{
  "name": "download.refreshUrl \u2014 a signed URL expired mid-download",
  "description": "IDM's Refresh Download Address. Points the task at a fresh link and keeps every byte already on disk.",
  "request": {
    "jsonrpc": "2.0",
    "id": 26,
    "method": "download.refreshUrl",
    "params": {
      "taskId": "$taskId",
      "url": "https://releases.ubuntu.com/26.04/ubuntu-26.04-desktop-amd64.iso?token=eyJhbGciOiJIUzI1NiJ9.fresh",
      "headers": {
        "Referer": "https://releases.ubuntu.com/26.04/"
      }
    }
  },
  "response": {
    "jsonrpc": "2.0",
    "id": 26,
    "result": {
      "ok": true,
      "resumable": true,
      "contentChanged": false,
      "sizeBytes": 6228541440,
      "effectiveUrl": "https://releases.ubuntu.com/26.04/ubuntu-26.04-desktop-amd64.iso?token=eyJhbGciOiJIUzI1NiJ9.fresh"
    }
  },
  "assertions": [
    "size and validator are compared against what was recorded before resuming",
    "contentChanged true must make the GUI ask before restarting; bytes are never discarded silently"
  ]
}