Re: [lwip-users] netconn_write throughput stuck at 1024 bytes

[address@hidden]

Forgot one:

DownyTif wrote:
> Is TCP_WND only for receiving data? If I only receive small frames in my
> lwip, do I have to still make it big?
>   

TCP_WND is the receive window announced to the other side with a SYN, 
but it is also used as a maximum limitation on a transmit window 
received from the other side. This is to limit memory allocation in the 
lwIP application. So you still have to set it high when only receiving a 
little data but sending much.

Simon