require "http/server"

server = HTTP::Server.new(8080) do |context|
  context.response.content_type = "text/plain"
  context.response.print "Hello world! The time is #{Time.now}"
end

puts "Listening on http://127.0.0.1:8080"
server.listen

Error in httpserv.cr:3: no overload matches 'HTTP::Server.new' with type Int32
Overloads are:
 - HTTP::Server.new(handlers : Array(HTTP::Handler), &handler)
 - HTTP::Server.new(&handler)
 - HTTP::Server.new(handlers : Array(HTTP::Handler))
 - HTTP::Server.new(handler : HTTP::Handler | HTTP::Handler::Proc)

server = HTTP::Server.new(8080) do |context|