HTTP / HTTPS Proxy Server V2

A multithreaded HTTP/HTTPS proxy server.

Features

• HTTP Version
  • supported HTTP/1.1
• Request
  • maximum size of 65536 bytes
  • supported methods: GET, POST, CONNECT
  • supported headers: Accept-Encoding
• Response
  • supported headers: Content-Length, Date, Last-Modified, Etag, Expires, Transfer-Encoding, Cache-Control
  • supported transfer encodings: chunked
• Caching
  • response caching with FIFO replacement policy
  • supported methods: GET
  • supported status codes: 200 OK
  • supported Cache-Control entries for cacheability and validation: private, public no-store, no-cache, must-revalidate, max-age

Requirements

• OS: Linux / MacOS
• C++ verison: C++20
• tools: cmake3.7+
• Packages: pthread, GoogleTest, gcov, lcov

Run It Locally

The process runs on port 8080

mkdir build
cd build
cmake ..
make -j
./unit_tests # optional, unit testing
./http-proxy 

Production Deployment

The docker container exposes port 8080

sudo mkdir -p /var/log/http-proxy # create log folder on host
sudo chown 1000:1000 /var/log/http-proxy # change owner, so can be mounted by docker
docker-compose build
docker-compose up -d

Improvements Upon V1

• refactored codebase for better readability and extensibility
• added GoogleTest unit testing infrastructure
• migrated build infrastructure from make to cmake
• used C++20 for easier support for multithreading, locking and memory management, and access to high-level libraries
• improved error handling and memory management

Known Issues

• running in docker results in network degradation, CONNECT requests are intermittently unreachable