public override async Task <HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
{
if (_preAuthenticate)
{
TrySetBasicAuthToken(request);
}
HttpResponseMessage response = await _innerHandler.SendAsync(request, cancellationToken).ConfigureAwait(false);
if (!_preAuthenticate && response.StatusCode == HttpStatusCode.Unauthorized)
{
HttpHeaderValueCollection <AuthenticationHeaderValue> authenticateValues = response.Headers.WwwAuthenticate;
foreach (AuthenticationHeaderValue h in authenticateValues)
{
// We only support Basic auth, ignore others
if (h.Scheme == Basic)
{
if (!TrySetBasicAuthToken(request))
{
break;
}
response.Dispose();
response = await _innerHandler.SendAsync(request, cancellationToken).ConfigureAwait(false);
break;
}
}
}
return(response);
}
public override async Task <HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
{
// Add cookies to request, if any
string cookieHeader = _cookieContainer.GetCookieHeader(request.RequestUri);
if (!string.IsNullOrEmpty(cookieHeader))
{
request.Headers.Add(HttpKnownHeaderNames.Cookie, cookieHeader);
}
HttpResponseMessage response = await _innerHandler.SendAsync(request, cancellationToken).ConfigureAwait(false);
// Handle Set-Cookie
IEnumerable <string> setCookies;
if (response.Headers.TryGetValues(HttpKnownHeaderNames.SetCookie, out setCookies))
{
foreach (string setCookie in setCookies)
{
_cookieContainer.SetCookies(response.RequestMessage.RequestUri, setCookie);
}
}
return(response);
}
public async Task SendAsync_DelegatesToInnerHandler()
{
// Arrange
HttpRequestMessage request = null;
var cancellationToken = default(CancellationToken);
HttpMessageHandler innerHandler = new LambdaHttpMessageHandler(
(r, c) =>
{
request = r;
cancellationToken = c;
return(Task.FromResult <HttpResponseMessage>(null));
}
);
HttpMessageHandler handler = CreateProductUnderTest(innerHandler);
var expectedCancellationToken = new CancellationToken(true);
using (var expectedRequest = CreateRequestWithContext())
{
// Act
var result = await handler.SendAsync(expectedRequest, expectedCancellationToken);
// Assert
Assert.Same(expectedRequest, request);
Assert.Equal(expectedCancellationToken, cancellationToken);
Assert.Null(result);
}
}
public async Task SendAsync_IfExceptionHandlerHandlesException_ReturnsResponse()
{
// Arrange
IExceptionLogger exceptionLogger = CreateStubExceptionLogger();
using (HttpResponseMessage expectedResponse = CreateResponse())
{
Mock <IExceptionHandler> exceptionHandlerMock = new Mock <IExceptionHandler>(MockBehavior.Strict);
exceptionHandlerMock
.Setup(h => h.HandleAsync(It.IsAny <ExceptionHandlerContext>(), It.IsAny <CancellationToken>()))
.Callback <ExceptionHandlerContext, CancellationToken>((c, i) =>
c.Result = new ResponseMessageResult(expectedResponse))
.Returns(Task.FromResult(0));
IExceptionHandler exceptionHandler = exceptionHandlerMock.Object;
using (HttpRequestMessage request = CreateRequestWithRouteData())
using (HttpConfiguration configuration = new HttpConfiguration())
using (HttpMessageHandler product = CreateProductUnderTest(configuration, exceptionLogger,
exceptionHandler))
{
configuration.Services.Replace(typeof(IHttpControllerSelector),
CreateThrowingControllerSelector(CreateException()));
CancellationToken cancellationToken = CreateCancellationToken();
// Act
HttpResponseMessage response = await product.SendAsync(request, cancellationToken);
// Assert
Assert.Same(expectedResponse, response);
}
}
}
public void SendAsync_SetsCurrentPrincipalToAnonymous_BeforeCallingInnerHandler()
{
// Arrange
IPrincipal principalServiceCurrentPrincipal = null;
IHostPrincipalService principalService = CreateSpyPrincipalService((p) =>
{
principalServiceCurrentPrincipal = p;
