message from sctp getsockopt or sctp_opt_info show error

[Michael Tüxen]

On Sep 24, 2011, at 3:43 PM, jyl_2006 wrote:

> Recently , I use getsockopt or sctp_opt_info to get the information of sctp
> association message, both two function return value of 0, and that means
> they work well, but the result of testing show some error.
> 
> Here are the result that getting from function getsockopt or sctp_opt_info:
> 
> NO. ASSOC-ID STATE             RWND     UNACKDATA PENDDATA INSTRMS OUTSTRMS
> FRAG-POINT SPINFO-STATE SPINFO-CWDN SPINFO-SRTT SPINFO-RTO SPINFO-MTU
> 1   36       ESTABLISHED       57344    0         0        10      10      
> 1452       ACTIVE       4380        0           3000       1500
> 
> other datas have same value with the data show above.
> 
> But the message I get from wireshark ,show the value of RWND is changed
> ,when I get a sack.
> 
> So can anyone point out something we did wrong or steps we missed? 
> Thanks in advance. 
Just a followup:

OK, you use the SCTP_STATUS socket option for the first values. I tested
with FreeBSD 9 and get reported the correct values of rwnd. Please provide
more information how to reproduce the problem...

Best regards
Michael
> 
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