int
socket_tcp6b(void) {
#ifdef LIBC_HAS_IP6
int s;
#if WINDOWS_NATIVE
__winsock_init();
#endif
if(noipv6)
goto compat;
s = winsock2errno(socket(PF_INET6, SOCK_STREAM, 0));
if(s == -1) {
if(errno == EINVAL || errno == EAFNOSUPPORT || errno == EPFNOSUPPORT || errno == EPROTONOSUPPORT) {
compat:
s = winsock2errno(socket(AF_INET, SOCK_STREAM, 0));
noipv6 = 1;
if(s == -1)
return -1;
} else
return -1;
}
#ifdef IPV6_V6ONLY
{
int zero = 0;
winsock2errno(setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, (void*)&zero, sizeof(zero)));
}
#endif
return s;
#else
return socket_tcp4b();
#endif
}
int socket_udp4(void) {
int s;
__winsock_init();
s = winsock2errno(socket(PF_INET,SOCK_DGRAM,IPPROTO_UDP));
if (s == -1) return -1;
if (ndelay_on(s) == -1) { close(s); return -1; }
return s;
}
int io_socketpair(int64* d) {
int fds[2];
__winsock_init();
if (socketpair(AF_UNIX,SOCK_STREAM,0,fds)==-1)
if (socketpair(AF_INET6,SOCK_STREAM,IPPROTO_TCP,fds)==-1)
if (socketpair(AF_INET,SOCK_STREAM,IPPROTO_TCP,fds)==-1)
return 0;
if (io_fd(fds[1]) && io_fd(fds[0])) {
d[0]=fds[0];
d[1]=fds[1];
return 1;
}
io_close(fds[1]);
io_close(fds[0]);
return 0;
}
PRIVATE socket_t *socket_udp6(uint32_t scope_id)
{
socket_t *s = socket_new6(scope_id);
if (s == NULL) {
return NULL;
}
#if defined(HAVE_LIBC_IPV6)
__winsock_init();
if (ip6disabled) {
goto compat;
}
s->fd = __winsock_errno(socket(PF_INET6, SOCK_DGRAM, IPPROTO_UDP));
if (s->fd == -1) {
if (errno == EINVAL ||
errno == EAFNOSUPPORT ||
errno == EPFNOSUPPORT ||
errno == EPROTONOSUPPORT) {
compat:
s->fd = __winsock_errno(socket(AF_INET, SOCK_DGRAM, 0));
ip6disabled = true;
if (s->fd == -1) {
socket_free(s);
return NULL;
}
}
if (s->fd == -1) {
socket_free(s);
return NULL;
}
return s;
}
#if defined(IPV6_V6ONLY)
int zero = 0;
__winsock_errno(setsockopt(s->fd, IPPROTO_IPV6, IPV6_V6ONLY, (void *)&zero, sizeof(zero)));
#endif
if (socket_nodelay(s->fd) == -1) {
close(s->fd);
socket_free(s);
return NULL;
}
return s;
#else // HAVE_LIBC_IPV6
return s;
#endif
}
PRIVATE socket_t *socket_udp4(void)
{
socket_t *s = socket_new4();
if (s == NULL) {
errno = EINVAL;
return NULL;
}
__winsock_init();
s->fd = __winsock_errno(socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP));
if (s->fd == -1) {
socket_free(s);
return NULL;
}
if (socket_nodelay(s->fd) == -1) {
close(s->fd);
socket_free(s);
return NULL;
}
return s;
}
