如何将带有自定义标头的任意 JSON 数据发送到 REST 服务器？

TL;DR -- 如何将 JSON 字符串发送到带有 auth 标头的 REST 主机？我尝试了 3 种不同的方法，发现一种适用于匿名类型。为什么我不能使用匿名类型？我需要设置一个名为“Group-Name”的变量，并且连字符不是有效的 C# 标识符。

背景

我需要 POST JSON，但无法获取正确的正文和内容类型

函数 #1 - 使用匿名类型

内容类型和数据是正确的，但我不想使用匿名类型。我想用一个字符串

  static void PostData(string restURLBase, string RESTUrl, string AuthToken, string postBody)
    {
        HttpClient client = new HttpClient();
        client.BaseAddress = new Uri(restURLBase);
        client.DefaultRequestHeaders.Add("Auth-Token", AuthToken);
        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

        // StringContent content = new StringContent(postBody);

        var test1 = "data1";
        var test2 = "data2";
        var test3 = "data3";

        var response = client.PostAsJsonAsync(RESTUrl, new { test1, test2, test3}).Result;  // Blocking call!
        if (!response.IsSuccessStatusCode)
        {
            Console.WriteLine("{0} ({1})", (int)response.StatusCode, response.ReasonPhrase);
            return;
        } 
    }

输出#1

使用 AnonymousTypes + PostAsJsonAsync 时内容类型和数据是正确的，但我不想使用匿名类型。

POST https://api.dynect.net/REST/Zone/ABCqqqqqqqqqqqqYYYYYtes3ss.com HTTP/1.1
Auth-Token: --- REDACTED -----
Accept: application/json
Content-Type: application/json; charset=utf-8
Host: api.dynect.net
Content-Length: 49
Expect: 100-continue

{"test1":"data1","test2":"data2","test3":"data3"}

功能 #2 - 未按预期工作

获取一个字符串并将其放入 StringContent 对象中。这会产生更改内容类型的副作用。

  static void PostData(string restURLBase, string RESTUrl, string AuthToken, string postBody)
    {
        HttpClient client = new HttpClient();
        client.BaseAddress = new Uri(restURLBase);
        client.DefaultRequestHeaders.Add("Auth-Token", AuthToken);
        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

        StringContent content = new StringContent(postBody);

        var response = client.PostAsync(RESTUrl, content).Result;  // Blocking call!
        if (!response.IsSuccessStatusCode)
        {
            Console.WriteLine("{0} ({1})", (int)response.StatusCode, response.ReasonPhrase);
            return;
        } 
    }

输出#2

使用 StringContent + PostAsync 时内容类型错误

POST https://api.dynect.net/REST/Zone/ABCqqqqqqqqqqqqYYYYYtes3ss.com HTTP/1.1
Auth-Token: ---- REDACTED -------
Accept: application/json                      // CORRECT
Content-Type: text/plain; charset=utf-8       // WRONG!!!
Host: api.dynect.net
Content-Length: 100
Expect: 100-continue

{"rdata" : ["rname" : "dynect.nfp.com", "zone" : "ABCqqqqqqqqqqqqYYYYYtes3ss.com"], "ttl" : "43200"}
        // ^^ THIS IS CORRECT

功能 #3 - 未按预期工作

自从我知道PostAsJsonAsync正确设置 contentType，让我们使用该方法。 （不起作用）

    static void PostData(string restURLBase, string RESTUrl, string AuthToken, string postBody)
    {
        HttpClient client = new HttpClient();
        client.BaseAddress = new Uri(restURLBase);
        client.DefaultRequestHeaders.Add("Auth-Token", AuthToken);
        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

        StringContent content = new StringContent(postBody);

        var response = client.PostAsJsonAsync(RESTUrl, content).Result;  // Blocking call!
        if (!response.IsSuccessStatusCode)
        {
            Console.WriteLine("{0} ({1})", (int)response.StatusCode, response.ReasonPhrase);
            return;
        } 
    }

输出#3

使用 StringContent + PostAsJsonAsync 时内容类型正确，POST 正文错误

POST https://api.dynect.net/REST/Zone/ABCqqqqqqqqqqqqYYYYYtes3ss.com HTTP/1.1
Auth-Token: -- REDACTED ---
Accept: application/json
Content-Type: application/json; charset=utf-8
Host: api.dynect.net
Content-Length: 74
Expect: 100-continue

{"Headers":[{"Key":"Content-Type","Value":["text/plain; charset=utf-8"]}]}

Question

我想要做的就是将 JSON 作为字符串或在运行时定义的动态对象发送到服务器，并使用正确的 HTTP 内容类型和特殊的“Auth-Token”标头。

任何示例，如果不使用 WebAPI，例如 servicestack 或其他任何东西都很酷。

/// <summary>
    /// Creates a new instance of the <see cref="T:System.Net.Http.StringContent"/> class.
    /// </summary>
    /// <param name="content">The content used to initialize the <see cref="T:System.Net.Http.StringContent"/>.</param><param name="encoding">The encoding to use for the content.</param><param name="mediaType">The media type to use for the content.</param>
    [__DynamicallyInvokable]
    public StringContent(string content, Encoding encoding, string mediaType)
      : base(StringContent.GetContentByteArray(content, encoding))
    {
      this.Headers.ContentType = new MediaTypeHeaderValue(mediaType == null ? "text/plain" : mediaType)
      {
        CharSet = encoding == null ? HttpContent.DefaultStringEncoding.WebName : encoding.WebName
      };
    }

它是 StringContent 的构造函数。看起来您应该指定适当的 Encoding 和 mediaType