server.cpp

#include <unistd.h> 
#include <stdio.h> 
#include <sys/socket.h> 
#include <stdlib.h> 
#include <netinet/in.h> 
#include <string.h> 
#define PORT 8080

int main(int argc, char const *argv[]) 
{ 
	int server_fd = 0;
    int new_socket = 0; 
	struct sockaddr_in address; 
	int opt = 1; 
	int addrlen = sizeof(address); 
	char buffer[1024] = {0}; 
	const char *hello = "Hello from server"; 
	
	// Creating socket file descriptor 
	if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) 
	{ 
		perror("socket failed"); 
		exit(EXIT_FAILURE); 
	} 
	
	address.sin_family = AF_INET; 
	address.sin_addr.s_addr = INADDR_ANY; 
	address.sin_port = htons( PORT ); 
	
	// Attach socket to the port 8080 
	if (bind(server_fd, (struct sockaddr *)&address, 
								sizeof(address))<0) 
	{ 
		perror("bind failed"); 
		exit(EXIT_FAILURE); 
	} 
    // Setup listen queue
	if (listen(server_fd, 3) < 0) 
	{ 
		perror("listen"); 
		exit(EXIT_FAILURE); 
	} 
 	printf("Waiting for connection...\n");
	if ((new_socket = accept(server_fd, (struct sockaddr *)&address, 
					(socklen_t*)&addrlen))<0) 
	{ 
		perror("accept"); 
		exit(EXIT_FAILURE); 
	} 
  	printf("Waiting for data...\n");
	read( new_socket , buffer, 1024); 
	printf("Received: %s\n",buffer ); 
	send(new_socket , hello , strlen(hello) , 0 ); 
	printf("Hello message sent\n"); 
	return 0; 
}