# antirez/smallchat

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7,509 stars · 844 forks · C

## Links

- GitHub: https://github.com/antirez/smallchat
- awesome-repositories: https://awesome-repositories.com/repository/antirez-smallchat.md

## Description

Smallchat is a minimal implementation of a concurrent network server and TCP-based chat system designed as a demonstration of C socket programming. It provides a basic server and client architecture that enables real-time text communication between multiple connected users.

The project focuses on the implementation of a networked chat server that handles simultaneous client sessions. It utilizes a centralized broadcasting model to route incoming text from one client to all other active participants.

The system manages concurrent client connections and session tracking using socket descriptors and synchronous I/O multiplexing. Its primary capabilities cover server-side network listening, client-side messaging, and the management of active network sessions.

## Tags

### Networking & Communication

- [TCP Socket Programming](https://awesome-repositories.com/f/networking-communication/tcp-socket-programming.md) — Provides a comprehensive demonstration of TCP socket programming, including address binding and byte stream exchange.
- [TCP Chat Servers](https://awesome-repositories.com/f/networking-communication/asynchronous-socket-libraries/non-blocking-tcp-servers/tcp-chat-servers.md) — Provides a minimal implementation of a networked TCP chat server and client.
- [Client-to-Client Messaging](https://awesome-repositories.com/f/networking-communication/communication-platforms-services/messaging-notification-systems/messaging-services/message-broker-infrastructure/publish-subscribe-messaging/client-to-client-messaging.md) — Enables real-time client-to-client message exchange via a centralized broadcast mechanism. ([source](https://github.com/antirez/smallchat/blob/main/smallchat-server.c))
- [Client Session Management](https://awesome-repositories.com/f/networking-communication/network-reliability-diagnostics/connection-session-management/client-session-management.md) — Tracks and maintains the state of individual user connections using socket descriptors. ([source](https://github.com/antirez/smallchat/blob/main/smallchat-server.c))

### Content Management & Publishing

- [Real-Time Chat Software](https://awesome-repositories.com/f/content-management-publishing/chat-community-management/real-time-chat-software.md) — Implements a basic real-time chat system allowing multiple users to communicate via text.

### Data & Databases

- [Chat Message Broadcasting](https://awesome-repositories.com/f/data-databases/record-updating/live-update-subscriptions/event-stream-broadcasters/custom-event-broadcasting/chat-message-broadcasting.md) — Implements real-time relay of text messages from a single client to all other connected participants.

### Education & Learning Resources

- [Concurrent Connection Server Designs](https://awesome-repositories.com/f/education-learning-resources/architectural-design-guides/concurrent-connection-server-designs.md) — Implements a server design capable of managing many concurrent connections for low-latency data exchange.
- [Server Implementations](https://awesome-repositories.com/f/education-learning-resources/educational-resources/reference-and-media/books-docs-reference/code-examples/reference-implementations/server-implementations.md) — Provides a practical, educational implementation of a network server that handles concurrent clients. ([source](https://github.com/antirez/smallchat/blob/main/.gitignore))
- [Network Protocol Prototypes](https://awesome-repositories.com/f/education-learning-resources/network-protocol-prototypes.md) — Serves as a minimal working example to demonstrate basic message broadcasting and connection logic.
- [Socket Programming Tutorials](https://awesome-repositories.com/f/education-learning-resources/socket-programming-tutorials.md) — Provides an educational example of the socket lifecycle and data transmission between servers and clients.

### Software Engineering & Architecture

- [Client-Server Architectures](https://awesome-repositories.com/f/software-engineering-architecture/client-server-architectures.md) — Utilizes a classic client-server architecture where a central server handles requests and responses for remote clients.
- [Session Identifiers](https://awesome-repositories.com/f/software-engineering-architecture/network-identifiers/session-identifiers.md) — Tracks individual network sessions using unique system socket descriptors as identifiers.

### Web Development

- [Network Client Concurrency](https://awesome-repositories.com/f/web-development/backend-development/request-response-handling/http-request-handling/multi-process-request-handling/network-client-concurrency.md) — Manages multiple simultaneous network connections to enable real-time communication between many users.

### Operating Systems & Systems Programming

- [Synchronous Multiplexing](https://awesome-repositories.com/f/operating-systems-systems-programming/kernel-core-internals/process-and-memory-management/memory-management-systems/native-resource-lifecycle-managers/file-descriptor-managers/file-descriptor-redirection/platform-specific-i-o-multiplexing/synchronous-multiplexing.md) — Handles multiple concurrent clients by multiplexing network descriptors within a single thread.