private void Send_CSMA_CD(string TypeDataSend, string IPSource, string IPDest)
{
ProcessSending ps = ProcessSends.Find(p => p.IPSource == IPSource && p.IPDest == IPDest && p.Status == "Sending");
Computer Com_Send = ListComputers.Find(c => c.MAC == IPSource);
Computer Com_Receive = ListComputers.Find(c => c.MAC == IPDest);
Com_Receive.RemoveData();
PaintLine(Pens.Red, Com_Send.GetPoint, Com_Send.GetButton);
PaintLine(Pens.Red, Com_Receive.GetPoint, Com_Receive.GetButton);
PaintLine(Pens.Red, Com_Send.GetPoint, Com_Receive.GetPoint);
Com_Send.GetButton.BackColor = Color.Red;
Com_Receive.GetButton.BackColor = Color.Red;
DataChannel = ps.Data;
int length = CountPacket(DataChannel);
int size = ConstantFrame.SizePacket;
Soluong = length;
bool CheckCollision = false;
// Create frames -> send
for (int i = 0; i < length; i++)
{
if (i == length - 1)
{
List <byte> dataEnd = new List <byte>();
dataEnd.AddRange(DataChannel.GetRange(i * size, DataChannel.Count - i * size));
dataEnd.AddRange(Encoding.UTF8.GetBytes(ConstantFrame.EndData));
Send_CSMA_CD(DataSend(dataEnd, TypeDataSend, IPSource, IPDest), Com_Receive);
}
else
{
Send_CSMA_CD(DataSend(DataChannel.GetRange(i * size, size), TypeDataSend, IPSource, IPDest), Com_Receive);
}
if (Collision_CSMA_CD)
{
CheckCollision = true;
break;
}
}
if (!CheckCollision)
{
ProcessSends.Find(p => p.IPSource == IPSource && p.IPDest == IPDest).Status = "Complete";
//UpdateDataGridView(dgvView);
// Remove DataChannel
PaintLine(Pens.Black, Com_Send.GetPoint, Com_Send.GetButton);
PaintLine(Pens.Black, Com_Receive.GetPoint, Com_Receive.GetButton);
PaintLine(Pens.Black, Com_Send.GetPoint, Com_Receive.GetPoint);
Com_Send.GetButton.BackColor = Control.DefaultBackColor;
Com_Receive.GetButton.BackColor = Control.DefaultBackColor;
DataChannel.RemoveRange(0, DataChannel.Count);
TestChannel = true;
// Show
ConverDataReceive(Com_Receive);
}
else
{
PaintLine(Pens.Yellow, Com_Send.GetPoint, Com_Send.GetButton);
PaintLine(Pens.Black, Com_Receive.GetPoint, Com_Receive.GetButton);
PaintLine(Pens.Black, Com_Send.GetPoint, Com_Receive.GetPoint);
Com_Send.GetButton.BackColor = Color.Yellow;
Com_Receive.GetButton.BackColor = Control.DefaultBackColor;
ProcessSends.Find(p => p.IPSource == IPSource && p.IPDest == IPDest && p.Status == "Sending").Status = "Waitting";
TestChannel = true;
if (Congestion_CSMA_CD == "Continue")
{
Congestion_CSMA_CD = IPSource;
k_CD = Math.Pow(2, k_CD);
Thread.Sleep((int)k_CD * 10 /*ConstantFrame.MiniSlot*/);
CSMA_CD(TypeDataSend, IPSource, IPDest);
}
else // lbCongestion.Text != IPSource
{
CSMA_CD(TypeDataSend, IPSource, IPDest);
}
}
}
private void btnSend_Click(object sender, EventArgs e)
{
ProcessSending process = new ProcessSending(cbComputerSend.Text, cbComputerReceive.Text, btnTypeData.Text);
if (btnTypeData.Text == "MM")
{
process.Data.AddRange(Encoding.UTF8.GetBytes(txbData.Text));
}
else //"FF"
{
process.Data.AddRange(Encoding.UTF8.GetBytes(txbData.Text));
