vincent cui <[email protected]> wrote: > I ported ftpd in my lwIP project.. . and found there is received problem > > > > Type “get a.bin” in ftp client console, my server works pretty and get 33KB/s > uploading > > Type “put a.bin” in ftp client console, my server works , but very slow, I > trace the code, and found that sequence TCB payload size is 970, 490, 970, > 490, 970, 490 …. > > > > The key point is that the payload size is small …it seems to be related with > lwIP configuration. > Which side is lwIP, the server, client or both? If it's the server only, try increasing TCP_WND. Also, did you check wireshark and see the same segment sizes? If not, there might be other limitations that drop packets after receiving them.
Simon
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