bool NwConnection::addFilter(NwMessageFilterPtr filter)
{
if (!filter || !mBackend.frontend)
{
return false;
}
bufferevent* frontend = bufferevent_filter_new(
mBackend.frontend, filter_input_cb, filter_output_cb,
BEV_OPT_CLOSE_ON_FREE | BEV_OPT_THREADSAFE | BEV_OPT_UNLOCK_CALLBACKS | BEV_OPT_DEFER_CALLBACKS,
0, filter.data());
if (!frontend)
{
return false;
}
bufferevent_setcb(frontend, read_cb, 0, event_cb, this);
bufferevent_enable(frontend, EV_READ | EV_WRITE);
mBackend.frontend = frontend;
mFilters.push_back(filter);
return true;
}
static void
test_bufferevent_filters_impl(int use_pair)
{
struct bufferevent *bev1 = NULL, *bev2 = NULL;
char buffer[8333];
int i;
test_ok = 0;
if (use_pair) {
struct bufferevent *pair[2];
tt_assert(0 == bufferevent_pair_new(NULL, 0, pair));
bev1 = pair[0];
bev2 = pair[1];
} else {
bev1 = bufferevent_socket_new(NULL, pair[0], 0);
bev2 = bufferevent_socket_new(NULL, pair[1], 0);
}
for (i = 0; i < sizeof(buffer); i++)
buffer[i] = i;
bev1 = bufferevent_filter_new(bev1, NULL, bufferevent_output_filter,
0, NULL, NULL);
bev2 = bufferevent_filter_new(bev2, bufferevent_input_filter,
NULL, 0, NULL, NULL);
bufferevent_setcb(bev1, NULL, writecb, errorcb, NULL);
bufferevent_setcb(bev2, readcb, NULL, errorcb, NULL);
bufferevent_disable(bev1, EV_READ);
bufferevent_enable(bev2, EV_READ);
/* insert some filters */
bufferevent_write(bev1, buffer, sizeof(buffer));
event_dispatch();
if (test_ok != 2)
test_ok = 0;
end:
bufferevent_free(bev1);
bufferevent_free(bev2);
}
void
test_bufferevent_zlib(void *arg)
{
struct bufferevent *bev1=NULL, *bev2=NULL;
char buffer[8333];
z_stream z_input, z_output;
int i, pair[2]={-1,-1}, r;
(void)arg;
infilter_calls = outfilter_calls = readcb_finished = writecb_finished
= errorcb_invoked = 0;
if (evutil_socketpair(AF_UNIX, SOCK_STREAM, 0, pair) == -1) {
tt_abort_perror("socketpair");
}
evutil_make_socket_nonblocking(pair[0]);
evutil_make_socket_nonblocking(pair[1]);
bev1 = bufferevent_socket_new(NULL, pair[0], 0);
bev2 = bufferevent_socket_new(NULL, pair[1], 0);
memset(&z_output, 0, sizeof(z_output));
r = deflateInit(&z_output, Z_DEFAULT_COMPRESSION);
tt_int_op(r, ==, Z_OK);
memset(&z_input, 0, sizeof(z_input));
r = inflateInit(&z_input);
tt_int_op(r, ==, Z_OK);
/* initialize filters */
bev1 = bufferevent_filter_new(bev1, NULL, zlib_output_filter,
BEV_OPT_CLOSE_ON_FREE, zlib_deflate_free, &z_output);
bev2 = bufferevent_filter_new(bev2, zlib_input_filter,
NULL, BEV_OPT_CLOSE_ON_FREE, zlib_inflate_free, &z_input);
bufferevent_setcb(bev1, readcb, writecb, errorcb, NULL);
bufferevent_setcb(bev2, readcb, writecb, errorcb, NULL);
bufferevent_disable(bev1, EV_READ);
bufferevent_enable(bev1, EV_WRITE);
bufferevent_enable(bev2, EV_READ);
for (i = 0; i < (int)sizeof(buffer); i++)
buffer[i] = i;
/* break it up into multiple buffer chains */
bufferevent_write(bev1, buffer, 1800);
bufferevent_write(bev1, buffer + 1800, sizeof(buffer) - 1800);
/* we are done writing - we need to flush everything */
bufferevent_flush(bev1, EV_WRITE, BEV_FINISHED);
event_dispatch();
tt_want(infilter_calls);
tt_want(outfilter_calls);
tt_want(readcb_finished);
tt_want(writecb_finished);
tt_want(!errorcb_invoked);
test_ok = 1;
end:
if (bev1)
bufferevent_free(bev1);
if (bev2)
bufferevent_free(bev2);
if (pair[0] >= 0)
evutil_closesocket(pair[0]);
if (pair[1] >= 0)
evutil_closesocket(pair[1]);
}
