/// <summary>
/// Sends all packets in a 'PcapSendQueue' out this pcap device
/// </summary>
/// <param name="q">
/// A <see cref="SendQueue"/>
/// </param>
/// <param name="transmitMode">
/// A <see cref="SendQueueTransmitModes"/>
/// </param>
/// <returns>
/// A <see cref="System.Int32"/>
/// </returns>
public int SendQueue(WinPcap.SendQueue q, SendQueueTransmitModes transmitMode)
{
return(q.Transmit(this, transmitMode));
}
/// <summary>
/// Basic capture example
/// </summary>
public static void Main(string[] args)
{
// Print SharpPcap version
string ver = SharpPcap.Version.VersionString;
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 OfflineCaptureDevice(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 WinPcap.SendQueue
( (int)((OfflineCaptureDevice)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 = LibPcap.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 winPcapDevice = device as WinPcap.WinPcapDevice;
Console.Write("Sending packets...");
int sent = winPcapDevice.SendQueue(squeue, WinPcap.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();
}
