IndexOutOfRangeException when parse packet

[russianbullet]

Hello dear @chmorgan

When I'm parsing the following packet I get this error :

byte[] b = new byte[]{0,140,250,155,238,45,8,158,1,238,86,55,8,0,69,0,0,23,59,214,0,185,128,6,44,53,192,168,6,1,192,168,6,2,158,163,173};
PacketDotNet.Packet packet = PacketDotNet.Packet.ParsePacket(LinkLayers.Ethernet,b );

An unhandled exception of type 'System.IndexOutOfRangeException' occurred in PacketDotNet.dll Additional information: Index was outside the bounds of the array.

[russianbullet]

Sorry, the packetdotnet was old, i recompiled the new sourcecode and now it's working

[stricq]

I still get this exception with the Nuget version. It only happens on TCPv6 packets. Version 0.13.0

Will you be updating the Nuget package?

at PacketDotNet.TcpPacket.get_DataOffset() at PacketDotNet.TcpPacket..ctor(ByteArraySegment bas) at PacketDotNet.TcpPacket..ctor(ByteArraySegment bas, Packet ParentPacket) at PacketDotNet.IpPacket.ParseEncapsulatedBytes(ByteArraySegment payload, IPProtocolType ProtocolType, Packet ParentPacket) at PacketDotNet.IPv6Packet..ctor(ByteArraySegment bas) at PacketDotNet.EthernetPacket.ParseEncapsulatedBytes(ByteArraySegment Header, EthernetPacketType Type) at PacketDotNet.EthernetPacket..ctor(ByteArraySegment bas) at PacketDotNet.Packet.ParsePacket(LinkLayers LinkLayer, Byte[] PacketData) at TcpMonitor.Repository.Services.PacketCaptureService.onDevicePacketArrival(Object sender, CaptureEventArgs args) in D:\Visual Studio Projects\TcpMonitor\TcpMonitor.Repository\Services\PacketCaptureService.cs:line 47 at SharpPcap.LibPcap.PcapDevice.SendPacketArrivalEvent(RawCapture p) at SharpPcap.WinPcap.WinPcapDevice.SendPacketArrivalEvent(RawCapture p) at SharpPcap.LibPcap.PcapDevice.PacketHandler(IntPtr param, IntPtr header, IntPtr data) at SharpPcap.LibPcap.LibPcapSafeNativeMethods.pcap_dispatch(IntPtr adaptHandle, Int32 count, pcap_handler callback, IntPtr ptr) at SharpPcap.LibPcap.PcapDevice.CaptureThread() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart()

[patrious]

Have you tested this with the latest 0.19 version?

[chmorgan]

@stricq I think you may be using someone elses package, this is the official package: https://www.nuget.org/packages/PacketDotNet/

[stricq]

@chmorgan I'm quite certain I'm using your nuget package. I just updated to the version you just released (0.19.1) and I'm still getting the exception. Here is my line of code:

if (packet.Extract(typeof(TcpPacket)) is TcpPacket tcpPacket) {

Here is the full project: https://github.com/stricq/TcpMonitor

It is the Extract method where the exception happens.

   at PacketDotNet.MiscUtil.Conversion.EndianBitConverter.CheckByteArgument(Byte[] value, Int32 startIndex, Int32 bytesRequired)
   at PacketDotNet.TcpPacket.get_DataOffsetAndFlags()
   at PacketDotNet.TcpPacket..ctor(ByteArraySegment bas, Packet parentPacket)
   at PacketDotNet.IPPacket.ParseEncapsulatedBytes(ByteArraySegment payload, IPProtocolType protocolType, Packet parentPacket)
   at System.Lazy`1.CreateValue()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Lazy`1.get_Value()
   at PacketDotNet.Packet.ToString(StringOutputType outputFormat)
   at PacketDotNet.IPv6Packet.ToString(StringOutputType outputFormat)
   at PacketDotNet.EthernetPacket.ToString(StringOutputType outputFormat)

[stricq]

Here is a Json.net dump of the raw packet data that throws the exception:

{ "Data": "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", "LinkLayerType": 1, "Timeval": { "Seconds": 1534989866, "MicroSeconds": 710068, "Date": "2018-08-23T02:04:26.710068Z" } }

[stricq]

0.19.2 still has the same exception.

[chmorgan]

Hi @stricq, closing this out. Please retest with the latest version and reopen if there is still an issue.