use GetHostAddressesAsync

Author: justcoding121

src/Titanium.Web.Proxy/Network/Tcp/TcpConnectionFactory.cs

@@ -287,17 +287,8 @@ private async Task<TcpServerConnection> createServerConnection(string remoteHost
                 var hostname = useUpstreamProxy ? externalProxy.HostName : remoteHostName;
                 var port = useUpstreamProxy ? externalProxy.Port : remotePort;
 
-                IPHostEntry ipHostEntry;
-                if (IPAddress.TryParse(hostname, out var ipAddress))
-                {
-                    ipHostEntry = await Dns.GetHostEntryAsync(ipAddress);
-                }
-                else
-                {
-                    ipHostEntry = await Dns.GetHostEntryAsync(hostname);
-                }
-
-                if (ipHostEntry == null || ipHostEntry.AddressList.Length == 0)
+                var ipAddresses = await Dns.GetHostAddressesAsync(hostname);
+                if (ipAddresses == null || ipAddresses.Length == 0)
                 {
                     throw new Exception($"Could not resolve the hostname {hostname}");
                 }
@@ -307,8 +298,6 @@ private async Task<TcpServerConnection> createServerConnection(string remoteHost
                     session.TimeLine["Dns Resolved"] = DateTime.Now;
                 }
 
-                var ipAddresses = ipHostEntry.AddressList;
-
                 for (int i = 0; i < ipAddresses.Length; i++)
                 {
                     try