Hi Kieran,
based on your answers is it right, that each byte in the data stream
occurs only once?
Even if a blocking state (equals Receive Not Ready at one side off wire)
and after then a retransmission occurs then the IP stack gives me (in
lwIP the callback function registered with tcp_recv()) ea
On 30 Mar 2011, at 15:59, Thomas Richter (TCD - DE/Dresden) wrote:
> Ok the data stream is correctly ordered. But how my application can the
> information that the frames have the same sequence number?
It won't need to. lwIP will give it each byte exactly once, even if there are
duplicates on
Hi Kieran,
thanks for your answer.
Ok the data stream is correctly ordered. But how my application can the
information that the frames have the same sequence number?
Is there any possibility to get this information in lwIP?
Or have I analyze all my data to prevent double data?
Best regards
Thoma
On 30 Mar 2011, at 15:39, Thomas Richter (TCD - DE/Dresden) wrote:
> Give lwIP both frames
Yes, just give lwIP all the frames your driver receives off the wire. Your
driver should have no need to parse the frames at all. lwIP will convert the
stream of packets, with gaps, overlaps, out of or
Hi,
in my tests the following problem occurs:
A packet with the same sequence number was sent to lwIP. Wireshark TCP
analysis says it was a TCP Retransmission with same sequence number and
same data (plus a little bit more data append to the earlier transmitted
data).
My question:
What will be ha
I think, from memory, an lwIP build is about 40K bytes - but that is a
rough estimate and the usual caveats apply (compiler, optimisation,
configuration, etc.).
However, if RAM is your limiting factor, then lwIP uses a lot more RAM
than uIP, as uIP has only a single buffer, with no queuing. lwIP
Currently I run uIp on an ARM11. I'm thinking about moving on to the
latest LWIP but a bit worried about the code size (my RAM is a somewhat
limited and the whole code should run under FreeRtos)
Does anyone know (roughly) how much the LWIP code size is bigger than
Uip code size?
Thanks & Be
On 30 Mar 2011, at 08:02, Thomas Richter (TCD - DE/Dresden) wrote:
>
> For this I would using the parameter "window" in TCP header and set them
> to 0 with lwIP. But what can I do to generate this?
There's no API to do this directly, and you still might not get what you want.
Although you woul
Hi all,
I have ported the LwIP into my system ucosII + s3c2440 + DM9000,I do not finish
the driver of NIC .Now, how do I test my lwIP and how to use loopif to test the
protocol when the hardware driver is not ready?
Best Regards,
Li Zhong,
___
lwip-us
Hi,
I´m searching for a possibility to manipulate the "flow control" of TCP
data handling.
I know that there is the parameter "Window" in the TCP header (see
http://en.wikipedia.org/wiki/Transmission_Control_Protocol#TCP_segment_structure).
My task is to transport TCP data over Ethernet interface
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