[
  {
    "domain": "example.com",
    "port": 443,
    "country": "TEST",
    "remark": "普通测试节点"
  },
  {
    "domain": "example.org",
    "port": 443,
    "country": "TEST",
    "remark": "备用测试节点"
  },
  {
    "domain": "ipv6.test.invalid",
    "port": 443,
    "country": "TEST",
    "ipv6_only": true,
    "remark": "IPv6 测试节点"
  }
]