private static void CompareTcpOptions(XElement element, TcpOptions options)
{
int currentOptionIndex = 0;
foreach (var field in element.Fields())
{
if (currentOptionIndex >= options.Count)
{
Assert.IsFalse(options.IsValid, "Options IsValid");
Assert.IsTrue(
field.Show().StartsWith("Unknown (0x0a) ") || // Unknown in Wireshark but known (and invalid) in Pcap.Net
field.Show().Contains("bytes says option goes past end of options") ||
field.Show().Contains(") (with too-short option length = "),
"Options show: " + field.Show());
Assert.AreEqual(options.Count, currentOptionIndex, "Options Count");
return;
}
TcpOption option = options[currentOptionIndex];
switch (field.Name())
{
case "":
switch (option.OptionType)
{
case TcpOptionType.SelectiveNegativeAcknowledgements: // TODO: Support Selective Negative Acknowledgements.
Assert.IsTrue(field.Show().StartsWith(option.GetWiresharkString()));
field.AssertNoFields();
break;
case (TcpOptionType)78: // TODO: Support Riverbed.
break;
default:
field.AssertShow(option.GetWiresharkString());
break;
}
switch (option.OptionType)
{
case TcpOptionType.WindowScale:
TcpOptionWindowScale windowScale = (TcpOptionWindowScale)option;
foreach (var subField in field.Fields())
{
switch (subField.Name())
{
case "tcp.option_kind":
subField.AssertShowDecimal((byte)windowScale.OptionType);
break;
case "tcp.option_len":
subField.AssertShowDecimal(windowScale.Length);
break;
case "tcp.options.wscale.shift":
subField.AssertShowDecimal(windowScale.ScaleFactorLog);
break;
case "tcp.options.wscale.multiplier":
subField.AssertShowDecimal(1L << (windowScale.ScaleFactorLog % 32));
break;
default:
throw new InvalidOperationException("Invalid tcp options subfield " + subField.Name());
}
}
break;
case TcpOptionType.SelectiveAcknowledgment:
var selectiveAcknowledgmentOption = (TcpOptionSelectiveAcknowledgment)option;
int blockIndex = 0;
foreach (var subField in field.Fields())
{
switch (subField.Name())
{
case "tcp.options.sack":
subField.AssertShowDecimal(true);
break;
case "tcp.options.sack_le":
subField.AssertShowDecimal(selectiveAcknowledgmentOption.Blocks[blockIndex].LeftEdge);
break;
case "tcp.options.sack_re":
subField.AssertShowDecimal(selectiveAcknowledgmentOption.Blocks[blockIndex].RightEdge);
++blockIndex;
break;
default:
throw new InvalidOperationException("Invalid tcp options subfield " + subField.Name());
}
}
break;
case TcpOptionType.Timestamp:
var timestampOption = (TcpOptionTimestamp)option;
foreach (var subField in field.Fields())
{
switch (subField.Name())
{
case "tcp.option_kind":
subField.AssertShowDecimal((byte)option.OptionType);
break;
case "tcp.option_len":
subField.AssertShowDecimal(option.Length);
break;
case "tcp.options.timestamp.tsval":
subField.AssertShowDecimal(timestampOption.TimestampValue);
break;
case "tcp.options.timestamp.tsecr":
subField.AssertShowDecimal(timestampOption.TimestampEchoReply);
break;
default:
throw new InvalidOperationException("Invalid tcp options subfield " + subField.Name());
}
}
break;
default:
field.AssertNoFields();
break;
}
++currentOptionIndex;
break;
case "tcp.options.mss":
Assert.AreEqual(TcpOptionType.MaximumSegmentSize, option.OptionType);
field.AssertShowDecimal(true);
field.AssertNoFields();
break;
case "tcp.options.mss_val":
field.AssertShowDecimal(((TcpOptionMaximumSegmentSize)option).MaximumSegmentSize);
field.AssertNoFields();
++currentOptionIndex;
break;
case "tcp.options.echo":
Assert.IsTrue(option is TcpOptionEchoReply || option is TcpOptionEcho);
field.AssertShowDecimal(1);
field.AssertNoFields();
break;
case "tcp.options.cc":
Assert.IsTrue(option is TcpOptionConnectionCountBase);
field.AssertShowDecimal(1);
field.AssertNoFields();
break;
case "tcp.options.scps.vector":
Assert.AreEqual((TcpOptionType)20, option.OptionType);
if (field.Show() == "0")
{
++currentOptionIndex;
}
++currentOptionIndex;
break;
case "tcp.options.scps":
Assert.AreEqual((TcpOptionType)20, option.OptionType);
Assert.IsFalse(field.Fields().Any());
break;
case "tcp.options.snack": // TODO: Support Selective Negative Acknowledgements.
case "tcp.options.snack.offset":
case "tcp.options.snack.size":
Assert.AreEqual(TcpOptionType.SelectiveNegativeAcknowledgements, option.OptionType);
field.AssertNoFields();
break;
case "tcp.options.sack_perm":
Assert.AreEqual(TcpOptionType.SelectiveAcknowledgmentPermitted, option.OptionType);
field.AssertNoFields();
++currentOptionIndex;
break;
case "tcp.options.rvbd.probe":
Assert.AreEqual((TcpOptionType)76, option.OptionType);
// TODO: Support Riverbed.
