# Diarkis Client

**Diarkis Client** is a lightweight, high-performance networking SDK designed for real-time, distributed applications such as **online multiplayer games**, **simulations**, and **edge-connected systems**. It serves as the client-side interface to the **Diarkis server cluster**, providing robust tools for seamless, low-latency communication, synchronization, and interaction across decentralized networks.

#### **Key Features and Capabilities**

**Protocol Support**

* **Supports UDP, TCP, and Diarkis RUDP (Reliable UDP)** for flexible communication across various network conditions.
* RUDP includes built-in **retransmission, packet ordering**, and **MTU fragmentation handling**, optimized for real-time reliability.

#### **Modular Communication Integration**

Diarkis Client integrates seamlessly with all core Diarkis modules, enabling developers to build sophisticated networked applications with modular, event-driven components:

* **MatchMaker:** Enables **real-time, decentralized matchmaking** with cluster-wide in-memory queue management. Supports dynamic team formation, backfill, and concurrent match operations without centralized bottlenecks.
* **Room:** Provides **server-relayed group communication** and **object synchronization**, allowing multiple users to interact within a shared digital space.
* **Session:** Facilitates lightweight **one-to-many messaging**, user presence tracking, and temporary shared property storage among session members.
* **Field:** Enables **cluster-wide spatial interaction**, allowing users to detect and exchange data with nearby entities across different servers based on positional data.
* **DM (Direct Message):** Supports **private, one-to-one communication** using a server-relay model with low configuration overhead.
* **P2P:** Establishes **direct peer-to-peer communication** with NAT traversal support and automatic **fallback to server-relay** when needed.
* **Notifier:** Delivers **unidirectional server-to-client broadcasts**, ideal for real-time alerts, global notifications, and session-wide event propagation.

**Cross-Platform Compatibility**

* Available in **C++** and **C#**, with dedicated plugins for **Unreal Engine** and a full SDK for **Unity Engine**, allowing seamless integration into existing game and simulation projects.
* Compatible with **Windows, macOS, Linux**, **iOS, Android,** and **game consoles such as PlayStation, Xbox, and Nintendo Switch**.

**Persistent Cluster Connectivity**

* Maintains an active connection with the Diarkis server cluster for **session persistence**, **state recovery**, and **resilient client-server communication**, even during server failovers or migration.

**Event-Driven Architecture**

* Built with an **event-driven communication model**, Diarkis Client allows developers to subscribe to and react to **network events**, such as user joins/leaves, object updates, message receptions, and connection status changes.


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