process.Data.AddRange(FileBuffer.DataFile);
}
ProcessSends.Add(process);
Computer comSend = ListComputers.Find(c => c.MAC == process.IPSource);
comSend.GetButton.BackColor = Color.Yellow;
PaintLine(Pens.Yellow, comSend.GetPoint, comSend.GetButton);
switch (cbTypeCSMA.Text)
{
case "1 Persistent":
Thread Thread_1Persistent = new Thread(CSMA_1Persistent);
Thread_1Persistent.Priority = ThreadPriority.Lowest;
Thread_1Persistent.IsBackground = true;
Thread_1Persistent.Start();
//CSMA_1Persistent();
break;
case "P Persistent":
Thread Thread_pPersistent = new Thread(CSMA_pPersistent);
Thread_pPersistent.IsBackground = true;
Thread_pPersistent.Start();
//CSMA_pPersistent();
break;
case "None Persistent":
Thread Thread_NonePersistent = new Thread(CSMA_NonePersistent);
Thread_NonePersistent.IsBackground = true;
Thread_NonePersistent.Start();
break;
case "CSMA/CD":
Thread Thread_CSMACD = new Thread(CSMA_CD);
Thread_CSMACD.IsBackground = true;
Thread_CSMACD.Start();
//CSMA_CD();
break;
case "CSMA/CA": break;
default:
break;
}
btnViewProcess_Click(this, new EventArgs());
}
// Send frame
private void Send(string TypeDataSend, string IPSource, string IPDest)
{
ProcessSending ps = ProcessSends.Find(p => p.IPSource == IPSource && p.IPDest == IPDest && p.Status == "Sending");
Computer Com_Send = ListComputers.Find(c => c.MAC == IPSource);
Computer Com_Receive = ListComputers.Find(c => c.MAC == IPDest);
Com_Receive.RemoveData();
PaintLine(Pens.Red, Com_Send.GetPoint, Com_Send.GetButton);
PaintLine(Pens.Red, Com_Receive.GetPoint, Com_Receive.GetButton);
PaintLine(Pens.Red, Com_Send.GetPoint, Com_Receive.GetPoint);
Com_Send.GetButton.BackColor = Color.Red;
Com_Receive.GetButton.BackColor = Color.Red;
//if (TypeDataSend == "MM")
//{
// Com_Send.Data = Encoding.UTF8.GetBytes(txbData.Text).ToList();
//}
//if(TypeDataSend == "FF")
//{
//}
DataChannel = ps.Data;
int length = CountPacket(DataChannel);
int size = ConstantFrame.SizePacket;
Soluong = length;
// Create frames -> send
for (int i = 0; i < length; i++)
{
if (i == length - 1)
{
List <byte> dataEnd = new List <byte>();
dataEnd.AddRange(DataChannel.GetRange(i * size, DataChannel.Count - i * size));
dataEnd.AddRange(Encoding.UTF8.GetBytes(ConstantFrame.EndData));
Send(DataSend(dataEnd, TypeDataSend, IPSource, IPDest), Com_Receive);
}
else
{
Send(DataSend(DataChannel.GetRange(i * size, size), TypeDataSend, IPSource, IPDest), Com_Receive);
}
}
ProcessSends.Find(p => p.IPSource == IPSource && p.IPDest == IPDest).Status = "Complete";
//UpdateDataGridView(dgvView);
// Remove DataChannel
PaintLine(Pens.Black, Com_Send.GetPoint, Com_Send.GetButton);
PaintLine(Pens.Black, Com_Receive.GetPoint, Com_Receive.GetButton);
PaintLine(Pens.Black, Com_Send.GetPoint, Com_Receive.GetPoint);
Com_Send.GetButton.BackColor = Control.DefaultBackColor;
Com_Receive.GetButton.BackColor = Control.DefaultBackColor;
DataChannel.RemoveRange(0, DataChannel.Count);
TestChannel = true;
// Show
ConverDataReceive(Com_Receive);
}