public void IpV4OptionTimedAddressTest()
{
IpV4OptionTimedAddress timedAddress1 = new IpV4OptionTimedAddress(new IpV4Address("1.2.3.4"), new IpV4TimeOfDay(new TimeSpan(1, 2, 3)));
IpV4OptionTimedAddress timedAddress2 = new IpV4OptionTimedAddress(new IpV4Address("1.2.3.4"), new IpV4TimeOfDay(new TimeSpan(1, 2, 3)));
Assert.AreEqual(timedAddress1, timedAddress2);
Assert.IsTrue(timedAddress1 == timedAddress2);
Assert.IsFalse(timedAddress1 != timedAddress2);
Assert.IsFalse(timedAddress1.Equals(0));
}
internal static IpV4OptionTimestampAndAddress Read(IpV4OptionTimestampType timestampType, byte overflow, byte pointedIndex, byte[] buffer, ref int offset, int numValues)
{
if (numValues % 2 != 0)
return null;
IpV4OptionTimedAddress[] addressesAndTimestamps = new IpV4OptionTimedAddress[numValues / 2];
for (int i = 0; i != numValues / 2; ++i)
{
addressesAndTimestamps[i] = new IpV4OptionTimedAddress(buffer.ReadIpV4Address(ref offset, Endianity.Big),
buffer.ReadIpV4TimeOfDay(ref offset, Endianity.Big));
}
return new IpV4OptionTimestampAndAddress(timestampType, overflow, pointedIndex, addressesAndTimestamps);
}
public static IpV4Option NextIpV4Option(this Random random, int maximumOptionLength)
{
if (maximumOptionLength == 0)
{
throw new ArgumentOutOfRangeException("maximumOptionLength", maximumOptionLength, "option length must be positive");
}
if (maximumOptionLength >= IpV4OptionUnknown.OptionMinimumLength && random.Next(100) > 90)
{
return(random.NextIpV4OptionUnknown(maximumOptionLength));
}
// TODO: Support MTU Probe, MTU Reply and CommercialSecurity.
List <IpV4OptionType> impossibleOptionTypes = new List <IpV4OptionType>
{
IpV4OptionType.MaximumTransmissionUnitProbe,
IpV4OptionType.MaximumTransmissionUnitReply,
IpV4OptionType.CommercialSecurity,
};
if (maximumOptionLength < IpV4OptionBasicSecurity.OptionMinimumLength)
{
impossibleOptionTypes.Add(IpV4OptionType.BasicSecurity);
}
if (maximumOptionLength < IpV4OptionRoute.OptionMinimumLength)
{
impossibleOptionTypes.Add(IpV4OptionType.LooseSourceRouting);
impossibleOptionTypes.Add(IpV4OptionType.StrictSourceRouting);
impossibleOptionTypes.Add(IpV4OptionType.RecordRoute);
}
if (maximumOptionLength < IpV4OptionStreamIdentifier.OptionLength)
{
impossibleOptionTypes.Add(IpV4OptionType.StreamIdentifier);
}
if (maximumOptionLength < IpV4OptionTimestamp.OptionMinimumLength)
{
impossibleOptionTypes.Add(IpV4OptionType.InternetTimestamp);
}
if (maximumOptionLength < IpV4OptionTraceRoute.OptionLength)
{
impossibleOptionTypes.Add(IpV4OptionType.TraceRoute);
}
if (maximumOptionLength < IpV4OptionQuickStart.OptionLength)
{
impossibleOptionTypes.Add(IpV4OptionType.QuickStart);
}
IpV4OptionType optionType = random.NextEnum <IpV4OptionType>(impossibleOptionTypes);
switch (optionType)
{
case IpV4OptionType.EndOfOptionList:
return(IpV4Option.End);
case IpV4OptionType.NoOperation:
return(IpV4Option.Nop);
case IpV4OptionType.BasicSecurity:
IpV4OptionSecurityProtectionAuthorities protectionAuthorities = IpV4OptionSecurityProtectionAuthorities.None;
int protectionAuthorityLength = random.Next(maximumOptionLength - IpV4OptionBasicSecurity.OptionMinimumLength);
if (protectionAuthorityLength > 0)
{
protectionAuthorities = random.NextEnum <IpV4OptionSecurityProtectionAuthorities>();
}
return(new IpV4OptionBasicSecurity(random.NextEnum(IpV4OptionSecurityClassificationLevel.None),
protectionAuthorities,
(byte)(IpV4OptionBasicSecurity.OptionMinimumLength + protectionAuthorityLength)));
case IpV4OptionType.LooseSourceRouting:
case IpV4OptionType.StrictSourceRouting:
case IpV4OptionType.RecordRoute:
int numAddresses = random.Next((maximumOptionLength - IpV4OptionRoute.OptionMinimumLength) / 4 + 1);
