Reliable non existing domain detection

[AlexBlack772]

The library relays on word like "not found" to detect non existing domains. but, for example, .it tld does't have such words. I belive we need a method to detect such domains. We can do this in prepareXX method, or introduce net method (for example precheckXX)

whois aaadjdhfhfhssssfh.it
Domain:             aaadjdhfhfhssssfh.it
Status:             AVAILABLE

{
  "domain": {
    "domain": "aaadjdhfhfhssssfh.it",
    "punycode": "aaadjdhfhfhssssfh.it",
    "name": "aaadjdhfhfhssssfh",
    "extension": "it",
    "status": [
      "available"
    ]
  }
}

[Querying whois.nic.it]
[whois.nic.it]
Domain:             agrigento.it
Status:             UNASSIGNABLE

{
  "domain": {
    "domain": "agrigento.it",
    "punycode": "agrigento.it",
    "name": "agrigento",
    "extension": "it",
    "status": [
      "unassignable"
    ]
  }
}

what do you think?

[likexian]

Hello @AlexBlack772 Thanks for your feedback. I think it is too heavy to implement with prepareXX or precheckXX, it is more acceptable that to improve isDomainNotFound.

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[AlexBlack772]

it is more acceptable that to improve isDomainNotFound.

this is a possible way, but in this case we need another algorithm of isDomainNotFound calling.

now, isDomainNotFound is called from getDomainErrorType. But getDomainErrorType is called only if we can't detect domain name.

With .it tld we can detect domain name and getDomainErrorType is not called

[likexian]

Yes, you are right, let me think about it.

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[AlexBlack772]

JFYI, the same issue with .nl tld

sometimes it responds with the following text

whois.domain-registry.nl: Server too busy, try again later

[likexian]

Hello @AlexBlack772 It works. Please try the latest version.

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