C#에서 TCP 포트 가용성을 확인하는 방법은 무엇입니까?

int port = 456; // Replace with your target port
bool isAvailable = true;

// Acquire system TCP connection details
IPGlobalProperties ipGlobalProperties = IPGlobalProperties.GetIPGlobalProperties();
TcpConnectionInformation[] tcpConnInfoArray = ipGlobalProperties.GetActiveTcpConnections();

// Inspect connections for port occupancy
foreach (TcpConnectionInformation tcpi in tcpConnInfoArray)
{
  if (tcpi.LocalEndPoint.Port == port)
  {
    isAvailable = false;
    break;
  }
}

// Proceed with your connection logic only if the port is available
if (isAvailable)
{
  // Perform necessary actions
}