{
    "http_port": 2000,
    "server_address": "localhost",

    "upstream_host": "registry.npmjs.org",
    "upstream_port": 80,

    "cache_dir": "/tmp/npm-lazy",
    "cache_mem": 200

}

{
    "http_port": 2000,
    "server_address": "localhost",

    "upstream_host": "registry.npmjs.org",
    "upstream_port": 443,
    "upstream_use_https": true,
    "upstream_verify_ssl": true,

    "cache_dir": "/tmp/npm-lazy",
    "cache_mem": 200

}

Set default access to registry server in https
Set default access to registry server in https