#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <unistd.h>
#include <string.h>

int client_tcp() {
    char* hostname = "localhost";
    char* port = "9004";

    struct addrinfo hints = {0};
    hints.ai_family = AF_INET;
    hints.ai_socktype = SOCK_STREAM;
    hints.ai_protocol = IPPROTO_TCP;

    struct addrinfo* res;
    int err_ret = getaddrinfo(hostname, port, &hints, &res);

    if (err_ret != 0) {
        fprintf(stderr, "getaddrinfo got error code: %d\n", err_ret);
        return -1;
    }

    int sfd = -1;
    for (struct addrinfo* i = res; i != NULL; i = i->ai_next) {
        sfd = socket(i->ai_family, i->ai_socktype, i->ai_protocol);
        if (sfd == -1) {
            perror("socket");
            continue;
        }

        int connect_err = connect(sfd, i->ai_addr, i->ai_addrlen);
        if (connect_err == -1) {
            perror("connect client tcp");
            continue;
        }
        break;
    }

    freeaddrinfo(res);
    if (sfd == -1) {
        fprintf(stderr, "couldn't create client socket\n");
        return -1;
    }
    return sfd;
}

int main(void) {
    int sfd_client = client_tcp();

    char* my_string = "message from tcp client";
    write(sfd_client, my_string, strlen(my_string) + 1);

    char buf[1000];
    read(sfd_client, buf, 1000);

    printf("Client recieved from server: `%s`\n", buf);
    close(sfd_client);
}