HttpVersion 類別

定義

命名空間:

System.Net

組件:

System.Net.Primitives.dll

來源:

HttpVersion.cs

定義 HttpWebRequest 和 HttpWebResponse 類別 (Class) 支援的 HTTP 版本號碼。

public ref class HttpVersion abstract sealed

public static class HttpVersion

type HttpVersion = class

Public Class HttpVersion

繼承

Object

HttpVersion

範例

下列範例示範 HttpVersion 的用法。

// HttpClient lifecycle management best practices:
// https://learn.microsoft.com/dotnet/fundamentals/networking/http/httpclient-guidelines#recommended-use
HttpClient^ client = gcnew HttpClient();

HttpRequestMessage^ request = new HttpRequestMessage(HttpMethod::Get, "http://www.microsoft.com");
Console::WriteLine("Default HTTP request version is {0}", request.Version);

request.Version = HttpVersion.Version10;
Console::WriteLine("Request version after assignment is {0}", request.Version);

HttpResponseMessage^ response = client->Send(request);
Console::WriteLine("Response HTTP version {0}", response.Version);

// HttpClient lifecycle management best practices:
// https://learn.microsoft.com/dotnet/fundamentals/networking/http/httpclient-guidelines#recommended-use
using HttpClient client = new HttpClient();

using HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, "http://www.microsoft.com");
Console.WriteLine("Default HTTP request version is {0}", request.Version);

request.Version = HttpVersion.Version10;
Console.WriteLine("Request version after assignment is {0}", request.Version);

using HttpResponseMessage response = client.Send(request);
Console.WriteLine("Response HTTP version {0}", response.Version);

' HttpClient lifecycle management best practices:
' https://learn.microsoft.com/dotnet/fundamentals/networking/http/httpclient-guidelines#recommended-use
Using client As New HttpClient()
    Using request As New HttpRequestMessage(HttpMethod.Get, "http://www.microsoft.com")
        Console.WriteLine("Default HTTP request version is {0}", request.Version)

        request.Version = HttpVersion.Version10
        Console.WriteLine("Request version after assignment is {0}", request.Version)

        Using response As HttpResponseMessage = client.Send(request)
            Console.WriteLine("Response HTTP version {0}", response.Version)
        End Using
    End Using
End Using

備註

類別 HttpVersion 會定義 類別所 HttpClient 支援的 HTTP 版本。 HTTP 版本號碼是用來控制 HTTP 的版本特定功能，例如管線和區塊化。

欄位

Unknown	定義未知 HTTP 版本的 Version 執行個體。
Version10	定義 HTTP 1.0 的 Version 執行個體。
Version11	定義 HTTP 1.1 的 Version 執行個體。
Version20	定義 HTTP 2.0 的 Version 執行個體。
Version30	定義 Version HTTP 3.0 的實例。