session.peerCertificate

• 类型：<Object> | <undefined>

将对等方的证书作为一个对象，其中包含 subject、issuer、valid_from、valid_to、fingerprint 等属性。如果会话已被销毁或对等方未提供证书，则返回 undefined。

🌐 The peer's certificate as an object with properties such as subject, issuer, valid_from, valid_to, fingerprint, etc. Returns undefined if the session is destroyed or the peer did not present a certificate.