Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web.Extensions/Script/Services/PageClientProxyGenerator.cs

@@ -0,0 +1,62 @@
+//------------------------------------------------------------------------------
+// <copyright file="PageClientProxyGenerator.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+ 
+namespace System.Web.Script.Services {
+    using System.Web;
+    using System.Web.UI;
+
+    internal class PageClientProxyGenerator : ClientProxyGenerator {
+        private string _path;
+
+        internal PageClientProxyGenerator(IPage page, bool debug)
+            : this(VirtualPathUtility.MakeRelative(page.Request.Path, page.Request.FilePath), debug) {
+            // Dev10 Bug 597146: Use VirtualPathUtility to build a relative path from the path to the file.
+            // Previously just Page.Request.FilePath was used, which was for example, /app/foo/page.aspx,
+            // but this breaks with cookieless sessions since the url is /app/foo/(sessionid)/page.aspx.
+            // We need to make a relative path from page.Request.Path (e.g. /app/foo) to page.Request.FilePath
+            // (e.g. /app/foo/page.aspx) rather than just strip off 'page.aspx' with Path.GetFileName, because
+            // the url may include PathInfo, such as "/app/foo/page.aspx/pathinfo1/pathinfo2", and in that case
+            // we need the path to be ../../page.aspx
+        }
+
+        internal PageClientProxyGenerator(string path, bool debug) {
+            _path = path;
+            _debugMode = debug;
+        }
+
+        internal static string GetClientProxyScript(HttpContext context, IPage page, bool debug) {
+            // Do nothing during unit tests which have no context or page
+            if (context == null || page == null) return null;
+
+            WebServiceData webServiceData = WebServiceData.GetWebServiceData(context,
+                page.AppRelativeVirtualPath,
+                false /*failIfNoData*/,
+                true /*pageMethods */);
+            if (webServiceData == null)
+                return null;
+
+            PageClientProxyGenerator proxyGenerator = new PageClientProxyGenerator(page, debug);
+            return proxyGenerator.GetClientProxyScript(webServiceData);
+        }
+
+        protected override void GenerateTypeDeclaration(WebServiceData webServiceData, bool genClass) {
+            if (genClass) {
+                _builder.Append("PageMethods.prototype = ");
+            }
+            else {
+                _builder.Append("var PageMethods = ");
+            }
+        }
+
+        protected override string GetProxyTypeName(WebServiceData data) {
+            return "PageMethods";
+        }
+
+        protected override string GetProxyPath() {
+            return _path;
+        }
+    }
+}