TCP-Server-Clients-Socket-Application

Introduction

We Implemet an application in C++ on Linux to create the connections between multiple clients and server using TCP

Description of The Features

• Server Side:

  ​ 1. Create the server socket based on TCP.

  ​ 2. Listening on a target port (Default: 8080).

  ​ 3. Support to accept multiple clients.

  ​ 4. Real-time receive the clients' messages and echo back to the responding clients in time.

  ​ 5. Implement this application in C/C++ on Linux, and multi-thread is applied.

• Client Side:

  ​ 1. Two options to start the client service (Default option and command line option).

  ​ 2. Send the message to the server periodically (one time each second).

  ​ 3. Receive the server's response in time, and print the response message on the terminal.

  ​ 4. The main thread is used to deal with "send task", the child thread is used to deal with "receive/print task".

  ​ 5. Implement this application in C/C++ on Linux.

Code File Stucture

Code Style

Build and Run

Build the programe

git clone https://github.com/Jinxin-Xiong/TCP-Server-Clients-Socket-Application.git
cd TCP-Server-Clients-Socket-Application
sudo make

• Service would be generated in parent directory

• Run server before cliens

• Ctrl + c to interrupt blocking server and client process

Configure some common parameters in CommonHead.h []

• Set server IP, 127.0.0.1 is just for local test

 #define SERVER_IP "127.0.0.1"   

• Set server port

 #define SERVER_PORT 8080  

• Set the maximum number of connected clients

 #define MAXCLIENTNUM 100 

Run Server TCP Service

• Run server service on the server side:

./TCPServerClients_server

​ The status after you start the server service (Listen to the target port)：

Run Client TCP Service

• Run client on client side

​ There are two options：

1. Default option: The Server IP and Port are default set in CommonHead.h;
2. Command Line option: Type Server IP and Port as commond line

/*****  Option 1: Default option (Default IP: 127.0.0.1; Default Port: 8080)    *****/
./TCPServerClients_client

/*****  Option 2: Command Line option    *****/
./TCPServerClients_client IP Port (ex. ./TCPServerClients_client 127.0.0.1 8080) 

![Communication with Server](

Demonstration

• Tips: Since there is only one desktop in working place, I just run one server terminal and six client terminals in the same computer (local network). But generally, this program can support much more than six clients

• In future, it would be necessary to test this program in the real server-multi client scenario: