public void Set(RecvPacket p)
{
if (_listView.InvokeRequired) {// 別スレッドから呼び出された場合
_listView.BeginInvoke(new MethodInvoker(() => Set(p)));
} else {
var item = _listView.Items.Add(Util.Mac2Str(p.Mac[(int)Sd.Dst]));
item.SubItems.Add(Util.Mac2Str(p.Mac[(int)Sd.Src]));
item.SubItems.Add(p.Type.ToString());
item.SubItems.Add(p.Protocol.ToString());
item.SubItems.Add(Util.Ip2Str(p.Ip[(int)Sd.Src]));
item.SubItems.Add(Util.Ip2Str(p.Ip[(int)Sd.Dst]));
item.SubItems.Add(p.Port[(int)Sd.Src].ToString());
item.SubItems.Add(p.Port[(int)Sd.Dst].ToString());
item.SubItems.Add(p.Len.ToString());
item.SubItems.Add(p.Squence.ToString());
item.SubItems.Add(p.Ack.ToString());
item.SubItems.Add(Util.Flg2Str(p.Flg));
item.Tag = Util.Mac2Str(p.Mac[(int)Sd.Dst]);
//自動スクロール
var rect = _listView.ClientRectangle;//ListViewの高さ取得
var bounds = _listView.Items[0].Bounds;//１行の高さ取得
var row = rect.Height / bounds.Height;//表示されている行数取得
var top = _listView.Items.Count - row;//１行目のItemIndex
if (_listView.TopItem.Index == top) {
//最下行が表示されているので、自動スクロールする
_listView.EnsureVisible(_listView.Items.Count - 1);
}
}
}
public void Set(RecvPacket p)
{
if (_listView.InvokeRequired) // 別スレッドから呼び出された場合
{
_listView.BeginInvoke(new MethodInvoker(() => Set(p)));
}
else
{
var item = _listView.Items.Add(Util.Mac2Str(p.Mac[(int)Sd.Dst]));
item.SubItems.Add(Util.Mac2Str(p.Mac[(int)Sd.Src]));
item.SubItems.Add(p.Type.ToString());
item.SubItems.Add(p.Protocol.ToString());
item.SubItems.Add(Util.Ip2Str(p.Ip[(int)Sd.Src]));
item.SubItems.Add(Util.Ip2Str(p.Ip[(int)Sd.Dst]));
item.SubItems.Add(p.Port[(int)Sd.Src].ToString());
item.SubItems.Add(p.Port[(int)Sd.Dst].ToString());
item.SubItems.Add(p.Len.ToString());
item.SubItems.Add(p.Squence.ToString());
item.SubItems.Add(p.Ack.ToString());
item.SubItems.Add(Util.Flg2Str(p.Flg));
item.Tag = Util.Mac2Str(p.Mac[(int)Sd.Dst]);
//自動スクロール
var rect = _listView.ClientRectangle; //ListViewの高さ取得
var bounds = _listView.Items[0].Bounds; //１行の高さ取得
var row = rect.Height / bounds.Height; //表示されている行数取得
var top = _listView.Items.Count - row; //１行目のItemIndex
if (_listView.TopItem.Index == top)
{
//最下行が表示されているので、自動スクロールする
_listView.EnsureVisible(_listView.Items.Count - 1);
}
}
}
//パケット受信時のイベントハンドラ
void OnRecv(IntPtr pkt_hdr, IntPtr pkt_data)
{
WinPcap.pcap_pkthdr hdr = (WinPcap.pcap_pkthdr)Marshal.PtrToStructure(pkt_hdr, typeof(WinPcap.pcap_pkthdr));
byte[] data = new byte[hdr.caplen];
Marshal.Copy(pkt_data, data, 0, (int)hdr.caplen);
var recvPacket = new RecvPacket(data);
if (OnCapture != null)
{
OnCapture(recvPacket);
}
}
public ArpReplyPacket(Log log, RecvPacket recvPacket, byte [] mac)
{
EtherHeader etherHeader = new EtherHeader();
etherHeader.dstMac = new byte[] { 0, 0, 0, 0, 0, 0 };
etherHeader.srcMac = new byte[] { 0, 0, 0, 0, 0, 0 };
ArpHeader arpHeader = new ArpHeader();
arpHeader.srcIp = new byte[] { 0, 0, 0, 0 };
arpHeader.dstIp = new byte[] { 0, 0, 0, 0 };
arpHeader.srcMac = new byte[] { 0, 0, 0, 0, 0, 0 };
