DZone Snippets: TCPServer code

Post a message to identi.ca using XMPP via HTTP

jrobertson (James Robertson) — Tue, 08 Jul 2008 20:03:11 GMT

This Ruby code posts a message to identi.ca using XMPP which uses a simple web server.



#!/usr/bin/ruby



require 'rubygems'  

require 'socket'

require 'open-uri'

require 'xmpp4r-simple'



server = TCPServer.new('127.0.0.1', 9090)

messenger = Jabber::Simple.new('my-bot@gmail.com', "bot-password")



while (session = server.accept)

  request = session.gets

  project = request[/(\w+)\?msg=(.*) HTTP\/1.1/,1]

  msg = URI.unescape($2)



  puts request

  session.print "HTTP/1.1 200/OK\rContent-type: text/html\r\n\r\n"

  session.print "Response from Jeeves\r\n"

  session.print ""



  if project != '' and msg != '' then

    case project

      when 'identica'

        messenger.deliver("update@identi.ca", msg)

    else

      puts "Project #{project} wasn't found on this server"

    end

  end

  session.print URI.unescape(request)



  session.print ""

  session.close

end

To post the message you would type your message within the browser URL e.g. http://127.0.0.1:9090/identica?msg=just%20testing%20xmpp4r-simple%20from%20tcpserver1

One-line web server in Ruby

ntk () — Wed, 23 Apr 2008 13:22:36 GMT





# From: http://www.ntecs.de/blog/articles/2008/02/09/the-worlds-smallest-webserver

# Author: Michael Neumann

# ... point your browser to http://localhost:3125/etc/motd



ruby -rsocket -e 's=TCPServer.new(5**5);loop{_=s.accept;_<<"HTTP/1.0 200 OK\r\n\r\n#{File.read(_.gets.split[1])rescue nil}";_.close}'

Run TCPServer as a simple Web server

jrobertson (James Robertson) — Thu, 10 Apr 2008 14:05:56 GMT

A TCPServer accepts incoming TCP connections. Here is a Web server that listens on a given port and returns the time.



require 'socket'

port = (ARGV[0] || 80).to_i

server = TCPServer.new('localhost', port)

while (session = server.accept)

  puts "Request: #{session.gets}"

  session.print "HTTP/1.1 200/OK\r\nContent-type: text/html\r\n\r\n"

  session.print "#{Time.now}\r\n"

  session.close

end

This code was copied from Programming Ruby: The Pragmatic Programmer's Guide [rubycentral.com] while looking for information on Ruby CGI global variables.