HttpMessageInvoker.Send(HttpRequestMessage, CancellationToken) 方法
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
使用指定的请求和取消令牌发送 HTTP 请求。
public:
virtual System::Net::Http::HttpResponseMessage ^ Send(System::Net::Http::HttpRequestMessage ^ request, System::Threading::CancellationToken cancellationToken);[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
public virtual System.Net.Http.HttpResponseMessage Send(System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken);[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
[System.Runtime.Versioning.UnsupportedOSPlatform("android")]
[System.Runtime.Versioning.UnsupportedOSPlatform("ios")]
[System.Runtime.Versioning.UnsupportedOSPlatform("tvos")]
public virtual System.Net.Http.HttpResponseMessage Send(System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken);public virtual System.Net.Http.HttpResponseMessage Send(System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken);[<System.Runtime.Versioning.UnsupportedOSPlatform("browser")>]
abstract member Send : System.Net.Http.HttpRequestMessage * System.Threading.CancellationToken -> System.Net.Http.HttpResponseMessage
override this.Send : System.Net.Http.HttpRequestMessage * System.Threading.CancellationToken -> System.Net.Http.HttpResponseMessage[<System.Runtime.Versioning.UnsupportedOSPlatform("browser")>]
[<System.Runtime.Versioning.UnsupportedOSPlatform("android")>]
[<System.Runtime.Versioning.UnsupportedOSPlatform("ios")>]
[<System.Runtime.Versioning.UnsupportedOSPlatform("tvos")>]
abstract member Send : System.Net.Http.HttpRequestMessage * System.Threading.CancellationToken -> System.Net.Http.HttpResponseMessage
override this.Send : System.Net.Http.HttpRequestMessage * System.Threading.CancellationToken -> System.Net.Http.HttpResponseMessageabstract member Send : System.Net.Http.HttpRequestMessage * System.Threading.CancellationToken -> System.Net.Http.HttpResponseMessage
override this.Send : System.Net.Http.HttpRequestMessage * System.Threading.CancellationToken -> System.Net.Http.HttpResponseMessagePublic Overridable Function Send (request As HttpRequestMessage, cancellationToken As CancellationToken) As HttpResponseMessage参数
- request
- HttpRequestMessage
要发送的 HTTP 请求消息。
- cancellationToken
- CancellationToken
取消操作的取消令牌。
返回
HTTP 响应消息。
- 属性
例外
request是null。
对于 HTTP/2 及更高版本，或者在请求版本升级时启用 RequestVersionOrHigher。
-或-
如果使用派生自 HttpContent 不重写方法的 SerializeToStream(Stream, TransportContext, CancellationToken) 自定义类。
-或-
如果使用自定义 HttpMessageHandler 不重写 Send(HttpRequestMessage, CancellationToken) 方法。
取消令牌已取消。 此异常存储在返回的任务中。
