private void ExecuteInternal(IHttpHandler handler, TextWriter writer, bool preserveForm, bool setPreviousPage, VirtualPath path, VirtualPath filePath, string physPath, Exception error, string queryStringOverride)
{
if (handler == null)
{
throw new ArgumentNullException("handler");
}
HttpRequest request = this._context.Request;
HttpResponse response = this._context.Response;
HttpApplication applicationInstance = this._context.ApplicationInstance;
HttpValueCollection form = null;
VirtualPath path2 = null;
string queryStringText = null;
TextWriter writer2 = null;
AspNetSynchronizationContext syncContext = null;
this.VerifyTransactionFlow(handler);
this._context.PushTraceContext();
this._context.SetCurrentHandler(handler);
bool enabled = this._context.SyncContext.Enabled;
this._context.SyncContext.Disable();
try
{
try
{
this._context.ServerExecuteDepth++;
path2 = request.SwitchCurrentExecutionFilePath(filePath);
if (!preserveForm)
{
form = request.SwitchForm(new HttpValueCollection());
if (queryStringOverride == null)
{
queryStringOverride = string.Empty;
}
}
if (queryStringOverride != null)
{
queryStringText = request.QueryStringText;
request.QueryStringText = queryStringOverride;
}
if (writer != null)
{
writer2 = response.SwitchWriter(writer);
}
Page page = handler as Page;
if (page != null)
{
if (setPreviousPage)
{
page.SetPreviousPage(this._context.PreviousHandler as Page);
}
Page page2 = this._context.Handler as Page;
if ((page2 != null) && page2.SmartNavigation)
{
page.SmartNavigation = true;
}
if (page is IHttpAsyncHandler)
{
syncContext = this._context.InstallNewAspNetSynchronizationContext();
}
}
if (((handler is StaticFileHandler) || (handler is DefaultHttpHandler)) && !DefaultHttpHandler.IsClassicAspRequest(filePath.VirtualPathString))
{
try
{
response.WriteFile(physPath);
}
catch
{
error = new HttpException(0x194, string.Empty);
}
}
else if (!(handler is Page))
{
error = new HttpException(0x194, string.Empty);
}
else
{
if (handler is IHttpAsyncHandler)
{
bool isInCancellablePeriod = this._context.IsInCancellablePeriod;
if (isInCancellablePeriod)
{
this._context.EndCancellablePeriod();
}
try
{
IHttpAsyncHandler handler2 = (IHttpAsyncHandler)handler;
IAsyncResult result = handler2.BeginProcessRequest(this._context, null, null);
if (!result.IsCompleted)
{
bool flag3 = false;
try
{
try
{
}
finally
{
Monitor.Exit(applicationInstance);
flag3 = true;
}
WaitHandle asyncWaitHandle = result.AsyncWaitHandle;
if (asyncWaitHandle == null)
{
goto Label_0210;
}
asyncWaitHandle.WaitOne();
goto Label_0226;
Label_020A:
Thread.Sleep(1);
Label_0210:
if (!result.IsCompleted)
{
goto Label_020A;
}
}
finally
{
if (flag3)
{
Monitor.Enter(applicationInstance);
}
}
}
Label_0226:
try
{
handler2.EndProcessRequest(result);
}
catch (Exception exception)
{
error = exception;
}
goto Label_0306;
}
finally
{
if (isInCancellablePeriod)
{
this._context.BeginCancellablePeriod();
}
}
}
using (new DisposableHttpContextWrapper(this._context))
{
try
{
handler.ProcessRequest(this._context);
}
catch (Exception exception2)
{
error = exception2;
}
}
}
}
finally
{
this._context.ServerExecuteDepth--;
this._context.RestoreCurrentHandler();
if (writer2 != null)
{
response.SwitchWriter(writer2);
}
if ((queryStringOverride != null) && (queryStringText != null))
{
request.QueryStringText = queryStringText;
}
if (form != null)
{
request.SwitchForm(form);
}
request.SwitchCurrentExecutionFilePath(path2);
if (syncContext != null)
{
this._context.RestoreSavedAspNetSynchronizationContext(syncContext);
}
if (enabled)
{
this._context.SyncContext.Enable();
}
this._context.PopTraceContext();
}
}
catch
{
throw;
}
Label_0306:
if (error == null)
{
return;
}
if ((error is HttpException) && (((HttpException)error).GetHttpCode() != 500))
{
error = null;
}
if (path != null)
{
throw new HttpException(System.Web.SR.GetString("Error_executing_child_request_for_path", new object[] { path }), error);
}
throw new HttpException(System.Web.SR.GetString("Error_executing_child_request_for_handler", new object[] { handler.GetType().ToString() }), error);
}