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Info on UDP checksums

Neil Forrest

Joined: Apr 03, 2005
Posts: 13
Can anyone steer me to easy to follow information on doing checksums and in particular with UDP?
Edwin Dalorzo
Ranch Hand

Joined: Dec 31, 2004
Posts: 961
Well, you can calculate a checksum using two different classes in Java. You can use the java.util.zip.CRC32 or the java.util.zip.Adler32 implementations.

Both of them implement java.util.zip.Checksum.

Now, when it comes to UDP Datgram packets. You can update the Checksum until you have sent or received all the data, and then calculate the checksum.

Somewhat like this:

Good luck, comrade!
[ June 09, 2006: Message edited by: Edwin Dalorzo ]
I agree. Here's the link: http://aspose.com/file-tools
subject: Info on UDP checksums
It's not a secret anymore!