René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"test: parallel/test-https-agent-unref-socket requires external network connection","articleBody":"\u003c!--\r\nThank you for reporting an issue.\r\n\r\nThis issue tracker is for bugs and issues found within Node.js core.\r\nIf you require more general support please file an issue on our help\r\nrepo. https://github.com/nodejs/help\r\n\r\n\r\nPlease fill in as much of the template below as you're able.\r\n\r\nVersion: output of `node -v`\r\nPlatform: output of `uname -a` (UNIX), or output of `\"$([Environment]::OSVersion | ForEach-Object VersionString) $(if ([Environment]::Is64BitOperatingSystem) { \"x64\" } else { \"x86\" })\"` in PowerShell console (Windows)\r\nSubsystem: if known, please specify affected core module name\r\n--\u003e\r\n\r\n* **Version**: 16.3.0\r\n* **Platform**: \r\n* **Subsystem**: test\r\n\r\n### What steps will reproduce the bug?\r\n\r\nCommit https://github.com/nodejs/node/commit/4e3353223e5a3f7e9a0ab2cdf22ed1a36fc83a3c introduced a network fragile test which fails when there is no network available,\r\n\r\n```\r\n[ 1771s] not ok 1637 parallel/test-https-agent-unref-socket\r\n[ 1771s]   ---\r\n[ 1771s]   duration_ms: 1.399\r\n[ 1771s]   severity: fail\r\n[ 1771s]   exitcode: 1\r\n[ 1771s]   stack: |-\r\n[ 1771s]     node:events:371\r\n[ 1771s]           throw er; // Unhandled 'error' event\r\n[ 1771s]           ^\r\n[ 1771s]     \r\n[ 1771s]     Error: getaddrinfo EAI_AGAIN example.com\r\n[ 1771s]         at GetAddrInfoReqWrap.onlookup [as oncomplete] (node:dns:69:26)\r\n[ 1771s]     Emitted 'error' event on ClientRequest instance at:\r\n[ 1771s]         at TLSSocket.socketErrorListener (node:_http_client:447:9)\r\n[ 1771s]         at TLSSocket.emit (node:events:394:28)\r\n[ 1771s]         at emitErrorNT (node:internal/streams/destroy:193:8)\r\n[ 1771s]         at emitErrorCloseNT (node:internal/streams/destroy:158:3)\r\n[ 1771s]         at processTicksAndRejections (node:internal/process/task_queues:83:21) {\r\n[ 1771s]       errno: -3001,\r\n[ 1771s]       code: 'EAI_AGAIN',\r\n[ 1771s]       syscall: 'getaddrinfo',\r\n[ 1771s]       hostname: 'example.com'\r\n[ 1771s]     }\r\n[ 1771s]   ...\r\n```\r\n","author":{"url":"https://github.com/AdamMajer","@type":"Person","name":"AdamMajer"},"datePublished":"2021-06-11T14:34:24.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/39008/node/issues/39008"}