Re: [lwip-users] Problem receiving large packets

[Christiaan Simons]

Feroz wrote:

> My problem is that as long as i send a string shorter than 600 chars
> everything seems to be ok, but when sending larger strings, i dont get
> the "a" char i send after receiving something. So the program waits for
> that on the last sysread on the client side.
> Is there anything i have done wrong?

I guess you should traverse the whole pbuf-chain
(a linked list) to obtain all payload bytes.

Does 600 chars equals the PBUF_POOL_BUFSIZE setting in lwipopts.h?

BTW

I've found some problems with the IP reassembly and fragmentation code.
You might encounter problems with ICMP or UDP payloads larger than
your MTU (1500 bytes for Ethernet).

I'm working on this issue.

As long as you stick with TCP everything should go just fine.
I can read / write a few megs over TCP without problems.

Christiaan Simons

Hardware / Software Engineer
Axon Digital Design

http://www.axon.tv

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