Server to echo HTTP requests.

http_echo_server.rb

# usage: ruby echo_server.rb
#
# Launches a WEBRick server that echos http requests back.  This can be
# useful when debugging HTTP requests.
#

require 'webrick'

# Setup server configuration
logger = WEBrick::Log.new
config = {
  :Port => 2000,
  :Logger => logger, 
  :AccessLog => [          
    [ logger, WEBrick::AccessLog::COMMON_LOG_FORMAT ],
    [ logger, WEBrick::AccessLog::REFERER_LOG_FORMAT ]]
}

# setup server
server = WEBrick::HTTPServer.new(config)
server.mount_proc("/") do |req, res|
  res.body << req.request_line
  res.body << req.raw_header.join('')
  
  # an extra line must be added to delimit the headers from the body.
  if req.body
    res.body << "\r\n"
    res.body << req.body 
  end
  
  res['Content-Type'] = "text/plain"
end

# set signals and run
['INT', 'TERM'].each do |signal|
  trap(signal) { server.shutdown }
end

server.start