/// <summary>
/// Load TCP Stream from WireShark TCPStreamFormat
/// </summary>
/// <param name="file">File</param>
public static TcpStream FromFile(string file)
{
TcpStream tcp = null;
if (!string.IsNullOrEmpty(file))
{
string[] sp = File.ReadAllLines(file);
IPEndPoint empty = new IPEndPoint(IPAddress.None, IPEndPoint.MinPort);
foreach (string line in sp)
{
string l = line.TrimStart().Replace(":", "");
ETcpEmisor em = line.StartsWith("\t") ? ETcpEmisor.Server : ETcpEmisor.Client;
if (tcp == null)
{
tcp = new TcpStream(null, em, PhysicalAddress.None, PhysicalAddress.None, empty, empty, null, DateTime.Now);
}
if (l.Length >= 9 && !l.Substring(0, 8).Contains(" "))
{
// remove offset
l = l.Substring(8, l.Length - 8).Trim();
}
if (l.Length > 48)
{
l = l.Substring(0, 48);
}
l = l.Replace(" ", "");
byte[] data = HexHelper.FromHexString(l);
if (tcp._Last == null)
{
tcp._Last = new TcpStreamMessage(DateTime.Now, data, em, null);
tcp._InternalList.Add(tcp._Last);
}
else
{
// Check if its the same
if (tcp._Last.Emisor == em)
{
tcp._Last.AddData(data, 0, data.Length);
}
else
{
// New Packet
tcp._Last = new TcpStreamMessage(DateTime.Now, data, em, tcp._Last);
tcp._InternalList.Add(tcp._Last);
}
}
}
}
return(tcp);
}
bool IsTimeouted(TcpStream v, DateTime date)
{
TcpStreamMessage st = v.LastStream;
if (st == null)
{
return(date < v.StartDate.Add(TimeoutSync));
}
return(date < st.Date.Add(Timeout));
}
public bool GetStream(ResumePacket packet, EStartTcpStreamMethod startTcpStreamMethod, out TcpStream stream)
{
ETcpEmisor em;
if (!TryGetValue(packet.IpSource, packet.IpDest, out stream, out em))
{
bool syn = packet.Tcp.Syn;
bool ack = packet.Tcp.Ack;
// No data or no Sync
switch (startTcpStreamMethod)
{
case EStartTcpStreamMethod.Sync:
{
if (!syn || ack)
{
stream = null;
return(false);
}
break;
}
case EStartTcpStreamMethod.SyncAck:
{
if (!syn || !ack)
{
stream = null;
return(false);
}
break;
}
}
lock (_TcpStreams)
{
stream = new TcpStream(this, syn && ack ? ETcpEmisor.Server : ETcpEmisor.Client, packet.HwSource, packet.HwDest, packet.IpSource, packet.IpDest, packet.Tcp, packet.Date);
_TcpStreams.Add(stream.Key, stream);
}
return(true);
}
if (!stream.IsClossed)
{
stream.Add(packet.Date, em, packet.Tcp);
}
return(false);
}
public bool GetStream(PhysicalAddress hwSource, PhysicalAddress hwDest, IPEndPoint ipSource, IPEndPoint ipDest, TcpPacket tcp, DateTime date, EStartTcpStreamMethod startTcpStreamMethod, out TcpStream stream)
{
ETcpEmisor em;
if (!TryGetValue(ipSource, ipDest, out stream, out em))
{
bool syn = tcp.Syn;
bool ack = tcp.Ack;
// No data or no Sync
switch (startTcpStreamMethod)
{
case EStartTcpStreamMethod.Sync:
{
if (!syn || ack)
{
stream = null;
return(false);
}
break;
}
case EStartTcpStreamMethod.SyncAck:
{
if (!syn || !ack)
{
stream = null;
return(false);
}
break;
}
}
lock (_TcpStreams)
{
stream = new TcpStream(this, syn && ack ? ETcpEmisor.Server : ETcpEmisor.Client, hwSource, hwDest, ipSource, ipDest, tcp, date);
_TcpStreams.Add(stream.Key, stream);
}
return(true);
}
if (!stream.IsClossed)
{
stream.Add(date, em, tcp);
}
return(false);
}
public bool TryGetValue(IPEndPoint source, IPEndPoint dest, out TcpStream ret, out ETcpEmisor em)
{
em = dest.Port < 49152 ? ETcpEmisor.Client : ETcpEmisor.Server;
if (!_TcpStreams.TryGetValue(GetKey(source, dest, em == ETcpEmisor.Server), out ret))
{
em = em == ETcpEmisor.Client ? ETcpEmisor.Server : ETcpEmisor.Client;
if (!_TcpStreams.TryGetValue(GetKey(source, dest, em == ETcpEmisor.Server), out ret))
{
em = ETcpEmisor.Client;
return(false);
}
}
return(true);
}
