Question

I am trying to login to this website https://www.virginmobile.com.au programatically (on the right there is a Member Login form).

That form works. But when I do a POST request to the form action (https://www.virginmobile.com.au/selfcare/MyAccount/LogoutLoginPre.jsp) it failed.

It returns a 302, then following up to the new location, it returns 405.

This is my code test1.aspx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Net;
using System.Text;
using System.IO;
using System.Security.Cryptography.X509Certificates;
using System.Net;


public partial class test1 : System.Web.UI.Page
{
  protected void Page_Load(object sender, EventArgs e)
  {
    string uri = "https://www.virginmobile.com.au/selfcare/MyAccount/LogoutLoginPre.jsp";
    string parameters = "username=0411222333&password=123";

    System.Net.ServicePointManager.CertificatePolicy = new MyPolicy();

    HttpWebRequest req = (HttpWebRequest)WebRequest.Create(uri);
    req.Method = "POST";
    req.ContentType = "application/x-www-form-urlencoded";
    //req.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.2) Gecko/20100316 Firefox/3.6.2 ( .NET CLR 3.0.4506.2152)";
    //req.Referer = "http://www.virginmobile.com.au/";
    //req.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
    req.AllowAutoRedirect = false;

    // Send the Post
    byte[] paramBytes = Encoding.ASCII.GetBytes(parameters);
    req.ContentLength = paramBytes.Length;
    Stream reqStream = req.GetRequestStream();
    reqStream.Write(paramBytes, 0, paramBytes.Length);   //Send it
    reqStream.Close();

    // Get the response
    HttpWebResponse response = (HttpWebResponse)req.GetResponse();
    if (response == null) throw new Exception("Response is null");

    if (!string.IsNullOrEmpty(response.Headers["Location"]))
    {
      string newLocation = response.Headers["Location"];

      // Request the new location
      req = (HttpWebRequest)WebRequest.Create(newLocation);
      req.Method = "POST";
      req.ContentType = "application/x-www-form-urlencoded";
      //req.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.2) Gecko/20100316 Firefox/3.6.2 ( .NET CLR 3.0.4506.2152)";
      //req.Referer = "http://www.virginmobile.com.au/";
      //req.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
      req.AllowAutoRedirect = false;
      req.CookieContainer = new CookieContainer();
      req.CookieContainer.Add(response.Cookies);

      // Send the Post
      paramBytes = Encoding.ASCII.GetBytes(parameters);
      req.ContentLength = paramBytes.Length;
      reqStream = req.GetRequestStream();
      reqStream.Write(paramBytes, 0, paramBytes.Length);   //Send it
      reqStream.Close();

      // Get the response
      response = (HttpWebResponse)req.GetResponse(); //**** 405 Method Not Allowed here
    }

    StreamReader sr = new StreamReader(response.GetResponseStream());
    string responseHtml = sr.ReadToEnd().Trim();

    Response.Write(responseHtml);
  }
}

public class MyPolicy : ICertificatePolicy
{
  public bool CheckValidationResult(ServicePoint srvPoint, X509Certificate certificate, WebRequest request, int certificateProblem)
  {
    return true; // Return true to force the certificate to be accepted.
  }
}

Could anyone help me? Thanks in advance!

Answer 1

The 302 response is trying to redirect you to another page, so the problem might be that your POST data isn’t being sent to the redirected page.

Maybe try setting HttpWebRequest.AllowAutoRedirect = false and catch the exception that you get
back. Then create another request to the redirected URL (specified in the Location response header) and then issue the request again with the same POST data.