/* Copyright The libuv project and contributors. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "uv.h"
#include "task.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define CHECK_OBJECT(handle, type, parent) \
ASSERT((type*)(handle) == &(parent))
static uv_udp_t client;
static uv_idle_t idle_handle;
static uv_udp_send_t send_req;
static uv_buf_t buf;
static struct sockaddr_in addr;
static char send_data[1024];
static int loop_hang_called;
static void send_cb(uv_udp_send_t* req, int status);
static void idle_cb(uv_idle_t* handle) {
int r;
ASSERT(send_req.handle == NULL);
CHECK_OBJECT(handle, uv_idle_t, idle_handle);
ASSERT(0 == uv_idle_stop(handle));
/* It probably would have stalled by now if it's going to stall at all. */
if (++loop_hang_called > 1000) {
uv_close((uv_handle_t*) &client, NULL);
uv_close((uv_handle_t*) &idle_handle, NULL);
return;
}
r = uv_udp_send(&send_req,
&client,
&buf,
1,
(const struct sockaddr*) &addr,
send_cb);
ASSERT(r == 0);
}
static void send_cb(uv_udp_send_t* req, int status) {
ASSERT(req != NULL);
ASSERT(status == 0 || status == UV_ENETUNREACH);
CHECK_OBJECT(req->handle, uv_udp_t, client);
CHECK_OBJECT(req, uv_udp_send_t, send_req);
req->handle = NULL;
ASSERT(0 == uv_idle_start(&idle_handle, idle_cb));
}
TEST_IMPL(udp_send_hang_loop) {
ASSERT(0 == uv_idle_init(uv_default_loop(), &idle_handle));
/* 192.0.2.0/8 is "TEST-NET" and reserved for documentation.
* Good for us, though. Since we want to have something unreachable.
*/
ASSERT(0 == uv_ip4_addr("192.0.2.3", TEST_PORT, &addr));
ASSERT(0 == uv_udp_init(uv_default_loop(), &client));
buf = uv_buf_init(send_data, sizeof(send_data));
ASSERT(0 == uv_idle_start(&idle_handle, idle_cb));
uv_run(uv_default_loop(), UV_RUN_DEFAULT);
ASSERT(loop_hang_called > 1000);
MAKE_VALGRIND_HAPPY();
return 0;
}