post

using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.IO;
using System.Collections.Specialized;

class PosT
{

    public void POST()
    {
        string url = "http://testing.electroquimica.cl/login"; //mediciones/subir_archivo";
        HttpWebRequest tokenRequest = (HttpWebRequest)WebRequest.Create(url);
        tokenRequest.CookieContainer = new CookieContainer();
        HttpWebResponse tokenResponse = (HttpWebResponse)tokenRequest.GetResponse();
        String token = tokenResponse.Cookies["csrftoken"].ToString().Split('=')[1];


        HttpWebRequest loginRequest = (HttpWebRequest)WebRequest.Create(url);
        loginRequest.Method = "post";
        loginRequest.CookieContainer = new CookieContainer();
        loginRequest.ContentType = "application/x-www-form-urlencoded";

        string tempEmail = "arojas";
        string tempPass = "andrea.rojas";

        loginRequest.CookieContainer.Add(new Uri("http://testing.electroquimica.cl"), tokenResponse.Cookies);
      //  string dd = string(new Uri("http://testing.electroquimica.cl"), tokenResponse.Cookies));
        String postData = "csrfmiddlewaretoken=" + token;
        postData += "&username=" + tempEmail;
        postData += "&password=" + tempPass;

        byte[] data = Encoding.ASCII.GetBytes(postData);
        loginRequest.ContentLength = data.Length; // +1;
        loginRequest.Timeout = 3000;

        //String encoded = System.Convert.ToBase64String(System.Text.Encoding.GetEncoding("ISO-8859-1").GetBytes(tempEmail + ":" + tempPass));
        loginRequest.Headers.Add("Origin", "http://testing.electroquimica.cl");

        loginRequest.GetRequestStream().Write(data, 0, data.Length);
        loginRequest.PreAuthenticate = true;

        //loginRequest.Headers.Add("Accept-Language", "en-us");

        try
        {
            HttpWebResponse response = (HttpWebResponse)loginRequest.GetResponse();

            if (response.StatusCode == HttpStatusCode.OK)
            {
                string url1 = "http://testing.electroquimica.cl/mediciones/subir_archivo"; //mediciones/subir_archivo";
                HttpWebRequest tokenRequest1 = (HttpWebRequest)WebRequest.Create(url1);
                tokenRequest1.CookieContainer = new CookieContainer();
                HttpWebResponse tokenResponse1 = (HttpWebResponse)tokenRequest1.GetResponse();
                String token1 = tokenResponse1.Cookies["csrftoken"].ToString().Split('=')[1];

                HttpWebRequest subirrequest = (HttpWebRequest)WebRequest.Create(url1);
                subirrequest.Method = WebRequestMethods.Http.Post;
                subirrequest.CookieContainer = new CookieContainer();
                string boundaryString = "------WebKitFormBoundaryizR2U9c55ZBosjVC";
                subirrequest.ContentType = "multipart/form-data; boundary=" + boundaryString;
                subirrequest.Headers.Add("Origin", "http://testing.electroquimica.cl");
                subirrequest.KeepAlive = true; //false
                subirrequest.Credentials = System.Net.CredentialCache.DefaultCredentials;


                subirrequest.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
                subirrequest.UserAgent = "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.114 Safari/537.36";
                subirrequest.Headers.Add("Accept-Encoding: gzip,deflate,sdch");
                subirrequest.Headers.Add("Accept-Language: es-ES,es;q=0.8");
                subirrequest.Headers.Add("Upgrade-Insecure-Requests: 1");

                //String postData1 = "csrfmiddlewaretoken=" + token1;
                //postData += "&username=" + tempEmail;
                //postData += "&password=" + tempPass;

                //byte[] data1 = Encoding.ASCII.GetBytes(postData1);
                //subirrequest.w .GetRequestStream().WriteByte(data1);

                subirrequest.PreAuthenticate = true;



                //request.Credentials = CredentialCache.DefaultNetworkCredentials;
                subirrequest.CookieContainer.Add(new Uri("http://testing.electroquimica.cl/mediciones/subir_archivo"), tokenResponse1.Cookies);
                string fileUrl = @"C:\\Desarrollo\\Archivos\\Extraccion\\Datos  23-03-2016 al 24-03-2016.xlsx";

                MemoryStream postDataStream = new MemoryStream();
                StreamWriter postDataWriter = new StreamWriter(postDataStream);


                // Include the file in the post data
                postDataWriter.Write("--" + boundaryString + "");
                postDataWriter.Write("\r\nContent-Disposition: form-data;"
                                       + " name=\"{0}\"\r\n\r\n{1}",
                                       "csrfmiddlewaretoken",
                                       token1);

                postDataWriter.Write("\r\n--" + boundaryString + "");
                postDataWriter.Write("\r\nContent-Disposition: form-data;"
                                       + " name=\"{0}\";"
                                        + " filename=\"{1}\""
                                        + "\r\nContent-Type: {2}\r\n\r\n",
                                        "file",
                                        Path.GetFileName(fileUrl),
                                        Path.GetExtension(fileUrl));
                postDataWriter.Flush();


              //  postDataStream.WriteTo(postDataStream);

                FileStream fileStream = new FileStream(fileUrl, FileMode.Open, FileAccess.Read);
                byte[] buffer = new byte[1024];
                int bytesRead = 0;
                while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
                {
                    postDataStream.Write(buffer, 0, bytesRead);
                }
                fileStream.Close();

               // string boundaryString = "----SomeRandomText";
                postDataWriter.Write("\r\n--" + boundaryString + "--\r\n");
                postDataWriter.Flush();

                // Set the http request body content length
                subirrequest.ContentLength = postDataStream.Length;
                //subirrequest.ContentLength = postDataStream.Length;

                // Dump the post data from the memory stream to the request stream
                using (Stream s = subirrequest.GetRequestStream())
                {
                    postDataStream.WriteTo(s);
                }
                postDataStream.Close();


            }
            else
            {
                string hh = "no conectar";
              //  serverMessenger.SendErrorMessage(0);
                //Debug.LogError("Cannot Find User. TryToLogin finished");
            }
        }
        catch (WebException e)
        {

            using (WebResponse response = e.Response)
            {
                HttpWebResponse httpResponse = (HttpWebResponse)response;
                string jaja = "Error code: " + httpResponse.StatusCode;
                //using (Stream data = response.GetResponseStream())
                //{
                //    string text = new StreamReader(data).ReadToEnd();
                //    Console.WriteLine(text);
                //}
            }
        }

    }

}