/// <summary>
/// Removes a packet capture handler.
/// </summary>
/// <param name="handler">The handler.</param>
internal void RemoveHandler(PacketCaptureHandler handler)
{
this.handlers.Remove(handler);
}
///// <summary>
///// Requests a receiving buffer. The method blocks until a buffer is available or until the cancellation is requested.
///// </summary>
///// <param name="cancel">The cancellation token.</param>
///// <returns>The buffer index.</returns>
//private int RequestBuffer(CancellationToken cancel)
//{
// // The buffer index.
// int bufferIndex = -1;
// do
// {
// // Wait for a buffer to become available.
// this.bufferWait.WaitOne();
// lock (this.syncBuffer)
// {
// // If the buffer queue is not empty.
// if (this.bufferQueue.Count > 0)
// {
// // Get the first buffer index.
// bufferIndex = this.bufferQueue.Dequeue();
// // If the queue is empty, reset the buffer wait handle.
// if (this.bufferQueue.Count == 0) this.bufferWait.Reset();
// }
// }
// }
// while ((bufferIndex == -1) && (!cancel.IsCancellationRequested));
// // Return the buffer index.
// return bufferIndex;
//}
///// <summary>
///// Releases the specified buffer.
///// </summary>
///// <param name="bufferIndex">The buffer index.</param>
//private void ReleaseBuffer(int bufferIndex)
//{
// // Release the buffer.
// lock (this.syncBuffer)
// {
// // If the buffer queue is empty, set the buffer wait handle.
// if (this.bufferQueue.Count == 0) this.bufferWait.Set();
// // Add the buffer index to the queue.
// this.bufferQueue.Enqueue(bufferIndex);
// }
//}
///// <summary>
///// Receives a packet from the specified socket.
///// </summary>
///// <param name="socket">The socket.</param>
///// <param name="cancel">The cancellation token.</param>
///// <param name="result">The result.</param>
//private void ReceivePacket(Socket socket, CancellationToken cancel, MultipathTracerouteResult result)
//{
// // The remote end-point.
// EndPoint endPoint = new IPEndPoint(IPAddress.Any, 0);
// // Request a buffer.
// int bufferIndex = this.RequestBuffer(cancel);
// // If the operation was canceled, return.
// if (cancel.IsCancellationRequested) return;
// // Synchronization object.
// object localSync = new object();
// // Buffer flag.
// bool bufferFlag = true;
// try
// {
// // Begin receiving a packet.
// socket.BeginReceiveFrom(this.bufferRecv[bufferIndex], 0, this.bufferRecv[bufferIndex].Length, SocketFlags.None, ref endPoint, (IAsyncResult asyncResult) =>
// {
// lock (localSync)
// {
// try
// {
// // End receiving a packet.
// int length = socket.EndReceiveFrom(asyncResult, ref endPoint);
// // Process the packet.
// this.ProcessPacket(this.bufferRecv[bufferIndex], length, result);
// }
// catch (ObjectDisposedException) { }
// catch (Exception exception)
// {
// // Ignore all errors for received packets.
// result.Callback(MultipathTracerouteState.StateType.PacketError, exception);
// }
// finally
// {
// // If the buffer flag is set.
// if (bufferFlag)
// {
// // Release the buffer.
// this.ReleaseBuffer(bufferIndex);
// // Begin receiving the next packet.
// this.ReceivePacket(socket, cancel, result);
// // Set the flag to false.
// bufferFlag = false;
// }
// }
// }
// }, null);
// }
// catch (ObjectDisposedException) { }
// catch (Exception)
// {
// lock (localSync)
// {
// // If the buffer flag is set.
// if (bufferFlag)
// {
// // Release the buffer.
// this.ReleaseBuffer(bufferIndex);
// // Begin receiving the next packet.
// this.ReceivePacket(socket, cancel, result);
// // Set the flag to false.
// bufferFlag = false;
// }
// }
// }
//}
public void PacketReceiveSuccess(PacketCaptureHandler handler, byte[] buffer, int length, ProtoPacketIp ip)
{
MultipathTracerouteCaptureHandler tracerouteHandler = handler as MultipathTracerouteCaptureHandler;
// Call the callback methods.
tracerouteHandler.Result.Callback(MultipathTracerouteState.StateType.PacketCapture, ip);
// Process the packet for the current protocol.
lock (this.syncProcess)
{
if (null != this.processPacket) this.processPacket(ip, length, tracerouteHandler.Result);
}
}
/// <summary>
/// Adds a packet capture handler.
/// </summary>
/// <param name="handler">The handler.</param>
internal void AddHandler(PacketCaptureHandler handler)
{
this.handlers.Add(handler);
}
public void PacketReceiveError(PacketCaptureHandler handler, byte[] buffer, Exception exception)
{
MultipathTracerouteCaptureHandler tracerouteHandler = handler as MultipathTracerouteCaptureHandler;
// Ignore all errors for received packets.
tracerouteHandler.Result.Callback(MultipathTracerouteState.StateType.PacketError, exception);
}
