关键日志如下
2021-03-10 19:45:07.698218 <WARNING> [SGDNSOverHTTPSSession-35] DoH HTTP error: Error Domain=SGErrorDomain Code=0 "Connection timeout" UserInfo={NSLocalizedDescription=Connection timeout}
2021-03-10 19:45:18.453133 <WARNING> [SGOutgoingSelector] DNS over HTTP request matched with a proxy policy which uses a domain as the proxy hostname. Fallback to DIRECT
2021-03-10 19:45:27.773978 <WARNING> [SGDNSClient] DNS query timeout: vortex.data.microsoft.com, last error: N/A
