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/* Copyright Joyent, Inc. 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>
static void connection_cb(uv_stream_t* server, int status);
static void connect_cb(uv_connect_t* req, int status);
static void write_cb(uv_write_t* req, int status);
static void read_cb(uv_stream_t* stream, ssize_t nread, uv_buf_t buf);
static uv_buf_t alloc_cb(uv_handle_t* handle, size_t suggested_size);
static uv_tcp_t tcp_server;
static uv_tcp_t tcp_client;
static uv_tcp_t tcp_peer; /* client socket as accept()-ed by server */
static uv_connect_t connect_req;
static int write_cb_called;
static int write_cb_error_called;
typedef struct {
uv_write_t req;
uv_buf_t buf;
} write_req_t;
static void connection_cb(uv_stream_t* server, int status) {
int r;
ASSERT(server == (uv_stream_t*)&tcp_server);
ASSERT(status == 0);
r = uv_tcp_init(server->loop, &tcp_peer);
ASSERT(r == 0);
r = uv_accept(server, (uv_stream_t*)&tcp_peer);
ASSERT(r == 0);
r = uv_read_start((uv_stream_t*)&tcp_peer, alloc_cb, read_cb);
ASSERT(r == 0);
}
static uv_buf_t alloc_cb(uv_handle_t* handle, size_t suggested_size) {
static char slab[1024];
return uv_buf_init(slab, sizeof slab);
}
static void read_cb(uv_stream_t* stream, ssize_t nread, uv_buf_t buf) {
uv_close((uv_handle_t*)&tcp_server, NULL);
uv_close((uv_handle_t*)&tcp_peer, NULL);
}
static void connect_cb(uv_connect_t* req, int status) {
uv_buf_t buf;
size_t size;
char* data;
int r;
write_req_t* wr;
ASSERT(req == &connect_req);
ASSERT(status == 0);
while (1) {
size = 10 * 1024 * 1024;
data = malloc(size);
ASSERT(data != NULL);
memset(data, '$', size);
buf = uv_buf_init(data, size);
wr = (write_req_t*) malloc(sizeof *wr);
wr->buf = buf;
wr->req.data = data;
r = uv_write(&(wr->req), req->handle, &wr->buf, 1, write_cb);
ASSERT(r == 0);
if (req->handle->write_queue_size >= size * 2) {
break;
}
}
}
static void write_cb(uv_write_t* req, int status) {
write_req_t* wr;
wr = (write_req_t*) req;
if (status == -1) {
write_cb_error_called++;
}
if (req->handle->write_queue_size == 0) {
uv_close((uv_handle_t*)&tcp_client, NULL);
}
free(wr->buf.base);
free(wr);
write_cb_called++;
}
/*
* Assert that a failing write does not leave
* the stream's write_queue_size in an inconsistent state.
*/
TEST_IMPL(tcp_write_error) {
uv_loop_t* loop;
int r;
loop = uv_default_loop();
ASSERT(loop != NULL);
r = uv_tcp_init(loop, &tcp_server);
ASSERT(r == 0);
r = uv_tcp_bind(&tcp_server, uv_ip4_addr("127.0.0.1", TEST_PORT));
ASSERT(r == 0);
r = uv_listen((uv_stream_t*)&tcp_server, 1, connection_cb);
ASSERT(r == 0);
r = uv_tcp_init(loop, &tcp_client);
ASSERT(r == 0);
r = uv_tcp_connect(&connect_req,
&tcp_client,
uv_ip4_addr("127.0.0.1", TEST_PORT),
connect_cb);
ASSERT(r == 0);
ASSERT(write_cb_called == 0);
r = uv_run(loop);
ASSERT(r == 0);
ASSERT(write_cb_called > 0);
ASSERT(write_cb_error_called >= 1);
ASSERT(tcp_client.write_queue_size == 0);
return 0;
}
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