private static void OnRecvCompleted(SocketAsyncEventArgs e)
{
if (RawSocket.RecvCompleted != null)
{
RawSocket.RecvCompleted(null, e);
}
}
public SYNScanner(int nMaxTask, ProbeConfiger probes, EndPoint bindEndPoint)
{
if (nMaxTask > 60000 || nMaxTask < 1)
{
throw new ArgumentOutOfRangeException("the MaxTask must be between 1 and 30000");
}
m_probes = probes;
if (bindEndPoint == null)
{
foreach (var v in Dns.GetHostAddresses(Dns.GetHostName()))
{
if (v.IsIPv6LinkLocal || v.IsIPv6Multicast || v.IsIPv6SiteLocal)
{
continue;
}
bindEndPoint = new IPEndPoint(v, 0);
}
}
m_rnd = new Random();
m_dic_uid = new Dictionary <uint, SYNScanTaskInfo>();// new Dictionary<uint, uint>();
m_dic_task_running = new Dictionary <uint, SYNScanTaskInfo>();
m_tcp_scanner = new TCPScanner(nMaxTask, probes);
m_tcp_scanner.Completed += new ScanEventHandler(m_tcp_Completed);
//m_sock_bind = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
//m_sock_bind.Bind(bindEndPoint);
//bindEndPoint = m_sock_bind.LocalEndPoint;
m_strLocalIP = bindEndPoint.ToString().Split(':')[0];
m_uLocalIP = RAWDefine.IPToINT(m_strLocalIP);
m_nLocalPort = ushort.Parse(bindEndPoint.ToString().Split(':')[1]);
m_se = new Semaphore(nMaxTask, nMaxTask);
//m_sock_raw = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP);
//m_sock_raw.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.HeaderIncluded, true);
//m_sock_raw.Bind(bindEndPoint);
//m_sock_raw.IOControl(IOControlCode.ReceiveAll, new byte[] { 1, 0, 0, 0 }, null);
RawSocket.InitRawSocket(bindEndPoint);
RawSocket.RecvCompleted += this.ProcessRecv;
m_que_task = new Queue <SYNScanTaskInfo>();
m_que_sae = new Queue <SocketAsyncEventArgs>();
for (int i = 0; i < nMaxTask; i++)
{
SYNScanTaskInfo ti = new SYNScanTaskInfo();
ti.TaskID = (uint)((i + 1) << 8);
ti.SYNPacket = new byte[40];
m_que_task.Enqueue(ti);
}
//SocketAsyncEventArgs sae = new SocketAsyncEventArgs();
//sae.Completed += new EventHandler<SocketAsyncEventArgs>(IO_Completed);
//sae.SetBuffer(new byte[65535], 0, 65535);
//sae.UserToken = m_sock_raw;
//if (!m_sock_raw.ReceiveAsync(sae)) IOProcessPool.QueueWork(this.ProcessRecv, sae);
m_thread_timeout = new Thread(this.CheckTimeout);
m_thread_timeout.IsBackground = true;
m_thread_timeout.Start();
}
private static void IO_Completed(object sender, SocketAsyncEventArgs e)
{
switch (e.LastOperation)
{
case SocketAsyncOperation.SendTo:
RawSocket.ProcessSend(e);
break;
case SocketAsyncOperation.ReceiveFrom:
RawSocket.ProcessRecv(e);
break;
}
}
private static void ProcessRecv(SocketAsyncEventArgs e)
{
Socket sock = e.UserToken as Socket;
if (e.SocketError == SocketError.Success && e.BytesTransferred > 0)
{
RawSocket.OnRecvCompleted(e);
}
try {
if (!m_sock_raw.ReceiveFromAsync(e))
{
IOProcessPool.QueueWork(RawSocket.ProcessRecv, e);
}
} catch { }
}
private void CheckTimeout()
{
DateTime dt = DateTime.Now;
List <SYNScanTaskInfo> lst_remove = new List <SYNScanTaskInfo>();
while (true)
{
Thread.Sleep(1000);
lst_remove.Clear();
dt = DateTime.Now;
bool bDisposed = base._IsDisposed;
lock (m_dic_task_running) {
foreach (var v in m_dic_task_running)
{
if (!v.Value.IsStarted)
{
continue;
}
if (dt.Subtract(v.Value.StartTime).TotalMilliseconds > v.Value.TotalTimeout || bDisposed)
{
lst_remove.Add(v.Value);
continue;
}
if (dt.Subtract(v.Value.LastTime).TotalMilliseconds > v.Value.Timeout)
{
if (v.Value.RunedRetry++ < v.Value.Retry)
{
RawSocket.SendData(v.Value.SYNPacket, 0, v.Value.SYNPacket.Length);// this.SendData(v.Value);
v.Value.LastTime = DateTime.Now;
}
else
{
lst_remove.Add(v.Value);
}
}
}
foreach (var v in lst_remove)
{
this.EndTask(v);
}
}
if (bDisposed)
{
break;
}
}
}
public static void SendData(byte[] byData, int nIndex, int nLen)
{
SocketAsyncEventArgs sae = RawSocket.PopSAE();
if (sae.Buffer == null || sae.Buffer.Length < nLen)
{
sae.SetBuffer(byData, nIndex, nLen);
}
else
{
Array.Copy(byData, nIndex, sae.Buffer, 0, nLen);
}
//sae.remo
if (!m_sock_raw.SendToAsync(sae))
{
IOProcessPool.QueueWork(RawSocket.ProcessRecv, sae);
}
}
//private SocketAsyncEventArgs PopSAE() {
// lock (m_obj_sync) {
// if (m_que_sae.Count != 0) return m_que_sae.Dequeue();
// }
// SocketAsyncEventArgs sae = new SocketAsyncEventArgs();
// sae.Completed += new EventHandler<SocketAsyncEventArgs>(IO_Completed);
// sae.SetBuffer(new byte[40], 0, 40);
// return sae;
//}
//private void PushSAE(SocketAsyncEventArgs sae) {
// lock (m_obj_sync) {
// if (base._IsDisposed) return;
// m_que_sae.Enqueue(sae);
// }
//}
protected override uint OnScan(int nPort, EndPoint endPoint, int nProbes, int nTimeout, int nRetry, int nTotalTimeout, bool bUseNullProbe)
{
lock (m_obj_sync) {
if (base._IsDisposed)
{
throw new ObjectDisposedException("SYNScanner", "The scanner was disposed");
}
}
m_se.WaitOne();
SYNScanTaskInfo ti = this.CreateTaskInfo(nPort, endPoint, nProbes, nTimeout, nRetry, nTotalTimeout, bUseNullProbe);
lock (m_dic_task_running) {
m_dic_task_running.Add(ti.TaskID, ti);
}
//this.SendData(ti);
RawSocket.SendData(ti.SYNPacket, 0, ti.SYNPacket.Length);
ti.StartTime = ti.LastTime = DateTime.Now;
ti.IsStarted = true;
return(ti.TaskID);
}
private static void ProcessSend(SocketAsyncEventArgs e)
{
RawSocket.PushSAE(e);
}