private void OnAsyncCompletion(IAsyncResult readAsyncResult)
{
if (readAsyncResult.CompletedSynchronously)
{
return;
}
HttpAsyncResult httpAsyncResult = readAsyncResult.AsyncState as HttpAsyncResult;
Exception error = null;
try {
int bytesRead = _inputStream.EndRead(readAsyncResult);
byte[] buffer = _app.EntityBuffer;
// loop to prevent recursive calls and potential stack overflow when it completes synchronously
while (bytesRead != 0)
{
readAsyncResult = _inputStream.BeginRead(buffer, 0, buffer.Length, _callback, httpAsyncResult);
if (!readAsyncResult.CompletedSynchronously)
{
return;
}
bytesRead = _inputStream.EndRead(readAsyncResult);
}
}
catch (Exception e) {
error = e;
}
httpAsyncResult.Complete(false, null, error);
}
private IAsyncResult OnEnter(Object sender, EventArgs e, AsyncCallback cb, Object state) {
Debug.Assert(_inputStream == null);
_app = (HttpApplication)sender;
HttpContext context = _app.Context;
HttpRequest request = context.Request;
HttpWorkerRequest wr = context.WorkerRequest;
HttpAsyncResult httpAsyncResult = new HttpAsyncResult(cb, state);
AsyncPreloadModeFlags asyncPreloadMode = context.AsyncPreloadMode;
int contentLength;
bool isForm = false;
bool isFormMultiPart = false;
if (asyncPreloadMode == AsyncPreloadModeFlags.None
|| request.ReadEntityBodyMode != ReadEntityBodyMode.None
|| wr == null
|| !wr.SupportsAsyncRead
|| !wr.HasEntityBody()
|| wr.IsEntireEntityBodyIsPreloaded()
|| context.Handler == null
|| context.Handler is TransferRequestHandler
|| context.Handler is DefaultHttpHandler
|| (contentLength = request.ContentLength) > RuntimeConfig.GetConfig(context).HttpRuntime.MaxRequestLengthBytes
|| ((isForm = StringUtil.StringStartsWithIgnoreCase(request.ContentType, "application/x-www-form-urlencoded"))
&& (asyncPreloadMode & AsyncPreloadModeFlags.Form) != AsyncPreloadModeFlags.Form)
|| ((isFormMultiPart = StringUtil.StringStartsWithIgnoreCase(request.ContentType, "multipart/form-data"))
&& (asyncPreloadMode & AsyncPreloadModeFlags.FormMultiPart) != AsyncPreloadModeFlags.FormMultiPart)
|| !isForm && !isFormMultiPart && (asyncPreloadMode & AsyncPreloadModeFlags.NonForm) != AsyncPreloadModeFlags.NonForm
) {
Debug.Trace("AsyncPreload", " *** AsyncPreload skipped *** ");
httpAsyncResult.Complete(true, null, null);
return httpAsyncResult;
}
Debug.Trace("AsyncPreload", " *** AsyncPreload started *** ");
try {
if (_callback == null) {
_callback = new AsyncCallback(OnAsyncCompletion);
}
_inputStream = request.GetBufferedInputStream();
byte[] buffer = _app.EntityBuffer;
int bytesRead = 0;
// loop to prevent recursive calls and potential stack overflow if/when it completes synchronously
do {
IAsyncResult readAsyncResult = _inputStream.BeginRead(buffer, 0, buffer.Length, _callback, httpAsyncResult);
if (!readAsyncResult.CompletedSynchronously) {
return httpAsyncResult;
}
bytesRead = _inputStream.EndRead(readAsyncResult);
} while (bytesRead != 0);
}
catch {
Reset();
throw;
}
httpAsyncResult.Complete(true, null, null);
return httpAsyncResult;
}
IAsyncResult OnBeginAcquireState (object o, EventArgs args, AsyncCallback cb, object data)
{
HttpApplication application = (HttpApplication) o;
HttpContext context = application.Context;
bool required = (context.Handler is IRequiresSessionState);
// This is a hack. Sites that use Session in global.asax event handling code
// are not supposed to get a Session object for static files, but seems that
// IIS handles those files before getting there and thus they are served without
// error.
// As a workaround, setting MONO_XSP_STATIC_SESSION variable make this work
// on mono, but you lose performance when serving static files.
if (sessionForStaticFiles && context.Handler is StaticFileHandler)
required = true;
// hack end
bool read_only = (context.Handler is IReadOnlySessionState);
bool isNew = false;
HttpSessionState session = null;
if (handler != null)
session = handler.UpdateContext (context, this, required, read_only, ref isNew);
if (session != null) {
if (isNew)
session.SetNewSession (true);
if (read_only)
session = session.Clone ();
context.SetSession (session);
if (isNew && config.CookieLess) {
string id = context.Session.SessionID;
context.Request.SetHeader (HeaderName, id);
context.Response.Redirect (UrlUtils.InsertSessionId (id,
context.Request.FilePath));
} else if (isNew) {
string id = context.Session.SessionID;
HttpCookie cookie = new HttpCookie (CookieName, id);
cookie.Path = UrlUtils.GetDirectory (context.Request.ApplicationPath);
context.Response.AppendCookie (cookie);
}
}
// In the future, we might want to move the Async stuff down to
// the interface level, if we're going to support other than
// InProc, we might actually want to do things async, now we
// simply fake it.