arpHeader.dstMac = new byte[] { 0, 0, 0, 0, 0, 0 };
var arpHeaderLen = Marshal.SizeOf(arpHeader);
var etherHeaderLen = Marshal.SizeOf(etherHeader);
Buf = new byte[etherHeaderLen + arpHeaderLen];
Buffer.BlockCopy(recvPacket.etherHeader.srcMac, 0, etherHeader.dstMac, 0, 6);
Buffer.BlockCopy(mac, 0, etherHeader.srcMac, 0, 6);
etherHeader.type = recvPacket.etherHeader.type;
Buffer.BlockCopy(recvPacket.arpHeader.srcMac, 0, arpHeader.dstMac, 0, 6);
Buffer.BlockCopy(recvPacket.arpHeader.srcIp, 0, arpHeader.dstIp, 0, 4);
Buffer.BlockCopy(mac, 0, arpHeader.srcMac, 0, 6);
Buffer.BlockCopy(recvPacket.arpHeader.dstIp, 0, arpHeader.srcIp, 0, 4);
arpHeader.code = 0x0200;//応答
arpHeader.hwLen = recvPacket.arpHeader.hwLen;
arpHeader.hwType = recvPacket.arpHeader.hwType;
arpHeader.protoLen = recvPacket.arpHeader.protoLen;
arpHeader.type = recvPacket.arpHeader.type;
unsafe
{
fixed(byte *p = Buf)
{
var offSet = 0;
Marshal.StructureToPtr(etherHeader, new IntPtr(p + offSet), true);
offSet += 14;
Marshal.StructureToPtr(arpHeader, new IntPtr(p + offSet), true);
}
}
}
public ArpReplyPacket(Log log,RecvPacket recvPacket,byte [] mac)
{
EtherHeader etherHeader = new EtherHeader();
etherHeader.dstMac = new byte[] { 0, 0, 0, 0, 0, 0 };
etherHeader.srcMac = new byte[] { 0, 0, 0, 0, 0, 0 };
ArpHeader arpHeader = new ArpHeader();
arpHeader.srcIp = new byte[] { 0, 0, 0, 0 };
arpHeader.dstIp = new byte[] { 0, 0, 0, 0 };
arpHeader.srcMac = new byte[] { 0, 0, 0, 0, 0, 0 };
arpHeader.dstMac = new byte[] { 0, 0, 0, 0, 0, 0 };
var arpHeaderLen = Marshal.SizeOf(arpHeader);
var etherHeaderLen = Marshal.SizeOf(etherHeader);
Buf = new byte[etherHeaderLen + arpHeaderLen];
Buffer.BlockCopy(recvPacket.etherHeader.srcMac, 0, etherHeader.dstMac, 0, 6);
Buffer.BlockCopy(mac, 0, etherHeader.srcMac, 0, 6);
etherHeader.type = recvPacket.etherHeader.type;
Buffer.BlockCopy(recvPacket.arpHeader.srcMac, 0, arpHeader.dstMac, 0, 6);
Buffer.BlockCopy(recvPacket.arpHeader.srcIp, 0, arpHeader.dstIp, 0, 4);
Buffer.BlockCopy(mac, 0, arpHeader.srcMac, 0, 6);
Buffer.BlockCopy(recvPacket.arpHeader.dstIp, 0, arpHeader.srcIp, 0, 4);
arpHeader.code = 0x0200;//応答
arpHeader.hwLen = recvPacket.arpHeader.hwLen;
arpHeader.hwType = recvPacket.arpHeader.hwType;
arpHeader.protoLen = recvPacket.arpHeader.protoLen;
arpHeader.type = recvPacket.arpHeader.type;
unsafe {
fixed (byte* p = Buf) {
var offSet=0;
Marshal.StructureToPtr(etherHeader, new IntPtr(p + offSet), true);
offSet += 14;
Marshal.StructureToPtr(arpHeader, new IntPtr(p + offSet), true);
}
}
}
public Session(RecvPacket recvPacket,Log log)
{
lock (this) {
Life = true;
Accept = false;
_recvPacket = recvPacket;
_log = log;
_ident = (short)_rnd.Next(500);//生成
//squenceは生成する
_squence = (uint)_rnd.Next(99999);
//相手のsquence+dataLen+(1)でackを初期化
_ack = recvPacket.Squence + recvPacket.Len;
if (recvPacket.Len == 0)
_ack++;
Log(string.Format("Create ({0})", Util.Flg2Str(recvPacket.Flg)));
Send(0x12, new byte[0]);// SYN/ACK
