private static bool readNetworkHeaders(BinaryReader binaryReader)
{
EthernetHeader ethernetHeader = EthernetHeader.read(binaryReader);
// Skip non-IP packets
if (ethernetHeader.proto != 8)
{
throw new InvalidDataException();
}
IpHeader ipHeader = IpHeader.read(binaryReader);
// Skip non-UDP packets
if (ipHeader.proto != 17)
{
throw new InvalidDataException();
}
UdpHeader udpHeader = UdpHeader.read(binaryReader);
bool isSend = (udpHeader.dPort >= 9000 && udpHeader.dPort <= 9013);
bool isRecv = (udpHeader.sPort >= 9000 && udpHeader.sPort <= 9013);
// Skip non-AC-port packets
if (!isSend && !isRecv)
{
throw new InvalidDataException();
}
return(isSend);
}
private int readPacketRecordData(BinaryReader binaryReader, long len, uint tsSec, long curPacket, bool dontList)
{
// Begin reading headers
long packetStartPos = binaryReader.BaseStream.Position;
EthernetHeader ethernetHeader = EthernetHeader.read(binaryReader);
// Skip non-IP packets
if (ethernetHeader.proto != 8)
{
binaryReader.BaseStream.Position += len - (binaryReader.BaseStream.Position - packetStartPos);
return(1);
}
IpHeader ipHeader = IpHeader.read(binaryReader);
// Skip non-UDP packets
if (ipHeader.proto != 17)
{
binaryReader.BaseStream.Position += len - (binaryReader.BaseStream.Position - packetStartPos);
return(1);
}
UdpHeader udpHeader = UdpHeader.read(binaryReader);
bool isSend = (udpHeader.dPort >= 9000 && udpHeader.dPort <= 9013);
bool isRecv = (udpHeader.sPort >= 9000 && udpHeader.sPort <= 9013);
// Skip non-AC-port packets
if (!isSend && !isRecv)
{
binaryReader.BaseStream.Position += len - (binaryReader.BaseStream.Position - packetStartPos);
return(1);
}
long headersSize = binaryReader.BaseStream.Position - packetStartPos;
// Begin reading non-header packet content
StringBuilder packetHeadersStr = new StringBuilder();
StringBuilder packetTypeStr = new StringBuilder();
PacketRecord packet = new PacketRecord();
packet.index = records.Count;
packet.isSend = isSend;
packet.tsSec = tsSec;
packet.netPacket = new NetPacket();
packet.data = binaryReader.ReadBytes((int)(len - headersSize));
packet.extraInfo = "";
BinaryReader packetReader = new BinaryReader(new MemoryStream(packet.data));
try {
ProtoHeader pHeader = ProtoHeader.read(packetReader);
readOptionalHeaders(packet, pHeader.header_, packetHeadersStr, packetReader);
if (packetReader.BaseStream.Position == packetReader.BaseStream.Length)
{
packetTypeStr.Append("<Header Only>");
}
uint HAS_FRAGS_MASK = 0x4; // See SharedNet::SplitPacketData
if ((pHeader.header_ & HAS_FRAGS_MASK) != 0)
{
bool first = true;
while (packetReader.BaseStream.Position != packetReader.BaseStream.Length)
{
if (!first)
{
packetTypeStr.Append(" + ");
}
readPacket(packet, packetTypeStr, packetReader);
first = false;
}
}
if (packetReader.BaseStream.Position != packetReader.BaseStream.Length)
{
packet.extraInfo = "Didnt read entire packet! " + packet.extraInfo;
}
} catch (OutOfMemoryException e) {
//MessageBox.Show("Out of memory (packet " + curPacket + "), stopping read: " + e);
return(2);
} catch (Exception e) {
packet.extraInfo += "EXCEPTION: " + e.Message + " " + e.StackTrace;
}
packet.packetHeadersStr = packetHeadersStr.ToString();
packet.packetTypeStr = packetTypeStr.ToString();
records.Add(packet);
if (!dontList)
{
ListViewItem newItem = new ListViewItem(packet.index.ToString());
newItem.SubItems.Add(packet.isSend ? "Send" : "Recv");
newItem.SubItems.Add(packet.tsSec.ToString());
newItem.SubItems.Add(packet.packetHeadersStr);
newItem.SubItems.Add(packet.packetTypeStr);
newItem.SubItems.Add(packet.data.Length.ToString());
newItem.SubItems.Add(packet.extraInfo);
listItems.Add(newItem);
}
return(0);
}