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Protocollo DCC (e altra domanda)

 
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Protocollo DCC (e altra domanda)
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smn
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Registrato: 26/07/03 15:06
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Messaggio Protocollo DCC (e altra domanda) Rispondi citando
qualcuno sa come funziona il PROTOCOLLO DCC di IRC ? ho fatto un piccolo client che riceve un file (con i socket) inviato tramite DCC con le funzioni di mIRC .. in pratica con i socket ricevo .. ma ricevo solo i primi byte dopodich? la velocit? diminuisce sempre pi? ... allora ho pensato che il motivo ? che devo avvisare l'altro host che l'invio dei dati ? arrivato e che sono pronto a riceverne altri .. ma come caxxo faccio ? se lo sapete ditemelo tnx Very Happy


Altra domanda.

Qualcuno conosce bene il C ? mi servono degli aiuti (molti) tanks SmileSmile

_________________
Se nn sapete qualcosa posso aiutarvi..se sapete molte cose aiutatemi Very Happy
Mer Nov 10, 2004 3:19 pm Profilo Invia messaggio privato Invia e-mail
Delpho
Utente Esperto


Registrato: 10/11/02 13:38
Messaggi: 213
Residenza: The Wired

Messaggio Rispondi citando
credo che potrai trovare le info che cerchi su
http://www.irchelp.org/irchelp/rfc/dccspec.html

Nel caso non sia cos?, tutto l'rfc sui protocolli irc sta
su http://www.irchelp.org/irchelp/text/rfc1459.txt

_________________
delpho[at]tuttoirc.it
wwy[at]azzurra.org
zoher[at]equilibrium-mud.org
Gio Nov 11, 2004 9:02 am Profilo Invia messaggio privato Invia e-mail HomePage ICQ
smn
Membro Senior


Registrato: 26/07/03 15:06
Messaggi: 63
Residenza: Napoli

Messaggio Rispondi citando
Questo
Citazione:

Initiator:
DCC command issued.
Create a socket, bind it to INADDR_ANY, port 0, and
make it passive (a listening socket).
Send the recipient a DCC request via CTCP supplying
the address and port of the socket. (This
is ideally taken from the address of the local
side of the socket which is connected to a
server. This is presumably the interface on
the host which is closest to the rest of
the net, and results in one less routing hop
in the case of gateway nodes).
Continue normally until a connection is received.

On a connection:
Accept the connection.
Close the original passive socket.
Conduct transaction on the new socket.

Acceptor:
CTCP DCC request received.
Record information on the DCC request and notify the user.

At this point, the USER should be able to abort (close) the
request, or accept it. The request should be accepted with
a command specifying the sender, type, and argument, or
a subset of these where no ambiguity exists.

If accepted, create a TCP socket.
Connect the new socket to the address and port supplied.
Conduct the transaction over the socket.


e poi questo

Citazione:

FILE Data is sent in packets, rather than dumped in a stream manner.
This allows the DCC SEND connection to survive where an FTP
connection might fail. The size of the packets is up to the
client, and may be set by the user. Smaller packets result
in a higher probability of survival over bad links.
The recipient should acknowledge each packet by transmitting
the total number of bytes received as an unsigned, 4 byte
integer in network byte order. The sender should not continue
to transmit until the recipient has acknowledged all data
already transmitted. Additionally, the sender should not
close the connection until the last byte has been
acknowledged by the recipient.

Note that it is not possible for the recipient to tell if the
entire file has been received - only the sender has that
information, although IRCII does not report it. Users generally
verify the transfer by checking file sizes.

Note also that no provision is made for text translation.

The block size used by IRCII is BIG_BUFFER_SIZE (1024).
This should probably be reviewed and reduced.


non sono bravo in inglese .. qualcuno che sa spiegarmi in breve che significa ? cmq grazie Delpho

P.S. che cos'? quel geek code ?

_________________
Se nn sapete qualcosa posso aiutarvi..se sapete molte cose aiutatemi Very Happy
Gio Nov 11, 2004 2:41 pm Profilo Invia messaggio privato Invia e-mail
wingswin
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wingswin
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