public void SetSmallKernelMinimumBytesToCopyTest()
{
const string SourceMac = "11:22:33:44:55:66";
const string DestinationMac = "77:88:99:AA:BB:CC";
using (PacketCommunicator communicator = OpenLiveDevice())
{
communicator.SetFilter("ether src " + SourceMac + " and ether dst " + DestinationMac);
communicator.SetKernelMinimumBytesToCopy(1);
Packet expectedPacket = _random.NextEthernetPacket(100, SourceMac, DestinationMac);
for (int i = 0; i != 100; ++i)
{
communicator.SendPacket(expectedPacket);
Packet packet;
DateTime start = DateTime.Now;
PacketCommunicatorReceiveResult result = communicator.ReceivePacket(out packet);
DateTime end = DateTime.Now;
Assert.AreEqual(PacketCommunicatorReceiveResult.Ok, result);
Assert.AreEqual(expectedPacket, packet);
MoreAssert.IsSmallerOrEqual(TimeSpan.FromSeconds(0.07), end - start);
}
}
}
public static PacketCommunicator OpenLiveDevice()
{
NetworkInterface networkInterface =
NetworkInterface.GetAllNetworkInterfaces().FirstOrDefault(
ni => !ni.IsReceiveOnly && ni.NetworkInterfaceType == NetworkInterfaceType.Ethernet && ni.OperationalStatus == OperationalStatus.Up);
LivePacketDevice device = networkInterface.GetLivePacketDevice();
MoreAssert.IsMatch(@"Network adapter '.*' on local host", device.Description);
Assert.AreEqual(DeviceAttributes.None, device.Attributes);
Assert.AreNotEqual(MacAddress.Zero, device.GetMacAddress());
Assert.AreNotEqual(string.Empty, device.GetPnpDeviceId());
MoreAssert.IsBiggerOrEqual(1, device.Addresses.Count);
foreach (DeviceAddress address in device.Addresses)
{
if (address.Address.Family == SocketAddressFamily.Internet)
{
MoreAssert.IsMatch("Address: " + SocketAddressFamily.Internet + @" [0-9]+\.[0-9]+\.[0-9]+\.[0-9]+ " +
"Netmask: " + SocketAddressFamily.Internet + @" 255\.[0-9]+\.[0-9]+\.[0-9]+ " +
"Broadcast: " + SocketAddressFamily.Internet + @" 255.255.255.255",
address.ToString());
}
else
{
Assert.AreEqual(SocketAddressFamily.Internet6, address.Address.Family);
MoreAssert.IsMatch("Address: " + SocketAddressFamily.Internet6 + @" (?:[0-9A-F]{4}:){7}[0-9A-F]{4} " +
"Netmask: " + SocketAddressFamily.Unspecified + @" " + IpV6Address.Zero + " " +
"Broadcast: " + SocketAddressFamily.Unspecified + @" " + IpV6Address.Zero,
address.ToString());
}
}
PacketCommunicator communicator = device.Open();
try
{
MoreAssert.AreSequenceEqual(new[] { DataLinkKind.Ethernet, DataLinkKind.Docsis }.Select(kind => new PcapDataLink(kind)), communicator.SupportedDataLinks);
PacketTotalStatistics totalStatistics = communicator.TotalStatistics;
Assert.AreEqual <object>(totalStatistics, totalStatistics);
Assert.AreNotEqual(null, totalStatistics);
Assert.AreEqual(totalStatistics.GetHashCode(), totalStatistics.GetHashCode());
