push notification helper library

http://windowsteamblog.com/windows_phone/b/wpdev/archive/2011/01/14/windows-push-notification-server-side-helper-library.aspx
http://create.msdn.com/en-us/education/catalog/article/pnhelp-wp7

main/Libs/PushRecipe_WP7_SL/Source/WindowsPhone.Recipes.Push.Server/Services/IPushService.cs

@@ -0,0 +1,39 @@
+using System.IO;
+using System.ServiceModel;
+using System.ServiceModel.Web;
+using System.Xml.Linq;
+using System;
+
+using WindowsPhone.Recipes.Push.Server.Models;
+
+namespace WindowsPhone.Recipes.Push.Server.Services
+{
+    /// <summary>
+    /// Push server services.
+    /// </summary>
+    [ServiceContract]
+    public interface IPushService
+    {
+        /// <summary>
+        /// Register user name with a push channel uri.
+        /// </summary>
+        /// <param name="userName">User name.</param>
+        /// <param name="channelUri">Push notification channel uri.</param>
+        [OperationContract]
+        void Register(string userName, Uri channelUri);
+
+        /// <summary>
+        /// Get current server information/status.
+        /// </summary>
+        /// <returns>Current server status.</returns>
+        [OperationContract]
+        ServerInfo GetServerInfo();
+
+        /// <summary>
+        /// Send a tile update with given parameter.
+        /// </summary>
+        /// <returns>User parameter to send with the tile update request.</returns>
+        [OperationContract]
+        void UpdateTile(Uri channelUri, string parameter);
+    }
+}