Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataWeb / Client / System / Data / Services / Client / GetReadStreamResult.cs / 1305376 / GetReadStreamResult.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // //// Implementation of IAsyncResult for GetReadStream operation. // //--------------------------------------------------------------------- namespace System.Data.Services.Client { using System.Diagnostics; #if !ASTORIA_LIGHT using System.Net; #else // Data.Services http stack using System.Data.Services.Http; #endif ////// Class which implements the internal class GetReadStreamResult : BaseAsyncResult { ///for the GetReadStream operation. /// Note that this effectively behaves as a simple wrapper around the IAsyncResult returned /// by the underlying HttpWebRequest, although it's implemented fully on our own to get the same /// behavior as other IAsyncResult objects returned by the client library. /// The web request this class wraps (effectively) private readonly HttpWebRequest request; ///The web response once we get it. private HttpWebResponse response; ////// Constructs a new async result object /// /// The source of the operation. /// Name of the method which is invoked asynchronously. /// Theobject which is wrapped by this async result. /// User specified callback for the async operation. /// User state for the async callback. internal GetReadStreamResult( object source, string method, HttpWebRequest request, AsyncCallback callback, object state) : base(source, method, callback, state) { Debug.Assert(request != null, "Null request can't be wrapped to a result."); this.request = request; this.Abortable = request; } /// /// Begins the async request /// internal void Begin() { try { IAsyncResult asyncResult; asyncResult = BaseAsyncResult.InvokeAsync(this.request.BeginGetResponse, GetReadStreamResult.AsyncEndGetResponse, this); this.CompletedSynchronously &= asyncResult.CompletedSynchronously; } catch (Exception e) { this.HandleFailure(e); throw; } finally { this.HandleCompleted(); } Debug.Assert(!this.CompletedSynchronously || this.IsCompleted, "if CompletedSynchronously then MUST IsCompleted"); } ////// Ends the request and creates the response object. /// ///The response object for this request. internal DataServiceStreamResponse End() { if (this.response != null) { DataServiceStreamResponse streamResponse = new DataServiceStreamResponse(this.response); return streamResponse; } else { return null; } } #if !ASTORIA_LIGHT ////// Executes the request synchronously. /// ///The response object for this request. internal DataServiceStreamResponse Execute() { try { System.Net.HttpWebResponse webresponse = null; try { webresponse = (System.Net.HttpWebResponse)this.request.GetResponse(); } catch (System.Net.WebException ex) { webresponse = (System.Net.HttpWebResponse)ex.Response; if (null == webresponse) { throw; } } this.SetHttpWebResponse(webresponse); } catch (Exception e) { this.HandleFailure(e); throw; } finally { this.SetCompleted(); this.CompletedRequest(); } if (null != this.Failure) { throw this.Failure; } return this.End(); } #endif ///invoked for derived classes to cleanup before callback is invoked protected override void CompletedRequest() { Debug.Assert(null != this.response || null != this.Failure, "should have response or exception"); if (null != this.response) { // Can't use DataServiceContext.HandleResponse as this request didn't necessarily go to our server // the MR could have been served by arbitrary server. InvalidOperationException failure = null; if (!WebUtil.SuccessStatusCode(this.response.StatusCode)) { failure = DataServiceContext.GetResponseText(this.response.GetResponseStream, this.response.StatusCode); } if (failure != null) { // we've cached off what we need, headers still accessible after close this.response.Close(); this.HandleFailure(failure); } } } ////// Async callback registered with the underlying HttpWebRequest object. /// /// The async result associated with the HttpWebRequest operation. private static void AsyncEndGetResponse(IAsyncResult asyncResult) { GetReadStreamResult state = asyncResult.AsyncState as