private void mBtnStopMonitor_Click(object sender, EventArgs e)
{
if (Status == EnumStatus.Idle)
{
return;
}
if (Status == EnumStatus.Monitor)
{
Device.StopCapture();
trdGetPacketFromQueueAct = false; // Thread for GetPacketFromQueue
trdUpdateListUIAct = false;
Status = EnumStatus.Idle;
this.Text = "Packets Monitor ";
mStatusMonitor.Text = "Status : Idle ";
}
else if (Status == EnumStatus.OpenFile)
{
trdGetPacketFromQueueAct = false; // Thread for GetPacketFromQueue
trdUpdateListUIAct = false;
PcapFileEOF = false;
Status = EnumStatus.Idle;
this.Text = "Packets Monitor ";
mStatusMonitor.Text = "Status : Idle ";
}
PcapFileWriter.CloseAll();
if (AllPcapFileWriter != null)
{
AllPcapFileWriter.Close();
}
}
// Received pakcets will be push into queue. ( This is a callback function.)
private void PushPacketToQueue(object sender, CaptureEventArgs e)
{
Packet packet;
try
{
packet = PacketDotNet.Packet.ParsePacket(e.Packet.LinkLayerType, e.Packet.Data);
if (e.Packet.LinkLayerType != LinkLayers.Ethernet)
{
return;
}
// Write the packet to pcap file .
FileInfo PcapFile_Total = new FileInfo(AllPcapFileWriter.Name);
if (PcapFile_Total.Length < PcapFileMaxSizeOfByte) // 200 MB
{
AllPcapFileWriter.Write(packet.Bytes);
}
else
{
AllPcapFileWriter = new CaptureFileWriterDevice(FileStoragePath.GetPath_TotalPackets() + "\\" + DateTime.Now.ToString("tt hh.mm.ss.pcap"));
AllPcapFileWriter.Write(packet.Bytes);
}
// The Packet is too small , it does not be analyzed .
if (packet.Bytes.Length <= 60)
{
return;
}
lock (PacketQueueLock)
{
// push the packet to the queue .
PacketQueue.Enqueue(e.Packet);
}
}
catch
{
return;
}
}
