cosmopolitan/libc/sock/socketconnect.c

43 lines
2.4 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ This program is free software; you can redistribute it and/or modify │
│ it under the terms of the GNU General Public License as published by │
│ the Free Software Foundation; version 2 of the License. │
│ │
│ This program is distributed in the hope that it will be useful, but │
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
│ General Public License for more details. │
│ │
│ You should have received a copy of the GNU General Public License │
│ along with this program; if not, write to the Free Software │
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/dns/dns.h"
#include "libc/errno.h"
#include "libc/sock/sock.h"
/**
* Opens socket client connection.
*
* @param ai can be obtained via getaddrinfo()
* @return socket file descriptor, or -1 w/ errno
*/
int socketconnect(const struct addrinfo *ai, int flags) {
int fd;
fd = socket(ai->ai_family, ai->ai_socktype | flags, ai->ai_protocol);
if (fd != -1) {
if (connect(fd, ai->ai_addr, ai->ai_addrlen) != -1 ||
errno == EINPROGRESS) {
return fd;
}
close(fd);
}
return -1;
}