如果用户提供的 subjectaltname 属性违反编码规则，则 checkServerIdentity 会抛出此错误。
Node.js 本身生成的证书对象始终符合编码规则，永远不会出现此错误。
This error is thrown by checkServerIdentity if a user-supplied
subjectaltname property violates encoding rules. Certificate objects produced
by Node.js itself always comply with encoding rules and will never cause
this error.