问题描述
在App Service中启用了HTTP 2.0后，如何来验证它可以正常接受HTTP 2.0的请求呢？
问题解答
如果直接使用浏览器访问，无法直接判断出来是否使用 HTTP 2.0，所以本文中使用.NET Console代码来测试HTTP 2.0.
第一步：打开Visual Studio 2022，创建一个.NET Console Application
第二步：添加 HttpClient() 代码，并设置 HttpRequestMessage 的 Version 为2.0
Console.WriteLine("Hello, World!"); var client = new HttpClient() { BaseAddress = new Uri("https://lbphptest01.chinacloudsites.cn/") }; Console.WriteLine("Sending HTTP 2.0 Request."); // HTTP/2 request using (var request = new HttpRequestMessage(HttpMethod.Get, "/") { Version = new Version(2, 0) }) using (var response = await client.SendAsync(request)) Console.WriteLine(response);
注意：也可以直接指定 HTTPClient 类 DefaultRequestVersion 属性值
var SecondRequest = new HttpClient() { BaseAddress = new Uri("https://lbphptest01.chinacloudsites.cn/"), DefaultRequestVersion = new Version(2, 0) }; // HTTP/2 is default using (var response = await SecondRequest.GetAsync("/")) Console.WriteLine(response);
第三步：运行代码，查看结果 HttpResponse Version 为2.0
附录：示例代码
// .NET Console App的代码使用的.NET 8 Framework并且使用顶级语句(top-level statements) Console.WriteLine("Hello, World!"); var client = new HttpClient() { BaseAddress = new Uri("https://xxx.chinacloudsites.cn/") }; Console.WriteLine("#1: Sending HTTP 2.0 Request By HttpRequestMessage Version"); // HTTP/2 request using (var request = new HttpRequestMessage(HttpMethod.Get, "/") { Version = new Version(2, 0) }) using (var response = await client.SendAsync(request)) Console.WriteLine(response); Console.WriteLine("#2: Sending HTTP 2.0 Request By HttpClient DefaultRequestVersion"); var SecondRequest = new HttpClient() { BaseAddress = new Uri("https://xxx.chinacloudsites.cn/"), DefaultRequestVersion = new Version(2, 0) }; // HTTP/2 is default using (var response = await SecondRequest.GetAsync("/")) Console.WriteLine(response); Console.Read();
参考资料
Send HTTP 2.0 Request to App Service using C# ： https://techcommunity.microsoft.com/t5/apps-on-azure-blog/send-http-2-0-request-to-app-service-using-c/ba-p/4034469
HttpClient Class：https://learn.microsoft.com/en-us/dotnet/api/system.net.http.httpclient?view=net-8.0
HttpClient.DefaultRequestVersion Property : https://learn.microsoft.com/en-us/dotnet/api/system.net.http.httpclient.defaultrequestversion?view=net-8.0#system-net-http-httpclient-defaultrequestversion
