Re: [lwip-users] TCP not sending initial ACK

[address@hidden]

Chuck Kuecker wrote:
> I've got TCP_WND and TCP_MSS set to 1200. This seems to give the best
> communications. Setting TCP_WND 2048 and TCP_MSS to 1500 worked for
>   
TCP_MSS > 1460 in conjuction with ethernet is *not* a good idea as it 
will result in IP fragmentation! The MTU on ethernet is 1500, 
substracting IP- and TCP-headers from that results in a TCP_MSS of 1460. 
Normally, TCP_MSS=1460 and TCP_WND=2920 should result in good throughput.

I'll try to have a look at the pcap this week - although I don't have 
that much time at the moment.
> Speed and throughput are secondary to accuracy for this product.
That's of course true, but without bugs, lwIP should achieve accuracy at 
any speed and throughput.

Simon