RateLimitingRequestsModule

This is a rate-limiting HTTP requests module that stops a priticular requestor from making too many http requests within a particular period of time.

Overview

inside src, there is the main.ccp of the application.

Requests Handle

This module handles the HTTP requests. Members:

• requests_limit - the limit of the number of requests. Default 100. Can be easily set to a different value by calling the setter of requests_limit.
• current_requests_limit - the current request limit. Every request reduce this limit by 1,
• timer_rate_in_sec - the rate limiting. Default 60 seconds. After the time reaches the rate, the current_requests_limit is reset and the counting starts from the beginning. Can be easily set to a different value by calling the setter of timer_rate_in_sec.
• handleNewRequest - this method receives a URL request and checks if the number of requests reached its limit. If not, the method returns a response object with error code 200 (okay) and empty error message. If yes, the method returns a response object with error code 429 (too many requests) and error message "Rate limit exceeded. Try again in #(n) seconds".
• updateRequestsLimit - this method updates current_requests_limit to be requests_limit after the timer expired.

Prerequisites

• Cmake (minimal required version 3.2)
• git
• C++ supporting C++14
• Python 2.7
• Conan installed with the bincrafters remote added

Intalling conan

• pip install conan
• conan remote add bincrafters 'https://api.bintray.com/conan/bincrafters/public-conan'

Building the Module

• git clone --recursive https://github.com/sharonen/RateLimitingRequestsModule.git
• cd RateLimitingRequestsModule
• mkdir build && cd build
• conan install ..
• cmake ..
• make

Running unit tests

• cd RateLimitingRequestsModule/build
• ctest -V