HTTP Server
- HTTP Server

HTTP Server

A slightly more interesting example is an HTTP Server:

require "http/server"

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

address = server.bind_tcp 8080
puts "Listening on http://#{address}"
server.listen

The above code will make sense once you read the whole language reference, but we can already learn some things.

You can require code defined in other files:

  require "http/server"

You can define local variables without the need to specify their type:

  server = HTTP::Server.new ...

The port of the HTTP server is set by using the method bind_tcp on the object HTTP::Server (the port set to 8080). ``` address = server.bind_tcp 8080


  * You program by invoking [methods](<$syntax_and_semantics-classes_and_methods.html>) (or sending messages) to objects.

HTTP::Server.new ... ... Time.local ... address = server.bind_tcp 8080 ... puts "Listening on http://#{address}" ... server.listen

  * You can use code blocks, or simply [blocks](<$syntax_and_semantics-blocks_and_procs.html>), which are a very convenient way to reuse code and get some features from the functional world:

HTTP::Server.new do |context| ... end

  * You can easily create strings with embedded content, known as string interpolation. The language comes with other [syntax](<$syntax_and_semantics-literals.html>) as well to create arrays, hashes, ranges, tuples and more:

"Hello world! The time is #{Time.local}" ```