C# 如何在UnitTest类上创建HTTPS请求？

我创建了一个单元测试类来测试一个简单的HTTPS请求

[TestMethod]
public async Task TestMethod1()
{

    string destination = "...";
    string message = "..";
    string accountUsername = "..";
    string accountPassword = "..";
    string senderPhoneNumber = "...";

    HttpStatusCode response = await SMSProvider.Send(destination, message, accountUsername, accountPassword, senderPhoneNumber);

    Assert.AreEqual(HttpStatusCode.GatewayTimeout, response);
}

SMS提供者是一个库类

public static async Task<HttpStatusCode> Send(String destination, String message, String accountUsername, String accountPassword, String senderPhoneNumber)
{
    HttpClient client = new HttpClient();

    var values = new Dictionary<string, string>
    {
        { "username", accountUsername },
        { "password", accountPassword }, 
        { "src", senderPhoneNumber },
        { "dst", destination },
        { "text", message },
        { "srr", "3" }
    };

    var content = new FormUrlEncodedContent(values);

    HttpStatusCode responseStatus = HttpStatusCode.Accepted;

    try
    {
        var response = await client.PostAsync("https:SPECIFIC-URL-HERE", content);
        var responseString = await response.Content.ReadAsStringAsync();
        responseStatus = response.StatusCode;
    }
    catch (WebException we)
    {
        string error = we.ToString();
    }
    catch (Exception e)
    {
        string error = e.ToString();
    }


    return responseStatus;
}

如何发送HTTPS请求？

---

我需要证书吗？

这有什么帮助吗？现在刚刚尝试过这种方法：D仍然不工作=（你检查过证书以确保它是可信的吗？什么证书？我对这个有点陌生。据我所知，服务器有一个证书，其中包含公钥（我认为是理论上的）。我需要安装什么吗？如果你想通过HTTPS与服务器通信，那么它必须安装一个受信任的证书，或者安装一个不受信任的证书，它们与你共享并在你的应用程序中使用。在浏览器中打开Url（使用HTTPS），在Url的左侧，你应该有一个安全的指示（通常是挂锁）.先检查一下。

System.Net.Http.HttpRequestException: An error occurred while sending the request. ---> System.Net.WebException: The request was aborted: Could not create SSL/TLS secure channel.