C# .NET 的 HttpWebResponse 是否会自动解压缩 GZiped 和 Deflated 响应？
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Does .NET's HttpWebResponse uncompress automatically GZiped and Deflated responses?
提问by Jader Dias
I am trying to do a request that accepts a compressed response
我正在尝试做一个接受压缩响应的请求
var request = (HttpWebRequest)HttpWebRequest.Create(requestUri);
request.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip,deflate");
I wonder if when I add the second line I will have to handle the decompression manually.
我想知道当我添加第二行时，我是否必须手动处理解压。
采纳答案by Jader Dias
I found the answer.
我找到了答案。
You can change the code to:
您可以将代码更改为：
var request = (HttpWebRequest)HttpWebRequest.Create(requestUri);
request.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
And you will have automatic decompression. No need to change the rest of the code.
并且您将有自动减压。无需更改其余代码。
回答by Keltex
I think you have to decompress the stream yourself. Here's an article on how to do it:
我认为您必须自己解压缩流。这是一篇关于如何做到这一点的文章：
回答by Jeroen Landheer
GZIP and Deflate responses are not automatically handled. See this article for the details: HttpWebRequest and GZip Http Responses
GZIP 和 Deflate 响应不会自动处理。有关详细信息，请参阅本文：HttpWebRequest 和 GZip Http Responses
回答by pimbrouwers
For .NET Core things are a little more involved. A GZipStreamis needed as there isn't a property (as of writing) for AutomaticCompressionConsider the following GETexample:
对于 .NET Core，事情要复杂一些。GZipStream需要A ，因为没有属性（截至撰写时）AutomaticCompression考虑以下GET示例：
var req = WebRequest.CreateHttp(uri);
/*
* Headers
*/
req.Headers[HttpRequestHeader.AcceptEncoding] = "gzip, deflate";
/*
* Execute
*/
try
{
using (var resp = await req.GetResponseAsync())
{
using (var str = resp.GetResponseStream())
using (var gsr = new GZipStream(str, CompressionMode.Decompress))
using (var sr = new StreamReader(gsr))
{
string s = await sr.ReadToEndAsync();
}
}
}
catch (WebException ex)
{
using (HttpWebResponse response = (HttpWebResponse)ex.Response)
{
using (StreamReader sr = new StreamReader(response.GetResponseStream()))
{
string respStr = sr.ReadToEnd();
int statusCode = (int)response.StatusCode;
string errorMsh = $"Request ({url}) failed ({statusCode}) on, with error: {respStr}";
}
}
}
