LWS_VISIBLE int
lws_plat_service(struct libwebsocket_context *context, int timeout_ms)
{
int n;
int m;
char buf;
/* stay dead once we are dead */
if (!context)
return 1;
lws_libev_run(context);
context->service_tid = context->protocols[0].callback(context, NULL,
LWS_CALLBACK_GET_THREAD_ID, NULL, NULL, 0);
n = poll(context->fds, context->fds_count, timeout_ms);
context->service_tid = 0;
if (n == 0) /* poll timeout */ {
libwebsocket_service_fd(context, NULL);
return 0;
}
if (n < 0) {
if (LWS_ERRNO != LWS_EINTR)
return -1;
return 0;
}
/* any socket with events to service? */
for (n = 0; n < context->fds_count; n++) {
if (!context->fds[n].revents)
continue;
if (context->fds[n].fd == context->dummy_pipe_fds[0]) {
if (read(context->fds[n].fd, &buf, 1) != 1)
lwsl_err("Cannot read from dummy pipe.");
continue;
}
m = libwebsocket_service_fd(context, &context->fds[n]);
if (m < 0)
return -1;
/* if something closed, retry this slot */
if (m)
n--;
}
return 0;
}
LWS_VISIBLE LWS_EXTERN int
_lws_plat_service_tsi(struct lws_context *context, int timeout_ms, int tsi)
{
struct lws_context_per_thread *pt = &context->pt[tsi];
int n = -1, m, c;
char buf;
/* stay dead once we are dead */
if (!context || !context->vhost_list)
return 1;
if (timeout_ms < 0)
goto faked_service;
lws_libev_run(context, tsi);
lws_libuv_run(context, tsi);
if (!context->service_tid_detected) {
struct lws _lws;
memset(&_lws, 0, sizeof(_lws));
_lws.context = context;
context->service_tid_detected =
context->vhost_list->protocols[0].callback(
&_lws, LWS_CALLBACK_GET_THREAD_ID, NULL, NULL, 0);
}
context->service_tid = context->service_tid_detected;
/*
* is there anybody with pending stuff that needs service forcing?
*/
if (!lws_service_adjust_timeout(context, 1, tsi)) {
/* -1 timeout means just do forced service */
_lws_plat_service_tsi(context, -1, pt->tid);
/* still somebody left who wants forced service? */
if (!lws_service_adjust_timeout(context, 1, pt->tid))
/* yes... come back again quickly */
timeout_ms = 0;
}
n = poll(pt->fds, pt->fds_count, timeout_ms);
#ifdef LWS_OPENSSL_SUPPORT
if (!pt->rx_draining_ext_list &&
!lws_ssl_anybody_has_buffered_read_tsi(context, tsi) && !n) {
#else
if (!pt->rx_draining_ext_list && !n) /* poll timeout */ {
#endif
lws_service_fd_tsi(context, NULL, tsi);
return 0;
}
faked_service:
m = lws_service_flag_pending(context, tsi);
if (m)
c = -1; /* unknown limit */
else
if (n < 0) {
if (LWS_ERRNO != LWS_EINTR)
return -1;
return 0;
} else
c = n;
/* any socket with events to service? */
for (n = 0; n < pt->fds_count && c; n++) {
if (!pt->fds[n].revents)
continue;
c--;
if (pt->fds[n].fd == pt->dummy_pipe_fds[0]) {
if (read(pt->fds[n].fd, &buf, 1) != 1)
lwsl_err("Cannot read from dummy pipe.");
continue;
}
m = lws_service_fd_tsi(context, &pt->fds[n], tsi);
if (m < 0)
return -1;
/* if something closed, retry this slot */
if (m)
n--;
}
return 0;
}
LWS_VISIBLE int
lws_plat_check_connection_error(struct lws *wsi)
{
return 0;
}
LWS_VISIBLE int
lws_plat_service(struct lws_context *context, int timeout_ms)
{
return _lws_plat_service_tsi(context, timeout_ms, 0);
}
LWS_VISIBLE int
lws_plat_set_socket_options(struct lws_vhost *vhost, int fd)
{
int optval = 1;
socklen_t optlen = sizeof(optval);
#if defined(__APPLE__) || \
defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
defined(__NetBSD__) || \
defined(__OpenBSD__)
struct protoent *tcp_proto;
#endif
if (vhost->ka_time) {
/* enable keepalive on this socket */
optval = 1;
if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE,
(const void *)&optval, optlen) < 0)
return 1;
#if defined(__APPLE__) || \
defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
defined(__NetBSD__) || \
defined(__CYGWIN__) || defined(__OpenBSD__) || defined (__sun)
/*
* didn't find a way to set these per-socket, need to
* tune kernel systemwide values
*/
#else
/* set the keepalive conditions we want on it too */
optval = vhost->ka_time;
if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPIDLE,
(const void *)&optval, optlen) < 0)
return 1;
optval = vhost->ka_interval;
if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPINTVL,
(const void *)&optval, optlen) < 0)
return 1;
optval = vhost->ka_probes;
if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPCNT,
(const void *)&optval, optlen) < 0)