Assert.IsTrue(totalStatistics.Equals(totalStatistics));
Assert.IsFalse(totalStatistics.Equals(null));
Assert.AreNotEqual(null, totalStatistics);
Assert.AreNotEqual(totalStatistics, 2);
MoreAssert.IsSmallerOrEqual <uint>(1, totalStatistics.PacketsCaptured, "PacketsCaptured");
Assert.AreEqual <uint>(0, totalStatistics.PacketsDroppedByDriver, "PacketsDroppedByDriver");
Assert.AreEqual <uint>(0, totalStatistics.PacketsDroppedByInterface, "PacketsDroppedByInterface");
MoreAssert.IsSmallerOrEqual <uint>(1, totalStatistics.PacketsReceived, "PacketsReceived");
Assert.IsNotNull(totalStatistics.ToString());
communicator.SetKernelBufferSize(2 * 1024 * 1024); // 2 MB instead of 1
communicator.SetKernelMinimumBytesToCopy(10); // 10 bytes minimum to copy
communicator.SetSamplingMethod(new SamplingMethodNone());
Assert.AreEqual(DataLinkKind.Ethernet, communicator.DataLink.Kind);
communicator.DataLink = communicator.DataLink;
Assert.AreEqual("EN10MB (Ethernet)", communicator.DataLink.ToString());
Assert.AreEqual(communicator.DataLink, new PcapDataLink(communicator.DataLink.Name));
Assert.IsTrue(communicator.IsFileSystemByteOrder);
Assert.AreEqual(PacketCommunicatorMode.Capture, communicator.Mode);
Assert.IsFalse(communicator.NonBlocking);
Assert.AreEqual(PacketDevice.DefaultSnapshotLength, communicator.SnapshotLength);
return(communicator);
}
catch (Exception)
{
communicator.Dispose();
throw;
}
}
public void RandomIgmpTest()
{
EthernetLayer ethernetLayer = new EthernetLayer
{
Source = new MacAddress("00:01:02:03:04:05"),
Destination = new MacAddress("A0:A1:A2:A3:A4:A5")
};
int seed = new Random().Next();
Console.WriteLine("Seed: " + seed);
Random random = new Random(seed);
for (int i = 0; i != 200; ++i)
{
IpV4Layer ipV4Layer = random.NextIpV4Layer(null);
ipV4Layer.HeaderChecksum = null;
Layer ipLayer = random.NextBool() ? (Layer)ipV4Layer : random.NextIpV6Layer(IpV4Protocol.InternetGroupManagementProtocol, false);
IgmpLayer igmpLayer = random.NextIgmpLayer();
Packet packet = PacketBuilder.Build(DateTime.Now, ethernetLayer, ipLayer, igmpLayer);
Assert.IsTrue(packet.IsValid, "IsValid");
// Ethernet
ethernetLayer.EtherType = ipLayer == ipV4Layer ? EthernetType.IpV4 : EthernetType.IpV6;
Assert.AreEqual(ethernetLayer, packet.Ethernet.ExtractLayer(), "Ethernet Layer");
ethernetLayer.EtherType = EthernetType.None;
// IP.
if (ipV4Layer == ipLayer)
{
// IPv4.
ipV4Layer.Protocol = IpV4Protocol.InternetGroupManagementProtocol;
ipV4Layer.HeaderChecksum = ((IpV4Layer)packet.Ethernet.IpV4.ExtractLayer()).HeaderChecksum;
Assert.AreEqual(ipV4Layer, packet.Ethernet.IpV4.ExtractLayer(), "IPv4 Layer");
ipV4Layer.HeaderChecksum = null;
}
else
{
// IPv6.
