CODEWITHSUNDEEP
rubycallbackwebserver
samesame
samesame

Reputation: 13

Ruby webserver - callback when the request has been served

Is there any way to know when a request has been served by a ruby webserver (webrick, evma_httpserver, whatever?)

Goal is to serve 2 static files and shutdown server after the second file has been served to the client. It seems i can not find anything related to this, so any pointers are welcome..

Upvotes: 1

Views: 81

Answers (1)

Roman Kiselenko
Roman Kiselenko

Reputation: 44360

Just shutdown server then the second file is served. Here is an example:

server.rb

require 'webrick'

server = WEBrick::HTTPServer.new :Port => 8000, :DocumentRoot => '/'
server.mount_proc '/' do |req, res|
  # response with simple html body
  res.body = '
  <html>
    <head>
      <title>My Webpage</title>
      <!-- first file -->
      <link rel="stylesheet" href="/one_file.css" type="text/css">
      <!-- second file -->
      <link rel="stylesheet" href="/second_file.css" type="text/css">
    </head>
    <body>
      <h1>Hello world!</h1>
    </body>
  </html>'
end
server.mount_proc '/one_file.css' do |req, res|
  res.body = 'h1 { color: blue; }'
end
server.mount_proc '/second_file.css' do |req, res|
  res.body = 'h1 { color: red; }'
  puts "Shutdown server !"
  server.shutdown
end
server.start

Run server.rb:

$~  ruby server.rb 
[2018-09-26 11:02:21] INFO  WEBrick 1.3.1
[2018-09-26 11:02:21] INFO  ruby 2.4.1 (2017-03-22) [x86_64-linux]
[2018-09-26 11:02:21] INFO  WEBrick::HTTPServer#start: pid=24224 port=8000
::1 - - [26/Sep/2018:11:02:24 MSK] "GET / HTTP/1.1" 200 262
- -> /
::1 - - [26/Sep/2018:11:02:24 MSK] "GET /one_file.css HTTP/1.1" 200 19
http://localhost:8000/ -> /one_file.css
::1 - - [26/Sep/2018:11:02:24 MSK] "GET /second_file.css HTTP/1.1" 200 18
http://localhost:8000/ -> /second_file.css
::1 - - [26/Sep/2018:11:02:24 MSK] "GET /favicon.ico HTTP/1.1" 200 262
http://localhost:8000/ -> /favicon.ico
[2018-09-26 11:02:25] INFO  going to shutdown ...
[2018-09-26 11:02:25] INFO  WEBrick::HTTPServer#start done.
$~

Both files are served:

enter image description here

Upvotes: 1

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