text: /* 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"
  
  static uv_check_t check_handle;
  static uv_timer_t timer_handle;
  static uv_tcp_t server_handle;
  static uv_tcp_t client_handle;
  static uv_tcp_t peer_handle;
  static uv_write_t write_req;
  static uv_connect_t connect_req;
  
  static unsigned long ticks; /* event loop ticks */
  
  
  static void check_cb(uv_check_t* handle) {
    ticks++;
  }
  
  
  static void timer_cb(uv_timer_t* handle) {
    uv_close((uv_handle_t*) &check_handle, NULL);
    uv_close((uv_handle_t*) &timer_handle, NULL);
    uv_close((uv_handle_t*) &server_handle, NULL);
    uv_close((uv_handle_t*) &client_handle, NULL);
    uv_close((uv_handle_t*) &peer_handle, NULL);
  }
  
  
  static void alloc_cb(uv_handle_t* handle,
                       size_t suggested_size,
                       uv_buf_t* buf) {
    ASSERT(0 && "alloc_cb should not have been called");
  }
  
  
  static void read_cb(uv_stream_t* handle, uv_ssize_t nread, const uv_buf_t* buf) {
    ASSERT(0 && "read_cb should not have been called");
  }
  
  
  static void connect_cb(uv_connect_t* req, int status) {
    ASSERT(req->handle == (uv_stream_t*) &client_handle);
    ASSERT(0 == status);
  }
  
  
  static void write_cb(uv_write_t* req, int status) {
    ASSERT(req->handle == (uv_stream_t*) &peer_handle);
    ASSERT(0 == status);
  }
  
  
  static void connection_cb(uv_stream_t* handle, int status) {
    uv_buf_t buf;
  
    buf = uv_buf_init("PING", 4);
  
    ASSERT(0 == status);
    ASSERT(0 == uv_accept(handle, (uv_stream_t*) &peer_handle));
    ASSERT(0 == uv_read_start((uv_stream_t*) &peer_handle, alloc_cb, read_cb));
    ASSERT(0 == uv_write(&write_req, (uv_stream_t*) &peer_handle,
                         &buf, 1, write_cb));
  }
  
  
  TEST_IMPL(tcp_unexpected_read) {
    struct sockaddr_in addr;
    uv_loop_t* loop;
  
    ASSERT(0 == uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
    loop = uv_default_loop();
  
    ASSERT(0 == uv_timer_init(loop, &timer_handle));
    ASSERT(0 == uv_timer_start(&timer_handle, timer_cb, 1000, 0));
    ASSERT(0 == uv_check_init(loop, &check_handle));
    ASSERT(0 == uv_check_start(&check_handle, check_cb));
    ASSERT(0 == uv_tcp_init(loop, &server_handle));
    ASSERT(0 == uv_tcp_init(loop, &client_handle));
    ASSERT(0 == uv_tcp_init(loop, &peer_handle));
    ASSERT(0 == uv_tcp_bind(&server_handle, (const struct sockaddr*) &addr, 0));
    ASSERT(0 == uv_listen((uv_stream_t*) &server_handle, 1, connection_cb));
    ASSERT(0 == uv_tcp_connect(&connect_req,
                               &client_handle,
                               (const struct sockaddr*) &addr,
                               connect_cb));
    ASSERT(0 == uv_run(loop, UV_RUN_DEFAULT));
  
    /* This is somewhat inexact but the idea is that the event loop should not
     * start busy looping when the server sends a message and the client isn't
     * reading.
     */
    ASSERT(ticks <= 20);
  
    MAKE_VALGRIND_HAPPY();
    return 0;
  }
  