Unity3d-HttpWebRequest-调用接口

using System.IO;
using System.Net;
using System.Text;

/*Siky游戏*/
namespace SIFrameWork
{

    public class SIWebRequest 
    {
        public static string GetHttpResponse(string url, int timeOut)
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.Method = "GET";
            request.ContentType = "text/html:charset=UTF-8";
            request.UserAgent = null;
            request.Timeout = timeOut;

            HttpWebResponse response = request.GetResponse() as HttpWebResponse;
            Stream responseStream = response.GetResponseStream();
            StreamReader streamReader = new StreamReader(responseStream, Encoding.UTF8);

            string resultStr = streamReader.ReadToEnd();
            streamReader.Close();
            responseStream.Close();
            return resultStr;
        }
    }
}