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/* Copyright libuv 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) == &recver || (uv_udp_t*)(handle) == &sender, 0)
#define BUFFER_MULTIPLIER 20
#define MAX_DGRAM_SIZE (64 * 1024)
#define NUM_SENDS 40
static uv_udp_t recver;
static uv_udp_t sender;
static int recv_cb_called;
static int received_datagrams;
static int read_bytes;
static int close_cb_called;
static int alloc_cb_called;
static void alloc_cb(uv_handle_t* handle,
size_t suggested_size,
uv_buf_t* buf) {
size_t buffer_size;
CHECK_HANDLE(handle);
/* Only allocate enough room for multiple dgrams if we can actually recv them */
buffer_size = MAX_DGRAM_SIZE;
if (uv_udp_using_recvmmsg((uv_udp_t*)handle))
buffer_size *= BUFFER_MULTIPLIER;
/* Actually malloc to exercise free'ing the buffer later */
buf->base = malloc(buffer_size);
ASSERT_NOT_NULL(buf->base);
buf->len = buffer_size;
alloc_cb_called++;
}
static void close_cb(uv_handle_t* handle) {
CHECK_HANDLE(handle);
ASSERT(uv_is_closing(handle));
close_cb_called++;
}
static void recv_cb(uv_udp_t* handle,
ssize_t nread,
const uv_buf_t* rcvbuf,
const struct sockaddr* addr,
unsigned flags) {
ASSERT_GE(nread, 0);
read_bytes += nread;
/* free and return if this is a mmsg free-only callback invocation */
if (flags & UV_UDP_MMSG_FREE) {
ASSERT_OK(nread);
ASSERT_NULL(addr);
free(rcvbuf->base);
return;
}
if (nread == 0) {
/* There can be no more available data for the time being. */
ASSERT_NULL(addr);
} else {
ASSERT_EQ(4, nread);
ASSERT_NOT_NULL(addr);
ASSERT_MEM_EQ("PING", rcvbuf->base, nread);
received_datagrams++;
}
recv_cb_called++;
if (received_datagrams == NUM_SENDS) {
uv_close((uv_handle_t*) handle, close_cb);
uv_close((uv_handle_t*) &sender, close_cb);
}
/* Don't free if the buffer could be reused via mmsg */
if (rcvbuf && !(flags & UV_UDP_MMSG_CHUNK))
free(rcvbuf->base);
}
TEST_IMPL(udp_mmsg) {
struct sockaddr_in addr;
uv_buf_t buf;
int i;
ASSERT_OK(uv_ip4_addr("0.0.0.0", TEST_PORT, &addr));
ASSERT_OK(uv_udp_init_ex(uv_default_loop(), &recver,
AF_UNSPEC | UV_UDP_RECVMMSG));
ASSERT_OK(uv_udp_bind(&recver, (const struct sockaddr*) &addr, 0));
ASSERT_OK(uv_udp_recv_start(&recver, alloc_cb, recv_cb));
ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
ASSERT_OK(uv_udp_init(uv_default_loop(), &sender));
buf = uv_buf_init("PING", 4);
for (i = 0; i < NUM_SENDS; i++) {
ASSERT_EQ(4, uv_udp_try_send(&sender, &buf, 1, (const struct sockaddr*) &addr));
}
ASSERT_OK(uv_run(uv_default_loop(), UV_RUN_DEFAULT));
ASSERT_EQ(2, close_cb_called);
ASSERT_EQ(received_datagrams, NUM_SENDS);
ASSERT_OK(sender.send_queue_size);
ASSERT_OK(recver.send_queue_size);
printf("%d allocs for %d recvs\n", alloc_cb_called, recv_cb_called);
/* On platforms that don't support mmsg, each recv gets its own alloc */
if (uv_udp_using_recvmmsg(&recver))
ASSERT_EQ(read_bytes, NUM_SENDS * 4); /* we're sending 4 bytes per datagram */
else
ASSERT_EQ(alloc_cb_called, recv_cb_called);
MAKE_VALGRIND_HAPPY(uv_default_loop());
return 0;
}
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