sockets & port 23

[z0mbie]

..
struct sockaddr_in Saddr;
SOCKET Sock=socket(AF_INET,SOCK_STREAM,0);
Saddr.sin_family=AF_INET;
Saddr.sin_port=htons(23);
//dal'she connect i t.d...
recv(Sock,buffer,sizeof(buffer),0);

pri podklyuchenii k portam 25,80 i t.d. poluchayu normal'nыy text a na 23 - "_¤_¤_¤#_¤'_¤$+" ..
v chem delo ? port 23 chem-to otlichaetsya ot drugix ?

[VX]

net nichem ne otlicahetsa, u menja toje taka problema bila s nekotoimi serverra, ocen' mojet bit sto server compressit vse danni kotorie posilaet (naprimer rabotaet mod_gzip).
ili vojmojno cto nujno vkluchit' binary mode ...

[z0mbie]

connectyus' ya k freenetu..
obыchnыm telnet clientom vse OK..
i kak vklyuchit' binary mode ?

[VX]

Rasskaji po podrobnie..(mojesh po email)..
cto ti konkretno posilaesh..da i eshe poproboi WSAsend WSArecv esli ti pod windami...i eshe rfc po telnetu.

[z0mbie]

Originally posted by VX:
Rasskaji po podrobnie..(mojesh po email)..
cto ti konkretno posilaesh..da i eshe poproboi WSAsend WSArecv esli ti pod windami...i eshe rfc po telnetu.

nu dlya nachala xochu xotya bы poluchit' "welcome ... login: " :]

[Tumanyan]

Hi,
I believe, that the problem is, that you didn't implement Telnet protocol.
Let me inform you, that Telnet does not just assume sending and recieveving text messages. It contains much more commands (I mean protocol commands)...
I believe, in your case, the server on the other side configured to send some escape sequences to configure client (For example to configure session parameters such as color).
My suggestion will be to take a look at Telnet RFC (Unfortunatelly, I don't remember the number).

Regards,
Hovhannes

[_Давид]

А по мне, скорее 80 ненормален, чем 23. Было бы логичне было встретить бинарный application layer protocol, чем ascii по стандарту telnet. HTTP, FTP, SNTP... текстовые, и вообще на человека расчитаны, а не на машину...