title: IPhone Push Notification from c#
body: <p>We have been using apple push notification service and we can send push message from gateway.sandbox.push.apple.com
  ,All I know this address is test, so we have to use real address gateway.push.apple.com, we can not send push message from this address. Could you help us?</p>
  
  <p>Our code is;</p>
  
  <pre><code>public void pushMessage(string deviceID, string Mesaj)
  {
      int port = 2195;
      String hostname = "gateway.sandbox.push.apple.com";     // TEST
      //String hostname = "gateway.push.apple.com";           // REAL
  
      //        @"cert.p12";
      String certificatePath = HttpContext.Current.Server.MapPath("cert.p12");
      //X509Certificate2 clientCertificate = new X509Certificate2(certificatePath, "");
  
  
      X509Certificate2 clientCertificate = new X509Certificate2(System.IO.File.ReadAllBytes(certificatePath), "", X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.Exportable);
  
  
  
      X509Certificate2Collection certificatesCollection = new X509Certificate2Collection(clientCertificate);
      TcpClient client = new TcpClient(hostname, port);
      SslStream sslStream = new SslStream(client.GetStream(), false, new RemoteCertificateValidationCallback(ValidateServerCertificate), null);
      try
      {
          sslStream.AuthenticateAsClient(hostname, certificatesCollection, SslProtocols.Tls, true);
      }
      catch (Exception e)
      {
          throw (e);
          client.Close();
          return;
      }
      MemoryStream memoryStream = new MemoryStream();
      BinaryWriter writer = new BinaryWriter(memoryStream);
      writer.Write((byte)0);  //The command
      writer.Write((byte)0);  //The first byte of the deviceId length (big-endian first byte)
      writer.Write((byte)32); //The deviceId length (big-endian second byte)
  
      writer.Write(HexStringToByteArray(deviceID.ToUpper()));
      String payload = "{\"aps\":{\"alert\":\"" + Mesaj + "\",\"badge\":0,\"sound\":\"default\"}}";
      writer.Write((byte)0);
      writer.Write((byte)payload.Length);
      byte[] b1 = System.Text.Encoding.UTF8.GetBytes(payload);
      writer.Write(b1);
      writer.Flush();
      byte[] array = memoryStream.ToArray();
      sslStream.Write(array);
      sslStream.Flush();
      client.Close();
  }
  </code></pre>
  
  <hr>
  
  <p>you can watch the video of the problem</p>
  
  <p><a href="http://youtu.be/zVt_g7Q1wV8" rel="nofollow">Video link</a></p>