return 1;
#endif
}
/* Disable Nagle */
optval = 1;
#if defined (__sun)
if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (const void *)&optval, optlen) < 0)
return 1;
#elif !defined(__APPLE__) && \
!defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) && \
!defined(__NetBSD__) && \
!defined(__OpenBSD__)
if (setsockopt(fd, SOL_TCP, TCP_NODELAY, (const void *)&optval, optlen) < 0)
return 1;
#else
tcp_proto = getprotobyname("TCP");
if (setsockopt(fd, tcp_proto->p_proto, TCP_NODELAY, &optval, optlen) < 0)
return 1;
#endif
/* We are nonblocking... */
if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0)
return 1;
return 0;
}
LWS_VISIBLE int
lws_plat_service(struct lws_context *context, int timeout_ms)
{
int n;
int m;
char buf;
#ifdef LWS_OPENSSL_SUPPORT
struct lws *wsi, *wsi_next;
#endif
/* stay dead once we are dead */
if (!context)
return 1;
lws_libev_run(context);
context->service_tid = context->protocols[0].callback(NULL,
LWS_CALLBACK_GET_THREAD_ID, NULL, NULL, 0);
#ifdef LWS_OPENSSL_SUPPORT
/* if we know we have non-network pending data, do not wait in poll */
if (lws_ssl_anybody_has_buffered_read(context))
timeout_ms = 0;
#endif
n = poll(context->fds, context->fds_count, timeout_ms);
context->service_tid = 0;
#ifdef LWS_OPENSSL_SUPPORT
if (!lws_ssl_anybody_has_buffered_read(context) && n == 0) {
#else
if (n == 0) /* poll timeout */ {
#endif
lws_service_fd(context, NULL);
return 0;
}
if (n < 0) {
if (LWS_ERRNO != LWS_EINTR)
return -1;
return 0;
}
#ifdef LWS_OPENSSL_SUPPORT
/*
* For all guys with buffered SSL read data already saved up, if they
* are not flowcontrolled, fake their POLLIN status so they'll get
* service to use up the buffered incoming data, even though their
* network socket may have nothing
*/
wsi = context->pending_read_list;
while (wsi) {
wsi_next = wsi->pending_read_list_next;
context->fds[wsi->position_in_fds_table].revents |=
context->fds[wsi->position_in_fds_table].events & POLLIN;
if (context->fds[wsi->position_in_fds_table].revents & POLLIN)
/*
* he's going to get serviced now, take him off the
* list of guys with buffered SSL. If he still has some
* at the end of the service, he'll get put back on the
* list then.
*/
lws_ssl_remove_wsi_from_buffered_list(wsi);
wsi = wsi_next;
}
#endif
/* any socket with events to service? */
for (n = 0; n < context->fds_count; n++) {
if (!context->fds[n].revents)
continue;
if (context->fds[n].fd == context->dummy_pipe_fds[0]) {
if (read(context->fds[n].fd, &buf, 1) != 1)
lwsl_err("Cannot read from dummy pipe.");
continue;
}
m = lws_service_fd(context, &context->fds[n]);
if (m < 0)
return -1;
/* if something closed, retry this slot */
if (m)
n--;
}
return 0;
}
LWS_VISIBLE int
lws_plat_set_socket_options(struct lws_context *context, int fd)
{
int optval = 1;
socklen_t optlen = sizeof(optval);
#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__) || \
defined(__OpenBSD__)
struct protoent *tcp_proto;
#endif
if (context->ka_time) {
/* enable keepalive on this socket */
optval = 1;
if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE,
(const void *)&optval, optlen) < 0)
return 1;
#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__) || \
defined(__CYGWIN__) || defined(__OpenBSD__)
/*
* didn't find a way to set these per-socket, need to
* tune kernel systemwide values
*/
#else
/* set the keepalive conditions we want on it too */
optval = context->ka_time;
if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPIDLE,
(const void *)&optval, optlen) < 0)
return 1;
optval = context->ka_interval;
if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPINTVL,
(const void *)&optval, optlen) < 0)
return 1;
optval = context->ka_probes;
if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPCNT,
(const void *)&optval, optlen) < 0)
return 1;
#endif
}
/* Disable Nagle */
optval = 1;
#if !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__NetBSD__) && \
!defined(__OpenBSD__)
if (setsockopt(fd, SOL_TCP, TCP_NODELAY, (const void *)&optval, optlen) < 0)
return 1;
#else
tcp_proto = getprotobyname("TCP");
if (setsockopt(fd, tcp_proto->p_proto, TCP_NODELAY, &optval, optlen) < 0)
return 1;
#endif
/* We are nonblocking... */
if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0)
return 1;
return 0;
}
