添加 字符串转 IPEndPoint 的默认值版本

Project.FLY.Misc/MISC/StringConverter.cs

@@ -141,6 +141,73 @@ namespace Misc
             return null;
         }
 
+        // 摘要:
+        //     将主机名或 IP 地址解析为 IPEndPoint 实例。
+        public static IPEndPoint ToIPEndPoint(string hostNameOrAddress, IPAddress default_address, int default_port)
+        {
+            IPAddress ip = default_address;
+            int port = default_port;
+
+            if (string.IsNullOrEmpty(hostNameOrAddress))
+            {
+                return new IPEndPoint(ip, port);
+            }
+
+            string[] s = hostNameOrAddress.Split(new char[] { ':' }, StringSplitOptions.RemoveEmptyEntries);
+            if (s.Length == 1)
+            {
+                try
+                {
+                    ip = IPAddress.Parse(s[0]);
+                }
+                catch
+                {
+                    try
+                    {
+                        IPAddress[] ips = System.Net.Dns.GetHostEntry(s[0]).AddressList;
+                        if (ips.Length == 1)
+                            ip = ips[0];
+                    }
+                    catch
+                    {
+
+                    }
+                }
+            }
+            else if (s.Length == 2)
+            {
+                try
+                {
+                    port = int.Parse(s[1]);
+                }
+                catch
+                {
+
+                }
+
+                try
+                {
+                    ip = IPAddress.Parse(s[0]);
+                }
+                catch
+                {
+                    try
+                    {
+                        IPAddress[] ips = System.Net.Dns.GetHostEntry(s[0]).AddressList;
+                        if (ips.Length == 1)
+                            ip = ips[0];
+                    }
+                    catch
+                    {
+
+                    }
+                }
+            }
+
+
+            return new IPEndPoint(ip, port);
+        }
+
         public static string IPEndPoint2DirectoryName(IPEndPoint ipep) 
         {
             return ipep.Address.ToString() + "_" + ipep.Port.ToString();