[Guy Harris <guy@xxxxxxxxxxxx>]

On Feb 23, 2009, at 12:59 AM, יוני תובל wrote:

> i tried to return the entire message length . still fails .
> (it only succeeds when the tvb consists of the entire message )
> What about he offest value we pass to the get_len method .

It's the offset into the tvbuff handed to the get_len routine of the  
first byte of the packet whose length should be returned.

Presumably the PDUs consist of a 2-byte length field (in network byte  
order?) followed by that number of bytes of data, and, in the get_len  
routine, you fetch the length value from the packet, add 2 to it, and  
return that value.