[kaffe] [PATCH] java.net.DatagramSocket:setBroadcast

Michal Schmidt xschmi00 at stud.feec.vutbr.cz
Mon May 10 07:41:01 PDT 2004


I'm a beginner in Java and I'm new to Kaffe. I tried running JLink 
(http://user.it.uu.se/~alse7905/JLink/) under Kaffe. At first it didn't 
work because of missing implementation of javax.swing.*. I modified the 
JLink source and removed all references to javax.swing. The JLink GUI 
wasn't that important for me anyway. Then I hit another problem - Kaffe 
doesn't implement method setBroadcast in java.net.DatagramSocket correctly.
I've fixed this and now it works for me. The needed changes are very 
small. I'm attaching a patch against kaffe-1.1.4 from Debian unstable.
I've also created a little testing program, which is attached too.
Without the patch it gives this output:

Socket created
First sent
java.net.SocketException: Unknown socket option
    at gnu.java.net.PlainDatagramSocketImpl.setOption 
    at java.net.DatagramSocket.setBroadcast (DatagramSocket.java:837)
    at testbroadcast.main (testbroadcast.java:18)

With the patch the output is this:

Socket created
First sent
Broadcast flag set
Second sent
Broadcast flag unset
The next one should fail:
It did fail, OK. Here's the exception:
java.net.SocketException: Permission denied
    at gnu.java.net.PlainDatagramSocketImpl.send 
    at java.net.DatagramSocket.send (DatagramSocket.java:624)
    at testbroadcast.SendSomeBroadcast (testbroadcast.java:9)
    at testbroadcast.main (testbroadcast.java:26)
That's all, folks!

I'm looking forward to your comments.
Michal Schmidt
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