});
IPrincipal principalBeforeInnerHandler = null;
HttpMessageHandler inner = new LambdaHttpMessageHandler((ignore1, ignore2) =>
{
principalBeforeInnerHandler = principalServiceCurrentPrincipal;
return(Task.FromResult <HttpResponseMessage>(null));
});
HttpMessageHandler handler = CreateProductUnderTest(principalService, inner);
using (HttpRequestMessage request = new HttpRequestMessage())
{
// Act
handler.SendAsync(request, CancellationToken.None);
}
// Assert
Assert.NotNull(principalBeforeInnerHandler);
IIdentity identity = principalBeforeInnerHandler.Identity;
Assert.NotNull(identity);
Assert.False(identity.IsAuthenticated);
Assert.Null(identity.Name);
Assert.Null(identity.AuthenticationType);
}
public void SendAsync_DelegatesToInnerHandler()
{
// Arrange
IHostPrincipalService principalService = CreateStubPrincipalService();
HttpRequestMessage request = null;
CancellationToken cancellationToken = default(CancellationToken);
Task <HttpResponseMessage> expectedResult = new Task <HttpResponseMessage>(() => null);
HttpMessageHandler innerHandler = new LambdaHttpMessageHandler((r, c) =>
{
request = r;
cancellationToken = c;
return(expectedResult);
});
HttpMessageHandler handler = CreateProductUnderTest(principalService, innerHandler);
CancellationToken expectedCancellationToken = new CancellationToken(true);
using (HttpRequestMessage expectedRequest = new HttpRequestMessage())
{
// Act
Task <HttpResponseMessage> result = handler.SendAsync(expectedRequest, expectedCancellationToken);
// Assert
Assert.Same(expectedRequest, request);
Assert.Equal(expectedCancellationToken, cancellationToken);
Assert.Same(expectedResult, result);
}
}
public void SendAsync_LeavesAuthenticationChallenges_WhenExistingAuthenticationTypesIsNonEmpty()
{
// Arrange
IHostPrincipalService principalService = CreateStubPrincipalService();
HttpMessageHandler inner = CreateStubHandler();
HttpMessageHandler handler = CreateProductUnderTest(principalService, inner);
IOwinContext context = CreateOwinContext();
IAuthenticationManager authenticationManager = context.Authentication;
AuthenticationProperties extraWrapper = new AuthenticationProperties();
string[] expectedAuthenticationTypes = new string[] { "Existing" };
IDictionary <string, string> expectedExtra = extraWrapper.Dictionary;
authenticationManager.AuthenticationResponseChallenge = new AuthenticationResponseChallenge(
expectedAuthenticationTypes, extraWrapper);
using (HttpRequestMessage request = CreateRequestWithOwinContext(context))
{
// Act
HttpResponseMessage ignore = handler.SendAsync(request, CancellationToken.None).Result;
}
// Assert
AuthenticationResponseChallenge challenge = authenticationManager.AuthenticationResponseChallenge;
Assert.NotNull(challenge);
Assert.Same(expectedAuthenticationTypes, challenge.AuthenticationTypes);
AuthenticationProperties actualExtraWrapper = challenge.Properties;
Assert.NotNull(actualExtraWrapper);
Assert.Same(expectedExtra, actualExtraWrapper.Dictionary);
}
public void SendAsync_DelegatesToInnerHandler()
{
// Arrange
IHostPrincipalService principalService = CreateStubPrincipalService();
HttpRequestMessage request = null;
CancellationToken cancellationToken = default(CancellationToken);
IOwinContext context = CreateOwinContext();
using (HttpResponseMessage expectedResponse = new HttpResponseMessage())
{
HttpMessageHandler innerHandler = new LambdaHttpMessageHandler((r, c) =>
{
request = r;
cancellationToken = c;
return(Task.FromResult(expectedResponse));
});
HttpMessageHandler handler = CreateProductUnderTest(principalService, innerHandler);
CancellationToken expectedCancellationToken = new CancellationToken(true);
using (HttpRequestMessage expectedRequest = CreateRequestWithOwinContext(context))
{
// Act
HttpResponseMessage response = handler.SendAsync(expectedRequest,
expectedCancellationToken).Result;
// Assert
Assert.Same(expectedRequest, request);
Assert.Equal(expectedCancellationToken, cancellationToken);
Assert.Same(expectedResponse, response);
}
}
}
public void SendAsync_SetsCurrentPrincipalToAnonymous_BeforeCallingInnerHandler()
{
// Arrange
IPrincipal requestContextPrincipal = null;
Mock <HttpRequestContext> requestContextMock = new Mock <HttpRequestContext>();
requestContextMock
.SetupSet(c => c.Principal = It.IsAny <IPrincipal>())
.Callback <IPrincipal>((value) => requestContextPrincipal = value);
IPrincipal principalBeforeInnerHandler = null;
HttpMessageHandler inner = new LambdaHttpMessageHandler((ignore1, ignore2) =>
{
principalBeforeInnerHandler = requestContextPrincipal;
return(Task.FromResult <HttpResponseMessage>(null));
});
HttpMessageHandler handler = CreateProductUnderTest(inner);
using (HttpRequestMessage request = new HttpRequestMessage())
{
request.SetRequestContext(requestContextMock.Object);
// Act
handler.SendAsync(request, CancellationToken.None);
}
// Assert
Assert.NotNull(principalBeforeInnerHandler);
IIdentity identity = principalBeforeInnerHandler.Identity;
Assert.NotNull(identity);
Assert.False(identity.IsAuthenticated);
Assert.Null(identity.Name);
Assert.Null(identity.AuthenticationType);
}
public void SendAsync_SuppressesAuthenticationChallenges_WhenNoChallengeIsSet()
{
// Arrange
IHostPrincipalService principalService = CreateStubPrincipalService();
HttpMessageHandler inner = CreateStubHandler();
HttpMessageHandler handler = CreateProductUnderTest(principalService, inner);
IOwinContext context = CreateOwinContext();
using (HttpRequestMessage request = CreateRequestWithOwinContext(context))
{
// Act
HttpResponseMessage ignore = handler.SendAsync(request, CancellationToken.None).Result;
}
// Assert
IAuthenticationManager authenticationManager = context.Authentication;
AuthenticationResponseChallenge challenge = authenticationManager.AuthenticationResponseChallenge;
Assert.NotNull(challenge);
string[] authenticationTypes = challenge.AuthenticationTypes;
Assert.NotNull(authenticationTypes);
Assert.Equal(1, authenticationTypes.Length);
string authenticationType = authenticationTypes[0];
Assert.Null(authenticationType);
}
public async Task SendAsync_SuppressesAuthenticationChallenges_WhenNoChallengeIsSet()
{
// Arrange
HttpMessageHandler inner = CreateStubHandler();
HttpMessageHandler handler = CreateProductUnderTest(inner);
IOwinContext context = CreateOwinContext();
using (
HttpRequestMessage request = CreateRequestWithOwinContextAndRequestContext(context)
)
{
// Act
HttpResponseMessage ignore = await handler.SendAsync(
request,
CancellationToken.None
);
}
// Assert
IAuthenticationManager authenticationManager = context.Authentication;
AuthenticationResponseChallenge challenge =
authenticationManager.AuthenticationResponseChallenge;
Assert.NotNull(challenge);
string[] authenticationTypes = challenge.AuthenticationTypes;
Assert.NotNull(authenticationTypes);
string authenticationType = Assert.Single(authenticationTypes);
Assert.Null(authenticationType);
}
public async Task SendAsync_IfSendAsyncCancels_InControllerSelector_DoesNotCallExceptionServices()
{
// Arrange
Exception expectedException = new OperationCanceledException();
Mock <IExceptionLogger> exceptionLoggerMock = new Mock <IExceptionLogger>(MockBehavior.Strict);
IExceptionLogger exceptionLogger = exceptionLoggerMock.Object;
Mock <IExceptionHandler> exceptionHandlerMock = new Mock <IExceptionHandler>(MockBehavior.Strict);
IExceptionHandler exceptionHandler = exceptionHandlerMock.Object;
