Class: SockJS::Transports::IFrame

Inherits:
Endpoint
  • Object
show all
Defined in:
lib/sockjs/transports/iframe.rb

Constant Summary collapse

BODY = 
<<-EOB.freeze
<!DOCTYPE html>
<html>
<head>
  <meta http-equiv="X-UA-Compatible" content="IE=edge" />
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
  <script>
    document.domain = document.domain;
    _sockjs_onload = function(){SockJS.bootstrap_iframe();};
  </script>
  <script src="{{ sockjs_url }}"></script>
</head>
<body>
  <h2>Don't panic!</h2>
  <p>This is a SockJS hidden iframe. It's used for cross domain magic.</p>
</body>
</html>
EOB

Instance Attribute Summary

Attributes inherited from Endpoint

#connection, #options

Attributes included from Endpoint::ClassMethods

#method, #prefix

Instance Method Summary collapse

Methods inherited from Endpoint

#build_error_response, #build_response, #call, #empty_string, #error_content_type, #format_frame, #handle, #handle_http_error, #initialize, #inspect, #response_class

Methods included from Endpoint::ClassMethods

#add_route, #add_routes, #endpoints, #register, #route_conditions, #routing_prefix

Constructor Details

This class inherits a constructor from SockJS::Endpoint

Instance Method Details

#body ⇒ Object 



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# File 'lib/sockjs/transports/iframe.rb', line 37

def body
  @body ||= BODY.gsub("{{ sockjs_url }}", options[:sockjs_url])
end

#digest ⇒ Object 



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# File 'lib/sockjs/transports/iframe.rb', line 41

def digest
  @digest ||= Digest::MD5.new
end

#etag ⇒ Object 



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# File 'lib/sockjs/transports/iframe.rb', line 45

def etag
  '"' + digest.hexdigest(body) + '"'
end

#handle_request(request) ⇒ Object

Handler.



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# File 'lib/sockjs/transports/iframe.rb', line 50

def handle_request(request)
  if request.fresh?(etag)
    SockJS.debug "Content hasn't been modified."
    response = build_response(request)
    response.status = 304
    response.finish
    return response
  else
    SockJS.debug "Deferring to Transport"
    response = build_response(request)
    response.set_content_type(:html)
    response.write(body)
    response.finish
    return response
  end
end

#setup_response(request, response) ⇒ Object 



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# File 'lib/sockjs/transports/iframe.rb', line 30

def setup_response(request, response)
  response.status = 200
  response.set_header("ETag", self.etag)
  response.set_cache_control
  response
end