/// <summary>
/// Retrieves the current table of tcp connections.
/// </summary>
/// <returns>
/// An array of tcp connection entries representing the
/// tcp table.
/// </returns>
public static TcpConnection[] GetCurrentTcpConnections()
{
const int NO_ERROR = 0;
// start with a buffer size of 20000 bytes
int size = 20000;
byte[] buffer = new byte[size];
// call the function once to get the buffer size
if (GetTcpTable (buffer, out size, true) != NO_ERROR)
{
return null;
}
// allocate the correct number of bytes for the buffer
buffer = new byte[size];
// call it again with the correct buffer size
if (GetTcpTable (buffer, out size, true) != NO_ERROR)
{
return null;
}
// copy out the number of rows
int rows = BitConverter.ToInt32 (buffer, 0);
// allocate enough space in the table
TcpConnection[] connection = new TcpConnection [rows];
#region Read Table
// loop through each row
for (int i = 0; i < rows; i++)
{
connection[i] = new TcpConnection();
// copy out the state
connection[i].State = (TcpState)BitConverter.ToInt32 (buffer, (i * 20) + 4);
// copy out the local address
IPAddress localAddress = IPAddress.Parse (buffer[(i * 20) + 8].ToString() + "." +
buffer[(i * 20) + 9].ToString() + "." +
buffer[(i * 20) + 10].ToString() + "." +
buffer[(i * 20) + 11].ToString());
// copy out the local port
int localPort = (((int) buffer[(i * 20) + 12]) <<8) +
(((int) buffer[(i * 20) + 13])) +
(((int) buffer[(i * 20) + 14]) <<24) +
(((int) buffer[(i * 20) + 15]) <<16);
// store the local end point in the array
connection[i].LocalEndPoint = new IPEndPoint (localAddress, localPort);
// copy out the remote address
IPAddress remoteAddress = IPAddress.Parse (buffer[(i * 20) + 16].ToString() + "." +
buffer[(i * 20) + 17].ToString() + "." +
buffer[(i * 20) + 18].ToString() + "." +
buffer[(i * 20) + 19].ToString());
// copy out the remote port
int remotePort = (((int) buffer[(i * 20) + 20]) <<8) +
(((int) buffer[(i * 20) + 21])) +
(((int) buffer[(i * 20) + 22]) <<24) +
(((int) buffer[(i * 20) + 23]) <<16);
// store the remote end point in the array
connection[i].RemoteEndPoint = new IPEndPoint (remoteAddress, remotePort);
}
#endregion
return connection;
}
/// <summary>
/// Retrieves the current table of tcp connections.
/// </summary>
/// <returns>
/// An array of tcp connection entries representing the
/// tcp table.
/// </returns>
public static TcpConnection[] GetCurrentTcpConnections()
{
const int NO_ERROR = 0;
// start with a buffer size of 20000 bytes
int size = 20000;
byte[] buffer = new byte[size];
// call the function once to get the buffer size
if (GetTcpTable(buffer, out size, true) != NO_ERROR)
{
return(null);
}
// allocate the correct number of bytes for the buffer
buffer = new byte[size];
// call it again with the correct buffer size
if (GetTcpTable(buffer, out size, true) != NO_ERROR)
{
return(null);
}
// copy out the number of rows
int rows = BitConverter.ToInt32(buffer, 0);
// allocate enough space in the table
TcpConnection[] connection = new TcpConnection [rows];
#region Read Table
// loop through each row
for (int i = 0; i < rows; i++)
{
connection[i] = new TcpConnection();
// copy out the state
connection[i].State = (TcpState)BitConverter.ToInt32(buffer, (i * 20) + 4);
// copy out the local address
IPAddress localAddress = IPAddress.Parse(buffer[(i * 20) + 8].ToString() + "." +
buffer[(i * 20) + 9].ToString() + "." +
buffer[(i * 20) + 10].ToString() + "." +
buffer[(i * 20) + 11].ToString());
// copy out the local port
int localPort = (((int)buffer[(i * 20) + 12]) << 8) +
(((int)buffer[(i * 20) + 13])) +
(((int)buffer[(i * 20) + 14]) << 24) +
(((int)buffer[(i * 20) + 15]) << 16);
// store the local end point in the array
connection[i].LocalEndPoint = new IPEndPoint(localAddress, localPort);
// copy out the remote address
IPAddress remoteAddress = IPAddress.Parse(buffer[(i * 20) + 16].ToString() + "." +
buffer[(i * 20) + 17].ToString() + "." +
buffer[(i * 20) + 18].ToString() + "." +
buffer[(i * 20) + 19].ToString());
// copy out the remote port
int remotePort = (((int)buffer[(i * 20) + 20]) << 8) +
(((int)buffer[(i * 20) + 21])) +
(((int)buffer[(i * 20) + 22]) << 24) +
(((int)buffer[(i * 20) + 23]) << 16);
// store the remote end point in the array
connection[i].RemoteEndPoint = new IPEndPoint(remoteAddress, remotePort);
}
#endregion
return(connection);
}
