[Testnet 0.12] Error: getaddrinfo ENOENT when waking from sleep mode

[SebastienGllmt]

On Testnet Daedalus 0.12.0 (Windows 10)
If my computer goes to sleep mode after syncing the blockchain, waking up the computer gets me stuck on Starting Cardano Node...

Here is the error log from Daedalus.log

[2018-12-06T05:39:46.0533Z] [debug] [renderer] Local blockchain height: 306574
[2018-12-06T05:39:46.0533Z] [debug] [renderer] Network blockchain height: 306575
[2018-12-06T05:39:46.0533Z] [debug] [renderer] Total unsynced blocks at node start: 77
[2018-12-06T05:39:46.0533Z] [debug] [renderer] Blocks synced since node start: 76
[2018-12-06T06:28:04.0029Z] [debug] [renderer] System time change detected
[2018-12-06T06:28:04.0031Z] [debug] [renderer] AdaApi::getNetworkStatus (FORCE-NTP-CHECK) called
[2018-12-06T06:28:04.0032Z] [debug] [renderer] AdaApi::getNetworkStatus called
[2018-12-06T06:28:04.0395Z] [debug] [renderer] AdaApi::nextUpdate called
[2018-12-06T06:28:04.0395Z] [debug] [renderer] AdaApi::getWallets called
[2018-12-06T06:28:04.0396Z] [error] [renderer] AdaApi::getNetworkStatus (FORCE-NTP-CHECK) error: {
  "stack": "Error: getaddrinfo ENOENT localhost:29827\n    at Object.exports._errnoException (util.js:1050:11)\n    at errnoException (dns.js:33:15)\n    at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:73:26)",
  "message": "getaddrinfo ENOENT localhost:29827",
  "code": "ENOENT",
  "errno": "ENOENT",
  "syscall": "getaddrinfo",
  "hostname": "localhost",
  "host": "localhost",
  "port": 29827
}

Restarting Daedalus fixes the issue.

[nikolaglumac]

Thanks for the report @SebastienGllmt.
May I ask you if you see the same problem with the current production/mainnet Daedalus?

[SebastienGllmt]

Oh hey you're right -- I get the same error on current mainnet Daedalus. However, it seems that the mainnet Daedalus auto-recovers after a few minutes. Testnet Daedalus seems to be stuck indefinitely.

Here is the error on Mainnet Daedalus (from which I recover after a few minutes of connecting to network...)

renderer.js:34 [19:06:41.402] AdaApi::nextUpdate error: {
  "stack": "Error: getaddrinfo ENOENT localhost:8090\n    at Object.exports._errnoException (util.js:1050:11)\n    at errnoException (dns.js:33:15)\n    at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:73:26)",
  "message": "getaddrinfo ENOENT localhost:8090",
  "code": "ENOENT",
  "errno": "ENOENT",
  "syscall": "getaddrinfo",
  "hostname": "localhost",
  "host": "localhost",
  "port": 8090
}

[cleverca22]

it also matters heavily how long the computer has been in sleep mode, if its only been a few minutes, it can recover

but if its been in sleep mode for an hour, the connection may fail, and then it takes longer to recover

[nikolaglumac]

The issue has been resolved in: #1213