38 lines
1.0 KiB
Ruby
38 lines
1.0 KiB
Ruby
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# frozen_string_literal: true
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module Jekyll
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module Utils
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module Internet
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# Public: Determine whether the present device has a connection to
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# the Internet. This allows plugin writers which require the outside
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# world to have a neat fallback mechanism for offline building.
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#
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# Example:
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# if Internet.connected?
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# Typhoeus.get("https://pages.github.com/versions.json")
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# else
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# Jekyll.logger.warn "Warning:", "Version check has been disabled."
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# Jekyll.logger.warn "", "Connect to the Internet to enable it."
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# nil
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# end
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#
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# Returns true if a DNS call can successfully be made, or false if not.
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module_function
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def connected?
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!dns("example.com").nil?
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end
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def dns(domain)
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require "resolv"
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Resolv::DNS.open do |resolver|
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resolver.getaddress(domain)
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end
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rescue Resolv::ResolvError, Resolv::ResolvTimeout
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nil
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end
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end
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end
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end
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