internal static List <ITcpConnectionInfo> GetTcp6Table()
{
int tableSize = 0;
var result = GetTcp6Table2(IntPtr.Zero, ref tableSize, false);
IntPtr tcpTableRecordsPtr = IntPtr.Zero;
List <ITcpConnectionInfo> fTable = new List <ITcpConnectionInfo>();
try
{
tcpTableRecordsPtr = Marshal.AllocHGlobal(tableSize);
result = GetTcp6Table2(tcpTableRecordsPtr, ref tableSize, false);
if (result != 0)
{
return(fTable);
}
var table = (MIB_TCP6TABLE2)Marshal.PtrToStructure(tcpTableRecordsPtr, typeof(MIB_TCP6TABLE2));
IntPtr tableRowPtr = (IntPtr)((long)tcpTableRecordsPtr + Marshal.SizeOf(table.dwNumEntries));
for (int i = 0; i < table.dwNumEntries; ++i)
{
MIB_TCP6ROW2 tcpRow = (MIB_TCP6ROW2)Marshal.PtrToStructure(tableRowPtr, typeof(MIB_TCP6ROW2));
fTable.Add(new Tcp6ConnectionInfo(tcpRow));
tableRowPtr = (IntPtr)((long)tableRowPtr + Marshal.SizeOf(tcpRow));
}
return(fTable);
}
catch (OutOfMemoryException me)
{
LoggerProxy.Default.Error(me);
}
catch (Exception e)
{
LoggerProxy.Default.Error(e);
}
finally
{
Marshal.FreeHGlobal(tcpTableRecordsPtr);
}
return(fTable);
}
public Tcp6ConnectionInfo(MIB_TCP6ROW2 tcpRow)
{
// We mask the ports in this struct because according to the documentation, the upper
// bits can be populated arbitrarily, aka undefined state.
LocalPort = (ushort)(tcpRow.dwLocalPort & 0xFFFF);
RemotePort = (ushort)(tcpRow.dwRemotePort & 0xFFFF);
LocalAddress = new IPAddress(tcpRow.LocalAddr.u.Byte);
RemoteAddress = new IPAddress(tcpRow.RemoteAddr.u.Byte);
State = tcpRow.State;
OffloadState = tcpRow.dwOffloadState;
LocalScopeId = tcpRow.dwLocalScopeId;
OwnerPid = tcpRow.dwOwningPid;
}