++currentOptionIndex;
break;
case "tcp.options.rvbd.trpy":
Assert.AreEqual((TcpOptionType)78, option.OptionType);
// TODO: Support Riverbed.
++currentOptionIndex;
break;
default:
throw new InvalidOperationException("Invalid tcp options field " + field.Name());
}
}
}
private static void CompareTcpOptions(XElement element, TcpOptions options)
{
int currentOptionIndex = 0;
foreach (var field in element.Fields())
{
if (field.Name() == "_ws.expert")
{
continue;
}
if (currentOptionIndex >= options.Count)
{
Assert.IsFalse(options.IsValid, "Options IsValid");
Assert.IsTrue(
field.Show().StartsWith("Unknown (0x09) ") || // Unknown in Wireshark but known (and invalid) in Pcap.Net.
field.Show().StartsWith("Unknown (0x0a) ") || // Unknown in Wireshark but known (and invalid) in Pcap.Net.
field.Show().StartsWith("Unknown (0x19) ") || // Unknown in Wireshark but known (and invalid) in Pcap.Net.
field.Show().StartsWith("Unknown (0x2d) ") || // Unknown in Wireshark and unknown and invalid in Pcap.Net.
field.Show().StartsWith("Unknown (0xa9) ") || // Unknown in Wireshark and unknown and invalid in Pcap.Net.
field.Show().StartsWith("Echo reply (with option length = ") ||
field.Show().Contains("bytes says option goes past end of options") ||
field.Show().Contains(") (with too-short option length = ") ||
field.Show().EndsWith(" (length byte past end of options)"),
"Options show: " + field.Show());
Assert.AreEqual(options.Count, currentOptionIndex, "Options Count");
return;
}
TcpOption option = options[currentOptionIndex];
switch (field.Name())
{
case "":
switch (option.OptionType)
{
case TcpOptionType.WindowScale:
TcpOptionWindowScale windowScale = (TcpOptionWindowScale)option;
byte scaleFactorLog = windowScale.ScaleFactorLog;
field.AssertShow(string.Format("Window scale: {0} (multiply by {1})", scaleFactorLog, (1L << (scaleFactorLog % 32))));
foreach (var subField in field.Fields())
{
if (HandleOptionCommonFields(subField, option))
{
continue;
}
switch (subField.Name())
{
case "tcp.options.wscale.shift":
subField.AssertShowDecimal(windowScale.ScaleFactorLog);
break;
case "tcp.options.wscale.multiplier":
subField.AssertShowDecimal(1L << (windowScale.ScaleFactorLog % 32));
break;
default:
throw new InvalidOperationException("Invalid tcp option subfield " + subField.Name());
}
}
break;
case TcpOptionType.SelectiveAcknowledgment:
var selectiveAcknowledgmentOption = (TcpOptionSelectiveAcknowledgment)option;
IEnumerable <TcpOptionSelectiveAcknowledgmentBlock> blocks = selectiveAcknowledgmentOption.Blocks;
field.AssertShow("SACK:" + (blocks.Count() == 0
? string.Empty
: ((TcpOptionSelectiveAcknowledgment)option).Blocks.SequenceToString(" ", " ")));
int blockIndex = 0;
foreach (var subField in field.Fields())
{
if (HandleOptionCommonFields(subField, option))
{
continue;
}
subField.AssertNoFields();
switch (subField.Name())
{
case "tcp.options.sack":
subField.AssertShowDecimal(true);
break;
case "tcp.options.sack_le":
subField.AssertShowDecimal(selectiveAcknowledgmentOption.Blocks[blockIndex].LeftEdge);
break;
case "tcp.options.sack_re":
subField.AssertShowDecimal(selectiveAcknowledgmentOption.Blocks[blockIndex].RightEdge);
++blockIndex;
break;
case "tcp.options.sack.count":
subField.AssertShowDecimal(selectiveAcknowledgmentOption.Blocks.Count);
break;
default:
throw new InvalidOperationException("Invalid tcp option subfield " + subField.Name());
}
}
break;
case TcpOptionType.Timestamp:
var timestampOption = (TcpOptionTimestamp)option;
field.AssertShow("Timestamps: TSval " + timestampOption.TimestampValue + ", TSecr " + timestampOption.TimestampEchoReply);
