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

#define MAX_DATA_LEN 8192

int main(int argc, char *argv[]){
    int sockfd = socket(AF_INET, SOCK_STREAM, 0);
    struct sockaddr_in server_address;

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

    /* setup server address and port */
    server_address.sin_family = AF_INET;
    server_address.sin_port = htons(1711);
    inet_aton("127.0.0.1", &server_address.sin_addr);

    /* connect to the server */
    if(connect(sockfd, (struct sockaddr *)&server_address, sizeof(server_address)) == -1){
        perror("connection failed");
        close(sockfd);
        exit(EXIT_FAILURE);
    }

    /* connected. send some data to server */
    char msg[] = "hello server";
    int bytes_sent = write(sockfd, msg, strlen(msg));
    printf("%d bytes written to server!\n", bytes_sent);

    /* waiting for response and read when available */
    char *read_buffer = malloc(MAX_DATA_LEN + 1);
    int bytes_read = read(sockfd, read_buffer, MAX_DATA_LEN);
    read_buffer[bytes_read] = '\0';
    printf("Data:\n%s\n", read_buffer);

    exit(EXIT_SUCCESS);
}