HttpAsyncResult result=new HttpAsyncResult (cb,this);
result.Complete (true, o, null);
if (isNew && Start != null)
Start (this, args);
return result;
}
IAsyncResult OnBeginRequestCache (object o, EventArgs args, AsyncCallback cb, object data)
{
HttpApplication app = (HttpApplication) o;
HttpContext context = app.Context;
string vary_key = context.Request.FilePath;
CachedVaryBy varyby = context.Cache [vary_key] as CachedVaryBy;
string key;
CachedRawResponse c;
if (varyby == null)
goto leave;
key = varyby.CreateKey (vary_key, context);
c = context.Cache [key] as CachedRawResponse;
if (c != null) {
context.Response.ClearContent ();
context.Response.BinaryWrite (c.GetData (), 0, c.ContentLength);
context.Response.ClearHeaders ();
c.DateHeader.Value = TimeUtil.ToUtcTimeString (DateTime.Now);
context.Response.SetCachedHeaders (c.Headers);
context.Response.StatusCode = c.StatusCode;
context.Response.StatusDescription = c.StatusDescription;
app.CompleteRequest ();
}
leave:
HttpAsyncResult result = new HttpAsyncResult (cb,this);
result.Complete (true, o, null);
return result;
}
IAsyncResult OnBeginUpdateCache (object o, EventArgs args, AsyncCallback cb, object data)
{
HttpApplication app = (HttpApplication) o;
HttpContext context = app.Context;
HttpAsyncResult result;
if (context.Response.IsCached && context.Response.StatusCode == 200 &&
!context.Trace.IsEnabled)
DoCacheInsert (context);
result = new HttpAsyncResult (cb, this);
result.Complete (true, o, null);
return result;
}
internal /*public*/ IAsyncResult BeginAspCompatExecution(AsyncCallback cb, object extraData) {
SynchronizationContextUtil.ValidateModeForAspCompat();
if (IsInAspCompatMode) {
// already in AspCompatMode -- execute synchronously
bool sync = true;
Exception error = _app.ExecuteStep(this, ref sync);
_ar = new HttpAsyncResult(cb, extraData, true, null, error);
_syncCaller = true;
}
else {
_ar = new HttpAsyncResult(cb, extraData);
_syncCaller = (cb == null);
_rootedThis = GCHandle.Alloc(this);
// send requests from the same session to the same STA thread
bool sharedActivity = (_sessionId != null);
int activityHash = sharedActivity ? _sessionId.GetHashCode() : 0;
if (UnsafeNativeMethods.AspCompatProcessRequest(_execCallback, this, sharedActivity, activityHash) != 1) {
// failed to queue up the execution in ASP compat mode
_rootedThis.Free();
_ar.Complete(true, null, new HttpException(SR.GetString(SR.Cannot_access_AspCompat)));
}
}
return _ar;
}
private IAsyncResult OnEnter(Object sender, EventArgs e, AsyncCallback cb, Object state)
{
Debug.Assert(_inputStream == null);
_app = (HttpApplication)sender;
HttpContext context = _app.Context;
HttpRequest request = context.Request;
HttpWorkerRequest wr = context.WorkerRequest;
HttpAsyncResult httpAsyncResult = new HttpAsyncResult(cb, state);
AsyncPreloadModeFlags asyncPreloadMode = context.AsyncPreloadMode;
int contentLength;
bool isForm = false;
bool isFormMultiPart = false;
if (asyncPreloadMode == AsyncPreloadModeFlags.None ||
request.ReadEntityBodyMode != ReadEntityBodyMode.None ||
wr == null ||
!wr.SupportsAsyncRead ||
!wr.HasEntityBody() ||
wr.IsEntireEntityBodyIsPreloaded() ||
context.Handler == null ||
context.Handler is TransferRequestHandler ||
context.Handler is DefaultHttpHandler ||
(contentLength = request.ContentLength) > RuntimeConfig.GetConfig(context).HttpRuntime.MaxRequestLengthBytes ||
((isForm = StringUtil.StringStartsWithIgnoreCase(request.ContentType, "application/x-www-form-urlencoded")) &&
(asyncPreloadMode & AsyncPreloadModeFlags.Form) != AsyncPreloadModeFlags.Form) ||
((isFormMultiPart = StringUtil.StringStartsWithIgnoreCase(request.ContentType, "multipart/form-data")) &&
(asyncPreloadMode & AsyncPreloadModeFlags.FormMultiPart) != AsyncPreloadModeFlags.FormMultiPart) ||
!isForm && !isFormMultiPart && (asyncPreloadMode & AsyncPreloadModeFlags.NonForm) != AsyncPreloadModeFlags.NonForm
)
{
Debug.Trace("AsyncPreload", " *** AsyncPreload skipped *** ");
httpAsyncResult.Complete(true, null, null);
return(httpAsyncResult);
}
Debug.Trace("AsyncPreload", " *** AsyncPreload started *** ");
try {
if (_callback == null)
{
_callback = new AsyncCallback(OnAsyncCompletion);
}
_inputStream = request.GetBufferedInputStream();
byte[] buffer = _app.EntityBuffer;
int bytesRead = 0;
// loop to prevent recursive calls and potential stack overflow if/when it completes synchronously
do
{
IAsyncResult readAsyncResult = _inputStream.BeginRead(buffer, 0, buffer.Length, _callback, httpAsyncResult);
if (!readAsyncResult.CompletedSynchronously)
{
return(httpAsyncResult);
}
bytesRead = _inputStream.EndRead(readAsyncResult);
} while (bytesRead != 0);
}
catch {
Reset();
throw;
}
httpAsyncResult.Complete(true, null, null);
return(httpAsyncResult);
}
