Delay sending small data packets via bluetooth

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Hi,

using WinCE6 i want to send datapackets from a client to a server and
back synchronously. Client- and Server applications are running on
different WinCE6 ARMV4I targets that are connected via bluetooth. In
the Client application there are two timestamps, one before the send
and another behind the recv measuring the roundtrip.
If I send small packets it takes a lot of more time than if i send
larger packets.
For that i tryed to disable the Nagle algorithm with TCP_NODELAY but
it has no effect.

SOCKET s = socket (AF_BT, SOCK_STREAM, BTHPROTO_RFCOMM);
....
connect (s, (SOCKADDR *)&sa, sizeof(sa));
....
int nNoDelay = 1;
if(0 != setsockopt(s,IPPROTO_TCP,TCP_NODELAY,(char *)
&nNoDelay,sizeof(nNoDelay)))
wprintf (L"Nagle for Socket not set\n");

If i get the flag again, getsockopt returns 8 as a result for
TCP_NODELAY.

Has someone a similar effect?
Is there another way to disable such a delay?
Why does getsockopt return 8 and not 1?

Thanks
Ebi
.

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