/* 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 #include #include #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_NULL(send_req.handle); 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_NOT_NULL(req); 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(uv_default_loop()); return 0; }