}
}
public Session(RecvPacket recvPacket, Log log)
{
lock (this) {
Life = true;
Accept = false;
_recvPacket = recvPacket;
_log = log;
_ident = (short)_rnd.Next(500);//生成
//squenceは生成する
_squence = (uint)_rnd.Next(99999);
//相手のsquence+dataLen+(1)でackを初期化
_ack = recvPacket.Squence + recvPacket.Len;
if (recvPacket.Len == 0)
{
_ack++;
}
Log(string.Format("Create ({0})", Util.Flg2Str(recvPacket.Flg)));
Send(0x12, new byte[0]);// SYN/ACK
}
}
public bool Append(RecvPacket recvPacket)
{
if (!Life)
return false;
lock (this) {
Log(string.Format("Recv ({0}) srcPort={1} len={2} {3}", Util.Flg2Str(recvPacket.Flg), recvPacket.Port[(int)Sd.Src],recvPacket.Len, (recvPacket.Len == 0) ? "" : Encoding.ASCII.GetString(recvPacket.Data)));
//関係ないパケットは処理しない
for (int i = 0; i < 2; i++) {
if (Util.Mac2Str(recvPacket.Mac[i]) != Util.Mac2Str(_recvPacket.Mac[i])) {
return false;
}
if (Util.Ip2Str(recvPacket.Ip[i]) != Util.Ip2Str(_recvPacket.Ip[i])) {
return false;
}
if (recvPacket.Port[i] != _recvPacket.Port[i]) {
return false;
}
}
if (Util.FIN(recvPacket.Flg)) {
//Log(string.Format("Recv ({0})", Util.Flg2Str(recvPacket.Flg)));
Send(0x10,new byte[0]);//ACK
Life = false;
} else {
//Log(string.Format("Recv ({0}) len={1} {2}", Util.Flg2Str(recvPacket.Flg), recvPacket.Len, (recvPacket.Len==0)?"":Encoding.ASCII.GetString(recvPacket.Data)));
if (recvPacket.Len != 0) {
if (recvPacket.Len != 0) {
var s = Encoding.ASCII.GetString(recvPacket.Data);
}
//既に受信されているバッファを退避
var tmp = new byte[_buffer.Length];
Buffer.BlockCopy(_buffer, 0, tmp, 0, _buffer.Length);
_buffer = new byte[tmp.Length + recvPacket.Len];//新しいサイズを確保
Buffer.BlockCopy(tmp, 0, _buffer, 0, tmp.Length);//既存のデータを戻す
Buffer.BlockCopy(recvPacket.Data, 0, _buffer, tmp.Length, recvPacket.Len);//新しいデータを追加
}
//相手のackでsquenceを初期化する
_squence = recvPacket.Ack;
//相手のsquence+dataLen+1でackを初期化
_ack = recvPacket.Squence + recvPacket.Len;
if (recvPacket.Len == 0)
_ack++;
}
return true;
}
}
public SendPacket(Log log, RecvPacket recvPacket, short ident, uint squence, uint ack, byte flg, byte [] data)
{
_log = log;
var dataLen = data.Length;
var etherHeaderLen = 14;
var ipHeaderLen = 20;
var tcpHeaderLen = 20;
Buf = new byte[etherHeaderLen + ipHeaderLen + tcpHeaderLen + dataLen];
EtherHeader etherHeader = new EtherHeader();
etherHeader.dstMac = new byte[] { 0, 0, 0, 0, 0, 0 };
etherHeader.srcMac = new byte[] { 0, 0, 0, 0, 0, 0 };
Buffer.BlockCopy(recvPacket.etherHeader.srcMac, 0, etherHeader.dstMac, 0, 6);
Buffer.BlockCopy(recvPacket.etherHeader.dstMac, 0, etherHeader.srcMac, 0, 6);
etherHeader.type = recvPacket.etherHeader.type;
IpHeader ipHeader = new IpHeader();
ipHeader.srcIp = new byte[] { 0, 0, 0, 0 };
ipHeader.dstIp = new byte[] { 0, 0, 0, 0 };
Buffer.BlockCopy(recvPacket.ipHeader.srcIp, 0, ipHeader.dstIp, 0, 4);
Buffer.BlockCopy(recvPacket.ipHeader.dstIp, 0, ipHeader.srcIp, 0, 4);
ipHeader.verLen = recvPacket.ipHeader.verLen;
ipHeader.flags = recvPacket.ipHeader.flags;
