lwip中应用程序ftpd.c的问题

发布于 2010-01-18 15:22:39 浏览：5984 订阅该版

我今天把ftpd.c程序移植到开发板运行后，出现了一下问题：其一，速度很慢，只有0.1kb/s,其二，上传1k字节的txt文件可以成功，但上传4k字节的文件时就出现超时错误不能成功，其三，不能打开SD卡里面的目录列表，在LeechFTP客户端上运行的结果如下：
> SYST
< 215 RT-Thread RTOS
> PWD
< 257 "/" is current directory.
~ 登录成功.
> CWD /
< 250 Changed to directory "/"
> PWD
< 257 "/" is current directory.
> PORT 192,168,1,243,12,6
< 200 Port Command Successful.
> TYPE A
< 200 Type set to ascii.
> LIST
< 150 Opening Binary mode connection for file list.
< LISTERROR: -rw-r--r-- 1 admin admin 6 Jan 1 2000 1.TXT
< LISTERROR: -rw-r--r-- 1 admin admin 6 Jan 1 2000  [WWW.TXT](http://WWW.TXT) 
< LISTERROR: -rw-r--r-- 1 admin admin 6 Jan 1 2000 1.TXT
< 226 Transfert Complete.
> NOOP
< 502 Not Implemented.
> NOOP
< 502 Not Implemented.
> NOOP
< 502 Not Implemented.
> NOOP
< 502 Not Implemented.
> NOOP
< 502 Not Implemented.
! 在 192.168.1.30 (/2.txt). (操作超时或放弃) 的上传失败

在超级终端上的运行结果如下：
finsh>>Got connection from 192.168.1.243
192.168.1.243 requested: "USER rtt"
192.168.1.243 sent login "rtt"
192.168.1.243 requested: "PASS demo"
192.168.1.243 sent password "demo"
192.168.1.243 requested: "REST 1"
192.168.1.243 requested: "REST 0"
192.168.1.243 requested: "SYST"
192.168.1.243 requested: "PWD"
192.168.1.243 requested: "CWD /"
Changed to directory /192.168.1.243 requested: "PWD"
192.168.1.243 requested: "PORT 192,168,1,243,19,140"
Connected to Data(PORT) 192.168.1.243 @ 5004
192.168.1.243 requested: "TYPE A"
192.168.1.243 requested: "LIST"
192.168.1.243 requested: "NOOP"
192.168.1.243 requested: "NOOP"
Got connection from 192.168.1.243
192.168.1.243 requested: "USER rtt"
192.168.1.243 sent login "rtt"
192.168.1.243 requested: "PASS demo"
192.168.1.243 sent password "demo"
192.168.1.243 requested: "REST 1"
192.168.1.243 requested: "REST 0"
192.168.1.243 requested: "SYST"
192.168.1.243 requested: "PWD"
192.168.1.243 requested: "TYPE A"
192.168.1.243 requested: "PORT 192,168,1,243,19,137"
Connected to Data(PORT) 192.168.1.243 @ 5001
192.168.1.243 requested: "STOR /2.txt"
Waiting 3 seconds for data...
192.168.1.243 requested: "NOOP"
192.168.1.243 requested: "NOOP"
192.168.1.243 requested: "NOOP"
Client 192.168.1.243 disconnected
Got connection from 192.168.1.243
Got connection from 192.168.1.243
192.168.1.243 requested: "USER rtt"
192.168.1.243 sent login "rtt"
192.168.1.243 requested: "USER rtt"
192.168.1.243 sent login "rtt"
192.168.1.243 requested: "PASS demo"
192.168.1.243 sent password "demo"
192.168.1.243 requested: "PASS demo"
192.168.1.243 sent password "demo"
192.168.1.243 requested: "REST 1"
192.168.1.243 requested: "REST 1"
192.168.1.243 requested: "REST 0"
192.168.1.243 requested: "REST 0"
192.168.1.243 requested: "SYST"
192.168.1.243 requested: "SYST"
192.168.1.243 requested: "PWD"
192.168.1.243 requested: "PWD"
192.168.1.243 requested: "TYPE A"
192.168.1.243 requested: "PORT 192,168,1,243,19,138"
Connected to Data(PORT) 192.168.1.243 @ 5002
192.168.1.243 requested: "STOR /2.txt"
Waiting 3 seconds for data...
Client 192.168.1.243 disconnected
请问以上问题的原因是什么呢？谢谢