Winsock with telnet

LeVuHoang · Post by **LeVuHoang** » Tue Jan 11, 2005 1:39 am

I used AppSnif or another debugger, API Spy but not found what telnet use.
I tried to use telnet connect to a SMTP server. Incomming Data is get correctly, but outcomming data is empty.
What the hell it is ???
Thanks all

Post by **madshi** » Tue Jan 11, 2005 8:17 am

Does this one catch outgoing data?

http://www.blad3.ro/

LeVuHoang · Post by **LeVuHoang** » Tue Jan 11, 2005 12:25 pm

no, It can't

. Incomming data is catched well. But outgoing data is empty.
Even Spy API, Auto Debug... All of them get the same result

but Norton Anti Virus can

Post by **madshi** » Tue Jan 11, 2005 12:32 pm

Well, I don't know how it works.

LeVuHoang · Post by **LeVuHoang** » Tue Jan 11, 2005 1:47 pm

Anybody has an idea ???

dcsoft · Post by **dcsoft** » Tue Jan 11, 2005 8:40 pm

LeVuHoang wrote:Anybody has an idea ???

Perhaps TracePlus/Winsock will tell you what you need to know.

-- David

LeVuHoang · Post by **LeVuHoang** » Wed Jan 12, 2005 6:02 pm

I've tried. But the demo version doesn't show me if the data is empty or not.
Do you have full version ???

dcsoft · Post by **dcsoft** » Wed Jan 12, 2005 11:31 pm

LeVuHoang wrote:I've tried. But the demo version doesn't show me if the data is empty or not.
Do you have full version ???

Yes, but I don't know how to use it to test the telnet.

Have you tried a packet-level sniffer like Ethereal? That intercepts network traffic at a lower-level than intercepting Winsock calls.

-- David

LeVuHoang · Post by **LeVuHoang** » Thu Jan 13, 2005 3:55 am

oh my god. I have just tried. Ethereal is the same

... Message incomming is ok but outcomming can't see

(

LeVuHoang · Post by **LeVuHoang** » Sun Jan 16, 2005 11:10 am

hallo All,
I'd found why is it

Because when you TYPED a character, telnet SENDS it immediately without buffering it in the string

).
OK, thank you all very much