C# 如何处理传输编码：使用.NET Core HttpClient.PostAsync下载文件时分块 处境

我正在使用HttpClient（System.Net.Http，Version=4.2.1.0）将包含多部分表单数据的Http请求发布到web API。表单数据包括一个字符串参数（

benchmark

）和一个文件（

addressFile

），该文件包含在

流中。API调用返回我要保存到磁盘的CSV文件

响应包含头
Transfer Encoding:chunked
，而
responseBytes
中包含的数据包括块头。我希望HttpClient库去掉这些头，它们是实际内容的元数据。相反，它只是在
内容中包含标题行

问题:
处理这些块头的正确方法是什么

我当然可以自己编写一个方法来处理头部，但我发现很难相信HttpClient库中还没有这个功能

代码
结果
注意第一行和后续行上的区块标题（
0fe8
，
0060
，
0fe8
）

预期结果
我希望头被HttpClient库剥离

"AK0000036228","500 HOLLYWOOD DR, ANCHORAGE, AK, 99501","Match","Exact","500 HOLLYWOOD DR, ANCHORAGE, AK, 99501","-149.87424,61.23034","190797469","R"
"AK0000363994","3155 E 18TH CIR, ANCHORAGE, AK, 99508","Match","Non_Exact","3155 E 18TH CIR, ANCHORAGE, AK, 99508","-149.82193,61.20462","190799569","L"
"AK0000228718","1050 ASPEN ST, FAIRBANKS, AK, 99709-5501","Match","Exact","1050 ASPEN ST, FAIRBANKS, AK, 99709","-147.7731,64.8535","605310042","L"
"AK0000536714","SMITH COVE IN SMITH LAGOON T74S R86E CRM S17 & 20, KASAAN, AK, 99901","No_Match"
"AK0001413822","USS-12403, N BANK WOOD RIVER, ALEKNAGIK, AK, 99555","No_Match"
"AK0000489567","BREAKWATER BTWN WESTERN AVE & TAIT ST, METLAKATLA, AK, 99926","No_Match"

我最终编写了这个扩展方法，它在我的用例中表现得足够好

    public static Task<Stream> ReadAsStreamAsync(this HttpContent content, bool isChunked)
    {
        if (!isChunked)
        {
            return content.ReadAsStreamAsync();
        }
        else
        {
            var task = content.ReadAsStreamAsync()
            .ContinueWith<Stream>((streamTask) =>
            {
                var outputStream = new MemoryStream();
                var buffer = new char[1024 * 1024];
                var stream = streamTask.Result;

                // No using() so that we don't dispose stream.
                var tr = new StreamReader(stream);
                var tw = new StreamWriter(outputStream);

                while (!tr.EndOfStream)
                {
                    var chunkSizeStr = tr.ReadLine().Trim();
                    var chunkSize = int.Parse(chunkSizeStr, System.Globalization.NumberStyles.HexNumber);

                    tr.ReadBlock(buffer, 0, chunkSize);
                    tw.Write(buffer, 0, chunkSize);
                    tr.ReadLine();
                }

                return outputStream;
            });

            return task;
        }


    }

public static Task ReadAsStreamAsync（此HttpContent，bool为chunked）
{
如果（！isChunked）
{
返回content.ReadAsStreamAsync（）；
}
其他的
{
var task=content.ReadAsStreamAsync（）
.ContinueWith（（流任务）=>
{
var outputStream=new MemoryStream（）；
var buffer=新字符[1024*1024]；
var stream=streamTask.Result；
//不使用（）以便不处理流。
var tr=新的StreamReader（stream）；
var tw=新的StreamWriter（outputStream）；
而（！tr.EndOfStream）
{
var chunksizest=tr.ReadLine（）.Trim（）；
var chunkSize=int.Parse（chunksizest，System.Globalization.NumberStyles.HexNumber）；
tr.ReadBlock（缓冲区，0，chunkSize）；
tw.Write（缓冲区，0，chunkSize）；
tr.ReadLine（）；
}
返回输出流；
});
返回任务；
}
}
如果响应仅为文本。Httpclient自动处理它（仅用于字符串）

"AK0000036228","500 HOLLYWOOD DR, ANCHORAGE, AK, 99501","Match","Exact","500 HOLLYWOOD DR, ANCHORAGE, AK, 99501","-149.87424,61.23034","190797469","R"
"AK0000363994","3155 E 18TH CIR, ANCHORAGE, AK, 99508","Match","Non_Exact","3155 E 18TH CIR, ANCHORAGE, AK, 99508","-149.82193,61.20462","190799569","L"
"AK0000228718","1050 ASPEN ST, FAIRBANKS, AK, 99709-5501","Match","Exact","1050 ASPEN ST, FAIRBANKS, AK, 99709","-147.7731,64.8535","605310042","L"
"AK0000536714","SMITH COVE IN SMITH LAGOON T74S R86E CRM S17 & 20, KASAAN, AK, 99901","No_Match"
"AK0001413822","USS-12403, N BANK WOOD RIVER, ALEKNAGIK, AK, 99555","No_Match"
"AK0000489567","BREAKWATER BTWN WESTERN AVE & TAIT ST, METLAKATLA, AK, 99926","No_Match"

    public static Task<Stream> ReadAsStreamAsync(this HttpContent content, bool isChunked)
    {
        if (!isChunked)
        {
            return content.ReadAsStreamAsync();
        }
        else
        {
            var task = content.ReadAsStreamAsync()
            .ContinueWith<Stream>((streamTask) =>
            {
                var outputStream = new MemoryStream();
                var buffer = new char[1024 * 1024];
                var stream = streamTask.Result;

                // No using() so that we don't dispose stream.
                var tr = new StreamReader(stream);
                var tw = new StreamWriter(outputStream);

                while (!tr.EndOfStream)
                {
                    var chunkSizeStr = tr.ReadLine().Trim();
                    var chunkSize = int.Parse(chunkSizeStr, System.Globalization.NumberStyles.HexNumber);

                    tr.ReadBlock(buffer, 0, chunkSize);
                    tw.Write(buffer, 0, chunkSize);
                    tr.ReadLine();
                }

                return outputStream;
            });

            return task;
        }


    }

string result = await response.Content.ReadAsStringAsync();