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RFlow-Components-HTTP

Build Status

A gem containing HTTP-specific components and data types for RFlow (https://github.com/redjack/rflow).

Data Types

  • RFlow::Message::Data::HTTP::Response - an HTTP request RFlow message
  • RFlow::Message::Data::HTTP::Request - an HTTP response RFlow message

Server

The server component (RFlow::Components::HTTP::Server) implements a HTTP server based on eventmachine_httpserver. The component accepts incoming HTTP connections (according to its configuration, see below), marshals the HTTP request into an RFlow message, annotates the message with a bit of provenance (see below) and then sends the message out its request_port. When a HTTP response message is received on its response_port, the component checks the provenance to see if it matches an underlying TCP/HTTP connection and, if so, creates an actual HTTP response from the incoming message and send it to the client.

The HTTP request message sent from the HTTP server component utilizes the RFlow::Message provenance feature to annotate a request message with a bit of metadata that allows subsequent response messages to be matched to their underlying TCP/HTTP connections. This means that any component that processes HTTP request messages to generate response messages must copy the provenance from the request message to the response message.

Configuration

  • listen - the IP address on which to listen, defaults to '127.0.0.1'
  • port - the port on which to listen, defaults to '8000'

Examples

Limitations

The underlying eventmachine_httpserver has two limitations that we've run across:

Client

Not yet implemented completely

License

Copyright 2014 RedJack LLC

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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HTTP components for RFlow

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