HTTPS Dialog
The HTTPS Settings dialog box is used to configure HTTPS packet capture and certificate management. The interface is as follows:

| Function/Option | Description | Notes |
|---|---|---|
| Download RootCA | Download the Whistle root certificate to your local computer | Used for initial installation or when the certificate expires |
| rootCA.xxx Selector | Switch certificate formats: .crt, .cer, .pem | If installation of a certain certificate format fails, try another format |
| QR Code Address Selector | Switch mobile certificate download address | Convenient for scanning and downloading certificates on mobile phones. See Mobile Packet Capture for details |
| Enable HTTPS (Capture Tunnel Traffic) | Enable HTTPS traffic decryption (requires root certificate installation) | Can also be controlled through rules: enable://https disable://https |
| Enable HTTP/2 | Enable HTTP/2 protocol support (enabled by default) | Can also be controlled via rules: enable://http2 disable://http2 |