/// <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> /// 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, byte[] packet) { var header = new PcapHeader(0, 0, (uint)packet.Length, (uint)packet.Length); return(queue.Add(header, packet)); }