如何在Visual C#中发送HTTP 2.0请求 [英] How to send HTTP 2.0 request in Visual C#
本文介绍了如何在Visual C#中发送HTTP 2.0请求的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在尝试在Visual C#中发送HTTP 2.0请求.
I am trying to send HTTP 2.0 request in Visual C#.
我正在使用最新版本的.NET Framework.在Edge浏览器的开发人员工具中," https://www.google.com 网站显示为HTTP/2 .
I am using latest version .NET Framework. In Edge browser's Developer Tool, 'https://www.google.com' website is showing as HTTP/2.
但是下面的代码抛出了HTTP版本1.1.我在请求中添加了相关的User-Agent字符串.我在这里想念什么?
But below code is throwing HTTP version as 1.1. I have added relevant User-Agent string in the request. What am I missing here?
string html = string.Empty;
string url = @TextBox1.Text;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.AutomaticDecompression = DecompressionMethods.GZip;
request.Accept = "text/html, application/xhtml+xml, image/jxr, */*";
request.UserAgent = @"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.79 Safari/537.36 Edge/14.14393";
request.Method = "GET";
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
using (Stream stream = response.GetResponseStream())
using (StreamReader reader = new StreamReader(stream))
{
html = reader.ReadToEnd();
for (int i = 1; i < response.Headers.Count; ++i)
{
System.Diagnostics.Debug.WriteLine(response.Headers[i]);
String resp = response.Headers[i].ToString();
resp = response.Headers[i-1].ToString() + resp;
System.Diagnostics.Debug.WriteLine(response.ProtocolVersion);
TextBox2.Text = response.ProtocolVersion.ToString();
}
}
System.Diagnostics.Debug.WriteLine(html);
Console.WriteLine(html);
}
推荐答案
仅在Framework 4.6.2版本中支持HTTP 2.0.
HTTP 2.0 support in Framework 4.6.2 version only.
https://msdn.microsoft. com/en-us/library/ms171868(v = vs.110).aspx
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