/* Copyright libuv project 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"

static uv_tcp_t server;

static uv_tcp_t connection;

static int read_cb_called = 0;

static uv_tcp_t client;

static uv_connect_t connect_req;

static void on_read2(uv_stream_t* stream, ssize_t nread, const uv_buf_t* buf);

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

  ASSERT(0 == status);

  uv_close((uv_handle_t*)req->handle, NULL); /* Close immediately */

  free(req);

}

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

  ASSERT(0 == status);

  free(req);

}

static void do_write(uv_stream_t* stream, uv_write_cb cb) {

  uv_write_t* req = malloc(sizeof(*req));

  uv_buf_t buf;

  buf.base = "1234578";

  buf.len = 8;

  ASSERT(0 == uv_write(req, stream, &buf, 1, cb));

}

static void on_alloc(uv_handle_t* handle,

                     size_t suggested_size,

                     uv_buf_t* buf) {

  static char slab[65536];

  buf->base = slab;

  buf->len = sizeof(slab);

}

static void on_read1(uv_stream_t* stream, ssize_t nread, const uv_buf_t* buf) {

  ASSERT(nread >= 0);

  /* Do write on a half open connection to force WSAECONNABORTED (on Windows)

   * in the subsequent uv_read_start()

   */

  do_write(stream, on_write);

  ASSERT(0 == uv_read_stop(stream));

  ASSERT(0 == uv_read_start(stream, on_alloc, on_read2));

  read_cb_called++;

}

static void on_read2(uv_stream_t* stream, ssize_t nread, const uv_buf_t* buf) {

  ASSERT(nread < 0);

  uv_close((uv_handle_t*)stream, NULL);

  uv_close((uv_handle_t*)&server, NULL);

  read_cb_called++;

}

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

  ASSERT(0 == status);

  ASSERT(0 == uv_tcp_init(server->loop, &connection));

  ASSERT(0 == uv_accept(server, (uv_stream_t* )&connection));

  ASSERT(0 == uv_read_start((uv_stream_t*)&connection, on_alloc, on_read1));

}

static void on_connect(uv_connect_t* req, int status) {

  ASSERT(0 == status);

  do_write((uv_stream_t*)&client, on_write_close_immediately);

}

TEST_IMPL(tcp_read_stop_start) {

  uv_loop_t* loop = uv_default_loop();

  { /* Server */

    struct sockaddr_in addr;

    ASSERT(0 == uv_ip4_addr("0.0.0.0", TEST_PORT, &addr));

    ASSERT(0 == uv_tcp_init(loop, &server));

    ASSERT(0 == uv_tcp_bind(&server, (struct sockaddr*) & addr, 0));

    ASSERT(0 == uv_listen((uv_stream_t*)&server, 10, on_connection));

  }

  { /* Client */

    struct sockaddr_in addr;

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

    ASSERT(0 == uv_tcp_init(loop, &client));

    ASSERT(0 == uv_tcp_connect(&connect_req, &client,

                               (const struct sockaddr*) & addr, on_connect));

  }

  ASSERT(0 == uv_run(loop, UV_RUN_DEFAULT));

  ASSERT(read_cb_called >= 2);

  MAKE_VALGRIND_HAPPY();

  return 0;

}