Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.ServiceModel/System/ServiceModel/NetHttpMessageEncoding.cs

@@ -0,0 +1,24 @@
+// <copyright>
+//   Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+
+namespace System.ServiceModel
+{
+    public enum NetHttpMessageEncoding
+    {
+        /// <summary>
+        /// Indicates using Binary message encoder.
+        /// </summary>
+        Binary,
+
+        /// <summary>
+        /// Indicates using Text message encoder.
+        /// </summary>
+        Text,
+
+        /// <summary>
+        /// Indicates using Mtom message encoder.
+        /// </summary>
+        Mtom
+    }
+}