A$18-$ Implement Terminal protocol using Sockets

Pre$-$requisites:

Knowledge about system calls, How to read and understand $$man pages$.$

Good knowledge about TCP$/$IP Protocol

Objective:

The idea of terminal protocol is to implement a protocol using sockets.

Requirements:

$1.$ Create $5$ main server and $1$ relay agent server.

$2.$ The $5$ main servers perform $5$ different arithmetic operations.

$3.$ The IP address and Port information of main servers are hard coded in agent server.

$4.$ The client first contacts the agent, agent then provide client with server information according to the operand.

$5.$ The client then connects to required server and send the operands.

$6.$ The server performs the operation and send the result to the client, which prints it on console.

Sample output:

$./$relay

INFO: created relay socket

LISTENING: relay server is listening

$.............$

ACCEPTED: relay server accepted connection$$

$./$server$\_$plus

INFO: created server socket

LISTENING: plus server is listening

ACCEPTED: accepted a connection

Client data : $1020+$

Result is $30$

Sending result to client...

$./$client

Enter num$1$: $10$

Enter num$2$: $20$

Enter arithmetic operator: $+$

INFO: Created relay socket

SUCCESS: relay connection successful

SERVER IP $127\mathrm{.}0\mathrm{.}0\mathrm{.}1$

SERVER PORT $6000$

INFO: Created server socket

SUCCESS: Server connection successful

RESULT: $30$

Note : You should run $5$ different server programs in $5$ different tabs$($To perform different Arithmetic Operation$)$ using c program