using (HttpRequestMessage expectedRequest = CreateRequestWithRouteData())
using (HttpConfiguration configuration = CreateConfiguration())
using (HttpMessageHandler product = CreateProductUnderTest(configuration, exceptionLogger,
exceptionHandler))
{
configuration.Services.Replace(typeof(IHttpControllerSelector),
CreateThrowingControllerSelector(expectedException));
CancellationToken cancellationToken = CreateCancellationToken();
// Act & Assert
await Assert.ThrowsAsync <OperationCanceledException>(() => product.SendAsync(expectedRequest, cancellationToken));
}
}
public async Task SendAsync_SuppressesAuthenticationChallenges_WhenExistingAuthenticationTypesIsEmpty()
{
// Arrange
HttpMessageHandler inner = CreateStubHandler();
HttpMessageHandler handler = CreateProductUnderTest(inner);
IOwinContext context = CreateOwinContext();
IAuthenticationManager authenticationManager = context.Authentication;
AuthenticationProperties extraWrapper = new AuthenticationProperties();
IDictionary <string, string> expectedExtra = extraWrapper.Dictionary;
authenticationManager.AuthenticationResponseChallenge = new AuthenticationResponseChallenge(new string[0],
extraWrapper);
using (HttpRequestMessage request = CreateRequestWithOwinContextAndRequestContext(context))
{
// Act
HttpResponseMessage ignore = await handler.SendAsync(request, CancellationToken.None);
}
// Assert
AuthenticationResponseChallenge challenge = authenticationManager.AuthenticationResponseChallenge;
Assert.NotNull(challenge);
string[] authenticationTypes = challenge.AuthenticationTypes;
Assert.NotNull(authenticationTypes);
Assert.Equal(1, authenticationTypes.Length);
string authenticationType = authenticationTypes[0];
Assert.Null(authenticationType);
AuthenticationProperties actualExtraWrapper = challenge.Properties;
Assert.NotNull(actualExtraWrapper);
Assert.Same(expectedExtra, actualExtraWrapper.Dictionary);
}
public void SendAsync_IfSendAsyncCancels_InControllerSelector_DoesNotCallExceptionServices()
{
// Arrange
Exception expectedException = new OperationCanceledException();
Mock <IExceptionLogger> exceptionLoggerMock = new Mock <IExceptionLogger>(MockBehavior.Strict);
IExceptionLogger exceptionLogger = exceptionLoggerMock.Object;
Mock <IExceptionHandler> exceptionHandlerMock = new Mock <IExceptionHandler>(MockBehavior.Strict);
IExceptionHandler exceptionHandler = exceptionHandlerMock.Object;
using (HttpRequestMessage expectedRequest = CreateRequestWithRouteData())
using (HttpConfiguration configuration = CreateConfiguration())
using (HttpMessageHandler product = CreateProductUnderTest(configuration, exceptionLogger,
exceptionHandler))
{
configuration.Services.Replace(typeof(IHttpControllerSelector),
CreateThrowingControllerSelector(expectedException));
CancellationToken cancellationToken = CreateCancellationToken();
Task <HttpResponseMessage> task = product.SendAsync(expectedRequest, cancellationToken);
// Act
task.WaitUntilCompleted();
// Assert
Assert.Equal(TaskStatus.Canceled, task.Status);
}
}
public async Task SendAsync_IfExceptionHandlerSetsNullResult_PropogatesFaultedTaskException()
{
// Arrange
ExceptionDispatchInfo exceptionInfo = CreateExceptionInfo();
string expectedStackTrace = exceptionInfo.SourceException.StackTrace;
IExceptionLogger exceptionLogger = CreateStubExceptionLogger();
Mock <IExceptionHandler> exceptionHandlerMock = new Mock <IExceptionHandler>(MockBehavior.Strict);
exceptionHandlerMock
.Setup(h => h.HandleAsync(It.IsAny <ExceptionHandlerContext>(), It.IsAny <CancellationToken>()))
.Callback <ExceptionHandlerContext, CancellationToken>((c, i) => c.Result = null)
.Returns(Task.FromResult(0));
IExceptionHandler exceptionHandler = exceptionHandlerMock.Object;