ipHeader.ident = ident;
ipHeader.protocol = recvPacket.ipHeader.protocol;
ipHeader.ttl = recvPacket.ipHeader.ttl;
ipHeader.totalLen = Util.htons((ushort)(ipHeaderLen + tcpHeaderLen + dataLen));//IP/TCPヘッダのみ
TcpHeader tcpHeader = new TcpHeader();
tcpHeader.urgent = recvPacket.tcpHeader.urgent;
tcpHeader.window = 0x0020;
tcpHeader.srcPort = recvPacket.tcpHeader.dstPort;
tcpHeader.dstPort = recvPacket.tcpHeader.srcPort;
tcpHeader.ack = Util.htons(ack);
tcpHeader.squence = Util.htons(squence);
tcpHeader.offset = 0x50;// TcpHeaderLen=20 byte
tcpHeader.flg = flg;
//チェックサム計算方法
//http://ja.wikipedia.org/wiki/Transmission_Control_Protocol
//IPチェックサム
var b = new byte[ipHeaderLen];
Buffer.BlockCopy(GetBytes(ipHeader), 0, b, 0, ipHeaderLen);
ipHeader.checkSum = (short)Util.htons(CreateChecksum(b, 0, ipHeaderLen));
//TCPチェックサム
//擬似ヘッダ + TcpHeader + TCPデータ
b = new byte[12 + tcpHeaderLen + dataLen];//擬似ヘッダ+TcpHeader
Buffer.BlockCopy(GetBytes(tcpHeader), 0, b, 12, tcpHeaderLen);
Buffer.BlockCopy(data, 0, b, 32, dataLen);
//擬似ヘッダ編集
Buffer.BlockCopy(recvPacket.ipHeader.srcIp, 0, b, 0, 4);
Buffer.BlockCopy(recvPacket.ipHeader.dstIp, 0, b, 4, 4);
b[9] = 6;//TCP
int size = tcpHeaderLen + dataLen;
b[10] = (byte)((size & 0xFF00) >> 8);
b[11] = (byte)(size & 0x00FF);
tcpHeader.checkSum = (short)Util.htons(CreateChecksum(b, 0, b.Length));
unsafe
{
fixed(byte *p = Buf)
{
var offSet = 0;
Marshal.StructureToPtr(etherHeader, new IntPtr(p + offSet), true);
offSet += 14;
Marshal.StructureToPtr(ipHeader, new IntPtr(p + offSet), true);
offSet += 20;
Marshal.StructureToPtr(tcpHeader, new IntPtr(p + offSet), true);
}
if (dataLen > 0)
{
Buffer.BlockCopy(data, 0, Buf, 54, dataLen);
}
}
}
void capture_OnCapture(RecvPacket recvPacket)
{
lock (this) {
//************************************************************
//ARPパケット処理
//************************************************************
if (_arpReplay) //ARP応答処理
{
if (recvPacket.Type == PType.ARP)
{
if (recvPacket.arpHeader.code == 0x0100) //要求
{
var ip = Util.Ip2Str(recvPacket.arpHeader.dstIp);
foreach (var a in _arpReplyList)
{
if (ip == a)
{
var arpReplyPacket = new ArpReplyPacket(_log, recvPacket, _myMac);
WinPcap.Send(arpReplyPacket.Buf);
_log.Set(string.Format("ARP Replay {0}", Util.Ip2Str(recvPacket.arpHeader.dstIp)));
return;
}
}
}
}
}
//************************************************************
//TCPパケット処理
//************************************************************
//宛先MAC確認(Etherヘッダ)
var mac = Util.Mac2Str(recvPacket.Mac[(int)Sd.Dst]);
if (mac.ToUpper() != Util.Mac2Str(_myMac))
{
if (mac.ToUpper() != Adapter.Mac.ToUpper())
{
return;
}
}
//プロトコル確認(IPヘッダ)
if (recvPacket.ipHeader.protocol != 0x06)
{
return;
}
//ポート番号確認(TCPヘッダ)
if (recvPacket.Port[(int)Sd.Dst] != _port)
{
return;
}
if (recvPacket.Flg == 0x02) //SYNパケット到着
//新しいセッションの開始
{
_ar.Add(new Session(recvPacket, _log));
}
else //それ以外のパケット
//当該セッションに追加
{
for (int i = 0; i < _ar.Count; i++)
{
if (_ar[i].Append(recvPacket))
