/* Copyright libuv project and 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 <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "uv.h"

#include "task.h"

static uv_tcp_t server;

static uv_tcp_t client;

static uv_tcp_t incoming;

static int connect_cb_called;

static int close_cb_called;

static int connection_cb_called;

static uv_write_t write_req;

static char hello[] = "HELLO!";

static void close_cb(uv_handle_t* handle) {

  close_cb_called++;

}

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

  ASSERT(status == 0);

}

static void conn_alloc_cb(uv_handle_t* handle, size_t size, uv_buf_t* buf) {

  /* Do nothing, read_cb should be called with UV_ENOBUFS. */

}

static void conn_read_cb(uv_stream_t* stream,

                         ssize_t nread,

                         const uv_buf_t* buf) {

  ASSERT(nread == UV_ENOBUFS);

  ASSERT(buf->base == NULL);

  ASSERT(buf->len == 0);

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

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

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

}

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

  int r;

  uv_buf_t buf;

  ASSERT(status == 0);

  connect_cb_called++;

  buf = uv_buf_init(hello, sizeof(hello));

  r = uv_write(&write_req, req->handle, &buf, 1, write_cb);

  ASSERT(r == 0);

}

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

  ASSERT(status == 0);

  ASSERT(0 == uv_tcp_init(tcp->loop, &incoming));

  ASSERT(0 == uv_accept(tcp, (uv_stream_t*) &incoming));

  ASSERT(0 == uv_read_start((uv_stream_t*) &incoming,

                            conn_alloc_cb,

                            conn_read_cb));

  connection_cb_called++;

}

static void start_server(void) {

  struct sockaddr_in addr;

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

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

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

  ASSERT(0 == uv_listen((uv_stream_t*) &server, 128, connection_cb));

}

TEST_IMPL(tcp_alloc_cb_fail) {

  uv_connect_t connect_req;

  struct sockaddr_in addr;

  start_server();

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

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

  ASSERT(0 == uv_tcp_connect(&connect_req,

                             &client,

                             (struct sockaddr*) &addr,

                             connect_cb));

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

  ASSERT(connect_cb_called == 1);

  ASSERT(connection_cb_called == 1);

  ASSERT(close_cb_called == 3);

  MAKE_VALGRIND_HAPPY();

  return 0;

}