如何用Discord.NET（C#）实现Discord超时命令？HTTP请求遇未授权错误

我尝试用Discord.NET开发调用Discord新Timeout功能的C#命令，但没找到对应函数，于是改用HTTP PATCH请求实现，结果返回未授权错误。相关代码如下：

public static async Task PatchData(string url, string data, string token)
{
    // Create a new HttpClient instance
    using var httpClient = new HttpClient();
    httpClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Authorization",token);
    httpClient.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));

    var content = new StringContent(data, Encoding.UTF8, "application/json");
    var response = await httpClient.PatchAsync(url, content);

    if (response.IsSuccessStatusCode)
    {
        Console.WriteLine("Data patched successfully!");
    }
    else
    {
        Console.WriteLine(response.StatusCode);
    }
}

执行代码：

await Patch.PatchData($"https://discord.com/api/v9/guilds/{Context.Guild.Id}/members/{user.Id}", 
    "{\"communication_disabled_until\": " 
    + current_time + time_in_minutes + "}",botToken);

问题排查与解决方案 #

• 检查Bot权限
  Discord的Timeout功能要求机器人必须拥有MODERATE_MEMBERS权限，先确认机器人在目标服务器中已被授予该权限，邀请机器人时的链接也要包含这个权限（权限码对应268435456）。

• 修正Token授权格式
  机器人Token的Authorization头必须带Bot 前缀，你的代码直接传入token导致格式错误。修改授权头代码：

  httpClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bot", token);
  

• 修复请求体JSON格式
  communication_disabled_until需要ISO 8601格式的字符串，且必须用引号包裹。你直接拼接数字会导致JSON无效，Discord API可能返回未授权（实际是请求格式错误）。修正请求体拼接逻辑：

  var timeoutUntil = DateTime.UtcNow.AddMinutes(time_in_minutes).ToString("o");
  var data = $"{{\"communication_disabled_until\": \"{timeoutUntil}\"}}";
  

• 优化HttpClient复用
  每次创建新HttpClient会导致连接泄漏，建议复用静态HttpClient实例：

  private static readonly HttpClient _httpClient = new HttpClient();
  
  static YourClassName()
  {
      _httpClient.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
  }
  

修正后的完整代码示例 #

private static readonly HttpClient _httpClient = new HttpClient();

static Patch()
{
    _httpClient.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
}

public static async Task PatchData(string url, string data, string token)
{
    _httpClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bot", token);
    var content = new StringContent(data, Encoding.UTF8, "application/json");
    var response = await _httpClient.PatchAsync(url, content);

    if (response.IsSuccessStatusCode)
    {
        Console.WriteLine("Data patched successfully!");
    }
    else
    {
        // 建议获取错误详情排查
        var errorMsg = await response.Content.ReadAsStringAsync();
        Console.WriteLine($"错误状态码：{response.StatusCode}，详情：{errorMsg}");
    }
}

// 调用示例
var timeoutUntil = DateTime.UtcNow.AddMinutes(time_in_minutes).ToString("o");
var requestData = $"{{\"communication_disabled_until\": \"{timeoutUntil}\"}}";
await Patch.PatchData($"https://discord.com/api/v9/guilds/{Context.Guild.Id}/members/{user.Id}", requestData, botToken);

内容的提问来源于stack exchange，提问作者https