[Ns-developers] Ns-3 RC Daily Bug Status for Saturday June 21, 2008

[Mathieu Lacage]

On Sat, 2008-06-21 at 20:47 -0700, craigdo at ee.washington.edu wrote:

> The "Evensky test program," tcp-2way.cc, is turning out to be one of
> those
> gifts that keeps on giving.  It has uncovered at least four separate
> problems in the ns-3 code with perhaps two remaining problems pending:
> a
> lost socket address tag on a one-byte packet, and a relatively bizarre

If you see a lost tag on a one-byte packet, it might have been caused by
my previous fixes to the tag list: I was somewhat worried about such a
potential problem but I was not able to come up with a testcase which
exhibited the problem. Can you point me to a testcase ?

> looking TCP header that Mathieu observed today.
> 
> tcp-2way:HandleRead(Server(old)|, 0x8075128)
> ns3::SocketAddressTag [0-500] address=02-06-0a:01:00:01:01:c0Packet
> Dump: ns3::TcpHeader (17476 > 17476 [ RST ] Seq=1145324612
> Ack=1145324612 Win=17476) Payload Fragment [46:546]
> 
> Mathieu is looking into the remaining problems.  Raj, have you seen anything
> like the TCP header in question?  It looks like a bunch of hexadecimal 4.

That bug was a metadata problem and fixing it avoided the following
crasher (I somewhat expected that) because the crasher was caused by
believing the metadata while it was wrong.

Mathieu