using (HttpRequestMessage request = CreateRequestWithRouteData())
using (HttpConfiguration configuration = CreateConfiguration())
using (HttpMessageHandler product = CreateProductUnderTest(configuration, exceptionLogger,
exceptionHandler))
{
configuration.Services.Replace(typeof(IHttpControllerSelector),
CreateThrowingControllerSelector(exceptionInfo));
CancellationToken cancellationToken = CreateCancellationToken();
// Act & Assert
var exception = await Assert.ThrowsAsync <Exception>(() => product.SendAsync(request, cancellationToken));
Assert.Same(exceptionInfo.SourceException, exception);
Assert.NotNull(exception.StackTrace);
Assert.StartsWith(expectedStackTrace, exception.StackTrace);
}
}
public async Task SendAsync_IfSendAsyncThrows_Controller_CallsExceptionServices()
{
// Arrange
Exception expectedException = CreateException();
Mock <IExceptionLogger> exceptionLoggerMock = CreateStubExceptionLoggerMock();
IExceptionLogger exceptionLogger = exceptionLoggerMock.Object;
Mock <IExceptionHandler> exceptionHandlerMock = CreateStubExceptionHandlerMock();
IExceptionHandler exceptionHandler = exceptionHandlerMock.Object;
var controller = new ThrowingController(expectedException);
var controllerActivator = new Mock <IHttpControllerActivator>();
controllerActivator
.Setup(
activator => activator.Create(
It.IsAny <HttpRequestMessage>(),
It.IsAny <HttpControllerDescriptor>(),
It.IsAny <Type>()))
.Returns(controller);
using (HttpRequestMessage expectedRequest = CreateRequestWithRouteData())
using (HttpConfiguration configuration = CreateConfiguration())
using (HttpMessageHandler product = CreateProductUnderTest(configuration, exceptionLogger,
exceptionHandler))
{
var controllerSelector = new Mock <IHttpControllerSelector>(MockBehavior.Strict);
controllerSelector
.Setup(selector => selector.SelectController(It.IsAny <HttpRequestMessage>()))
.Returns(new HttpControllerDescriptor(configuration, "Throwing", controller.GetType()));
configuration.Services.Replace(typeof(IHttpControllerSelector), controllerSelector.Object);
configuration.Services.Replace(typeof(IHttpControllerActivator), controllerActivator.Object);
CancellationToken cancellationToken = CreateCancellationToken();
// Act
await Assert.ThrowsAsync <Exception>(() => product.SendAsync(expectedRequest, cancellationToken));
// Assert
Func <ExceptionContext, bool> exceptionContextMatches = (c) =>
c != null &&
c.Exception == expectedException &&
c.CatchBlock == ExceptionCatchBlocks.HttpControllerDispatcher &&
c.Request == expectedRequest &&
c.ControllerContext != null &&
c.ControllerContext == controller.ControllerContext &&
c.ControllerContext.Controller == controller;
exceptionLoggerMock.Verify(l => l.LogAsync(
It.Is <ExceptionLoggerContext>(c => exceptionContextMatches(c.ExceptionContext)),
cancellationToken), Times.Once());
exceptionHandlerMock.Verify(h => h.HandleAsync(
It.Is <ExceptionHandlerContext>((c) => exceptionContextMatches(c.ExceptionContext)),
cancellationToken), Times.Once());
}
}
public async Task SendAsync_SetsRequestContextPrincipalToAnonymous_BeforeCallingInnerHandler()
{
// Arrange
var requestContextMock = new Mock <HttpRequestContext>(MockBehavior.Strict);
var sequence = new MockSequence();
var initialPrincipal = new GenericPrincipal(
new GenericIdentity("generic user"),
new[] { "generic role" }
);
IPrincipal requestContextPrincipal = null;
requestContextMock
.InSequence(sequence)
.SetupGet(c => c.Principal)
.Returns(initialPrincipal);
requestContextMock
.InSequence(sequence)
.SetupSet(c => c.Principal = It.IsAny <IPrincipal>())
.Callback <IPrincipal>(value => requestContextPrincipal = value);
// SendAsync also restores the old principal.
