Vagrantfile snippet to check that apache_server_name resolves to vm_ip

Vagrantfile.rb

# Vagrantfile snippet to check that apache_server_name resolves to vm_ip (i.e.
# assuming that the rest of the Vagrantfile configures a VM in this way).

apache_server_name = "myproject.local"
vm_ip = "192.168.33.111"

begin 
  res = Socket::getaddrinfo(apache_server_name, nil, Socket::AF_INET) 
rescue SocketError => e 
  # s doesn't resolve to anything at all 
  print "error: [#{apache_server_name}] does not resolve to [#{vm_ip}] (edit /etc/hosts)\n" 
  exit 
end
if !(Socket::getaddrinfo(apache_server_name, nil, Socket::AF_INET).map { |ip| ip[3] }).any? { |ip| ip == vm_ip } then
  # s resolves to "wrong" IP
  print "error: [#{apache_server_name}] does not resolve to [#{vm_ip}] (edit /etc/hosts)\n"
  exit
end