How to do it…

1. Define a variable of type sockaddr_i.
2. Invoke the socket function to create a socket. The port number that's specified for the socket is 2000.
3. Invoke the connect function to initiate a connection to the socket.
4. Because we are working on the local machine, the localhost address 127.0.0.1 is assigned to the socket.
5. Invoke the recv function to receive the message from the connected socket. The message that's read from the socket is then displayed on the screen.

The client program, clientprog.c, for reading a message that's sent from the server is as follows:

#include <stdio.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <string.h>
#include <arpa/inet.h>

int main(){
    int clientSocket;
    char str[255];
    struct sockaddr_in client_Address;
    socklen_t address_size;
    clientSocket = socket(AF_INET, SOCK_STREAM, 0);
    client _Address.sin_family = AF_INET;
    client _Address.sin_port = htons(2000);
    client _Address.sin_addr.s_addr = inet_addr("127.0.0.1");
    memset(client _Address.sin_zero, '\0', sizeof client_Address.sin_zero); 
    address_size = sizeof server_Address;
    connect(clientSocket, (struct sockaddr *) &client_Address, address_size);
    recv(clientSocket, str, 255, 0);
    printf("Data received from server: %s", str);  
    return 0;
}

Let's go behind the scenes.