Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / MIT / System / Web / Mobile / ErrorHandlerModule.cs / 1305376 / ErrorHandlerModule.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- using System; using System.IO; using System.Web; using System.Diagnostics; using System.Collections; using System.Text; using System.Security.Permissions; using System.Globalization; namespace System.Web.Mobile { /* * Error Handler Module * An Http Module that traps errors, and formats them for the appropriate * device. * * Copyright (c) 2000 Microsoft Corporation */ ///[AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] [Obsolete("The System.Web.Mobile.dll assembly has been deprecated and should no longer be used. For information about how to develop ASP.NET mobile applications, see http://go.microsoft.com/fwlink/?LinkId=157231.")] public class ErrorHandlerModule : IHttpModule { /// /// void IHttpModule.Init(HttpApplication application) { // application.BeginRequest += (new EventHandler(this.Application_BeginRequest)); application.Error += (new EventHandler(this.Application_Error)); // application.EndRequest += (new EventHandler(this.Application_EndRequest)); } /* obsolete private void Application_BeginRequest(Object source, EventArgs e) { HttpApplication application = (HttpApplication)source; HttpContext context = application.Context; if (context != null) { // Some device/gateway combination sends postdata's charset // in a separate header rather than in Content-Type. SetCharsetInRequestHeader(context); } } private void SetCharsetInRequestHeader(HttpContext context) { String userAgent = context.Request.UserAgent; if (userAgent != null && CultureInfo.InvariantCulture.CompareInfo.IsPrefix(userAgent, "UP")) { String postDataCharset = context.Request.Headers["x-up-devcap-post-charset"]; if (postDataCharset != null && postDataCharset.Length > 0) { try { context.Request.ContentEncoding = Encoding.GetEncoding(postDataCharset); } catch { // Exception may be thrown when charset is not valid. // In this case, do nothing, and let the framework // use the configured RequestEncoding setting. } } } } */ /* Obsolete private void Application_EndRequest(Object source, EventArgs e) { HttpApplication application = (HttpApplication)source; HttpContext context = application.Context; if (context != null) { MobileRedirect.CheckForInvalidRedirection(context); } } */ private void Application_Error(Object source, EventArgs e) { HttpApplication application = (HttpApplication)source; HttpContext context = null; bool useAdaptiveErrorReporting = false; try { context = application.Context; if(context.IsCustomErrorEnabled) { return; } Exception error = context.Server.GetLastError(); if ((error == null) || (!RequiresAdaptiveErrorReporting(context, error))) { return; } useAdaptiveErrorReporting = true; MobileErrorInfo errorInfo = new MobileErrorInfo(error); context.Items[MobileErrorInfo.ContextKey] = errorInfo; context.Response.Clear(); IHttpHandler errorHandler = CreateErrorFormatter(context); errorHandler.ProcessRequest(context); } catch(Exception e2) { if (useAdaptiveErrorReporting && context != null) { // Failed to format error. Let it continue through // default processing. context.Response.Write(e2.ToString()); context.Server.ClearError(); return; } else { return; } } context.Server.ClearError(); } /// /// void IHttpModule.Dispose() { } private bool RequiresAdaptiveErrorReporting(HttpContext context, Exception error) { // Check if the error message is a non-500 error. HttpException httpError = error as HttpException; if (httpError != null && httpError.GetHttpCode() != 500) { return false; } bool b; // Checks whether custom error formatting is required for the // given device. MobileCapabilities caps = context.Request.Browser as MobileCapabilities; if (caps == null) { b = false; } else if (caps.PreferredRenderingMime != "text/html") { b = true; } else { b = caps.RequiresHtmlAdaptiveErrorReporting; } return b; } private IHttpHandler CreateErrorFormatter(HttpContext context) { // return new System.Web.UI.MobileControls.ErrorFormatterPage(); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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