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#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <assert.h>
#include "socket.h"
static int socket_nonblock(psocket *psocket)
{
int flags;
flags = fcntl(psocket->fd, F_GETFL, 0);
if (flags < 0)
return 1;
flags |= O_NONBLOCK;
if (fcntl(psocket->fd, F_SETFL, flags) == -1)
return 1;
return 0;
}
int socket_init_in(psocket *psocket, const char *listen_addr,
const char *listen_port, struct addrinfo **results)
{
struct addrinfo hints = {0};
assert(psocket);
assert(listen_addr || listen_port); /* getaddrinfo wants either node or service */
hints.ai_family = AF_UNSPEC; /* IPV4 && IPV6 */
hints.ai_socktype = SOCK_STREAM; /* TCP */
hints.ai_flags = AI_PASSIVE; /* all interfaces */
return getaddrinfo(listen_addr, listen_port, &hints, results);
}
int socket_bind_in(psocket *psocket, struct addrinfo *results)
{
int fd = -1, rv;
struct addrinfo *rp = NULL;
assert(psocket && results);
for (rp = results; rp != NULL; rp = rp->ai_next) {
fd = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
if (fd < 0)
continue;
rv = bind(fd, rp->ai_addr, rp->ai_addrlen);
if (!rv)
break;
close(fd);
}
if (!rp)
return -1;
psocket->fd = fd;
psocket->addr = *rp;
freeaddrinfo(results);
return socket_nonblock(psocket);
}
int socket_listen_in(psocket *psocket)
{
assert(psocket);
return listen(psocket->fd, POTD_BACKLOG);
}
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