Create NetUtil.cs

Assets/TEngine/Runtime/Net/NetUtil.cs

@@ -0,0 +1,55 @@
+using System.Net;
+using System.Net.Sockets;
+
+
+namespace TEngine.Net
+{
+    class NetUtil
+    {
+        public static bool IsHaveIpV6Address(IPAddress[] IPs, ref IPAddress[] outIPs)
+        {
+            int v6Count = 0;
+            for (int i = 0; i < IPs.Length; i++)
+            {
+                if (AddressFamily.InterNetworkV6.Equals(IPs[i].AddressFamily))
+                {
+                    v6Count++;
+                }
+            }
+            if (v6Count > 0)
+            {
+                outIPs = new IPAddress[v6Count];
+                int resIndex = 0;
+                for (int i = 0; i < IPs.Length; i++)
+                {
+                    if (AddressFamily.InterNetworkV6.Equals(IPs[i].AddressFamily))
+                    {
+                        outIPs[resIndex++] = IPs[i];
+                    }
+                }
+
+                return true;
+            }
+
+            return false;
+        }
+
+        public static IPEndPoint GetEndPoint(string server, int port)
+        {
+            IPAddress[] IPs = Dns.GetHostAddresses(server);
+            IPAddress[] finalIPS = IPs;
+            if (Socket.OSSupportsIPv6 && NetUtil.IsHaveIpV6Address(IPs, ref finalIPS))
+            {
+                TLogger.LogError("socket use addr ipV6: {0}, IP count:{1} AddressFamily[{2}]", server, finalIPS.Length, finalIPS[0].AddressFamily);
+            }
+
+            if (finalIPS.Length > 0)
+            {
+                return new IPEndPoint(finalIPS[0], port);
+            }
+
+            return null;
+        }
+
+    }
+}