在.NET中从HttpResponseMessage中提取和解析WWW-Authenticate报头

HttpClient client = new HttpClient();
HttpResponseMessage response = await client.GetAsync("http://example.com/api/resource");

if (response.Headers.Contains("WWW-Authenticate"))
{
    IEnumerable<string> authenticateHeaders = response.Headers.GetValues("WWW-Authenticate");
    foreach (string header in authenticateHeaders)
    {
        // 解析和处理WWW-Authenticate报头
    }
}

foreach (string header in authenticateHeaders)
{
    // 解析和处理WWW-Authenticate报头
    string[] parts = header.Split(' ');
    string scheme = parts[0]; // 身份验证方案
    string realm = ""; // 领域
    Dictionary<string, string> parameters = new Dictionary<string, string>(); // 参数

    for (int i = 1; i < parts.Length; i++)
    {
        string[] keyValue = parts[i].Split('=');
        string key = keyValue[0].Trim();
        string value = keyValue[1].Trim().Trim('"');
        if (key.Equals("realm", StringComparison.OrdinalIgnoreCase))
        {
            realm = value;
        }
        else
        {
            parameters.Add(key, value);
        }
    }

    // 打印解析结果
    Console.WriteLine("身份验证方案: " + scheme);
    Console.WriteLine("领域: " + realm);
    Console.WriteLine("参数: ");
    foreach (KeyValuePair<string, string> parameter in parameters)
    {
        Console.WriteLine(parameter.Key + ": " + parameter.Value);
    }
}