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winconfig.h
231 lines
7.3 KiB
C#
231 lines
7.3 KiB
C#
// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
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using System.Threading;
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using Moq;
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using Xunit;
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using Assert = Microsoft.TestCommon.AssertEx;
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namespace System.Web.Mvc.Async.Test
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{
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public class AsyncResultWrapperTest
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{
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[Fact]
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public void Begin_AsynchronousCompletion()
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{
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// Arrange
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AsyncCallback capturedCallback = null;
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IAsyncResult resultGivenToCallback = null;
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IAsyncResult innerResult = new MockAsyncResult();
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// Act
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IAsyncResult outerResult = AsyncResultWrapper.Begin(
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ar => { resultGivenToCallback = ar; },
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null,
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(callback, state) =>
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{
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capturedCallback = callback;
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return innerResult;
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},
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ar => { });
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capturedCallback(innerResult);
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// Assert
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Assert.Equal(outerResult, resultGivenToCallback);
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}
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[Fact]
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public void Begin_ReturnsAsyncResultWhichWrapsInnerResult()
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{
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// Arrange
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IAsyncResult innerResult = new MockAsyncResult()
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{
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AsyncState = "inner state",
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CompletedSynchronously = true,
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IsCompleted = true
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};
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// Act
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IAsyncResult outerResult = AsyncResultWrapper.Begin(
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null, "outer state",
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(callback, state) => innerResult,
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ar => { });
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// Assert
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Assert.Equal(innerResult.AsyncState, outerResult.AsyncState);
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Assert.Equal(innerResult.AsyncWaitHandle, outerResult.AsyncWaitHandle);
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Assert.Equal(innerResult.CompletedSynchronously, outerResult.CompletedSynchronously);
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Assert.Equal(innerResult.IsCompleted, outerResult.IsCompleted);
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}
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[Fact]
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public void Begin_SynchronousCompletion()
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{
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// Arrange
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IAsyncResult resultGivenToCallback = null;
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IAsyncResult innerResult = new MockAsyncResult();
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// Act
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IAsyncResult outerResult = AsyncResultWrapper.Begin(
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ar => { resultGivenToCallback = ar; },
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null,
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(callback, state) =>
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{
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callback(innerResult);
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return innerResult;
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},
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ar => { });
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// Assert
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Assert.Equal(outerResult, resultGivenToCallback);
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}
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[Fact]
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public void Begin_AsynchronousButAlreadyCompleted()
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{
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// Arrange
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Mock<IAsyncResult> innerResultMock = new Mock<IAsyncResult>();
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innerResultMock.Setup(ir => ir.CompletedSynchronously).Returns(false);
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innerResultMock.Setup(ir => ir.IsCompleted).Returns(true);
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// Act
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IAsyncResult outerResult = AsyncResultWrapper.Begin(
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null,
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null,
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(callback, state) =>
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{
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callback(innerResultMock.Object);
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return innerResultMock.Object;
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},
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ar => { });
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// Assert
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Assert.True(outerResult.CompletedSynchronously);
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}
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[Fact]
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public void BeginSynchronous_Action()
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{
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// Arrange
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bool actionCalled = false;
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// Act
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IAsyncResult asyncResult = AsyncResultWrapper.BeginSynchronous(null, null, delegate { actionCalled = true; });
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AsyncResultWrapper.End(asyncResult);
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// Assert
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Assert.True(actionCalled);
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Assert.True(asyncResult.IsCompleted);
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Assert.True(asyncResult.CompletedSynchronously);
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}
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[Fact]
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public void BeginSynchronous_Func()
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{
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// Act
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IAsyncResult asyncResult = AsyncResultWrapper.BeginSynchronous(null, null, () => 42);
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int retVal = AsyncResultWrapper.End<int>(asyncResult);
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// Assert
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Assert.Equal(42, retVal);
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Assert.True(asyncResult.IsCompleted);
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Assert.True(asyncResult.CompletedSynchronously);
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}
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[Fact]
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public void End_ExecutesStoredDelegateAndReturnsValue()
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{
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// Arrange
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IAsyncResult asyncResult = AsyncResultWrapper.Begin(
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null, null,
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(callback, state) => new MockAsyncResult(),
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ar => 42);
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// Act
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int returned = AsyncResultWrapper.End<int>(asyncResult);
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// Assert
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Assert.Equal(42, returned);
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}
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[Fact]
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public void End_ThrowsIfAsyncResultIsIncorrectType()
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{
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// Arrange
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IAsyncResult asyncResult = AsyncResultWrapper.Begin(
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null, null,
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(callback, state) => new MockAsyncResult(),
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ar => { });
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// Act & assert
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Assert.Throws<ArgumentException>(
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delegate { AsyncResultWrapper.End<int>(asyncResult); },
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@"The provided IAsyncResult is not valid for this method.
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Parameter name: asyncResult");
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}
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[Fact]
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public void End_ThrowsIfAsyncResultIsNull()
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{
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// Act & assert
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Assert.ThrowsArgumentNull(
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delegate { AsyncResultWrapper.End(null); }, "asyncResult");
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}
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[Fact]
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public void End_ThrowsIfAsyncResultTagMismatch()
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{
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// Arrange
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IAsyncResult asyncResult = AsyncResultWrapper.Begin(
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null, null,
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(callback, state) => new MockAsyncResult(),
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ar => { },
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"some tag");
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// Act & assert
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Assert.Throws<ArgumentException>(
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delegate { AsyncResultWrapper.End(asyncResult, "some other tag"); },
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@"The provided IAsyncResult is not valid for this method.
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Parameter name: asyncResult");
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}
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[Fact]
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public void End_ThrowsIfCalledTwiceOnSameAsyncResult()
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{
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// Arrange
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IAsyncResult asyncResult = AsyncResultWrapper.Begin(
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null, null,
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(callback, state) => new MockAsyncResult(),
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ar => { });
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// Act & assert
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AsyncResultWrapper.End(asyncResult);
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Assert.Throws<InvalidOperationException>(
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delegate { AsyncResultWrapper.End(asyncResult); },
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@"The provided IAsyncResult has already been consumed.");
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}
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[Fact]
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public void TimedOut()
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{
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// Arrange
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ManualResetEvent waitHandle = new ManualResetEvent(false /* initialState */);
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AsyncCallback callback = ar => { waitHandle.Set(); };
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// Act & assert
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IAsyncResult asyncResult = AsyncResultWrapper.Begin(
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callback, null,
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(innerCallback, innerState) => new MockAsyncResult(),
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ar => { Assert.True(false, "This callback should never execute since we timed out."); },
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null, 0);
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// wait for the timeout
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waitHandle.WaitOne();
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Assert.Throws<TimeoutException>(
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delegate { AsyncResultWrapper.End(asyncResult); });
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}
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}
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}
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