NET7，HttpClient.SendAsync 没有标头

Question

我的 HttpClient.SendAsync 有问题，我尝试发送带有

POST

标头的

Authorization

请求，但是发送时它没有标头数据，这是我的发送请求代码：

static readonly HttpClient Client = new HttpClient();

        string data = "{\"key\":\"value\"}";
        long responseCode = -1;
        string stringContent = string.Empty;
        string authorizationToken = "secret";
        using (var webRequest = new HttpRequestMessage(HttpMethod.Post, url))
        {
            webRequest.Headers.Authorization = new AuthenticationHeaderValue("Bearer", authorizationToken);
            webRequest.Content = new StringContent(data, Encoding.UTF8, "application/json");
            try
            {
                using var resp = await Client.SendAsync(webRequest);
                {
                    responseCode = (long)resp.StatusCode;
                    stringContent = await resp.Content.ReadAsStringAsync();
                }
                Debug.WriteLine($"[Info] POST Result {id} {responseCode} {stringContent}");
            }
            catch (Exception ex)
            {
                Debug.WriteLine($"[Error] Cannot POST: {url} {ex.Message}");
            }
        }

网络服务端的代码

<?php
print_r(getallheaders());

当我使用其他客户端（例如

Insomnia

）时，其结果具有预期的标题

Array
(
    [Host] => localhost
    [User-Agent] => insomnia/2022.6.0
    [Content-Type] => application/x-www-form-urlencoded
    [Authorization] => Bearer hello
    [Accept] => */*
)

但是对于

HttpClent

它只显示

Array
(
    [Host] => localhost
)

它是控制台应用程序项目。