{"published":"2023-09-30 11:41:21","width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftnakamura.hatenablog.com%2Fentry%2F2023%2F09%2F30%2Fhow-to-download-server-certificates\" title=\"HttpClient \u3092\u4f7f\u3063\u3066 HTTPS \u30b5\u30a4\u30c8\u306e\u8a3c\u660e\u66f8\u3092\u53d6\u5f97 - present\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"griefworker","height":"190","provider_url":"https://hatena.blog","blog_url":"https://tnakamura.hatenablog.com/","type":"rich","version":"1.0","provider_name":"Hatena Blog","url":"https://tnakamura.hatenablog.com/entry/2023/09/30/how-to-download-server-certificates","title":"HttpClient \u3092\u4f7f\u3063\u3066 HTTPS \u30b5\u30a4\u30c8\u306e\u8a3c\u660e\u66f8\u3092\u53d6\u5f97","image_url":null,"categories":[".NET","C#"],"blog_title":"present","author_url":"https://blog.hatena.ne.jp/griefworker/","description":"HttpClientHandler \u306e ServerCertificateCustomValidationCallback \u306b\u30bb\u30c3\u30c8\u3057\u305f\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u5185\u3067\u3001\u8a3c\u660e\u66f8\u3068\u8a3c\u660e\u66f8\u30c1\u30a7\u30a4\u30f3\u3092\u53d6\u308a\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u305f\u3002 using System; using System.Collections.Generic; using System.Net.Http; using System.Security.Cryptography.X509Certificates; using System.Threading.Tasks; namespace CertificateSample { internal class \u2026"}