Почему возникает ошибка System.Net.WebException: 'The underlying connection was closed: An unexpected error occurred on a send.'?

Question

[Incold]

HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create("https://api.guesty.com/api/v2/listings");
                webRequest.KeepAlive = false;
                webRequest.ProtocolVersion = HttpVersion.Version11;
                webRequest.Timeout = 60000;
                ServicePointManager.Expect100Continue = false;
                ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Ssl3;
                webRequest.Method = "GET";
                webRequest.ContentType = "application/json";
                webRequest.ContentLength = 0;
                string autorization = "******" + ":" + "******";
                byte[] binaryAuthorization = System.Text.Encoding.UTF8.GetBytes(autorization);
                autorization = Convert.ToBase64String(binaryAuthorization);
                autorization = "Basic " + autorization;
                webRequest.Headers.Add("Authorization", autorization);
                var response = webRequest.GetResponse();

Answer 1

[Radjah]

ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Ssl3;

Попробуй убрать два последних значения. Может отфутболивать из-за использования ненадежных методов шифрования.

Comments

[Incold]

Не помогло(. Я также пробовал другие настройки, к примеру, изменял значение KeepAlive и Expect100Continue, но безрезультатно