/// <summary>
/// Get the local ip address of the local machine
/// </summary>
/// <param name="dns">Dns lookup</param>
/// <param name="addressFamily">Desired address family</param>
/// <returns>Local ip address or null if unable to determine. If no address family match, falls back to an ipv6 attempt.</returns>
public static async Task <System.Net.IPAddress> GetLocalIPAddress(this IDnsLookup dns, System.Net.Sockets.AddressFamily addressFamily = System.Net.Sockets.AddressFamily.InterNetwork)
{
try
{
// append ipv4 first, then the ipv6 then the remote ip
System.Net.IPAddress[] ips = await dns.GetHostAddressesAsync(dns.GetHostName());
foreach (System.Net.IPAddress ip in ips)
{
if (ip.AddressFamily == addressFamily)
{
return(ip);
}
}
foreach (System.Net.IPAddress ip in ips)
{
if (ip.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6)
{
return(ip);
}
}
}
catch
{
}
return(null);
}
/// <summary>
/// Get the local ip addresses of the local machine
/// </summary>
/// <param name="dns">Dns lookup</param>
/// <param name="addressFamily">Desired address family or null for all</param>
/// <returns>Local ip address or empty array if unable to determine. If no address family match, falls back to an ipv6 attempt.</returns>
public static async Task <System.Net.IPAddress[]> GetLocalIPAddressesAsync(this IDnsLookup dns, System.Net.Sockets.AddressFamily?addressFamily = System.Net.Sockets.AddressFamily.InterNetwork)
{
try
{
// append ipv4 first, then the ipv6 then the remote ip
return((await dns.GetHostAddressesAsync(dns.GetHostName())).Union(localHostIP).Where(i => addressFamily is null || i.AddressFamily == addressFamily).ToArray());
}
catch
{
}
return(new System.Net.IPAddress[0]);
}
/// <summary>
/// Get the ip addresses of the local machine
/// </summary>
/// <param name="dns">Dns lookup</param>
/// <param name="allowLocal">Whether to return localhost ip</param>
/// <param name="addressFamily">Desired address family or null for all</param>
/// <returns>Local ip address or empty array if unable to determine. If no address family match, falls back to an ipv6 attempt.</returns>
public static async Task <System.Net.IPAddress[]> GetLocalIPAddressesAsync(this IDnsLookup dns, bool allowLocal = true, System.Net.Sockets.AddressFamily?addressFamily = System.Net.Sockets.AddressFamily.InterNetwork)
{
try
{
// append ipv4 first, then the ipv6 then the remote ip
List <IPAddress> ips = new List <IPAddress>();
ips.AddRange(await dns.GetHostAddressesAsync(dns.GetHostName()));
if (allowLocal)
{
ips.AddRange(localHostIP);
}
return(ips.Where(ip => (allowLocal || ip.IsLocalHost()) ||
(addressFamily is null || ip.AddressFamily == addressFamily)).ToArray());
}
catch
{
}
return(new System.Net.IPAddress[0]);
}