/* 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 <errno.h>

#include <string.h> /* memset */

#define NUM_WRITE_REQS 32

static uv_tcp_t tcp_handle;

static uv_connect_t connect_req;

static int write_cb_called;

static int close_cb_called;

static void connect_cb(uv_connect_t* req, int status);

static void write_cb(uv_write_t* req, int status);

static void close_cb(uv_handle_t* handle);

static void connect_cb(uv_connect_t* conn_req, int status) {

  uv_write_t* req;

  uv_buf_t buf;

  int i, r;

  buf = uv_buf_init("PING", 4);

  for (i = 0; i < NUM_WRITE_REQS; i++) {

    req = malloc(sizeof *req);

    ASSERT(req != NULL);

    r = uv_write(req, (uv_stream_t*)&tcp_handle, &buf, 1, write_cb);

    ASSERT(r == 0);

  }

  uv_close((uv_handle_t*)&tcp_handle, close_cb);

}

static void write_cb(uv_write_t* req, int status) {

  /* write callbacks should run before the close callback */

  ASSERT(close_cb_called == 0);

  ASSERT(req->handle == (uv_stream_t*)&tcp_handle);

  write_cb_called++;

  free(req);

}

static void close_cb(uv_handle_t* handle) {

  ASSERT(handle == (uv_handle_t*)&tcp_handle);

  close_cb_called++;

}

static void connection_cb(uv_stream_t* server, int status) {

  ASSERT(status == 0);

}

static void start_server(uv_loop_t* loop, uv_tcp_t* handle) {

  struct sockaddr_in addr;

  int r;

  ASSERT(0 == uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));

  r = uv_tcp_init(loop, handle);

  ASSERT(r == 0);

  r = uv_tcp_bind(handle, (const struct sockaddr*) &addr, 0);

  ASSERT(r == 0);

  r = uv_listen((uv_stream_t*)handle, 128, connection_cb);

  ASSERT(r == 0);

  uv_unref((uv_handle_t*)handle);

}

/* Check that pending write requests have their callbacks

 * invoked when the handle is closed.

 */

TEST_IMPL(tcp_close) {

  struct sockaddr_in addr;

  uv_tcp_t tcp_server;

  uv_loop_t* loop;

  int r;

  ASSERT(0 == uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));

  loop = uv_default_loop();

  /* We can't use the echo server, it doesn't handle ECONNRESET. */

  start_server(loop, &tcp_server);

  r = uv_tcp_init(loop, &tcp_handle);

  ASSERT(r == 0);

  r = uv_tcp_connect(&connect_req,

                     &tcp_handle,

                     (const struct sockaddr*) &addr,

                     connect_cb);

  ASSERT(r == 0);

  ASSERT(write_cb_called == 0);

  ASSERT(close_cb_called == 0);

  r = uv_run(loop, UV_RUN_DEFAULT);

  ASSERT(r == 0);

  printf("%d of %d write reqs seen\n", write_cb_called, NUM_WRITE_REQS);

  ASSERT(write_cb_called == NUM_WRITE_REQS);

  ASSERT(close_cb_called == 1);

  MAKE_VALGRIND_HAPPY();

  return 0;

}