mono的https使用使用事项

        private static void SetCertificatePolicy()
        {
            if( ServicePointManager.ServerCertificateValidationCallback==null){
                ServicePointManager.ServerCertificateValidationCallback += RemoteCertificateValidate;
            }
        }
        /// <summary>  
        /// 远程证书验证，固定返回true 
        /// </summary>  
        private static bool RemoteCertificateValidate(object sender, X509Certificate cert,
            X509Chain chain, SslPolicyErrors error)
        {
            return true;
        }