public NetworkReachability(IPAddress localAddress, IPAddress remoteAddress)
{
if (localAddress == null && remoteAddress == null)
{
throw new ArgumentException("At least one address is required");
}
if (localAddress == null)
{
var remote = new sockaddr_in(remoteAddress);
handle = SCNetworkReachabilityCreateWithAddressPair(IntPtr.Zero, IntPtr.Zero, ref remote);
}
else if (remoteAddress == null)
{
var local = new sockaddr_in(localAddress);
handle = SCNetworkReachabilityCreateWithAddressPair(IntPtr.Zero, ref local, IntPtr.Zero);
}
else
{
var local = new sockaddr_in(localAddress);
var remote = new sockaddr_in(remoteAddress);
handle = SCNetworkReachabilityCreateWithAddressPair(IntPtr.Zero, ref local, ref remote);
}
if (handle == IntPtr.Zero)
{
throw SystemConfigurationException.FromMostRecentCall();
}
}
public NetworkReachability(string address)
{
if (address == null)
{
throw new ArgumentNullException("address");
}
handle = SCNetworkReachabilityCreateWithName(IntPtr.Zero, address);
if (handle == IntPtr.Zero)
{
throw SystemConfigurationException.FromMostRecentCall();
}
}
public NetworkReachability(IPAddress ip)
{
if (ip == null)
{
throw new ArgumentNullException("ip");
}
var s = new sockaddr_in(ip);
handle = SCNetworkReachabilityCreateWithAddress(IntPtr.Zero, ref s);
if (handle == IntPtr.Zero)
{
throw SystemConfigurationException.FromMostRecentCall();
}
}