{
break;
}
}
}
//終了したセッションの清掃
for (int i = _ar.Count - 1; i >= 0; i--)
{
if (!_ar[i].Life)
{
_log.Set(string.Format("ar.RemoteAt(0)", i));
_ar.RemoveAt(i);
}
}
}
}
public bool Append(RecvPacket recvPacket)
{
if (!Life)
{
return(false);
}
lock (this) {
Log(string.Format("Recv ({0}) srcPort={1} len={2} {3}", Util.Flg2Str(recvPacket.Flg), recvPacket.Port[(int)Sd.Src], recvPacket.Len, (recvPacket.Len == 0) ? "" : Encoding.ASCII.GetString(recvPacket.Data)));
//関係ないパケットは処理しない
for (int i = 0; i < 2; i++)
{
if (Util.Mac2Str(recvPacket.Mac[i]) != Util.Mac2Str(_recvPacket.Mac[i]))
{
return(false);
}
if (Util.Ip2Str(recvPacket.Ip[i]) != Util.Ip2Str(_recvPacket.Ip[i]))
{
return(false);
}
if (recvPacket.Port[i] != _recvPacket.Port[i])
{
return(false);
}
}
if (Util.FIN(recvPacket.Flg))
{
//Log(string.Format("Recv ({0})", Util.Flg2Str(recvPacket.Flg)));
Send(0x10, new byte[0]);//ACK
Life = false;
}
else
{
//Log(string.Format("Recv ({0}) len={1} {2}", Util.Flg2Str(recvPacket.Flg), recvPacket.Len, (recvPacket.Len==0)?"":Encoding.ASCII.GetString(recvPacket.Data)));
if (recvPacket.Len != 0)
{
if (recvPacket.Len != 0)
{
var s = Encoding.ASCII.GetString(recvPacket.Data);
}
//既に受信されているバッファを退避
var tmp = new byte[_buffer.Length];
Buffer.BlockCopy(_buffer, 0, tmp, 0, _buffer.Length);
_buffer = new byte[tmp.Length + recvPacket.Len]; //新しいサイズを確保
Buffer.BlockCopy(tmp, 0, _buffer, 0, tmp.Length); //既存のデータを戻す
Buffer.BlockCopy(recvPacket.Data, 0, _buffer, tmp.Length, recvPacket.Len); //新しいデータを追加
}
//相手のackでsquenceを初期化する
_squence = recvPacket.Ack;
//相手のsquence+dataLen+1でackを初期化
_ack = recvPacket.Squence + recvPacket.Len;
if (recvPacket.Len == 0)
{
_ack++;
}
}
return(true);
}
}
void capture_OnCapture(RecvPacket recvPacket)
{
lock (this) {
//************************************************************
//ARPパケット処理
//************************************************************
if (_arpReplay) {//ARP応答処理
if (recvPacket.Type == PType.ARP) {
if (recvPacket.arpHeader.code == 0x0100) {//要求
var ip = Util.Ip2Str(recvPacket.arpHeader.dstIp);
foreach (var a in _arpReplyList) {
if (ip == a) {
var arpReplyPacket = new ArpReplyPacket(_log, recvPacket, _myMac);
WinPcap.Send(arpReplyPacket.Buf);
_log.Set(string.Format("ARP Replay {0}", Util.Ip2Str(recvPacket.arpHeader.dstIp)));
return;
}
}
}
}
}
//************************************************************
//TCPパケット処理
//************************************************************
//宛先MAC確認(Etherヘッダ)
var mac = Util.Mac2Str(recvPacket.Mac[(int)Sd.Dst]);
if (mac.ToUpper() != Util.Mac2Str(_myMac)) {
if (mac.ToUpper() != Adapter.Mac.ToUpper()) {
return;
}
}
//プロトコル確認(IPヘッダ)
if (recvPacket.ipHeader.protocol != 0x06) {
return;
}
//ポート番号確認(TCPヘッダ)
if (recvPacket.Port[(int)Sd.Dst] != _port)
return;
if (recvPacket.Flg == 0x02) {//SYNパケット到着
//新しいセッションの開始
_ar.Add(new Session(recvPacket, _log));
} else {//それ以外のパケット
//当該セッションに追加
for (int i = 0; i < _ar.Count; i++) {
if (_ar[i].Append(recvPacket)) {
