#pragma once
#include <sys/socket.h>
#include <fcntl.h>
#include <unistd.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int create_tcp_client(char* host, char* service);
int create_tcp_server(char* service);
int make_socket_non_blocking(int fd);
int read_entity(int fd, void* entity, int size);
void fill_buffer(size_t* written, char* dest, void *src, size_t n);