/// <summary>
/// <para>Will properly convert <paramref name="endpoint"/> to IPEndpoint
/// If <paramref name="endpoint"/> is a DNSEndpoint is an onion host (Tor v2), it will be converted into onioncat address
/// else, a DNS resolution will be made and all resolved addresses will be returned</para>
/// <para>If <paramref name="endpoint"/> is a IPEndpoint, it will be returned as-is.</para>
/// You can pass any endpoint parsed by <see cref="NBitcoin.Utils.ParseEndpoint(string, int)"/>
/// </summary>
/// <param name="endpoint">The endpoint to convert to IPEndpoint</param>
/// <exception cref="System.ArgumentNullException">The endpoint is null</exception>
/// <exception cref="System.Net.Sockets.SocketException">An error is encountered when resolving the dns name.</exception>
/// <exception cref="System.NotSupportedException">The endpoint passed can't be converted into an Ip (eg. An onion host which is not TorV2)</exception>
public static async Task <IPEndPoint[]> ResolveToIPEndpointsAsync(this EndPoint endpoint)
{
if (endpoint == null)
{
throw new ArgumentNullException(nameof(endpoint));
}
if (endpoint is IPEndPoint ip)
{
return(new[] { ip });
}
else if (endpoint.AsOnionCatIPEndpoint() is IPEndPoint ip2)
{
return(new[] { ip2 });
}
else if (endpoint is DnsEndPoint dns)
{
if (dns.IsTor())
{
throw new NotSupportedException($"{endpoint} is not a Tor v2 address, and can't be converted into an IPEndpoint");
}
var ips = await Dns.GetHostAddressesAsync(dns.Host).ConfigureAwait(false);
return(ips.Select(i => new IPEndPoint(i, dns.Port)).ToArray());
}
else
{
throw new NotSupportedException(endpoint.ToString());
}
}
/// <summary>
/// <para>Will properly convert <paramref name="endpoint"/> to IPEndpoint
/// If <paramref name="endpoint"/> is a DNSEndpoint is an onion host, it will be converted into onioncat address
/// else, a DNS resolution will be made and all resolved addresses will be returned</para>
/// <para>If <paramref name="endpoint"/> is a IPEndpoint, it will be returned as-is.</para>
/// You can pass any endpoint parsed by <see cref="NBitcoin.Utils.ParseEndpoint(string, int)"/>
/// </summary>
/// <param name="endpoint">The endpoint to convert to IPEndpoint</param>
/// <exception cref="System.ArgumentNullException">The endpoint is null</exception>
/// <exception cref="System.Net.Sockets.SocketException">An error is encountered when resolving the dns name.</exception>
/// <exception cref="System.NotSupportedException">The endpoint passed is neither a DNSEndpoint or an IPEndpoint</exception>
public static async Task <IPEndPoint[]> ResolveToIPEndpointsAsync(this EndPoint endpoint)
{
if (endpoint == null)
{
throw new ArgumentNullException(nameof(endpoint));
}
if (endpoint is IPEndPoint ip)
{
return(new[] { ip });
}
else if (endpoint.AsOnionCatIPEndpoint() is IPEndPoint ip2)
{
return(new[] { ip2 });
}
else if (endpoint is DnsEndPoint dns)
{
var ips = await Dns.GetHostAddressesAsync(dns.Host);
return(ips.Select(i => new IPEndPoint(i, dns.Port)).ToArray());
}
else
{
throw new NotSupportedException(endpoint.ToString());
}
}
