Class: Learn::InternetConnection

Inherits:
Object
  • Object
show all
Defined in:
lib/learn/internet_connection.rb

Constant Summary collapse

STATUS_URI = 
URI('https://learn.co/p/gem_status')
SUCCESS_STATUS = 
'this is a boring message to prove you can connect to the internet'
NO_INTERNET_MESSAGE = 
"It seems like you aren't connected to the internet. All features of the Learn gem may not work properly. Trying anyway..."

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(silent: false) ⇒ InternetConnection

Returns a new instance of InternetConnection.



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# File 'lib/learn/internet_connection.rb', line 25

def initialize(silent: false)
  @connection = false
  @silent     = silent

  test_connection
end

Instance Attribute Details

#connection ⇒ Object

Returns the value of attribute connection.



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# File 'lib/learn/internet_connection.rb', line 6

def connection
  @connection
end

#silent ⇒ Object (readonly)

Returns the value of attribute silent.



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# File 'lib/learn/internet_connection.rb', line 7

def silent
  @silent
end

Class Method Details

.internet_connection? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/learn/internet_connection.rb', line 17

def self.internet_connection?
  new(silent: true).connection?
end

.no_internet_connection? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/learn/internet_connection.rb', line 13

def self.no_internet_connection?
  new.no_connection?
end

.test_connection ⇒ Object 



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# File 'lib/learn/internet_connection.rb', line 21

def self.test_connection
  new
end

Instance Method Details

#connection? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/learn/internet_connection.rb', line 72

def connection?
  connection
end

#no_connection? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/learn/internet_connection.rb', line 68

def no_connection?
  !connection
end

#test_connection(retries: 3) ⇒ Object 



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# File 'lib/learn/internet_connection.rb', line 32

def test_connection(retries: 3)
  begin
    Timeout::timeout(5) do
      resp = Net::HTTP.get(STATUS_URI)

      if resp.match(/#{SUCCESS_STATUS}/)
        self.connection = true
      else
        self.connection = false
        puts NO_INTERNET_MESSAGE if !silent
      end
    end
  rescue Timeout::Error
    if retries > 0
      test_connection(retries: retries - 1)
    else
      self.connection = false
      puts NO_INTERNET_MESSAGE if !silent
    end
  rescue SocketError => e
    if e.message.match(/getaddrinfo: nodename nor servname provided/)
      if retries > 0
        test_connection(retries: retries - 1)
      else
        self.connection = false
        puts NO_INTERNET_MESSAGE if !silent
      end
    end
  rescue OpenSSL::SSL::SSLError
    self.connection = false
    puts "It looks like your SSL certificates aren't quite right."
    puts "Please run `rvm osx-ssl-certs update all` and then try again."
    exit
  end
end