private unsafe TcpConnectionInformation[] GetTcpConnections(bool listeners)
{
int realCount = Interop.Sys.GetEstimatedTcpConnectionCount();
int infoCount = realCount * 2;
Interop.Sys.NativeTcpConnectionInformation *infos = stackalloc Interop.Sys.NativeTcpConnectionInformation[infoCount];
if (Interop.Sys.GetActiveTcpConnectionInfos(infos, &infoCount) == -1)
{
throw new NetworkInformationException(SR.net_PInvokeError);
}
TcpConnectionInformation[] connectionInformations = new TcpConnectionInformation[infoCount];
int nextResultIndex = 0;
for (int i = 0; i < infoCount; i++)
{
Interop.Sys.NativeTcpConnectionInformation nativeInfo = infos[i];
TcpState state = nativeInfo.State;
if (listeners != (state == TcpState.Listen))
{
continue;
}
byte[] localBytes = new byte[nativeInfo.LocalEndPoint.NumAddressBytes];
fixed(byte *localBytesPtr = localBytes)
{
Buffer.MemoryCopy(nativeInfo.LocalEndPoint.AddressBytes, localBytesPtr, localBytes.Length, localBytes.Length);
}
IPAddress localIPAddress = new IPAddress(localBytes);
IPEndPoint local = new IPEndPoint(localIPAddress, (int)nativeInfo.LocalEndPoint.Port);
IPAddress remoteIPAddress;
if (nativeInfo.RemoteEndPoint.NumAddressBytes == 0)
{
remoteIPAddress = IPAddress.Any;
}
else
{
byte[] remoteBytes = new byte[nativeInfo.RemoteEndPoint.NumAddressBytes];
fixed(byte *remoteBytesPtr = &remoteBytes[0])
{
Buffer.MemoryCopy(nativeInfo.RemoteEndPoint.AddressBytes, remoteBytesPtr, remoteBytes.Length, remoteBytes.Length);
}
remoteIPAddress = new IPAddress(remoteBytes);
}
IPEndPoint remote = new IPEndPoint(remoteIPAddress, (int)nativeInfo.RemoteEndPoint.Port);
connectionInformations[nextResultIndex++] = new SimpleTcpConnectionInformation(local, remote, state);
}
if (nextResultIndex != connectionInformations.Length)
{
Array.Resize(ref connectionInformations, nextResultIndex);
}
return(connectionInformations);
}
public unsafe override TcpConnectionInformation[] GetActiveTcpConnections()
{
int realCount = Interop.Sys.GetEstimatedTcpConnectionCount();
int infoCount = (int)(realCount * 1.5f);
Interop.Sys.NativeTcpConnectionInformation *infos = stackalloc Interop.Sys.NativeTcpConnectionInformation[infoCount];
while (Interop.Sys.GetActiveTcpConnectionInfos(infos, &infoCount) == -1)
{
var newAlloc = stackalloc Interop.Sys.NativeTcpConnectionInformation[infoCount];
infos = newAlloc;
}
TcpConnectionInformation[] connectionInformations = new TcpConnectionInformation[infoCount];
for (int i = 0; i < infoCount; i++)
{
Interop.Sys.NativeTcpConnectionInformation nativeInfo = infos[i];
TcpState state = nativeInfo.State;
byte[] localBytes = new byte[nativeInfo.LocalEndPoint.NumAddressBytes];
fixed(byte *localBytesPtr = localBytes)
{
Buffer.MemoryCopy(nativeInfo.LocalEndPoint.AddressBytes, localBytesPtr, localBytes.Length, localBytes.Length);
}
IPAddress localIPAddress = new IPAddress(localBytes);
IPEndPoint local = new IPEndPoint(localIPAddress, (int)nativeInfo.LocalEndPoint.Port);
IPAddress remoteIPAddress;
if (nativeInfo.RemoteEndPoint.NumAddressBytes == 0)
{
remoteIPAddress = IPAddress.Any;
}
else
{
byte[] remoteBytes = new byte[nativeInfo.RemoteEndPoint.NumAddressBytes];
fixed(byte *remoteBytesPtr = remoteBytes)
{
Buffer.MemoryCopy(nativeInfo.RemoteEndPoint.AddressBytes, remoteBytesPtr, remoteBytes.Length, remoteBytes.Length);
}
remoteIPAddress = new IPAddress(remoteBytes);
}
IPEndPoint remote = new IPEndPoint(remoteIPAddress, (int)nativeInfo.RemoteEndPoint.Port);
connectionInformations[i] = new SimpleTcpConnectionInformation(local, remote, state);
}
return(connectionInformations);
}
