struct evconnlistener *
evconnlistener_new_bind(struct event_base *base, evconnlistener_cb cb,
void *ptr, unsigned flags, int backlog, const struct sockaddr *sa,
int socklen)
{
struct evconnlistener *listener;
evutil_socket_t fd;
int on = 1;
int family = sa ? sa->sa_family : AF_UNSPEC;
int socktype = SOCK_STREAM | EVUTIL_SOCK_NONBLOCK;
if (backlog == 0)
return NULL;
if (flags & LEV_OPT_CLOSE_ON_EXEC)
socktype |= EVUTIL_SOCK_CLOEXEC;
fd = evutil_socket_(family, socktype, 0);
if (fd == -1)
return NULL;
if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (void*)&on, sizeof(on))<0)
goto err;
if (flags & LEV_OPT_REUSEABLE) {
if (evutil_make_listen_socket_reuseable(fd) < 0)
goto err;
}
if (flags & LEV_OPT_REUSEABLE_PORT) {
if (evutil_make_listen_socket_reuseable_port(fd) < 0)
goto err;
}
if (flags & LEV_OPT_DEFERRED_ACCEPT) {
if (evutil_make_tcp_listen_socket_deferred(fd) < 0)
goto err;
}
if (sa) {
if (bind(fd, sa, socklen)<0)
goto err;
}
listener = evconnlistener_new(base, cb, ptr, flags, backlog, fd);
if (!listener)
goto err;
return listener;
err:
evutil_closesocket(fd);
return NULL;
}
int
bufferevent_socket_connect(struct bufferevent *bev,
struct sockaddr *sa, int socklen)
{
struct bufferevent_private *bufev_p =
EVUTIL_UPCAST(bev, struct bufferevent_private, bev);
evutil_socket_t fd;
int r = 0;
int result=-1;
int ownfd = 0;
bufferevent_incref_and_lock_(bev);
if (!bufev_p)
goto done;
fd = bufferevent_getfd(bev);
if (fd < 0) {
if (!sa)
goto done;
fd = evutil_socket_(sa->sa_family,
SOCK_STREAM|EVUTIL_SOCK_NONBLOCK, 0);
if (fd < 0)
goto done;
ownfd = 1;
}
if (sa) {
#ifdef _WIN32
if (bufferevent_async_can_connect_(bev)) {
bufferevent_setfd(bev, fd);
r = bufferevent_async_connect_(bev, fd, sa, socklen);
if (r < 0)
goto freesock;
bufev_p->connecting = 1;
result = 0;
goto done;
} else
#endif
r = evutil_socket_connect_(&fd, sa, socklen);
if (r < 0)
goto freesock;
}
#ifdef _WIN32
/* ConnectEx() isn't always around, even when IOCP is enabled.
* Here, we borrow the socket object's write handler to fall back
* on a non-blocking connect() when ConnectEx() is unavailable. */
if (BEV_IS_ASYNC(bev)) {
event_assign(&bev->ev_write, bev->ev_base, fd,
EV_WRITE|EV_PERSIST, bufferevent_writecb, bev);
}
#endif
bufferevent_setfd(bev, fd);
if (r == 0) {
if (! be_socket_enable(bev, EV_WRITE)) {
bufev_p->connecting = 1;
result = 0;
goto done;
}
} else if (r == 1) {
/* The connect succeeded already. How very BSD of it. */
result = 0;
bufev_p->connecting = 1;
event_active(&bev->ev_write, EV_WRITE, 1);
} else {
/* The connect failed already. How very BSD of it. */
bufev_p->connection_refused = 1;
bufev_p->connecting = 1;
result = 0;
event_active(&bev->ev_write, EV_WRITE, 1);
}
goto done;
freesock:
bufferevent_run_eventcb_(bev, BEV_EVENT_ERROR);
if (ownfd)
evutil_closesocket(fd);
/* do something about the error? */
done:
bufferevent_decref_and_unlock_(bev);
return result;
}