refactor http client factory for mono

MediaBrowser.ServerApplication/Native/HttpClientFactory.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Net;
+using System.Net.Cache;
+using System.Net.Http;
+
+namespace MediaBrowser.ServerApplication.Native
+{
+    /// <summary>
+    /// Class HttpClientFactory
+    /// </summary>
+    public static class HttpClientFactory
+    {
+        /// <summary>
+        /// Gets the HTTP client.
+        /// </summary>
+        /// <param name="enableHttpCompression">if set to <c>true</c> [enable HTTP compression].</param>
+        /// <returns>HttpClient.</returns>
+        public static HttpClient GetHttpClient(bool enableHttpCompression)
+        {
+            return new HttpClient(new WebRequestHandler
+            {
+                CachePolicy = new RequestCachePolicy(RequestCacheLevel.Revalidate),
+                AutomaticDecompression = enableHttpCompression ? DecompressionMethods.Deflate : DecompressionMethods.None
+            })
+            {
+                Timeout = TimeSpan.FromSeconds(20)
+            };
+        }
+    }
+}