C# RestSharp.RestClient/HttpWebRequest发起https请求时返回总是空
response.Content总是空
查看response.ErrorMessage属性发现报错信息
The SSL connection could not be established, see inner exception.
或者报错信息
Request failed with status code InternalServerError
解决办法
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12 | SecurityProtocolType.Ssl3;