Am 30.10.2009, 18:16 Uhr, schrieb [email protected] <[email protected]>:
Bob Brusa wrote:
Hi
I have written a tiny lwip-based server-ap that sends and receives tcp
packages.
When receiving data - how can I find out if this are normal or urgent
data? (or OOB=out of band data, as MS calls them).
Similarely: How can I send a tcp-package with the urg-flag set?
Thanks and best regards Robert
Unfortunately, lwIP currently does not process the urgent flag. The flag
is present in the TCP header, but as there is no way to access the
header in your recv callback, there's no way to get the TCP flags from
that header.
Tx side is similar: lwIP creates the TCP header itself (cannot be
directly influenced by the application) and there's currently no way to
create a segment with the urgent flag.
Simon
Hi Simon and Kieran
You confirm my "suspicion". I just was not sure, if I missed something.
Thanks for the info and have a nice weekend.
Robert
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