requestContextMock
.InSequence(sequence)
.SetupGet(c => c.Principal)
.Returns(requestContextPrincipal);
requestContextMock.InSequence(sequence).SetupSet(c => c.Principal = initialPrincipal);
IPrincipal principalBeforeInnerHandler = null;
HttpMessageHandler inner = new LambdaHttpMessageHandler(
(ignore1, ignore2) =>
{
principalBeforeInnerHandler = requestContextPrincipal;
return(Task.FromResult <HttpResponseMessage>(null));
}
);
HttpMessageHandler handler = CreateProductUnderTest(inner);
var context = CreateOwinContext();
using (var request = new HttpRequestMessage())
{
request.SetOwinContext(context);
request.SetRequestContext(requestContextMock.Object);
// Act
await handler.SendAsync(request, CancellationToken.None);
}
// Assert
Assert.Equal(requestContextPrincipal, principalBeforeInnerHandler);
Assert.NotNull(principalBeforeInnerHandler);
var identity = principalBeforeInnerHandler.Identity;
Assert.NotNull(identity);
Assert.False(identity.IsAuthenticated);
Assert.Null(identity.Name);
Assert.Null(identity.AuthenticationType);
}
public async Task SendAsync_Throws_WhenRequestContextIsNull()
{
// Arrange
HttpMessageHandler innerHandler = CreateDummyHandler();
HttpMessageHandler handler = CreateProductUnderTest(innerHandler);
using (HttpRequestMessage request = new HttpRequestMessage())
{
// Act & Assert
await Assert.ThrowsArgumentAsync(
() => handler.SendAsync(request, CancellationToken.None),
"request",
"The request must have a request context.");
}
}
public async Task SendAsync_Throws_WhenAuthenticationManagerIsNull()
{
// Arrange
HttpMessageHandler innerHandler = CreateStubHandler();
HttpMessageHandler handler = CreateProductUnderTest(innerHandler);
IOwinContext context = CreateOwinContext(null);
using (HttpRequestMessage request = CreateRequestWithOwinContextAndRequestContext(context))
{
// Act & Assert
InvalidOperationException exception = await Assert.ThrowsAsync <InvalidOperationException>(
() => handler.SendAsync(request, CancellationToken.None));
Assert.Equal("No OWIN authentication manager is associated with the request.", exception.Message);
}
}
public void SendAsync_Throws_WhenOwinContextIsNull()
{
// Arrange
IHostPrincipalService principalService = CreateStubPrincipalService();
HttpMessageHandler innerHandler = CreateStubHandler();
HttpMessageHandler handler = CreateProductUnderTest(principalService, innerHandler);
using (HttpRequestMessage request = new HttpRequestMessage())
{
// Act & Assert
InvalidOperationException exception = Assert.Throws <InvalidOperationException>(() =>
{
HttpResponseMessage ignore = handler.SendAsync(request, CancellationToken.None).Result;
});
Assert.Equal("No OWIN authentication manager is associated with the request.", exception.Message);
}
}
public void SendAsync_IfSendAsyncThrows_InControllerSelector_CallsExceptionServices()
{
// Arrange
Exception expectedException = CreateException();
Mock <IExceptionLogger> exceptionLoggerMock = CreateStubExceptionLoggerMock();
IExceptionLogger exceptionLogger = exceptionLoggerMock.Object;
Mock <IExceptionHandler> exceptionHandlerMock = CreateStubExceptionHandlerMock();
IExceptionHandler exceptionHandler = exceptionHandlerMock.Object;
using (HttpRequestMessage expectedRequest = CreateRequestWithRouteData())
