Fix error 404 and changes httphelper for WP

YoutubeExtractor/YoutubeExtractor/Decipherer.cs

@@ -9,7 +9,7 @@ internal static class Decipherer
     {
         public static string DecipherWithVersion(string cipher, string cipherVersion)
         {
-            string jsUrl = string.Format("http://s.ytimg.com/yts/jsbin/player-{0}.js", cipherVersion);
+            string jsUrl = string.Format("http://s.ytimg.com/yts/jsbin/player-{0}/base.js", cipherVersion);
             string js = HttpHelper.DownloadString(jsUrl);
 
             //Find "C" in this: var A = B.sig||C (B.s)

YoutubeExtractor/YoutubeExtractor/DownloadUrlResolver.cs

@@ -230,7 +230,7 @@ private static string GetDecipheredSignature(string htmlPlayerVersion, string si
 
         private static string GetHtml5PlayerVersion(JObject json)
         {
-            var regex = new Regex(@"player-(.+?).js");
+            var regex = new Regex(@"player-(.+?)/base.js");
 
             string js = json["assets"]["js"].ToString();
 

YoutubeExtractor/YoutubeExtractor/HttpHelper.cs

@@ -5,13 +5,23 @@
 using System.Text;
 using System.Text.RegularExpressions;
 
+
 namespace YoutubeExtractor
 {
     internal static class HttpHelper
     {
         public static string DownloadString(string url)
         {
-#if PORTABLE
+#if WINDOWS_PHONE
+            var request = new Windows.Web.Http.HttpMethod("GET");
+            var w = new Windows.Web.Http.HttpClient();
+
+            var r = await w.GetAsync(new Uri(url));
+            r.RequestMessage.Method = request;
+            r.EnsureSuccessStatusCode();
+            var returno = await r.Content.ReadAsStringAsync();
+            return returno;
+#elif PORTABLE
             var request = WebRequest.Create(url);
             request.Method = "GET";
 
@@ -21,7 +31,7 @@ public static string DownloadString(string url)
                 null);
 
             return task.ContinueWith(t => ReadStreamFromResponse(t.Result)).Result;
-#else
+#else 
             using (var client = new WebClient())
             {
                 client.Encoding = System.Text.Encoding.UTF8;
@@ -32,7 +42,7 @@ public static string DownloadString(string url)
 
         public static string HtmlDecode(string value)
         {
-#if PORTABLE
+#if PORTABLE 
             return System.Net.WebUtility.HtmlDecode(value);
 #else
             return System.Web.HttpUtility.HtmlDecode(value);