internal static PacketOrByteArraySegment ParseEncapsulatedBytes(ByteArraySegment payload, FlagsRadioTapField flagsField)
{
var payloadPacketOrData = new PacketOrByteArraySegment();
MacFrame frame = null;
if (flagsField != null)
{
bool fcsPresent = ((flagsField.Flags & RadioTapFlags.FcsIncludedInFrame) == RadioTapFlags.FcsIncludedInFrame);
if (fcsPresent)
{
frame = MacFrame.ParsePacketWithFcs(payload);
}
else
{
frame = MacFrame.ParsePacket(payload);
}
}
else
{
frame = MacFrame.ParsePacket(payload);
}
if (frame == null)
{
payloadPacketOrData.TheByteArraySegment = payload;
}
else
{
payloadPacketOrData.ThePacket = frame;
}
return(payloadPacketOrData);
}
public void Test_Constructor_ConstructWithValues()
{
QosNullDataFrame frame = new QosNullDataFrame();
frame.FrameControl.ToDS = false;
frame.FrameControl.FromDS = true;
frame.FrameControl.MoreFragments = true;
frame.SequenceControl.SequenceNumber = 0x89;
frame.SequenceControl.FragmentNumber = 0x1;
frame.Duration.Field = 0x1234;
frame.QosControl = 0x9876;
frame.DestinationAddress = PhysicalAddress.Parse("111111111111");
frame.SourceAddress = PhysicalAddress.Parse("222222222222");
frame.BssId = PhysicalAddress.Parse("333333333333");
frame.PayloadData = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05 };
frame.AppendFcs = true;
frame.UpdateFrameCheckSequence();
UInt32 fcs = frame.FrameCheckSequence;
//serialize the frame into a byte buffer
var bytes = frame.Bytes;
var bas = new ByteArraySegment(bytes);
//create a new frame that should be identical to the original
QosNullDataFrame recreatedFrame = MacFrame.ParsePacketWithFcs(bas) as QosNullDataFrame;
Assert.AreEqual(FrameControlField.FrameSubTypes.QosNullData, recreatedFrame.FrameControl.SubType);
Assert.IsFalse(recreatedFrame.FrameControl.ToDS);
Assert.IsTrue(recreatedFrame.FrameControl.FromDS);
Assert.IsTrue(recreatedFrame.FrameControl.MoreFragments);
Assert.AreEqual(0x89, recreatedFrame.SequenceControl.SequenceNumber);
Assert.AreEqual(0x1, recreatedFrame.SequenceControl.FragmentNumber);
Assert.AreEqual(0x9876, recreatedFrame.QosControl);
Assert.AreEqual("111111111111", recreatedFrame.DestinationAddress.ToString().ToUpper());
Assert.AreEqual("222222222222", recreatedFrame.SourceAddress.ToString().ToUpper());
Assert.AreEqual("333333333333", recreatedFrame.BssId.ToString().ToUpper());
Assert.AreEqual(fcs, recreatedFrame.FrameCheckSequence);
}
public void Test_Constructor_ConstructWithValues()
{
var frame = new NullDataFrame
{
FrameControl = { ToDS = false, FromDS = true, MoreFragments = true },
SequenceControl = { SequenceNumber = 0x89, FragmentNumber = 0x1 },
Duration = { Field = 0x1234 },
DestinationAddress = PhysicalAddress.Parse("111111111111"),
SourceAddress = PhysicalAddress.Parse("222222222222"),
BssId = PhysicalAddress.Parse("333333333333"),
PayloadData = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05 },
AppendFcs = true
};
frame.UpdateFrameCheckSequence();
var fcs = frame.FrameCheckSequence;
//serialize the frame into a byte buffer
var bytes = frame.Bytes;
var byteArraySegment = new ByteArraySegment(bytes);
//create a new frame that should be identical to the original
var recreatedFrame = MacFrame.ParsePacketWithFcs(byteArraySegment) as NullDataFrame;
Assert.AreEqual(FrameControlField.FrameSubTypes.DataNullFunctionNoData, recreatedFrame.FrameControl.SubType);
Assert.IsFalse(recreatedFrame.FrameControl.ToDS);
Assert.IsTrue(recreatedFrame.FrameControl.FromDS);
Assert.IsTrue(recreatedFrame.FrameControl.MoreFragments);
Assert.AreEqual(0x89, recreatedFrame.SequenceControl.SequenceNumber);
Assert.AreEqual(0x1, recreatedFrame.SequenceControl.FragmentNumber);
Assert.AreEqual("111111111111", recreatedFrame.DestinationAddress.ToString().ToUpper());
Assert.AreEqual("222222222222", recreatedFrame.SourceAddress.ToString().ToUpper());
Assert.AreEqual("333333333333", recreatedFrame.BssId.ToString().ToUpper());
Assert.AreEqual(fcs, recreatedFrame.FrameCheckSequence);
}
/// <summary>
/// Used by the Ieee80211PpiPacket constructor.
/// </summary>
/// <param name="header">
/// A <see cref="ByteArraySegment" />
/// </param>
/// <param name="commonField">
/// The <see cref="PpiCommon" /> object in the PPI packet or null if not available
/// </param>
/// <returns>
/// A <see cref="PacketOrByteArraySegment" />
/// </returns>
internal static PacketOrByteArraySegment ParseEncapsulatedBytes(ByteArraySegment header, PpiCommon commonField)
{
// slice off the payload
var payload = header.EncapsulatedBytes();
var payloadPacketOrData = new PacketOrByteArraySegment();
MacFrame frame = null;
if (commonField != null)
{
var fcsPresent = ((commonField.Flags & PpiCommon.CommonFlags.FcsIncludedInFrame) == PpiCommon.CommonFlags.FcsIncludedInFrame);
if (fcsPresent)
{
frame = MacFrame.ParsePacketWithFcs(payload);
}
else
{
frame = MacFrame.ParsePacket(payload);
}
}
else
{
frame = MacFrame.ParsePacket(payload);
}
if (frame == null)
{
payloadPacketOrData.TheByteArraySegment = payload;
}
else
{
payloadPacketOrData.ThePacket = frame;
}
return(payloadPacketOrData);
}