using (HttpConfiguration configuration = CreateConfiguration())
using (HttpMessageHandler product = CreateProductUnderTest(configuration, exceptionLogger,
exceptionHandler))
{
configuration.Services.Replace(typeof(IHttpControllerSelector),
CreateThrowingControllerSelector(expectedException));
CancellationToken cancellationToken = CreateCancellationToken();
Task <HttpResponseMessage> task = product.SendAsync(expectedRequest, cancellationToken);
// Act
task.WaitUntilCompleted();
// Assert
Func <ExceptionContext, bool> exceptionContextMatches = (c) =>
c != null &&
c.Exception == expectedException &&
c.CatchBlock == ExceptionCatchBlocks.HttpControllerDispatcher &&
c.Request == expectedRequest &&
c.ControllerContext == null;
exceptionLoggerMock.Verify(l => l.LogAsync(
It.Is <ExceptionLoggerContext>(c => exceptionContextMatches(c.ExceptionContext)),
cancellationToken), Times.Once());
exceptionHandlerMock.Verify(h => h.HandleAsync(
It.Is <ExceptionHandlerContext>((c) => exceptionContextMatches(c.ExceptionContext)),
cancellationToken), Times.Once());
}
}
public override Task <HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
{
Uri proxyUri = null;
try
{
if (!_proxy.IsBypassed(request.RequestUri))
{
proxyUri = _proxy.GetProxy(request.RequestUri);
}
}
catch (Exception)
{
// Eat any exception from the IWebProxy and just treat it as no proxy.
// TODO #21452: This seems a bit questionable, but it's what the tests expect
}
return(proxyUri == null?
_innerHandler.SendAsync(request, cancellationToken) :
SendWithProxyAsync(proxyUri, request, cancellationToken));
}
public override async Task <HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
{
HttpResponseMessage response = await _innerHandler.SendAsync(request, cancellationToken).ConfigureAwait(false);
uint redirectCount = 0;
while (true)
{
bool needRedirect = false;
bool forceGet = false;
switch (response.StatusCode)
{
case HttpStatusCode.Moved:
case HttpStatusCode.TemporaryRedirect:
needRedirect = true;
break;
case HttpStatusCode.Found:
case HttpStatusCode.SeeOther:
needRedirect = true;
forceGet = true;
break;
case HttpStatusCode.MultipleChoices:
// Don't redirect if no Location specified
if (response.Headers.Location != null)
{
needRedirect = true;
}
break;
}
if (!needRedirect)
{
break;
}
Uri location = response.Headers.Location;
if (location == null)
{
throw new HttpRequestException("no Location header for redirect");
}
if (!location.IsAbsoluteUri)
{
location = new Uri(request.RequestUri, location);
}
// Disallow automatic redirection from https to http
bool allowed =
(request.RequestUri.Scheme == UriScheme.Http && (location.Scheme == UriScheme.Http || location.Scheme == UriScheme.Https)) ||
(request.RequestUri.Scheme == UriScheme.Https && location.Scheme == UriScheme.Https);
if (!allowed)
{
break;
}
redirectCount++;
if (redirectCount > _maxAutomaticRedirections)
{
throw new HttpRequestException("max redirects exceeded");
}
// Set up for the automatic redirect
request.RequestUri = location;
if (forceGet)
{
request.Method = HttpMethod.Get;
request.Content = null;
}
// Do the redirect.
response.Dispose();
response = await _innerHandler.SendAsync(request, cancellationToken).ConfigureAwait(false);
}
return(response);
}
