Pre-requistes

Install opam
```
sudo apt install opam
```

Create a switch for OCaml 4.14.0

opam init -y
opam sw create 4.14.0
eval $(opam env)

Clone the repo

git clone git@github.com:shubhamkumar13/ahrefs-chat-app.git

Install the opam packages using the opam_packages.export
```
cd /path/to/ahrefs-chat-app
opam sw import opam_packages.export
```
N.B. : If there are errors while importing the packages where related to conf-gmp and conf-libev run the following commands
```
 sudo apt install libgmp-dev libev-dev
```

How to use this app

Build the app

cd /path/to/ahrefs-chat-app
dune build @all

To start a server

dune exec main

as soon as you execute the above command you should see a prompt as shown below

❯ dune exec main
  Choose which port you want to run your application in

  {Please make sure that the port selected
  should be same for server and client, thank you} :

               =>

type in the port number that you want, do remember that the port for server and client should be same.

Let's choose 8080 and press enter, this would bring you down to the next option menu as shown below. (If you don't choose anything 8080 is the default port)

❯ dune exec main
  Choose which port you want to run your application in

      {Please make sure that the port selected
      should be same for server and client, thank you} :

              => 8080
  Choose which application you want to run :

      1. For running a server choose 1

      2. For running a client choose 2

              =>

Now if you haven't started a server choosing option 2 would end up with refusal of connection. So choose 1, by typing 1. You will se a prompt : Waiting for socket connection : which would change to :
```
  Waiting for socket connection :
  Client connected : 127.0.0.1
  Enter message :
```
For choosing to run a client choose option 2 This will show the following prompt
```
Enter message :
```
now you can send and receive messages from client and server. Fin.