<PackageReference Include="System.Net.Http.WinHttpHandler" Version="11.0.0-preview.3.26207.106" />

System.Net.Http.WinHttpResponseParser

static class WinHttpResponseParser

public static bool GetResponseHeader(SafeWinHttpHandle requestHandle, uint infoLevel, ref char buffer, ref uint index, out string headerValue)

public static int GetResponseHeaderCharBufferLength(SafeWinHttpHandle requestHandle, bool isTrailingHeaders)

public static uint GetResponseHeaderNumberInfo(SafeWinHttpHandle requestHandle, uint infoLevel)

public static void ParseResponseTrailers(SafeWinHttpHandle requestHandle, HttpResponseMessage response, char[] buffer)