84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
/* ************************************************************************** */
|
|
/* */
|
|
/* ::: :::::::: */
|
|
/* create_client.c :+: :+: :+: */
|
|
/* +:+ +:+ +:+ */
|
|
/* By: jhalford <jack@crans.org> +#+ +:+ +#+ */
|
|
/* +#+#+#+#+#+ +#+ */
|
|
/* Created: 2017/10/07 17:59:28 by jhalford #+# #+# */
|
|
/* Updated: 2017/11/12 17:57:47 by jhalford ### ########.fr */
|
|
/* */
|
|
/* ************************************************************************** */
|
|
|
|
#include "libft.h"
|
|
|
|
struct addrinfo *resolve_host(char *hostname, char *port)
|
|
{
|
|
struct addrinfo *result;
|
|
struct addrinfo hints;
|
|
int ecode;
|
|
|
|
memset(&hints, 0, sizeof(hints));
|
|
hints.ai_flags = AI_CANONNAME;
|
|
hints.ai_family = PF_UNSPEC;
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
hints.ai_protocol = IPPROTO_TCP;
|
|
if ((ecode = getaddrinfo(hostname, port, &hints, &result)) != 0)
|
|
{
|
|
ft_dprintf(2, "getaddrinfo: %s\n", gai_strerror(ecode));
|
|
exit(1);
|
|
}
|
|
return (result);
|
|
}
|
|
|
|
int create_tcpclient(char *host, char *port)
|
|
{
|
|
struct addrinfo *ai;
|
|
int sock;
|
|
struct addrinfo *first;
|
|
|
|
first = resolve_host(host, port);
|
|
ai = first;
|
|
while (ai)
|
|
{
|
|
if ((sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol))
|
|
< 0)
|
|
return (-1);
|
|
if (connect(sock, ai->ai_addr, ai->ai_addrlen) == 0)
|
|
break ;
|
|
close(sock);
|
|
sock = -1;
|
|
ai = ai->ai_next;
|
|
}
|
|
freeaddrinfo(first);
|
|
return (sock);
|
|
}
|
|
|
|
void listener(int domain, int sock, int proto,
|
|
void (*handler)(void *buf, int bytes, struct sockaddr_in *addr))
|
|
{
|
|
int sd;
|
|
struct sockaddr_in addr;
|
|
unsigned char buf[1024];
|
|
int bytes;
|
|
socklen_t len;
|
|
|
|
len = sizeof(addr);
|
|
sd = socket(domain, sock, proto);
|
|
if (sd < 0)
|
|
{
|
|
perror("listener socket");
|
|
exit(0);
|
|
}
|
|
while (1)
|
|
{
|
|
bzero(buf, sizeof(buf));
|
|
bytes = recvfrom(sd, buf, sizeof(buf), 0,
|
|
(struct sockaddr*)&addr, &len);
|
|
if (bytes > 0 && handler)
|
|
handler(buf, bytes, &addr);
|
|
else
|
|
perror("recvfrom");
|
|
}
|
|
exit(0);
|
|
}
|