break;
}
}
}
//終了したセッションの清掃
for (int i = _ar.Count - 1; i >= 0; i--) {
if (!_ar[i].Life) {
_log.Set(string.Format("ar.RemoteAt(0)", i));
_ar.RemoveAt(i);
}
}
}
}
public SendPacket(Log log,RecvPacket recvPacket,short ident,uint squence,uint ack,byte flg,byte [] data)
{
_log = log;
var dataLen = data.Length;
var etherHeaderLen = 14;
var ipHeaderLen = 20;
var tcpHeaderLen = 20;
Buf = new byte[etherHeaderLen + ipHeaderLen + tcpHeaderLen + dataLen];
EtherHeader etherHeader = new EtherHeader();
etherHeader.dstMac = new byte[] { 0, 0, 0, 0, 0, 0 };
etherHeader.srcMac = new byte[] { 0, 0, 0, 0, 0, 0 };
Buffer.BlockCopy(recvPacket.etherHeader.srcMac,0,etherHeader.dstMac,0,6);
Buffer.BlockCopy(recvPacket.etherHeader.dstMac,0,etherHeader.srcMac,0,6);
etherHeader.type = recvPacket.etherHeader.type;
IpHeader ipHeader = new IpHeader();
ipHeader.srcIp = new byte[] { 0, 0, 0, 0 };
ipHeader.dstIp = new byte[] { 0, 0, 0, 0 };
Buffer.BlockCopy(recvPacket.ipHeader.srcIp, 0, ipHeader.dstIp, 0, 4);
Buffer.BlockCopy(recvPacket.ipHeader.dstIp, 0, ipHeader.srcIp, 0, 4);
ipHeader.verLen = recvPacket.ipHeader.verLen;
ipHeader.flags = recvPacket.ipHeader.flags;
ipHeader.ident = ident;
ipHeader.protocol = recvPacket.ipHeader.protocol;
ipHeader.ttl = recvPacket.ipHeader.ttl;
ipHeader.totalLen = Util.htons((ushort)(ipHeaderLen + tcpHeaderLen + dataLen));//IP/TCPヘッダのみ
TcpHeader tcpHeader = new TcpHeader();
tcpHeader.urgent = recvPacket.tcpHeader.urgent;
tcpHeader.window = 0x0020;
tcpHeader.srcPort = recvPacket.tcpHeader.dstPort;
tcpHeader.dstPort = recvPacket.tcpHeader.srcPort;
tcpHeader.ack = Util.htons(ack);
tcpHeader.squence = Util.htons(squence);
tcpHeader.offset = 0x50;// TcpHeaderLen=20 byte
tcpHeader.flg = flg;
//チェックサム計算方法
//http://ja.wikipedia.org/wiki/Transmission_Control_Protocol
//IPチェックサム
var b = new byte[ipHeaderLen];
Buffer.BlockCopy(GetBytes(ipHeader), 0, b, 0, ipHeaderLen);
ipHeader.checkSum = (short)Util.htons(CreateChecksum(b, 0, ipHeaderLen));
//TCPチェックサム
//擬似ヘッダ + TcpHeader + TCPデータ
b = new byte[12 + tcpHeaderLen + dataLen];//擬似ヘッダ+TcpHeader
Buffer.BlockCopy(GetBytes(tcpHeader), 0, b, 12, tcpHeaderLen);
Buffer.BlockCopy(data, 0, b, 32, dataLen);
//擬似ヘッダ編集
Buffer.BlockCopy(recvPacket.ipHeader.srcIp, 0, b, 0, 4);
Buffer.BlockCopy(recvPacket.ipHeader.dstIp, 0, b, 4, 4);
b[9]=6;//TCP
int size = tcpHeaderLen + dataLen;
b[10] = (byte)((size & 0xFF00) >> 8);
b[11] = (byte)(size & 0x00FF);
tcpHeader.checkSum = (short)Util.htons(CreateChecksum(b, 0, b.Length));
unsafe {
fixed (byte* p = Buf) {
var offSet=0;
Marshal.StructureToPtr(etherHeader, new IntPtr(p + offSet), true);
offSet += 14;
Marshal.StructureToPtr(ipHeader, new IntPtr(p + offSet), true);
offSet += 20;
Marshal.StructureToPtr(tcpHeader, new IntPtr(p + offSet), true);
}
if(dataLen>0)
Buffer.BlockCopy(data, 0,Buf, 54, dataLen);
}
}
void _capture_OnCapture(RecvPacket p)
{
_captureView.Set(p);
}
void _capture_OnCapture(RecvPacket p)
{
_captureView.Set(p);
}