IpV4Address[] addresses = random.NextIpV4Addresses(numAddresses);
byte pointedAddressIndex;
if (random.NextBool())
{
pointedAddressIndex = random.NextByte(IpV4OptionRoute.PointedAddressIndexMaxValue + 1);
}
else
{
pointedAddressIndex = random.NextByte(10);
}
switch (optionType)
{
case IpV4OptionType.LooseSourceRouting:
return(new IpV4OptionLooseSourceRouting(addresses, pointedAddressIndex));
case IpV4OptionType.StrictSourceRouting:
return(new IpV4OptionStrictSourceRouting(addresses, pointedAddressIndex));
case IpV4OptionType.RecordRoute:
return(new IpV4OptionRecordRoute(pointedAddressIndex, addresses));
default:
throw new InvalidOperationException("optionType = " + optionType);
}
case IpV4OptionType.StreamIdentifier:
return(new IpV4OptionStreamIdentifier(random.NextUShort()));
case IpV4OptionType.InternetTimestamp:
IpV4OptionTimestampType timestampType = random.NextEnum <IpV4OptionTimestampType>();
byte overflow = random.NextByte(IpV4OptionTimestamp.OverflowMaxValue + 1);
byte pointedIndex;
if (random.NextBool())
{
pointedIndex = random.NextByte(IpV4OptionTimestamp.PointedIndexMaxValue + 1);
}
else
{
pointedIndex = random.NextByte(10);
}
switch (timestampType)
{
case IpV4OptionTimestampType.TimestampOnly:
int numTimestamps = random.Next((maximumOptionLength - IpV4OptionTimestamp.OptionMinimumLength) / 4 + 1);
IpV4TimeOfDay[] timestamps = ((Func <IpV4TimeOfDay>)random.NextIpV4TimeOfDay).GenerateArray(numTimestamps);
return(new IpV4OptionTimestampOnly(overflow, pointedIndex, timestamps));
case IpV4OptionTimestampType.AddressAndTimestamp:
case IpV4OptionTimestampType.AddressPrespecified:
int numPairs = random.Next((maximumOptionLength - IpV4OptionTimestamp.OptionMinimumLength) / 8 + 1);
IpV4OptionTimedAddress[] pairs = new IpV4OptionTimedAddress[numPairs];
for (int i = 0; i != numPairs; ++i)
{
pairs[i] = new IpV4OptionTimedAddress(random.NextIpV4Address(), random.NextIpV4TimeOfDay());
}
return(new IpV4OptionTimestampAndAddress(timestampType, overflow, pointedIndex, pairs));
default:
throw new InvalidOperationException("timestampType = " + timestampType);
}
case IpV4OptionType.TraceRoute:
return(new IpV4OptionTraceRoute(random.NextUShort(), random.NextUShort(), random.NextUShort(), random.NextIpV4Address()));
case IpV4OptionType.RouterAlert:
return(new IpV4OptionRouterAlert(random.NextUShort()));
case IpV4OptionType.QuickStart:
return(new IpV4OptionQuickStart(random.NextEnum <IpV4OptionQuickStartFunction>(),
random.NextByte(IpV4OptionQuickStart.RateMaximumValue + 1),
random.NextByte(),
random.NextUInt() & 0x3FFFFFFF));
default:
throw new InvalidOperationException("optionType = " + optionType);
}
}
public void IpV4OptionTimedAddressTest()
{
IpV4OptionTimedAddress timedAddress1 = new IpV4OptionTimedAddress(new IpV4Address("1.2.3.4"), new IpV4TimeOfDay(new TimeSpan(1, 2, 3)));
IpV4OptionTimedAddress timedAddress2 = new IpV4OptionTimedAddress(new IpV4Address("1.2.3.4"), new IpV4TimeOfDay(new TimeSpan(1, 2, 3)));
Assert.AreEqual(timedAddress1, timedAddress2);
Assert.IsTrue(timedAddress1 == timedAddress2);
Assert.IsFalse(timedAddress1 != timedAddress2);
Assert.IsFalse(timedAddress1.Equals(0));
}
public static IpV4Option NextIpV4Option(this Random random, int maximumOptionLength)
{
if (maximumOptionLength == 0)
throw new ArgumentOutOfRangeException("maximumOptionLength", maximumOptionLength, "option length must be positive");
if (maximumOptionLength >= IpV4OptionUnknown.OptionMinimumLength && random.Next(100) > 90)
return random.NextIpV4OptionUnknown(maximumOptionLength);
// TODO: Support MTU Probe, MTU Reply and CommercialSecurity.