Assert.AreEqual(ipLayer, packet.Ethernet.IpV6.ExtractLayer(), "IPv6 Layer");
}
// IGMP
Assert.IsTrue(packet.Ethernet.Ip.Igmp.IsChecksumCorrect);
Assert.AreEqual(igmpLayer, packet.Ethernet.Ip.Igmp.ExtractLayer(), "IGMP Layer");
Assert.AreEqual(igmpLayer.GetHashCode(), packet.Ethernet.Ip.Igmp.ExtractLayer().GetHashCode(), "IGMP Layer");
Assert.AreNotEqual(igmpLayer, null);
Assert.AreNotEqual(igmpLayer, random.NextPayloadLayer(igmpLayer.Length));
Assert.AreNotEqual(igmpLayer.GetHashCode(), random.NextPayloadLayer(igmpLayer.Length).GetHashCode());
if (packet.Ethernet.Ip.Igmp.QueryVersion != IgmpQueryVersion.Version3)
{
MoreAssert.IsSmallerOrEqual(IgmpDatagram.MaxMaxResponseTime, packet.Ethernet.Ip.Igmp.MaxResponseTime);
}
if (packet.Ethernet.Ip.Igmp.MessageType != IgmpMessageType.MembershipQuery)
{
Assert.AreEqual(IgmpQueryVersion.None, packet.Ethernet.Ip.Igmp.QueryVersion);
}
switch (igmpLayer.MessageTypeValue)
{
case IgmpMessageType.CreateGroupRequestVersion0:
case IgmpMessageType.CreateGroupReplyVersion0:
case IgmpMessageType.JoinGroupRequestVersion0:
case IgmpMessageType.JoinGroupReplyVersion0:
case IgmpMessageType.LeaveGroupRequestVersion0:
case IgmpMessageType.LeaveGroupReplyVersion0:
case IgmpMessageType.ConfirmGroupRequestVersion0:
case IgmpMessageType.ConfirmGroupReplyVersion0:
Assert.AreEqual(0, packet.Ethernet.Ip.Igmp.Version);
IgmpVersion0Layer igmpVersion0Layer = (IgmpVersion0Layer)igmpLayer;
Assert.AreEqual(igmpVersion0Layer.IdentifierValue, packet.Ethernet.Ip.Igmp.Identifier);
Assert.AreEqual(igmpVersion0Layer.AccessKeyValue, packet.Ethernet.Ip.Igmp.AccessKey);
switch (igmpLayer.MessageTypeValue)
{
case IgmpMessageType.CreateGroupRequestVersion0:
Assert.AreEqual(((IgmpCreateGroupRequestVersion0Layer)igmpLayer).CreateGroupRequestCode, packet.Ethernet.Ip.Igmp.CreateGroupRequestCode);
break;
case IgmpMessageType.CreateGroupReplyVersion0:
case IgmpMessageType.JoinGroupReplyVersion0:
case IgmpMessageType.LeaveGroupReplyVersion0:
case IgmpMessageType.ConfirmGroupReplyVersion0:
IgmpReplyVersion0Layer igmpReplyVersion0Layer = (IgmpReplyVersion0Layer)igmpVersion0Layer;
Assert.AreEqual(igmpReplyVersion0Layer.Code, packet.Ethernet.Ip.Igmp.ReplyCode);
if (packet.Ethernet.Ip.Igmp.ReplyCode == IgmpVersion0ReplyCode.RequestPendingRetryInThisManySeconds)
{
Assert.AreEqual(igmpReplyVersion0Layer.RetryInThisManySeconds, packet.Ethernet.Ip.Igmp.RetryInThisManySeconds);
}
break;
}
break;
case IgmpMessageType.MembershipQuery:
switch (igmpLayer.QueryVersion)
{
case IgmpQueryVersion.Version1:
Assert.AreEqual(1, packet.Ethernet.Ip.Igmp.Version);
break;
case IgmpQueryVersion.Version2:
Assert.AreEqual(2, packet.Ethernet.Ip.Igmp.Version);
break;
case IgmpQueryVersion.Version3:
Assert.AreEqual(3, packet.Ethernet.Ip.Igmp.Version);
break;
default:
Assert.Fail(igmpLayer.QueryVersion.ToString());
break;
}
break;
case IgmpMessageType.MembershipReportVersion1:
Assert.AreEqual(1, packet.Ethernet.Ip.Igmp.Version);
break;
case IgmpMessageType.MembershipReportVersion2:
case IgmpMessageType.LeaveGroupVersion2:
Assert.AreEqual(2, packet.Ethernet.Ip.Igmp.Version);
