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工作学习 / IT技术讨论 / Dennis2! Do you have any ideas on this bug?We have a board supporting TCP/IP suite. ftp server couldn't be connected twice and hung ftp client. But telnet server works well. Additionally there are two channel in this board. Only channel II has this problem. Now I have mixed information because I trace code and TCP task received second connect passive message but valid field in TCP struct is NULL and result in connect. That's an old board, RTOS no support now,and no efficient debug method. so process is very slow.
-guest:guest;
2001-6-5
{477}
(#90976@0)
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Sorry to disappoint you but I am not familiar with network programming (although that's on my to-learn list). Please, I'm no expert and don't treat me like one.My suggestion:
Search/ask in the appropriate newsgroup(s) (http://groups.google.com, google is amazing!).
Sorry again.
-dennis2(dennis2);
2001-6-6
{124}
(#91519@0)
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Thanks lot! The Network analyzer is helpful for me to analyze the problem of too much retransmission in our board or not? I want to
try set small TCP segmant.
-guest:guest;
2001-6-6
(#91539@0)
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Oh definitely...unless you sniff the wire, you don't really know what's going on there. Sorry I forgot to suggest you that (it was on my mind).
-dennis2(dennis2);
2001-6-6
(#91582@0)
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try the tools "sniffer"I do not get what you are dealing with actually ( inplementing the software or setuping the software)
However, using the software tools sniffer to catch the IP packet on the network and refering to the protocal after that maybe solve the problem.
You can download the "sniffer" from the Internet or I can E_mail you it if you need.
-eagle_no1(eagle_No1);
2001-6-7
{345}
(#92747@0)
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Thanks lot! nice to meet network expertI support a board with ethernet based TCP/IP suite. I have all source code. Although I read V1,V2,V3 of comer's and RFCs and had socket API experience before, I had few hands-on experience on Networking,troubleshooting and implementation of Layer 2,3,4.
-guest:guest;
2001-6-7
{255}
(#92842@0)
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Re:
-dennis2(dennis2);
2001-6-7
{521}
(#92871@0)