为什么我的 API 方法返回 Received an unexpected EOF or 0 bytes from the transport stream

Question

我正在尝试连接 API。 API 旨在将 XML 发送到接收方 API 作为 POST request.I 我正在使用以下代码来尝试和促进这一点。

    [HttpPost]
    [Route("PostCadXmlApiKey")]
    public async Task<string> PostCadXmlApiKey()
    {
        using (var httpClient = new HttpClient())

        {
            try
            {
                CadDto cadDto = new CadDto();

                cadDto = await _cadService.GetCadXmlFromRepoAsync();

                string carmUrl = _config.GetValue<string>("Lii:Values:CarmUrl");
                string carmKey = _config.GetValue<string>("Lii:Values:CarmKey");

                var content = new StringContent(cadDto.CadXml, Encoding.UTF8, "application/xml");

                //HttpClientHandler clientHandler = new HttpClientHandler();
                //clientHandler.ServerCertificateCustomValidationCallback = (sender, cert, chain, sslPolicyErrors) => { return true; };

                //ServicePointManager.ServerCertificateValidationCallback += (sender, certificate, chain, errors) =>
                //{ return true; };
                //ServicePointManager.DefaultConnectionLimit = 9999;
                //ServicePointManager.Expect100Continue = true;
                //ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12 | SecurityProtocolType.Tls13;

                httpClient.BaseAddress = new Uri(carmUrl);
                httpClient.DefaultRequestHeaders.Accept.Clear();
                httpClient.DefaultRequestHeaders.Add("x-API-KEY", carmKey);
                httpClient.Timeout= TimeSpan.FromSeconds(100); 

                HttpResponseMessage response = await httpClient.PostAsync("commercialAccoutingDeclarations", content);

                httpClient.DefaultRequestHeaders.ConnectionClose = true;

                if (response.StatusCode == HttpStatusCode.OK)
                { 
                    string result = await response.Content.ReadAsStringAsync();
                    if (string.IsNullOrEmpty(result))
                        return "Success";
                    else
                        return result;
                }
                else if (response.StatusCode == HttpStatusCode.Unauthorized)
                {
                    throw new UnauthorizedAccessException();
                }
                else
                {
                    throw new Exception(await response.Content.ReadAsStringAsync());
                }
            }
            catch(Exception ex)
            {
                string message = ex.Message;
            }
        }

        return null;
    }

当我执行此操作时，我收到以下错误：

无法建立 SSL 连接，请参阅内部异常。

内部异常是：从传输流中收到意外的 EOF 或 0 字节。

这是 .net 6.0 C# 网站 Api。

我已经尝试了一些代码更改（您可以看到其中一些已被注释掉）但到目前为止没有成功。

Answer 1

问题已解决。这是由于很多事情：

我的代码中 URL 错别字
供应商发布的 URL 不正确
在我本应首先部署的情况下在本地执行 API 解决方案来自公司测试服务器（服务器 IP 已列入白名单）。

为什么我的 API 方法返回 Received an unexpected EOF or 0 bytes from the transport stream

Why is my API method returing Received an unexpected EOF or 0 bytes from the transport stream

c#

web

webapi