/* 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, const uv_buf_t* buf);

static void alloc_cb(uv_handle_t* handle, size_t suggested_size, uv_buf_t* buf);

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 uv_write_t write_req;

static int write_cb_called;

static int read_cb_called;

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

  int r;

  uv_buf_t buf;

  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);

  buf.base = "hello\n";

  buf.len = 6;

  r = uv_write(&write_req, (uv_stream_t*)&tcp_peer, &buf, 1, write_cb);

  ASSERT(r == 0);

}

static void alloc_cb(uv_handle_t* handle,

                     size_t suggested_size,

                     uv_buf_t* buf) {

  static char slab[1024];

  buf->base = slab;

  buf->len = sizeof(slab);

}

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

  if (nread < 0) {

    fprintf(stderr, "read_cb error: %s\n", uv_err_name(nread));

    ASSERT(nread == UV_ECONNRESET || nread == UV_EOF);

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

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

  }

  read_cb_called++;

}

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

  ASSERT(req == &connect_req);

  ASSERT(status == 0);

  /* Close the client. */

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

}

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

  ASSERT(status == 0);

  write_cb_called++;

}

TEST_IMPL(tcp_write_to_half_open_connection) {

  struct sockaddr_in addr;

  uv_loop_t* loop;

  int r;

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

  loop = uv_default_loop();

  ASSERT(loop != NULL);

  r = uv_tcp_init(loop, &tcp_server);

  ASSERT(r == 0);

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

  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,

                     (const struct sockaddr*) &addr,

                     connect_cb);

  ASSERT(r == 0);

  r = uv_run(loop, UV_RUN_DEFAULT);

  ASSERT(r == 0);

  ASSERT(write_cb_called > 0);

  ASSERT(read_cb_called > 0);

  MAKE_VALGRIND_HAPPY();

  return 0;

}