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

struct packet {
    char oper[5];
    int int1;
    int int2;
};

struct resultpacket {
    int success;
    int result;
};

// Driver code
int main() {
	int sockfd;
	char buffer[10];
	char *hello = "Hello from client";
	struct sockaddr_in	 servaddr;

	// Creating socket file descriptor
	if ( (sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0 ) {
		perror("socket creation failed");
		exit(EXIT_FAILURE);
	}

	memset(&servaddr, 0, sizeof(servaddr));

	// Filling server information
	servaddr.sin_family = AF_INET;
	servaddr.sin_port = htons(8080);
	servaddr.sin_addr.s_addr = INADDR_ANY;

	int n, len;

	sendto(sockfd, (const char *)hello, strlen(hello),
		MSG_CONFIRM, (const struct sockaddr *) &servaddr,
			sizeof(servaddr));
	printf("Hello message sent.\n");

	n = recvfrom(sockfd, (char *)buffer, 10,
				MSG_WAITALL, (struct sockaddr *) &servaddr,
				&len);
	buffer[n] = '\0';
	printf("Server : %s\n", buffer);

	close(sockfd);
	return 0;
}