/// <summary>
/// ICMP layers are equal if they have the same message type, code, checksum, variable and payload.
/// </summary>
public bool Equals(IcmpLayer other)
{
return(other != null &&
MessageType == other.MessageType && CodeValue == other.CodeValue &&
Checksum == other.Checksum &&
Variable == other.Variable &&
EqualPayload(other));
}
public bool Equals(IcmpLayer other)
{
if (other != null && this.MessageType == other.MessageType && (int)this.CodeValue == (int)other.CodeValue)
{
ushort?checksum1 = this.Checksum;
ushort?checksum2 = other.Checksum;
if (((int)checksum1.GetValueOrDefault() != (int)checksum2.GetValueOrDefault() ? 0 : (checksum1.HasValue == checksum2.HasValue ? 1 : 0)) != 0 && (int)this.Variable == (int)other.Variable)
{
return(this.EqualPayload(other));
}
}
return(false);
}
/// <summary>
/// True iff the OriginateTimestamp, ReceiveTimestamp and the TransmitTimestamp fields are equal.
/// </summary>
protected override sealed bool EqualPayload(IcmpLayer other)
{
return EqualPayload(other as IcmpTimestampLayer);
}
/// <summary>
/// True iff the ICMP payload is equal to the other ICMP payload.
/// </summary>
protected virtual bool EqualPayload(IcmpLayer other)
{
return(true);
}
/// <summary>
/// True iff the Entries are equal to the other ICMP entries.
/// </summary>
protected override bool EqualPayload(IcmpLayer other)
{
return EqualPayload(other as IcmpRouterAdvertisementLayer);
}
protected override sealed bool EqualPayload(IcmpLayer other)
{
return(this.EqualPayload(other as IcmpTimestampLayer));
}
/// <summary>
/// True iff the ICMP payload is equal to the other ICMP payload.
/// </summary>
protected virtual bool EqualPayload(IcmpLayer other)
{
return true;
}
/// <summary>
/// ICMP layers are equal if they have the same message type, code, checksum, variable and payload.
/// </summary>
public bool Equals(IcmpLayer other)
{
return other != null &&
MessageType == other.MessageType && CodeValue == other.CodeValue &&
Checksum == other.Checksum &&
Variable == other.Variable &&
EqualPayload(other);
}
public static IEnumerable<ILayer> NextIcmpPayloadLayers(this Random random, IcmpLayer icmpLayer)
{
IEnumerable<ILayer> icmpPayloadLayers = new List<ILayer>();
switch (icmpLayer.MessageType)
{
case IcmpMessageType.DestinationUnreachable:
case IcmpMessageType.TimeExceeded:
case IcmpMessageType.ParameterProblem:
case IcmpMessageType.SourceQuench:
case IcmpMessageType.Redirect:
case IcmpMessageType.SecurityFailures:
icmpPayloadLayers = IEnumerableExtensions.Concat(icmpPayloadLayers, random.NextIpV4Layer(), random.NextPayloadLayer(IcmpIpV4HeaderPlus64BitsPayloadDatagram.OriginalDatagramPayloadLength));
break;
case IcmpMessageType.ConversionFailed:
IpV4Layer icmpIpV4Layer = random.NextIpV4Layer();
icmpPayloadLayers = IEnumerableExtensions.Concat(icmpPayloadLayers, icmpIpV4Layer);
if (icmpLayer.MessageTypeAndCode == IcmpMessageTypeAndCode.ConversionFailedUnsupportedTransportProtocol)
{
icmpPayloadLayers =
IEnumerableExtensions.Concat(icmpPayloadLayers, random.NextPayloadLayer(
IcmpConversionFailedDatagram.OriginalDatagramLengthForUnsupportedTransportProtocol -
icmpIpV4Layer.Length));
}
else
{
switch (icmpIpV4Layer.Protocol)
{
case IpV4Protocol.Udp:
icmpPayloadLayers = IEnumerableExtensions.Concat(icmpPayloadLayers, random.NextUdpLayer(),
random.NextPayloadLayer(random.Next(100)));
break;
case IpV4Protocol.Tcp:
icmpPayloadLayers = IEnumerableExtensions.Concat(icmpPayloadLayers, random.NextTcpLayer(),
random.NextPayloadLayer(random.Next(100)));
break;
default:
icmpPayloadLayers = IEnumerableExtensions.Concat(icmpPayloadLayers, random.NextPayloadLayer(random.Next(200)));
break;
}
}
break;
case IcmpMessageType.Echo:
case IcmpMessageType.EchoReply:
case IcmpMessageType.Timestamp:
case IcmpMessageType.TimestampReply:
case IcmpMessageType.InformationRequest:
case IcmpMessageType.InformationReply:
case IcmpMessageType.RouterAdvertisement:
case IcmpMessageType.RouterSolicitation:
case IcmpMessageType.AddressMaskRequest:
case IcmpMessageType.AddressMaskReply:
case IcmpMessageType.TraceRoute:
case IcmpMessageType.DomainNameRequest:
break;
case IcmpMessageType.DomainNameReply:
default:
throw new InvalidOperationException("Invalid icmpMessageType " + icmpLayer.MessageType);
}
return icmpPayloadLayers;
}
/// <summary>
/// True iff the address mask is equal to the other address mask.
/// </summary>
protected sealed override bool EqualPayload(IcmpLayer other)
{
return(EqualPayload(other as IcmpAddressMaskRequestLayer));
}
/// <summary>
/// True iff the Entries are equal to the other ICMP entries.
/// </summary>
protected override bool EqualPayload(IcmpLayer other)
{
return(EqualPayload(other as IcmpRouterAdvertisementLayer));
}
/// <summary>
/// True iff the address mask is equal to the other address mask.
/// </summary>
protected override sealed bool EqualPayload(IcmpLayer other)
{
return EqualPayload(other as IcmpAddressMaskRequestLayer);
}
