket(sin, 23, true);
    } catch(Exception e)
    {
      System.out.println("Can not create socket:" + e);
      System.exit(-1);
    }

    /*
     * Try to set negative value
     */
    try {
      soc.setSoLinger(true, -20);
      value = soc.getSoLinger();
    } catch(IllegalArgumentException e)
    {
      try {
soc.close();
      } catch(Exception e1)
      {
System.out.println("Can not close socket:" + e1);
System.exit(-1);
      }
      System.out.println("OKAY");
      System.exit(0);
    }
    catch(Exception e)
    {
      try {
soc.close();
      } catch(Exception e1)
      {
System.out.println("Can not close socket :" + e1);
System.exit(-1);
      }
      System.out.println("Unexpected exception:" + e);
    }
    
    try {
      soc.close();
    } catch(Exception e)
    {
      System.out.println("Can not close socket:" + e);
      System.exit(-1);
    }

    System.out.println("No exceptions. Val = " + value);
    
  }
}



---------------------- Output from the test -----------------
No exceptions. Val = -20
-----------------------------------------------------------------



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