List<IpV4OptionType> impossibleOptionTypes = new List<IpV4OptionType>
{
IpV4OptionType.MaximumTransmissionUnitProbe,
IpV4OptionType.MaximumTransmissionUnitReply,
IpV4OptionType.CommercialSecurity,
};
if (maximumOptionLength < IpV4OptionBasicSecurity.OptionMinimumLength)
impossibleOptionTypes.Add(IpV4OptionType.BasicSecurity);
if (maximumOptionLength < IpV4OptionRoute.OptionMinimumLength)
{
impossibleOptionTypes.Add(IpV4OptionType.LooseSourceRouting);
impossibleOptionTypes.Add(IpV4OptionType.StrictSourceRouting);
impossibleOptionTypes.Add(IpV4OptionType.RecordRoute);
}
if (maximumOptionLength < IpV4OptionStreamIdentifier.OptionLength)
impossibleOptionTypes.Add(IpV4OptionType.StreamIdentifier);
if (maximumOptionLength < IpV4OptionTimestamp.OptionMinimumLength)
impossibleOptionTypes.Add(IpV4OptionType.InternetTimestamp);
if (maximumOptionLength < IpV4OptionTraceRoute.OptionLength)
impossibleOptionTypes.Add(IpV4OptionType.TraceRoute);
if (maximumOptionLength < IpV4OptionQuickStart.OptionLength)
impossibleOptionTypes.Add(IpV4OptionType.QuickStart);
IpV4OptionType optionType = random.NextEnum<IpV4OptionType>(impossibleOptionTypes);
switch (optionType)
{
case IpV4OptionType.EndOfOptionList:
return IpV4Option.End;
case IpV4OptionType.NoOperation:
return IpV4Option.Nop;
case IpV4OptionType.BasicSecurity:
IpV4OptionSecurityProtectionAuthorities protectionAuthorities = IpV4OptionSecurityProtectionAuthorities.None;
int protectionAuthorityLength = random.Next(maximumOptionLength - IpV4OptionBasicSecurity.OptionMinimumLength);
if (protectionAuthorityLength > 0)
protectionAuthorities = random.NextEnum<IpV4OptionSecurityProtectionAuthorities>();
return new IpV4OptionBasicSecurity(random.NextEnum(IpV4OptionSecurityClassificationLevel.None),
protectionAuthorities,
(byte)(IpV4OptionBasicSecurity.OptionMinimumLength + protectionAuthorityLength));
case IpV4OptionType.LooseSourceRouting:
case IpV4OptionType.StrictSourceRouting:
case IpV4OptionType.RecordRoute:
int numAddresses = random.Next((maximumOptionLength - IpV4OptionRoute.OptionMinimumLength) / 4 + 1);
IpV4Address[] addresses = random.NextIpV4Addresses(numAddresses);
byte pointedAddressIndex;
if (random.NextBool())
pointedAddressIndex = random.NextByte(IpV4OptionRoute.PointedAddressIndexMaxValue + 1);
else
pointedAddressIndex = random.NextByte(10);
switch (optionType)
{
case IpV4OptionType.LooseSourceRouting:
return new IpV4OptionLooseSourceRouting(addresses, pointedAddressIndex);
case IpV4OptionType.StrictSourceRouting:
return new IpV4OptionStrictSourceRouting(addresses, pointedAddressIndex);
case IpV4OptionType.RecordRoute:
return new IpV4OptionRecordRoute(pointedAddressIndex, addresses);
default:
throw new InvalidOperationException("optionType = " + optionType);
}
case IpV4OptionType.StreamIdentifier:
return new IpV4OptionStreamIdentifier(random.NextUShort());
case IpV4OptionType.InternetTimestamp:
IpV4OptionTimestampType timestampType = random.NextEnum<IpV4OptionTimestampType>();
byte overflow = random.NextByte(IpV4OptionTimestamp.OverflowMaxValue + 1);
byte pointedIndex;
if (random.NextBool())
pointedIndex = random.NextByte(IpV4OptionTimestamp.PointedIndexMaxValue + 1);
else
pointedIndex = random.NextByte(10);
switch (timestampType)
{
case IpV4OptionTimestampType.TimestampOnly:
int numTimestamps = random.Next((maximumOptionLength - IpV4OptionTimestamp.OptionMinimumLength) / 4 + 1);
IpV4TimeOfDay[] timestamps = ((Func<IpV4TimeOfDay>)random.NextIpV4TimeOfDay).GenerateArray(numTimestamps);
return new IpV4OptionTimestampOnly(overflow, pointedIndex, timestamps);
case IpV4OptionTimestampType.AddressAndTimestamp:
case IpV4OptionTimestampType.AddressPrespecified:
int numPairs = random.Next((maximumOptionLength - IpV4OptionTimestamp.OptionMinimumLength) / 8 + 1);
IpV4OptionTimedAddress[] pairs = new IpV4OptionTimedAddress[numPairs];
for (int i = 0; i != numPairs; ++i)
pairs[i] = new IpV4OptionTimedAddress(random.NextIpV4Address(), random.NextIpV4TimeOfDay());
return new IpV4OptionTimestampAndAddress(timestampType, overflow, pointedIndex, pairs);
default:
throw new InvalidOperationException("timestampType = " + timestampType);
}
case IpV4OptionType.TraceRoute:
return new IpV4OptionTraceRoute(random.NextUShort(), random.NextUShort(), random.NextUShort(), random.NextIpV4Address());
case IpV4OptionType.RouterAlert:
return new IpV4OptionRouterAlert(random.NextUShort());
case IpV4OptionType.QuickStart:
return new IpV4OptionQuickStart(random.NextEnum<IpV4OptionQuickStartFunction>(),
random.NextByte(IpV4OptionQuickStart.RateMaximumValue + 1),
random.NextByte(),
random.NextUInt() & 0x3FFFFFFF);
default:
throw new InvalidOperationException("optionType = " + optionType);
}
}