foreach (var subField in field.Fields())
{
if (HandleOptionCommonFields(subField, option))
{
continue;
}
subField.AssertNoFields();
switch (subField.Name())
{
case "tcp.options.timestamp.tsval":
subField.AssertShowDecimal(timestampOption.TimestampValue);
break;
case "tcp.options.timestamp.tsecr":
subField.AssertShowDecimal(timestampOption.TimestampEchoReply);
break;
default:
throw new InvalidOperationException("Invalid tcp option subfield " + subField.Name());
}
}
break;
case TcpOptionType.ConnectionCount:
field.AssertShow("CC: " + ((TcpOptionConnectionCount)option).ConnectionCount);
foreach (var subField in field.Fields())
{
if (HandleOptionCommonFields(subField, option))
{
continue;
}
subField.AssertNoFields();
switch (subField.Name())
{
default:
throw new InvalidOperationException("Invalid tcp option subfield " + subField.Name());
}
}
break;
case TcpOptionType.Echo:
field.AssertShow("Echo: " + ((TcpOptionEcho)option).Info);
foreach (var subField in field.Fields())
{
if (HandleOptionCommonFields(subField, option))
{
continue;
}
subField.AssertNoFields();
switch (subField.Name())
{
default:
throw new InvalidOperationException("Invalid tcp option subfield " + subField.Name());
}
}
break;
case TcpOptionType.ConnectionCountNew:
field.AssertShow("CC.NEW: " + ((TcpOptionConnectionCountNew)option).ConnectionCount);
foreach (var subField in field.Fields())
{
if (HandleOptionCommonFields(subField, option))
{
continue;
}
subField.AssertNoFields();
switch (subField.Name())
{
default:
throw new InvalidOperationException("Invalid tcp option subfield " + subField.Name());
}
}
break;
case TcpOptionType.EndOfOptionList:
field.AssertShow("End of Option List (EOL)");
foreach (var subField in field.Fields())
{
if (HandleOptionCommonFields(subField, option))
{
continue;
}
switch (subField.Name())
{
default:
subField.AssertNoFields();
throw new InvalidOperationException("Invalid tcp option subfield " + subField.Name());
}
}
break;
case TcpOptionType.ConnectionCountEcho:
field.AssertShow("CC.ECHO: " + ((TcpOptionConnectionCountEcho)option).ConnectionCount);
foreach (var subField in field.Fields())
{
if (HandleOptionCommonFields(subField, option))
{
continue;
}
subField.AssertNoFields();
switch (subField.Name())
{
default:
throw new InvalidOperationException("Invalid tcp option subfield " + subField.Name());
}
}
break;
case TcpOptionType.Md5Signature:
field.AssertShow("TCP MD5 signature");
foreach (var subField in field.Fields())
{
if (HandleOptionCommonFields(subField, option))
{
continue;
}
switch (subField.Name())
{
case "tcp.options.type":
subField.AssertShowDecimal((byte)TcpOptionType.Md5Signature);
break;
default:
subField.AssertNoFields();
throw new InvalidOperationException("Invalid tcp option subfield " + subField.Name());
}
}
break;
case TcpOptionType.NoOperation:
field.AssertShow("No-Operation (NOP)");
foreach (var subField in field.Fields())
{
if (HandleOptionCommonFields(subField, option))
{
continue;
}
throw new InvalidOperationException("Invalid tcp option subfield " + subField.Name());
}
break;
case TcpOptionType.EchoReply:
field.AssertShow("Echo reply: " + ((TcpOptionEchoReply)option).Info);
foreach (var subField in field.Fields())
{
if (HandleOptionCommonFields(subField, option))
{
continue;
}
throw new InvalidOperationException("Invalid tcp option subfield " + subField.Name());
}
break;
case TcpOptionType.SelectiveAcknowledgmentPermitted:
field.AssertShow("SACK permitted");
field.AssertNoFields();
break;
case TcpOptionType.SelectiveNegativeAcknowledgements: // TODO: Support Selective Negative Acknowledgements.
