今天部署一个应用到，部署应用遇到个小坑。

部署环境

• 服务器：Linux Sever
• 环境：Mono 6.x
• 应用：.NET Framework 4.X ConsoleApp

问题

在本地开发环境上，运行 mono ConsoleApp.exe 跑得十分欢快。结果，部署到生产环境就立马挂掉了！

一通查log + Debug下来，发现全都是Http客户端请求Https地址，因为SSL安全校验的报错。

HttpWebRequest 报错：TrustFailure (Authentication failed, see inner exception.)

HttClient 报错：The SSL connection could not be established

问题找到了，于是连忙问某度。找到了一个简单粗暴的解决方案，不废话直接上代码：

• for HttClient

HttpClientHandler httpClientHandler = new HttpClientHandler()
{
    ServerCertificateCustomValidationCallback = (message, certificate2, arg3, arg4) => true
};
var httpClient = new HttpClient(httpClientHandler);
var response = httpClient.GetAsync(url)
....

• for HttpWebRequest

ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback((message, certificate2, arg3, arg4) => true);
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
...

搞定，收工！