Class: Server::Response

Inherits:
Object
  • Object
show all
Defined in:
lib/server/response.rb

Overview

This helper function parses the extension of the requested file and then looks up its content type.

Instance Method Summary collapse

Constructor Details

#initialize(request) ⇒ Response

Returns a new instance of Response.



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# File 'lib/server/response.rb', line 23

def initialize(request)
  @request = request
  @socket  = request.socket
end

Instance Method Details

#content_type(file) ⇒ Object 



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# File 'lib/server/response.rb', line 40

def content_type file
  ext = File.extname(file).split(".").last
  CONTENT_TYPE_MAPPING.fetch(ext, DEFAULT_CONTENT_TYPE)
end

#print(msg) ⇒ Object 



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# File 'lib/server/response.rb', line 28

def print msg
  @socket.print msg
end

#send(code, message, type = 'text/html') ⇒ Object 



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# File 'lib/server/response.rb', line 76

def send(code, message, type='text/html')
  print "HTTP/1.1 #{code}\r\n" +
         "Content-Type: #{type}\r\n" +
         "Content-Length: #{message.size}\r\n" +
         "Connection: Keep-Alive\r\n" +
         "Vary: Accept-Encoding\r\n" +
         "\r\n" +
         message
end

#send_301(redirect_to) ⇒ Object 



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# File 'lib/server/response.rb', line 45

def send_301 redirect_to
  redirect_to.slice!("web_root")
  redirect_to = "http://#{@socket.addr[2]}:#{@socket.addr[1]}#{redirect_to}"

  Server.log "301: redirect to #{redirect_to}"

  # respond with a 301 error code to redirect
  print "HTTP/1.1 301 Moved Permanently\r\n" +
         "Location: #{redirect_to}\r\n"+
         "Connection: Keep-Alive\r\n"
end

#send_404 ⇒ Object 



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# File 'lib/server/response.rb', line 32

def send_404
  code    = '404 Not Found'
  message = "404: File '#{@request.path}' not found\n"
  Server.log "404: File not found #{@request.path}"

  send(code, message)
end

#send_file(path) ⇒ Object 



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# File 'lib/server/response.rb', line 57

def send_file path
  last_modified = File.mtime(path).httpdate
  File.open(path, "rb") do |file|
    print "HTTP/1.1 200 OK\r\n" +
           "Content-Type: #{content_type(file)}\r\n" +
           "Content-Length: #{file.size}\r\n" +
           "Connection: Keep-Alive\r\n" +
           "Vary: Accept-Encoding\r\n" +
           "Last-Modified: #{last_modified}\r\n" +
           "Date: #{Date.today.httpdate}\r\n" +
           "Expires: #{Date.today.next_year.httpdate}\r\n" +
           "Cache-Control: max-age=31536000,public\r\n" +
           "\r\n"

    # write the contents of the file to the socket
    IO.copy_stream(file, @socket)
  end
end