IOSCertEnrollment is ruby gem for iOS SCEP, how to run this on localhost?

Question

So this is rails gem for iOS SCEP, this library code has example as well examples runs using webrick and sinatra, i created self sign SSL certificate for common name(CN) localhost, i can access this project on my machine but can't access using my machine public ip address.

Using terminal(inside example project) i run like $ruby application.rb

code of application.rb as below

require 'rubygems'
require 'sinatra'
require 'ios-cert-enrollment'

require 'sinatra/base'
require 'webrick'
require 'webrick/https'
require 'openssl'

IOSCertEnrollment.configure do |config|
  config.ssl_certificate_path = "./ssl_cert/server.crt"
  config.ssl_key_path = "./ssl_cert/server.key"
  config.base_url = "192.168.100.48"
  config.identifier = "192.168.100.48"
  config.display_name = "iOS Enrollment Server"
  config.organization = "Nolan Brown"
end

webrick_options = {
        :Port               => 3001,
        :Logger             => WEBrick::Log::new($stderr, WEBrick::Log::DEBUG),
        :DocumentRoot       => "/ruby/htdocs",
        :DoNotReverseLookup => false,
        :SSLEnable          => true,
        :SSLVerifyClient    => OpenSSL::SSL::VERIFY_NONE,
        :SSLCertificate     => IOSCertEnrollment::SSL.certificate,
        :SSLPrivateKey      => IOSCertEnrollment::SSL.key,
        :SSLCertName        => [ [ "CN",WEBrick::Utils::getservername ] ]
}

class MyServer < Sinatra::Base

  get '/' do
    '<a href="/enroll">Enroll</a>'
  end

  get '/enroll' do 
    signed_certificate = IOSCertEnrollment::Profile.new("/profile").service().sign()

    ## Send
    content_type signed_certificate.mime_type
    signed_certificate.certificate  

  end

  post '/profile' do  
    p7sign = IOSCertEnrollment::Sign.verify_response(request.body.read)
    if IOSCertEnrollment::Sign.verify_signer(p7sign)

      profile = IOSCertEnrollment::Profile.new()
      profile.icon = File.open(File.expand_path('<PATH TO YOUR ICON>', __FILE__))
      profile.display_name = "iOS Enrollment Server"
      profile.description = "Easy access to web"
      profile.label = "iOS Enrollment"
      profile.url = "<URL FOR WEBCLIP>"
      encrypted_profile = profile.webclip().encrypt(p7sign.certificates)
      signed_profile = profile.configuration(encrypted_profile.certificate).sign()

    else
      # Get returned device attributes
      device_attributes = IOSCertEnrollment::Device.parse(p7sign)  

      # "UDID", 
      # "VERSION",
      # "PRODUCT",          
      # "DEVICE_NAME",
      # "MAC_ADDRESS_EN0",
      # "IMEI",
      # "ICCID"

      ## Validation
      profile = IOSCertEnrollment::Profile.new("/scep")
      signed_profile = profile.encrypted_service().sign()

    end
    ## Send 
    content_type signed_profile.mime_type
    signed_profile.certificate

  end

  get '/scep' do
    case params['operation']
    when "GetCACert"
      registration_authority = IOSCertEnrollment::Sign.registration_authority
      content_type registration_authority.mime_type
      registration_authority.certificate

    when "GetCACaps" 
      content_type "text/plain"
      IOSCertEnrollment::Sign.certificate_authority_caps
    else
      "Invalid Action"
    end
  end

  post '/scep' do
    if params['operation'] == "PKIOperation"
      signed_pki = IOSCertEnrollment::Sign.sign_PKI(request.body.read)

      content_type signed_pki.mime_type
      signed_pki.certificate

    else
      "Invalid Action"
    end
  end      
end

Rack::Handler::WEBrick.run MyServer, webrick_options

Note- application.rb code is as it is given in example-project with this library, only thing i am changing/putting is SSL library path.

My question is -

1) is it possible to test SCEP using localhost ?

2) if possible, how can i access localhost using IP address

Answer 1

Second question's answer:

Add 192.168.100.48 you-perfect-domain.local to /etc/hosts file at the device who can share Wi-Fi to your iOS device.

And open you-perfect-domain.local:3001 on iOS device browser

I hope it will work.