break;
case IgmpMessageType.MembershipReportVersion3:
Assert.AreEqual(3, packet.Ethernet.Ip.Igmp.Version);
break;
default:
Assert.Fail(igmpLayer.MessageTypeValue.ToString());
break;
}
foreach (IgmpGroupRecordDatagram groupRecord in packet.Ethernet.Ip.Igmp.GroupRecords)
{
Assert.IsNotNull(groupRecord.ToString());
}
}
}
public void RandomIgmpTest()
{
EthernetLayer ethernetLayer = new EthernetLayer
{
Source = new MacAddress("00:01:02:03:04:05"),
Destination = new MacAddress("A0:A1:A2:A3:A4:A5")
};
Random random = new Random();
IpV4Layer ipV4Layer = random.NextIpV4Layer(null);
ipV4Layer.HeaderChecksum = null;
for (int i = 0; i != 200; ++i)
{
IgmpLayer igmpLayer = random.NextIgmpLayer();
Packet packet = PacketBuilder.Build(DateTime.Now, ethernetLayer, ipV4Layer, igmpLayer);
Assert.IsTrue(packet.IsValid, "IsValid");
// Ethernet
ethernetLayer.EtherType = EthernetType.IpV4;
Assert.AreEqual(ethernetLayer, packet.Ethernet.ExtractLayer(), "Ethernet Layer");
// IPv4
ipV4Layer.Protocol = IpV4Protocol.InternetGroupManagementProtocol;
ipV4Layer.HeaderChecksum = ((IpV4Layer)packet.Ethernet.IpV4.ExtractLayer()).HeaderChecksum;
Assert.AreEqual(ipV4Layer, packet.Ethernet.IpV4.ExtractLayer(), "IPv4 Layer");
ipV4Layer.HeaderChecksum = null;
// IGMP
Assert.IsTrue(packet.Ethernet.IpV4.Igmp.IsChecksumCorrect);
Assert.AreEqual(igmpLayer, packet.Ethernet.IpV4.Igmp.ExtractLayer(), "IGMP Layer");
Assert.AreEqual(igmpLayer.GetHashCode(), packet.Ethernet.IpV4.Igmp.ExtractLayer().GetHashCode(), "IGMP Layer");
Assert.AreNotEqual(igmpLayer, null);
Assert.AreNotEqual(igmpLayer, random.NextPayloadLayer(igmpLayer.Length));
Assert.AreNotEqual(igmpLayer.GetHashCode(), random.NextPayloadLayer(igmpLayer.Length).GetHashCode());
if (packet.Ethernet.IpV4.Igmp.QueryVersion != IgmpQueryVersion.Version3)
{
MoreAssert.IsSmallerOrEqual(IgmpDatagram.MaxMaxResponseTime, packet.Ethernet.IpV4.Igmp.MaxResponseTime);
}
if (packet.Ethernet.IpV4.Igmp.MessageType != IgmpMessageType.MembershipQuery)
{
Assert.AreEqual(IgmpQueryVersion.None, packet.Ethernet.IpV4.Igmp.QueryVersion);
}
switch (igmpLayer.MessageType)
{
case IgmpMessageType.MembershipQuery:
switch (igmpLayer.QueryVersion)
{
case IgmpQueryVersion.Version1:
Assert.AreEqual(1, packet.Ethernet.IpV4.Igmp.Version);
break;
case IgmpQueryVersion.Version2:
Assert.AreEqual(2, packet.Ethernet.IpV4.Igmp.Version);
break;
case IgmpQueryVersion.Version3:
Assert.AreEqual(3, packet.Ethernet.IpV4.Igmp.Version);
break;
default:
Assert.Fail(igmpLayer.QueryVersion.ToString());
break;
}
break;
case IgmpMessageType.MembershipReportVersion1:
Assert.AreEqual(1, packet.Ethernet.IpV4.Igmp.Version);
break;
case IgmpMessageType.MembershipReportVersion2:
case IgmpMessageType.LeaveGroupVersion2:
Assert.AreEqual(2, packet.Ethernet.IpV4.Igmp.Version);
break;
case IgmpMessageType.MembershipReportVersion3:
Assert.AreEqual(3, packet.Ethernet.IpV4.Igmp.Version);
break;
default:
Assert.Fail(igmpLayer.MessageType.ToString());
break;
}
foreach (IgmpGroupRecordDatagram groupRecord in packet.Ethernet.IpV4.Igmp.GroupRecords)
{
Assert.IsNotNull(groupRecord.ToString());
}
}
}