Hi,

On Apr 1, 2011, at 9:28 AM, via RT wrote:

> I’ve tested DTLS implementation and know that several fixes has been
> applied for issues related to fragment.

Thanks for testing! There is a known issue with the bitmask, the patch #2457 
addresses that, but has not been applied to the official source yet.

> But, it still has a problem to reassemble fragments. Please, check the
> attached patch.

Patch #2457 corrects the first value in bitmask_end_values[] to 0xff. Your 
patch is basically doing the same, but you also shift the entire array, which 
requires adjusting the index when accessing it by subtracting one. Please have 
a look at http://sctp.fh-muenster.de for the latest DTLS patches. It would be 
great if you could confirm that #2457 fixes the problems you encountered.

Best regards
Robin






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