/// <summary>
/// Add a packet to this send queue.
/// </summary>
/// <param name="packet">The packet to add</param>
/// <returns>True if success, else false</returns>
public static bool Add(this SendQueue queue, RawCapture packet)
{
var data = packet.Data;
var timeval = packet.Timeval;
var header = new PcapHeader((uint)timeval.Seconds, (uint)timeval.MicroSeconds,
(uint)data.Length, (uint)data.Length);
return(queue.Add(header, data));
}
/// <summary>
/// Add a packet to this send queue.
/// </summary>
/// <param name="packet">The packet bytes to add</param>
/// <returns>True if success, else false</returns>
public static bool Add(this SendQueue queue, byte[] packet)
{
var header = new PcapHeader
{
PacketLength = (uint)packet.Length,
CaptureLength = (uint)packet.Length
};
return(queue.Add(header, packet));
}
/// <summary>
/// Basic capture example
/// </summary>
public static void Main(string[] args)
{
// Print SharpPcap version
var ver = Pcap.SharpPcapVersion;
Console.WriteLine("SharpPcap {0}, Example10.SendQueues.cs\n", ver);
Console.Write("-- Please enter an input capture file name: ");
string capFile = Console.ReadLine();
ICaptureDevice device;
try
{
// Get an offline file pcap device
device = new CaptureFileReaderDevice(capFile);
// Open the device for capturing
device.Open();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
return;
}
Console.Write("Queueing packets...");
//Allocate a new send queue
var squeue = new SharpPcap.LibPcap.SendQueue
((int)((CaptureFileReaderDevice)device).FileSize);
RawCapture packet;
try
{
//Go through all packets in the file and add to the queue
while ((packet = device.GetNextPacket()) != null)
{
if (!squeue.Add(packet))
{
Console.WriteLine("Warning: packet buffer too small, " +
"not all the packets will be sent.");
break;
}
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
return;
}
Console.WriteLine("OK");
Console.WriteLine();
Console.WriteLine("The following devices are available on this machine:");
Console.WriteLine("----------------------------------------------------");
Console.WriteLine();
int i = 0;
var devices = LibPcapLiveDeviceList.Instance;
/* Scan the list printing every entry */
foreach (var dev in devices)
{
/* Description */
Console.WriteLine("{0}) {1} {2}", i, dev.Name, dev.Description);
i++;
}
Console.WriteLine();
Console.Write("-- Please choose a device to transmit on: ");
i = int.Parse(Console.ReadLine());
devices[i].Open();
string resp;
if (devices[i].LinkType != device.LinkType)
{
Console.Write("Warning: the datalink of the capture" +
" differs from the one of the selected interface, continue? [YES|no]");
resp = Console.ReadLine().ToLower();
if ((resp != "") && (!resp.StartsWith("y")))
{
Console.WriteLine("Cancelled by user!");
devices[i].Close();
return;
}
}
// close the offline device
device.Close();
// find the network device for sending the packets we read
device = devices[i];
Console.Write("This will transmit all queued packets through" +
" this device, continue? [YES|no]");
resp = Console.ReadLine().ToLower();
if ((resp != "") && (!resp.StartsWith("y")))
{
Console.WriteLine("Cancelled by user!");
return;
}
try
{
var liveDevice = device as LibPcapLiveDevice;
Console.Write("Sending packets...");
int sent = squeue.Transmit(liveDevice, SendQueueTransmitModes.Synchronized);
Console.WriteLine("Done!");
if (sent < squeue.CurrentLength)
{
Console.WriteLine("An error occurred sending the packets: {0}. " +
"Only {1} bytes were sent\n", device.LastError, sent);
}
}
catch (Exception e)
{
Console.WriteLine("Error: " + e.Message);
}
//Free the queue
squeue.Dispose();
Console.WriteLine("-- Queue is disposed.");
//Close the pcap device
device.Close();
Console.WriteLine("-- Device closed.");
Console.Write("Hit 'Enter' to exit...");
Console.ReadLine();
}
/// <summary>
/// Add a packet to this send queue.
/// </summary>
/// <param name="packet">The packet bytes to add</param>
/// <returns>True if success, else false</returns>
public static bool Add(this SendQueue queue, Packet packet)
{
return(queue.Add(packet.Bytes));
}
/// <summary>
/// Add a packet to this send queue.
/// </summary>
/// <param name="packet">The packet bytes to add</param>
/// <returns>True if success, else false</returns>
public static bool Add(this SendQueue queue, byte[] packet)
{
var header = new PcapHeader(0, 0, (uint)packet.Length, (uint)packet.Length);
return(queue.Add(header, packet));
}