TCPChatSystem

A Simple TCP Chat System Written in Go. The purpose is to explore the functionality of goroutines, channels and concurrency in Go. I have also tried to use interfaces to implement certain features(Reader/Writer)

Features

1. Supports multiple clients
2. Uses basic TCP/IP Protocol to enable messaging
3. You can start the server in one terminal and start respective clients in new terminals as required.
4. Server logs all actions by clients via logrus - configurable to be text or JSON friendly
5. Supports custom client name, client joining and exit as required with custom keywords

I/O Handler

1. I/O Handler is implementd via interface models.ioInputOutputHandler which is a interface that supports any reader or writer interface to send messages to and read message from in client.
2. Currently the interface is implemented in a terminalIOHandler. Reading or writing from file can also be done by implementing the interface.

Usage

The Go Module contains two packages - server and client respectively.

To start the server navigate the server folder and start the server

cd server/main
go run main.go

To start a client navigate the server folder and start the client

cd client/main
go run main.go

Customising

You can modify the settings in Client and Server via the *.settings.json file in each package

Setting	Purpose
defaultChatHost	Address for chat server
defaultChatHostPort	Port on which server is listening
bufferSize	Size of buffer to queue messages
maxClients	Maximum number of clients that can connect

You can customize the logging by modifying the struct log.TextFormatter.

Refer https://github.com/sirupsen/logrus for more details

func InitializeLogging(logFile string) {
	var file, err = os.OpenFile(logFile, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
	if err != nil {
		fmt.Println("Could Not Open Log File : " + err.Error())
	}
	log.SetFormatter(&log.TextFormatter{
		DisableColors: true,
		FullTimestamp: true,
	})
	log.SetOutput(file)
}

Built Using

• Go
• net/http Package
• Logrus for logging
• Encoding/JSON for loading config files