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/* Copyright libuv project and other Node 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_HANDLE(handle) \
ASSERT_NE((uv_udp_t*)(handle) == &server || (uv_udp_t*)(handle) == &client, 0)
static uv_udp_t server;
static uv_udp_t client;
static int cl_send_cb_called;
static int cl_recv_cb_called;
static int sv_send_cb_called;
static int sv_recv_cb_called;
static int close_cb_called;
static void sv_alloc_cb(uv_handle_t* handle,
size_t suggested_size,
uv_buf_t* buf) {
static char slab[65536];
CHECK_HANDLE(handle);
buf->base = slab;
buf->len = sizeof(slab);
}
static void cl_alloc_cb(uv_handle_t* handle,
size_t suggested_size,
uv_buf_t* buf) {
/* Do nothing, recv_cb should be called with UV_ENOBUFS. */
}
static void close_cb(uv_handle_t* handle) {
CHECK_HANDLE(handle);
ASSERT_EQ(1, uv_is_closing(handle));
close_cb_called++;
}
static void cl_recv_cb(uv_udp_t* handle,
ssize_t nread,
const uv_buf_t* buf,
const struct sockaddr* addr,
unsigned flags) {
CHECK_HANDLE(handle);
ASSERT_OK(flags);
ASSERT_EQ(nread, UV_ENOBUFS);
cl_recv_cb_called++;
uv_close((uv_handle_t*) handle, close_cb);
}
static void cl_send_cb(uv_udp_send_t* req, int status) {
int r;
ASSERT_NOT_NULL(req);
ASSERT_OK(status);
CHECK_HANDLE(req->handle);
r = uv_udp_recv_start(req->handle, cl_alloc_cb, cl_recv_cb);
ASSERT_OK(r);
cl_send_cb_called++;
}
static void sv_send_cb(uv_udp_send_t* req, int status) {
ASSERT_NOT_NULL(req);
ASSERT_OK(status);
CHECK_HANDLE(req->handle);
uv_close((uv_handle_t*) req->handle, close_cb);
free(req);
sv_send_cb_called++;
}
static void sv_recv_cb(uv_udp_t* handle,
ssize_t nread,
const uv_buf_t* rcvbuf,
const struct sockaddr* addr,
unsigned flags) {
uv_udp_send_t* req;
uv_buf_t sndbuf;
int r;
if (nread < 0) {
ASSERT(0 && "unexpected error");
}
if (nread == 0) {
/* Returning unused buffer. Don't count towards sv_recv_cb_called */
ASSERT_NULL(addr);
return;
}
CHECK_HANDLE(handle);
ASSERT_OK(flags);
ASSERT_NOT_NULL(addr);
ASSERT_EQ(4, nread);
ASSERT(!memcmp("PING", rcvbuf->base, nread));
r = uv_udp_recv_stop(handle);
ASSERT_OK(r);
req = malloc(sizeof *req);
ASSERT_NOT_NULL(req);
sndbuf = uv_buf_init("PONG", 4);
r = uv_udp_send(req, handle, &sndbuf, 1, addr, sv_send_cb);
ASSERT_OK(r);
sv_recv_cb_called++;
}
TEST_IMPL(udp_alloc_cb_fail) {
struct sockaddr_in addr;
uv_udp_send_t req;
uv_buf_t buf;
int r;
ASSERT_OK(uv_ip4_addr("0.0.0.0", TEST_PORT, &addr));
r = uv_udp_init(uv_default_loop(), &server);
ASSERT_OK(r);
r = uv_udp_bind(&server, (const struct sockaddr*) &addr, 0);
ASSERT_OK(r);
r = uv_udp_recv_start(&server, sv_alloc_cb, sv_recv_cb);
ASSERT_OK(r);
ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
r = uv_udp_init(uv_default_loop(), &client);
ASSERT_OK(r);
buf = uv_buf_init("PING", 4);
r = uv_udp_send(&req,
&client,
&buf,
1,
(const struct sockaddr*) &addr,
cl_send_cb);
ASSERT_OK(r);
ASSERT_OK(close_cb_called);
ASSERT_OK(cl_send_cb_called);
ASSERT_OK(cl_recv_cb_called);
ASSERT_OK(sv_send_cb_called);
ASSERT_OK(sv_recv_cb_called);
uv_run(uv_default_loop(), UV_RUN_DEFAULT);
ASSERT_EQ(1, cl_send_cb_called);
ASSERT_EQ(1, cl_recv_cb_called);
ASSERT_EQ(1, sv_send_cb_called);
ASSERT_EQ(1, sv_recv_cb_called);
ASSERT_EQ(2, close_cb_called);
MAKE_VALGRIND_HAPPY(uv_default_loop());
return 0;
}
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