libuv-svace-build

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/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to
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 * deal in the Software without restriction, including without limitation the
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 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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 * sell copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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 * IN THE SOFTWARE.
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 */
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/* this test is Unix only */
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#ifndef _WIN32
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#include "uv.h"
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#include "task.h"
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#include <stdio.h>
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#include <string.h>
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static struct sockaddr_in addr;
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static uv_tcp_t tcp_server;
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static uv_tcp_t tcp_outgoing[2];
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static uv_tcp_t tcp_incoming[ARRAY_SIZE(tcp_outgoing)];
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static uv_connect_t connect_reqs[ARRAY_SIZE(tcp_outgoing)];
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static uv_tcp_t tcp_check;
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static uv_connect_t tcp_check_req;
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static uv_write_t write_reqs[ARRAY_SIZE(tcp_outgoing)];
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static unsigned int got_connections;
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static unsigned int close_cb_called;
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static unsigned int write_cb_called;
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static unsigned int read_cb_called;
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static unsigned int pending_incoming;
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static void close_cb(uv_handle_t* handle) {
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  close_cb_called++;
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}
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static void write_cb(uv_write_t* req, int status) {
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  ASSERT_OK(status);
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  write_cb_called++;
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}
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static void connect_cb(uv_connect_t* req, int status) {
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  unsigned int i;
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  uv_buf_t buf;
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  uv_stream_t* outgoing;
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  if (req == &tcp_check_req) {
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    ASSERT(status);
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    /*
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     * Time to finish the test: close both the check and pending incoming
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     * connections
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     */
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    uv_close((uv_handle_t*) &tcp_incoming[pending_incoming], close_cb);
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    uv_close((uv_handle_t*) &tcp_check, close_cb);
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    return;
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  }
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  ASSERT_OK(status);
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  ASSERT_LE(connect_reqs, req);
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  ASSERT_LE(req, connect_reqs + ARRAY_SIZE(connect_reqs));
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  i = req - connect_reqs;
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  buf = uv_buf_init("x", 1);
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  outgoing = (uv_stream_t*) &tcp_outgoing[i];
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  ASSERT_OK(uv_write(&write_reqs[i], outgoing, &buf, 1, write_cb));
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}
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static void alloc_cb(uv_handle_t* handle, size_t size, uv_buf_t* buf) {
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  static char slab[1];
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  buf->base = slab;
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  buf->len = sizeof(slab);
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}
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static void read_cb(uv_stream_t* stream, ssize_t nread, const uv_buf_t* buf) {
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  uv_loop_t* loop;
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  unsigned int i;
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  pending_incoming = (uv_tcp_t*) stream - &tcp_incoming[0];
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  ASSERT_LT(pending_incoming, got_connections);
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  ASSERT_OK(uv_read_stop(stream));
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  ASSERT_EQ(1, nread);
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  loop = stream->loop;
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  read_cb_called++;
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  /* Close all active incomings, except current one */
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  for (i = 0; i < got_connections; i++) {
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    if (i != pending_incoming)
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      uv_close((uv_handle_t*) &tcp_incoming[i], close_cb);
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  }
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  /* Close server, so no one will connect to it */
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  uv_close((uv_handle_t*) &tcp_server, close_cb);
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  /* Create new fd that should be one of the closed incomings */
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  ASSERT_OK(uv_tcp_init(loop, &tcp_check));
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  ASSERT_OK(uv_tcp_connect(&tcp_check_req,
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                           &tcp_check,
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                           (const struct sockaddr*) &addr,
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                           connect_cb));
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  ASSERT_OK(uv_read_start((uv_stream_t*) &tcp_check, alloc_cb, read_cb));
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}
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static void connection_cb(uv_stream_t* server, int status) {
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  unsigned int i;
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  uv_tcp_t* incoming;
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  ASSERT_PTR_EQ(server, (uv_stream_t*) &tcp_server);
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  /* Ignore tcp_check connection */
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  if (got_connections == ARRAY_SIZE(tcp_incoming))
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    return;
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  /* Accept everyone */
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  incoming = &tcp_incoming[got_connections++];
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  ASSERT_OK(uv_tcp_init(server->loop, incoming));
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  ASSERT_OK(uv_accept(server, (uv_stream_t*) incoming));
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  if (got_connections != ARRAY_SIZE(tcp_incoming))
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    return;
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  /* Once all clients are accepted - start reading */
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  for (i = 0; i < ARRAY_SIZE(tcp_incoming); i++) {
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    incoming = &tcp_incoming[i];
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    ASSERT_OK(uv_read_start((uv_stream_t*) incoming, alloc_cb, read_cb));
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  }
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}
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TEST_IMPL(tcp_close_accept) {
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  unsigned int i;
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  uv_loop_t* loop;
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  uv_tcp_t* client;
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  /*
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   * A little explanation of what goes on below:
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   *
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   * We'll create server and connect to it using two clients, each writing one
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   * byte once connected.
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   *
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   * When all clients will be accepted by server - we'll start reading from them
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   * and, on first client's first byte, will close second client and server.
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   * After that, we'll immediately initiate new connection to server using
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   * tcp_check handle (thus, reusing fd from second client).
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   *
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   * In this situation uv__io_poll()'s event list should still contain read
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   * event for second client, and, if not cleaned up properly, `tcp_check` will
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   * receive stale event of second incoming and invoke `connect_cb` with zero
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   * status.
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   */
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  loop = uv_default_loop();
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  ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
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  ASSERT_OK(uv_tcp_init(loop, &tcp_server));
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  ASSERT_OK(uv_tcp_bind(&tcp_server, (const struct sockaddr*) &addr, 0));
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  ASSERT_OK(uv_listen((uv_stream_t*) &tcp_server,
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                      ARRAY_SIZE(tcp_outgoing),
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                      connection_cb));
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  for (i = 0; i < ARRAY_SIZE(tcp_outgoing); i++) {
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    client = tcp_outgoing + i;
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    ASSERT_OK(uv_tcp_init(loop, client));
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    ASSERT_OK(uv_tcp_connect(&connect_reqs[i],
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                             client,
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                             (const struct sockaddr*) &addr,
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                             connect_cb));
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  }
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  uv_run(loop, UV_RUN_DEFAULT);
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  ASSERT_EQ(ARRAY_SIZE(tcp_outgoing), got_connections);
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  ASSERT_EQ((ARRAY_SIZE(tcp_outgoing) + 2), close_cb_called);
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  ASSERT_EQ(ARRAY_SIZE(tcp_outgoing), write_cb_called);
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  ASSERT_EQ(1, read_cb_called);
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  MAKE_VALGRIND_HAPPY(loop);
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  return 0;
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}
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#else
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typedef int file_has_no_tests; /* ISO C forbids an empty translation unit. */
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#endif /* !_WIN32 */
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