PappyProxy/pappyproxy/default_user_config.json

{
    "data_file": "./data.db",
    "cert_dir": "{DATADIR}/certs",
    "history_size": 1000,
    "proxy_listeners": [
        {"port": 8000, "interface": "127.0.0.1"}
    ],
    "socks_proxy": null
}