public SctpTemplateControl()
{
InitializeComponent();
foreach (KeyValuePair <string, SctpPayloadProtocol> nameAndType in PpidsMap)
{
SctpPayloadProtocol type = nameAndType.Value;
string name = nameAndType.Key;
string label = $"{(int) type} {name}";
ppidBox.Items.Add(label);
}
// Setting default to Ethernet
ppidBox.SelectedIndex = (int)SctpPayloadProtocol.Reserved;
streamTextbox.Text = "1";
}
public TempPacketSaveData GetPacket(byte[] payload, int sctpStreamId, SctpPayloadProtocol proto)
{
PhysicalAddress emptyAddress = PhysicalAddress.Parse("000000000000");
PacketDotNet.EthernetPacket etherPacket = new EthernetPacket(emptyAddress, emptyAddress, EthernetType.IPv4);
bool flip = sctpStreamId < 0;
sctpStreamId = Math.Abs(sctpStreamId);
Random r = new Random(sctpStreamId);
IPAddress sourceIp = new IPAddress(r.Next());
IPAddress destIp = new IPAddress(r.Next());
if (flip)
{
IPAddress tempAddress = sourceIp;
sourceIp = destIp;
destIp = tempAddress;
}
var IPProtocolType_Sctp = 132;
IPv4Packet ipPacket = new IPv4Packet(sourceIp, destIp)
{
Protocol = (ProtocolType)IPProtocolType_Sctp
};
SctpPacket sctpPacket = new SctpPacket(1, 1, 0, 0);
SctpDataChunk dataChunk = new PacketDotNet.Sctp.Chunks.SctpDataChunk(new ByteArraySegment(
new byte[]
{
0x00, 0x03, 0x00, 0x14, 0x79, 0x46, 0x08, 0xb7, 0x00, 0x00, 0x00, 0x17, 0x00, 0x00, 0x00, 0x19, 0x00, 0x00,
0x00, 0x00
}), sctpPacket)
{
PayloadData = payload,
PayloadProtocol = proto
};
dataChunk.Length = (ushort)(16 + payload.Length);
byte[] ipPayload = sctpPacket.Bytes.Concat(dataChunk.Bytes).ToArray();
ipPacket.PayloadData = ipPayload;
etherPacket.PayloadPacket = ipPacket;
return(new TempPacketSaveData(etherPacket.Bytes, LinkLayerType.Ethernet));
}