libquicknet

Simple and small reliable UDP networking library for games

:exclamation: libquicknet is under development and not suitable for production code :exclamation:

The main target for this library are game prototypes or jam games that require a plug&play, fast networking subsystem.
Very easy to get up and running!

Features:

• Connection oriented UDP protocol with 3-step handshake
• Client<->Server and Peer-to-Peer support
• Low bandwidth usage
• Sequenced/Unsequenced Reliable/unreliable support
• Fast redundant acknowledgement system for reliable messages
• Server discovery (LAN only)
• Full checksum system to avoid message corruption
• Optional message merging on send
• Fixed selectable send rate
• Duplicated message detection
• Fake latency and packet loss support
• Ping and Round-Trip-Time estimation
• Cross-platform (Windows/Linux)

Future Features:

• Time synchronization
• RNG synchronization for deterministic systems
• Bitpacking & compression
• Symmetric encryption with key exchange on handshake
• NAT traversal and punch-through
• Endianness awareness
• Improve acknowledgement system

Installation

Drop all the source files in your project and compile!

Usage

• include quicknet_peer.h
• create a descendant of quicknet::Peer
• override OnConnection, OnDisconnection and OnGameMessage methods
• Define your custom game messages as instructed in quicknet_messagetypes.h
• Include your message IDs in quicknet_messagelookup.h
• Ready!

For a simple example please check test.cpp

Background

This library was written in one week, and even if its fully functional it still needs a lot of work to make it even better!
There's still a lot of hardcoded stuff that needs care, but I'll try to turn this into an easily customizable library.