private sInfoTh ValiderTrame(byte[] binTexte)
{
/*Regarde si la trame recu est un RRQ(0001) ou WRQ(0002)
* Apres decode le nom du fichier demander
*/
//Instancie une structure qui sera remplit et renvoyer selon information de la trame
sInfoTh sinf = new sInfoTh();
if (binTexte[0] == 0 && binTexte[1] == 1)
{
sinf.OpCode = 1;
}
else
{
if (binTexte[0] == 0 && binTexte[1] == 2)
{
sinf.OpCode = 2;
}
else
{
sinf.OpCode = -1;
return(sinf);
}
}
int i = 2;
while (binTexte[i] != 0x00)
{
sinf.Nom += Encoding.ASCII.GetString(binTexte, i, 1);
i++;
}
return(sinf);
}
public cW(sInfoTh info)
{
_bThread = false;
_pd = info.pDistant;
_fichier = info.Nom;
Thread t = new Thread(new ThreadStart(thW));
t.Start();
}
private void th69()
{
byte[] binT = new byte[516];
sInfoTh sInfo = new sInfoTh();
Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
s.ReceiveBufferSize = 50;
EndPoint pLocal = new IPEndPoint(0, 69);
EndPoint pDistant = new IPEndPoint(0, 0);
s.Bind(pLocal);
while (_bThread)
{
if (s.Available > 0)
{
int a = s.ReceiveFrom(binT, ref pDistant);
sInfo = ValiderTrame(binT);
sInfo.pDistant = pDistant;
switch (sInfo.OpCode)
{
case 1:
//RRQ case
new cR(sInfo);
break;
case 2:
//WRQ case
new cW(sInfo);
break;
case -1:
//Erreur case
SendErreur(pDistant);
break;
}
}
}
s.Close();
}