GetReadStreamResult; Debug.Assert(state != null, "Async callback got called for different request."); try { state.CompletedSynchronously &= asyncResult.CompletedSynchronously; // BeginGetResponse HttpWebRequest request = Util.NullCheck(state.request, InternalError.InvalidEndGetResponseRequest); HttpWebResponse webresponse = null; try { webresponse = (HttpWebResponse)request.EndGetResponse(asyncResult); } catch (WebException e) { webresponse = (HttpWebResponse)e.Response; if (null == webresponse) { throw; } } state.SetHttpWebResponse(webresponse); state.SetCompleted(); } catch (Exception e) { if (state.HandleFailure(e)) { throw; } } finally { state.HandleCompleted(); } } ////// Sets the response when received from the underlying HttpWebRequest /// /// The response recieved. private void SetHttpWebResponse(HttpWebResponse webResponse) { Debug.Assert(webResponse != null, "Can't set a null response."); this.response = webResponse; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // //// Implementation of IAsyncResult for GetReadStream operation. // //--------------------------------------------------------------------- namespace System.Data.Services.Client { using System.Diagnostics; #if !ASTORIA_LIGHT using System.Net; #else // Data.Services http stack using System.Data.Services.Http; #endif ////// Class which implements the internal class GetReadStreamResult : BaseAsyncResult { ///for the GetReadStream operation. /// Note that this effectively behaves as a simple wrapper around the IAsyncResult returned /// by the underlying HttpWebRequest, although it's implemented fully on our own to get the same /// behavior as other IAsyncResult objects returned by the client library. /// The web request this class wraps (effectively) private readonly HttpWebRequest request; ///The web response once we get it. private HttpWebResponse response; ////// Constructs a new async result object /// /// The source of the operation. /// Name of the method which is invoked asynchronously. /// Theobject which is wrapped by this async result. /// User specified callback for the async operation. /// User state for the async callback. internal GetReadStreamResult( object source, string method, HttpWebRequest request, AsyncCallback callback, object state) : base(source, method, callback, state) { Debug.Assert(request != null, "Null request can't be wrapped to a result."); this.request = request; this.Abortable = request; } /// /// Begins the async request /// internal void Begin() { try { IAsyncResult asyncResult; asyncResult = BaseAsyncResult.InvokeAsync(this.request.BeginGetResponse, GetReadStreamResult.AsyncEndGetResponse, this); this.CompletedSynchronously &= asyncResult.CompletedSynchronously; } catch (Exception e) { this.HandleFailure(e); throw; } finally { this.HandleCompleted(); } Debug.Assert(!this.CompletedSynchronously || this.IsCompleted, "if CompletedSynchronously then MUST IsCompleted"); } ////// Ends the request and creates the response object. /// ///The response object for this request. internal DataServiceStreamResponse End() { if (this.response != null) { DataServiceStreamResponse streamResponse = new DataServiceStreamResponse(this.response); return streamResponse; } else { return null; } } #if !ASTORIA_LIGHT ////// Executes the request synchronously. /// ///The response object for this request. internal DataServiceStreamResponse Execute() { try { System.Net.HttpWebResponse webresponse = null; try { webresponse = (System.Net.HttpWebResponse)this.request.GetResponse(); } catch (System.Net.WebException ex) { webresponse = (System.Net.HttpWebResponse)ex.Response; if (null == webresponse) { throw; } } this.SetHttpWebResponse(webresponse); } catch (Exception e) { this.HandleFailure(e); throw; } finally { this.SetCompleted(); this.CompletedRequest(); } if (null != this.Failure) { throw this.Failure; } return this.End(); } #endif ///invoked for derived classes to cleanup before callback is invoked protected override void CompletedRequest() { Debug.Assert(null != this.response || null != this.Failure, "should have response or exception"); if (null != this.response) { // Can't