Hi:

I develop a ftp server with lwIP tcp api,, now a problem blocks me a long time .
Normally, I get file from the ftp server by FlashFXP, the speed is up to 
200kB/s.
but the speed becomes lower in following case:

1.       Unplug cable when getting file from the ftp server

2.       the transfer will process continually after plug cable again, then, 
the speed becomes 3KB/s

I trace the problem and find the value of tcp_sndbuf(pcb) is small enough...I 
guess it dues to slipping windows problem

Anyone meet the problem ?

Vincent Cui
Sr. Firmware Engineer
Mobile: +8613255150315
Tel: +86 21 34612525x6104
Fax: +86 21 34619770
E-Mail: [email protected]<mailto:[email protected]>
Shanghai EnLogic Electric Technology Co., Ltd.
Address: 1104-1106, Building A, No.391, Guiping Road, Xuhui District, Shanghai, 
200233


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