easychat

Small client-server app demonstrates how to organize live chat without persistent connection. The benefits are

1. Number of server connections are NOT increases
2. Simple logic without connect/recconnection code
3. Server may be tested more easily

How it works

1. Client sends getUpdates request, server sends reply if updates for this client found, otherwise it waits up to 60 sec. If updates appeared server returns it immediately
2. After getUpdate response client send request again. If client stops to send these requests, server assumes that client disconnected and removes user from chat. So, server has only one active connection with client

Build and run

Preconditions

Install go 1.19+. Just download go installer for your platform here and install. Then open command prompt or bash and check go tools availability

$ go version

Build

Clone the project, open command prompt or bash in root folder and run

$ go build

Run

Server

$ ./easychat server

Client

$ ./easychat client