WebRequest.cs

namespace Assets.Scripts
{
   using System;
   using System.Net;
   using System.Net.Security;
   using System.Text;

   /// <summary>
   /// Web request using the WebClient class.
   /// </summary>
   /// <seealso cref="Assets.Scripts.WebRequest" />
   internal class WebRequest
   {
      /// <summary>
      /// The web client.
      /// </summary>
      private WebClient _client;

      /// <summary>
      /// The error message.
      /// </summary>
      private string _error;

      /// <summary>
      /// The is done flag.
      /// </summary>
      private bool _isDone;

      /// <summary>
      /// The progress.
      /// </summary>
      private float _progress;

      /// <summary>
      /// The text.
      /// </summary>
      private string _text;

      /// <summary>
      /// Initializes a new instance of the <see cref="WebRequest"/> class.
      /// </summary>
      /// <param name="url">The URL.</param>
      public WebRequest(string url)
      {
         this._client = new System.Net.WebClient();
         this._client.DownloadProgressChanged += this.WebClientProgressChanged;
         this._client.DownloadStringCompleted += this.WebClientDownloadCompleted;
         this._client.DownloadStringAsync(new Uri(url));
      }

      /// <summary>
      /// Initializes a new instance of the <see cref="WebRequestDotNet"/> class.
      /// </summary>
      /// <param name="url">The URL.</param>
      /// <param name="form">The form.</param>
      public WebRequest(string url, UnityEngine.WWWForm form)
      {
         this._client = new System.Net.WebClient();
         this._client.UploadProgressChanged += this.WebClientUploadProgressChanged;
         this._client.UploadDataCompleted += this.WebClientUploadCompleted;

         this._client.Headers[HttpRequestHeader.ContentType] = "application/x-www-form-urlencoded";

         // Try to get the header from the Unity form
         foreach (var header in form.headers)
         {
            const string ContentType = "Content-Type";
            if (header.Key == ContentType)
            {
               string contentType = header.Value;
               this._client.Headers.Remove(ContentType);
               this._client.Headers[ContentType] = contentType;
            }
         }

         this._client.UploadDataAsync(new Uri(url), form.data);
      }

      /// <summary>
      /// Gets the error message. Returns null if there is no error.
      /// </summary>
      /// <value>
      /// The error message.
      /// </value>
      public string Error
      {
         get
         {
            return this._error;
         }
      }

      /// <summary>
      /// Gets a value indicating whether this request is done.
      /// </summary>
      /// <value>
      ///   <c>true</c> if this instance is done; otherwise, <c>false</c>.
      /// </value>
      public bool IsDone
      {
         get
         {
            return this._isDone;
         }
      }

      /// <summary>
      /// Gets the progress, 0 to 1.
      /// </summary>
      /// <value>
      /// The progress.
      /// </value>
      public float Progress
      {
         get
         {
            return this._progress / 100.0f;
         }
      }

      /// <summary>
      /// Gets the resulting text.
      /// </summary>
      /// <value>
      /// The text.
      /// </value>
      public string Text
      {
         get
         {
            return this._text;
         }
      }

      /// <summary>
      /// Called when the download is complete.
      /// </summary>
      /// <param name="sender">The sender.</param>
      /// <param name="e">The <see cref="DownloadStringCompletedEventArgs"/> instance containing the event data.</param>
      private void WebClientDownloadCompleted(object sender, DownloadStringCompletedEventArgs e)
      {
         if (e.Error != null)
         {
            this._error = e.Error.ToString();
         }
         else
         {
            this._text = e.Result;
         }

         this._isDone = true;
      }

      /// <summary>
      /// Called when the progress changes.
      /// </summary>
      /// <param name="sender">The sender.</param>
      /// <param name="e">The <see cref="DownloadProgressChangedEventArgs"/> instance containing the event data.</param>
      private void WebClientProgressChanged(object sender, DownloadProgressChangedEventArgs e)
      {
         this._progress += e.ProgressPercentage;
      }

      /// <summary>
      /// Called when the upload is complete.
      /// </summary>
      /// <param name="sender">The sender.</param>
      /// <param name="e">The <see cref="UploadValuesCompletedEventArgs"/> instance containing the event data.</param>
      private void WebClientUploadCompleted(object sender, UploadDataCompletedEventArgs e)
      {
         if (e.Error != null)
         {
            this._error = e.Error.ToString();
         }
         else
         {
            this._text = Encoding.UTF8.GetString(e.Result);
         }

         this._isDone = true;
      }

      /// <summary>
      /// Called when the upload progress changes.
      /// </summary>
      /// <param name="sender">The sender.</param>
      /// <param name="e">The <see cref="UploadProgressChangedEventArgs"/> instance containing the event data.</param>
      private void WebClientUploadProgressChanged(object sender, UploadProgressChangedEventArgs e)
      {
         this._progress += e.ProgressPercentage;
      }
   }
}