Assert.IsTrue(field.Show().StartsWith("SACK permitted"));
field.AssertNoFields();
break;
case (TcpOptionType)20:
// TODO: Support 20.
field.AssertShow("SCPS capabilities" + (option.Length >= 4
? string.Empty
: " (with option length = " + option.Length + " bytes; should be >= 4)"));
break;
case (TcpOptionType)22:
field.AssertShow("SCPS record boundary (with option length = " + option.Length + " bytes; should be 2)");
// TODO: Support 22.
break;
case (TcpOptionType)23:
field.AssertShow("SCPS corruption experienced (with option length = " + option.Length + " bytes; should be 2)");
// TODO: Support 23.
break;
case (TcpOptionType)30:
// TODO: Support 30.
Assert.IsTrue(field.Show().StartsWith("Multipath TCP"));
break;
case (TcpOptionType)78:
field.AssertShow("Riverbed Transparency (with option length = " + option.Length + " bytes; should be 16)");
// TODO: Support 78 - Support Riverbed.
break;
case TcpOptionType.PartialOrderConnectionPermitted: // 9.
case TcpOptionType.PartialOrderServiceProfile: // 10.
case TcpOptionType.AlternateChecksumRequest: // 14.
case TcpOptionType.AlternateChecksumData: // 15.
case TcpOptionType.Mood: // 25.
case TcpOptionType.TcpAuthentication: // 29.
field.AssertShow(string.Format("Unknown (0x{0}) ({1} bytes)", ((byte)option.OptionType).ToString("x2"), option.Length));
field.AssertNoFields();
break;
default:
field.AssertNoFields();
field.AssertShow("Unknown (0x" + ((byte)option.OptionType).ToString("x") + ") (" + option.Length + " bytes)");
break;
}
++currentOptionIndex;
break;
case "tcp.options.mss":
Assert.AreEqual(TcpOptionType.MaximumSegmentSize, option.OptionType);
var maximumSegmentSize = (TcpOptionMaximumSegmentSize)option;
field.AssertShowname("Maximum segment size: " + maximumSegmentSize.MaximumSegmentSize + " bytes");
foreach (var subField in field.Fields())
{
if (HandleOptionCommonFields(subField, option))
{
continue;
}
subField.AssertNoFields();
switch (subField.Name())
{
case "tcp.options.mss_val":
subField.AssertShowDecimal(maximumSegmentSize.MaximumSegmentSize);
break;
default:
throw new InvalidOperationException("Invalid tcp options subfield " + subField.Name());
}
}
++currentOptionIndex;
break;
case "tcp.options.mss_val":
field.AssertShowDecimal(((TcpOptionMaximumSegmentSize)option).MaximumSegmentSize);
field.AssertNoFields();
++currentOptionIndex;
break;
case "tcp.options.echo":
Assert.IsTrue(option is TcpOptionEchoReply || option is TcpOptionEcho);
field.AssertShowDecimal(1);
field.AssertNoFields();
break;
case "tcp.options.cc":
Assert.IsTrue(option is TcpOptionConnectionCountBase);
field.AssertShowDecimal(1);
field.AssertNoFields();
break;
case "tcp.options.scps.vector":
// TODO: Support 20.
Assert.AreEqual((TcpOptionType)20, option.OptionType);
// if (field.Show() == "0")
// ++currentOptionIndex;
++currentOptionIndex;
break;
case "tcp.options.scps":
// TODO: Support 20.
Assert.AreEqual((TcpOptionType)20, option.OptionType);
Assert.IsFalse(field.Fields().Any());
break;
case "tcp.options.snack": // TODO: Support Selective Negative Acknowledgements.
case "tcp.options.snack.offset":
case "tcp.options.snack.size":
Assert.AreEqual(TcpOptionType.SelectiveNegativeAcknowledgements, option.OptionType);
field.AssertNoFields();
break;
case "tcp.options.sack_perm":
Assert.AreEqual(TcpOptionType.SelectiveAcknowledgmentPermitted, option.OptionType);
foreach (var subField in field.Fields())
{
if (HandleOptionCommonFields(subField, option))
{
continue;
}
subField.AssertNoFields();
throw new InvalidOperationException("Invalid tcp options subfield " + subField.Name());
}
++currentOptionIndex;
break;
case "tcp.options.rvbd.probe":
Assert.AreEqual((TcpOptionType)76, option.OptionType);
// TODO: Support Riverbed.
++currentOptionIndex;
break;
case "tcp.options.rvbd.trpy":
Assert.AreEqual((TcpOptionType)78, option.OptionType);
// TODO: Support Riverbed.
++currentOptionIndex;
break;
case "tcp.options.experimental":
Assert.IsTrue(new [] { (TcpOptionType)253, (TcpOptionType)254 }.Contains(option.OptionType));
// TODO: Support Experimental.
++currentOptionIndex;
break;
default:
throw new InvalidOperationException("Invalid tcp options field " + field.Name());
}
}
}