use DataServiceContext.HandleResponse as this request didn't necessarily go to our server // the MR could have been served by arbitrary server. InvalidOperationException failure = null; if (!WebUtil.SuccessStatusCode(this.response.StatusCode)) { failure = DataServiceContext.GetResponseText(this.response.GetResponseStream, this.response.StatusCode); } if (failure != null) { // we've cached off what we need, headers still accessible after close this.response.Close(); this.HandleFailure(failure); } } } ////// Async callback registered with the underlying HttpWebRequest object. /// /// The async result associated with the HttpWebRequest operation. private static void AsyncEndGetResponse(IAsyncResult asyncResult) { GetReadStreamResult state = asyncResult.AsyncState as GetReadStreamResult; Debug.Assert(state != null, "Async callback got called for different request."); try { state.CompletedSynchronously &= asyncResult.CompletedSynchronously; // BeginGetResponse HttpWebRequest request = Util.NullCheck(state.request, InternalError.InvalidEndGetResponseRequest); HttpWebResponse webresponse = null; try { webresponse = (HttpWebResponse)request.EndGetResponse(asyncResult); } catch (WebException e) { webresponse = (HttpWebResponse)e.Response; if (null == webresponse) { throw; } } state.SetHttpWebResponse(webresponse); state.SetCompleted(); } catch (Exception e) { if (state.HandleFailure(e)) { throw; } } finally { state.HandleCompleted(); } } ////// Sets the response when received from the underlying HttpWebRequest /// /// The response recieved. private void SetHttpWebResponse(HttpWebResponse webResponse) { Debug.Assert(webResponse != null, "Can't set a null response."); this.response = webResponse; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- SwitchDesigner.xaml.cs
- StringInfo.cs
- Profiler.cs
- BasicCellRelation.cs
- TimeSpanValidatorAttribute.cs
- ApplicationDirectory.cs
- TemplateParser.cs
- DataFieldEditor.cs
- FrameDimension.cs
- DecoderReplacementFallback.cs
- TaskSchedulerException.cs
- XmlSchemaExporter.cs
- GeometryValueSerializer.cs
- ScriptControlDescriptor.cs
- SingleKeyFrameCollection.cs
- PropertyCollection.cs
- FormViewPagerRow.cs
- ImageFormat.cs
- SizeValueSerializer.cs
- SqlLiftWhereClauses.cs
- RefreshResponseInfo.cs
- updatecommandorderer.cs
- BindingBase.cs
- PartialTrustVisibleAssembliesSection.cs
- DocumentCollection.cs
- XmlHierarchicalEnumerable.cs
- DbgUtil.cs
- ApplicationManager.cs
- StackBuilderSink.cs
- MarshalByRefObject.cs
- TraceShell.cs
- FutureFactory.cs
- BitSet.cs
- ToolStripDropDownDesigner.cs
- RuntimeHandles.cs
- CustomLineCap.cs
- TextReader.cs
- TransformCollection.cs
- GlyphTypeface.cs
- RenderCapability.cs
- FormView.cs
- ProxyElement.cs
- WebConfigurationManager.cs
- XPathException.cs
- DropAnimation.xaml.cs
- ListGeneralPage.cs
- CurrentChangingEventManager.cs
- SerializationObjectManager.cs
- Pts.cs
- DetailsViewRow.cs
- UidManager.cs
- SchemaLookupTable.cs
- AcceleratedTokenProviderState.cs
- MemberAccessException.cs
- BitHelper.cs
- ZoneMembershipCondition.cs
- AutomationElementIdentifiers.cs
- EventLogPermissionEntry.cs
- EndOfStreamException.cs
- RoleGroup.cs
- SortQuery.cs
- VisualTarget.cs
- MD5CryptoServiceProvider.cs
- ExecutedRoutedEventArgs.cs
- FrameDimension.cs
- AttachedAnnotationChangedEventArgs.cs
- CancelEventArgs.cs
- Assert.cs
- AlignmentYValidation.cs
- ArgumentReference.cs
- PhysicalFontFamily.cs
- FlowSwitch.cs
- URLMembershipCondition.cs
- EntitySetDataBindingList.cs
- AssemblyAssociatedContentFileAttribute.cs
- ConcurrentStack.cs
- CodeDomSerializer.cs
- PropertyCondition.cs
- DotAtomReader.cs
- ChtmlCommandAdapter.cs
- PropertyKey.cs
- ClientConfigPaths.cs
- ExpressionBuilderContext.cs
- CustomLineCap.cs
- Int32Converter.cs
- basemetadatamappingvisitor.cs
- ReadOnlyKeyedCollection.cs
- Image.cs
- GestureRecognitionResult.cs
- WebPartCatalogCloseVerb.cs
- OneWayChannelListener.cs
- NativeMethods.cs
- XmlSchemaExternal.cs
- DataGridViewButtonCell.cs
- JournalEntryListConverter.cs
- SmiConnection.cs
- GACIdentityPermission.cs
- TagNameToTypeMapper.cs
- ValueHandle.cs
- DropAnimation.xaml.cs