using System.Web;
using System.IO;
using System.Text;

namespace Test
{
    public class MyHttpHandler : IHttpHandler
    {
        public void ProcessRequest(HttpContext context)
        {
            context.Request.InputStream.Seek(0, SeekOrigin.Begin);
            StreamReader StreamReader = new StreamReader(context.Request.InputStream, Encoding.UTF8);
            string JSON = StreamReader.ReadToEnd().Trim();
        }

        public bool IsReusable
        {
            get { return false; }
        }
    }
}

<?xml version="1.0"?>
<configuration>
  <system.web>
    <compilation debug="true" targetFramework="4.0" />

    <authentication mode="Windows" />

    <httpHandlers>
      <add verb="*" path="MyHttpHandler.aspx" type="Test.MyHttpHandler, Test"/>
    </httpHandlers>

  </system.web>

  <system.webServer>
     <modules runAllManagedModulesForAllRequests="true"/>
  </system.webServer>
</configuration>

System.IO.StreamReader sr = new  System.IO.StreamReader(Request.InputStream);
string line = "";
line = sr.ReadToEnd();

08	    protected function parseRequest() {
09	        if ($this->method == 'PUT') {
10	            $raw  = '';
11	            $httpContent = fopen('php://input', 'r');
12	            while ($kb = fread($httpContent, 1024)) {
13	                $raw .= $kb;
14	            }
15	            fclose($httpContent);
16	            $params = array();
17	            parse_str($raw, $params);
18	 
19	            if (isset($params['data'])) {
20	                $this->params =  json_decode(stripslashes($params['data']));
21	            } else {
22	                $params = json_decode(stripslashes($raw));
23	                $this->params = $params->data;
24	            }
25	        } else {
26	            // grab JSON data if there...
27	            $this->params = (isset($_REQUEST['data'])) ? json_decode(stripslashes($_REQUEST['data'])) : null;
28	 
29	            if (isset($_REQUEST['data'])) {
30	                $this->params =  json_decode(stripslashes($_REQUEST['data']));
31	            } else {
32	                $raw  = '';
33	                $httpContent = fopen('php://input', 'r');
34	                while ($kb = fread($httpContent, 1024)) {
35	                    $raw .= $kb;
36	                }
37	                $params = json_decode(stripslashes($raw));
38	                $this->params = $params->data;
39	            }
40	        }