Hi,
first of all please update to LWIP 1.32. I can only recommend that.
Second what's your MEM_SIZE, TCP_SND_QUEUELEN, MEMP_NUM_PBUF?
Do you have access to the Debug messages, that could really help.
I think it could be maybe a memory problem.
On Mon, 2 Aug 2010 10:19:06 +0200, Daniel Klingler wrote:
Hi,
I am using LWIP 1.3 with Xilinx (SDK).
My settings:
- TCP_SND_BUF 64240
- TCP_MSS 1460
My problem:
- If I am do tcp_write with 18720 Bytes the transfer is well going.
- If I am writing with 19968 Bytes the transfer with some PCs is well going,
but with other PCs the return of tcp_write is -1.
- If I am writing with 21504 Bytes or more then with all connected PCs I
will return -1 of tcp_write.
Does anybody know this issue or has any idea to solve this?
Thanks for your replies.
Regards,
Daniel
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