Chronological Thread 

< Chronological >      < Thread >

---

Michael,
The capture is here:

http://download.yousendit.com/BDC67D557E5A65EC

The client is 10.4.2.23 and the server is 10.4.2.65. The
client is starting to send data (164 packets using
sctp_send), than waits 10 seconds, than initiates a graceful
close (e.g. calls sctp_shutdown, than unregisterinstance).

Only 27 packets are initially sent, although sctp_send
succeeds. Only after calling sctp_shutdown you see the rest
of the data capture arrives. It seems the sctp_shutdown is
sending the rest of the packets (and not unregisterinstance
as I previously written, I was wrong. I'm calling the
shutdown & unregister one after the other, but as I've
inspected it when using sctp_abort and not shutdown, the
rest of the packets are not sent, so it seems to be related
to the close).

Here's a code snippet:

Server
for (;;)
{
isdatarrived() (if so copy it and return)
sctp_extendedEventLoop(sa_mainm->mainlock,sa_mainm->mainunlock
,NULL);
}

Client

int sctpsendmsg(const char *buf , int len)
{
r = SCTP_send(association,
0,
(unsigned char *)buf,
len,
SCTP_GENERIC_PAYLOAD_PROTOCOL_ID,
SCTP_USE_PRIMARY,
SCTP_NO_CONTEXT,
0xFFFFFFFF, // infinite
SCTP_UNORDERED_DELIVERY,
SCTP_BUNDLING_DISABLED);

// return values
if (r==SCTP_SUCCESS)
{
return len;
}
else
{
return SOCKETERROR;
}
}




thanks,
Elie


>Hi Elie,
>
>can you provide a Wireshark trace in .pcap format and
>possibly the source of your programs?
>
>Best regards
>Michael
>
>On Feb 27, 2008, at 12:28 PM, elie wrote:
>> Hi,
>> I'm new to SCTP lib, using it on windows XP. I've written
>> a small server & client programs where the client sends
>> packets to the server.
>>
>> There's a problem when the client sends sum of packets
>> (200~, each 100~ bytes), using sctp_send. I see the first
>> 30~ being sent, than there's a delay on the sender side -
>> although the sctp_send function returns without an error,
>> the packets are not sent. Only when I call
>> unregisterInstance on the sender side the rest of the
>> packets are being sent.
>>
>> Can someone please help me understanding this issue?
>> thanks-
>> Elie
>>
>>
>> _______________________________________________
>> sctp-discussion mailing list
>> sctp-discussion AT sctp.de
>> http://www.sctp.de/mailman/listinfo/sctp-discussion
>>
>

---

• [SCTP-Discussion] sctp_send delay on windows, elie, 02/27/2008
  • Re: [SCTP-Discussion] sctp_send delay on windows, Michael Tuexen, 02/27/2008
  • <Possible follow-up(s)>
  • Re: [SCTP-Discussion] sctp_send delay on windows, elie, 02/28/2008
    • Re: [SCTP-Discussion] sctp_send delay on windows, Michael Tuexen, 02/28/2008
  • Re: [SCTP-Discussion] sctp_send delay on windows, elie, 02/28/2008

---

Archive powered by MHonArc 2.6.19+.