本文整理汇总了C#中System.Net.Http.WinHttpRequestState.ClearSendRequestState方法的典型用法代码示例。如果您正苦于以下问题：C# WinHttpRequestState.ClearSendRequestState方法的具体用法？C# WinHttpRequestState.ClearSendRequestState怎么用？C# WinHttpRequestState.ClearSendRequestState使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Net.Http.WinHttpRequestState的用法示例。
在下文中一共展示了WinHttpRequestState.ClearSendRequestState方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: StartRequest
private async void StartRequest(WinHttpRequestState state)
{
if (state.CancellationToken.IsCancellationRequested)
{
state.Tcs.TrySetCanceled(state.CancellationToken);
state.ClearSendRequestState();
return;
}
SafeWinHttpHandle connectHandle = null;
try
{
EnsureSessionHandleExists(state);
// Specify an HTTP server.
connectHandle = Interop.WinHttp.WinHttpConnect(
_sessionHandle,
state.RequestMessage.RequestUri.Host,
(ushort)state.RequestMessage.RequestUri.Port,
0);
ThrowOnInvalidHandle(connectHandle);
connectHandle.SetParentHandle(_sessionHandle);
// Try to use the requested version if a known/supported version was explicitly requested.
// Otherwise, we simply use winhttp's default.
string httpVersion = null;
if (state.RequestMessage.Version == HttpVersionInternal.Version10)
{
httpVersion = "HTTP/1.0";
}
else if (state.RequestMessage.Version == HttpVersionInternal.Version11)
{
httpVersion = "HTTP/1.1";
}
// Turn off additional URI reserved character escaping (percent-encoding). This matches
// .NET Framework behavior. System.Uri establishes the baseline rules for percent-encoding
// of reserved characters.
uint flags = Interop.WinHttp.WINHTTP_FLAG_ESCAPE_DISABLE;
if (state.RequestMessage.RequestUri.Scheme == UriScheme.Https)
{
flags |= Interop.WinHttp.WINHTTP_FLAG_SECURE;
}
// Create an HTTP request handle.
state.RequestHandle = Interop.WinHttp.WinHttpOpenRequest(
connectHandle,
state.RequestMessage.Method.Method,
state.RequestMessage.RequestUri.PathAndQuery,
httpVersion,
Interop.WinHttp.WINHTTP_NO_REFERER,
Interop.WinHttp.WINHTTP_DEFAULT_ACCEPT_TYPES,
flags);
ThrowOnInvalidHandle(state.RequestHandle);
state.RequestHandle.SetParentHandle(connectHandle);
// Set callback function.
SetStatusCallback(state.RequestHandle, WinHttpRequestCallback.StaticCallbackDelegate);
// Set needed options on the request handle.
SetRequestHandleOptions(state);
bool chunkedModeForSend = IsChunkedModeForSend(state.RequestMessage);
AddRequestHeaders(
state.RequestHandle,
state.RequestMessage,
_cookieUsePolicy == CookieUsePolicy.UseSpecifiedCookieContainer ? _cookieContainer : null);
uint proxyAuthScheme = 0;
uint serverAuthScheme = 0;
state.RetryRequest = false;
// The only way to abort pending async operations in WinHTTP is to close the WinHTTP handle.
// We will detect a cancellation request on the cancellation token by registering a callback.
// If the callback is invoked, then we begin the abort process by disposing the handle. This
// will have the side-effect of WinHTTP cancelling any pending I/O and accelerating its callbacks
// on the handle and thus releasing the awaiting tasks in the loop below. This helps to provide
// a more timely, cooperative, cancellation pattern.
using (state.CancellationToken.Register(s => ((WinHttpRequestState)s).RequestHandle.Dispose(), state))
{
do
{
_authHelper.PreAuthenticateRequest(state, proxyAuthScheme);
await InternalSendRequestAsync(state);
if (state.RequestMessage.Content != null)
{
await InternalSendRequestBodyAsync(state, chunkedModeForSend).ConfigureAwait(false);
}
bool receivedResponse = await InternalReceiveResponseHeadersAsync(state) != 0;
if (receivedResponse)
{
// If we're manually handling cookies, we need to add them to the container after
// each response has been received.
if (state.Handler.CookieUsePolicy == CookieUsePolicy.UseSpecifiedCookieContainer)
{
WinHttpCookieContainerAdapter.AddResponseCookiesToContainer(state);
//.........这里部分代码省略.........