using System;

using System.Text;

using System.Net;

using System.IO;

​

public class Program

{

    public static void Main()

    {

        string ClientName = "mk";

        string Password = "9299mk";

        string Keyword = "GEMEZZS";

        string ShortCode = "95799";

        string dateTime = DateTime.UtcNow.AddHours(+7).ToString("yyyyMMddHHmmss");

        if (!string.IsNullOrWhiteSpace(ShortCode))

            Password = CreateMD5(Password);

        string accessToken = ClientName + Keyword + ShortCode + dateTime + Password;

        accessToken = accessToken.ToUpper();

        accessToken = CreateMD5(accessToken);

        string requestURL = "";

        //PSMS

        if (!string.IsNullOrWhiteSpace(ShortCode))

            requestURL = "http://223.27.128.222/INAPSMSToken/GetToken?AccessToken=" + accessToken + "&Keyword=" + Keyword + "&ShortCode=" + ShortCode + "&DateTime=" + dateTime;

        //DCB

        else

            requestURL = "http://sgp.etracker.cc/SGDCBToken/GetToken?AccessToken=" + accessToken + "&ServiceName=" + Keyword + "&&DateTime=" + dateTime;

        Console.WriteLine(requestURL);

        var result = Get(requestURL);

        if (result == "405")

        {

            string externalIpString = new WebClient().DownloadString("http://icanhazip.com").Replace("\\r\\n", "").Replace("\\n", "").Trim();

            var externalIp = IPAddress.Parse(externalIpString);

            Console.WriteLine("Whitelist this IP and try again. " + externalIp.ToString());

        }

​

        var split = result.Split(',');

        if (split.Length > 1)

        {

            Console.WriteLine("Token = " + split[0]);

            Console.WriteLine("Expire in = " + split[1] + " seconds = " + DateTime.UtcNow.AddHours(8).AddSeconds(Convert.ToDouble(split[1])));

        }

        else

            Console.WriteLine(result);

    }

​

    public static string CreateMD5(string input)

    {

        using (System.Security.Cryptography.MD5 md5 = System.Security.Cryptography.MD5.Create())

        {

            byte[] inputBytes = System.Text.Encoding.ASCII.GetBytes(input);

            byte[] hashBytes = md5.ComputeHash(inputBytes);

            // Convert the byte array to hexadecimal string

            StringBuilder sb = new StringBuilder();

            for (int i = 0; i < hashBytes.Length; i++)

            {

                sb.Append(hashBytes[i].ToString("X2"));

            }

​

            return sb.ToString();

        }

    }

​

    public static string Get(string uri)

    {

        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);

        request.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;

        using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())

            using (Stream stream = response.GetResponseStream())

                using (StreamReader reader = new StreamReader(stream))

                {

                    return reader.ReadToEnd();

                }

    }

}