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      1 /* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
      2  *
      3  * Permission is hereby granted, free of charge, to any person obtaining a copy
      4  * of this software and associated documentation files (the "Software"), to
      5  * deal in the Software without restriction, including without limitation the
      6  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
      7  * sell copies of the Software, and to permit persons to whom the Software is
      8  * furnished to do so, subject to the following conditions:
      9  *
     10  * The above copyright notice and this permission notice shall be included in
     11  * all copies or substantial portions of the Software.
     12  *
     13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     14  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     15  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     16  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     17  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     18  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
     19  * IN THE SOFTWARE.
     20  */
     21 
     22 #include "uv.h"
     23 #include "task.h"
     24 
     25 #include <errno.h>
     26 #include <string.h> /* memset */
     27 
     28 #define NUM_WRITE_REQS 32
     29 
     30 static uv_tcp_t tcp_handle;
     31 static uv_connect_t connect_req;
     32 
     33 static int write_cb_called;
     34 static int close_cb_called;
     35 
     36 static void connect_cb(uv_connect_t* req, int status);
     37 static void write_cb(uv_write_t* req, int status);
     38 static void close_cb(uv_handle_t* handle);
     39 
     40 
     41 static void connect_cb(uv_connect_t* conn_req, int status) {
     42   uv_write_t* req;
     43   uv_buf_t buf;
     44   int i, r;
     45 
     46   buf = uv_buf_init("PING", 4);
     47   for (i = 0; i < NUM_WRITE_REQS; i++) {
     48     req = malloc(sizeof *req);
     49     ASSERT_NOT_NULL(req);
     50 
     51     r = uv_write(req, (uv_stream_t*)&tcp_handle, &buf, 1, write_cb);
     52     ASSERT_OK(r);
     53   }
     54 
     55   uv_close((uv_handle_t*)&tcp_handle, close_cb);
     56 }
     57 
     58 
     59 static void write_cb(uv_write_t* req, int status) {
     60   /* write callbacks should run before the close callback */
     61   ASSERT_OK(close_cb_called);
     62   ASSERT_PTR_EQ(req->handle, (uv_stream_t*)&tcp_handle);
     63   write_cb_called++;
     64   free(req);
     65 }
     66 
     67 
     68 static void close_cb(uv_handle_t* handle) {
     69   ASSERT_PTR_EQ(handle, (uv_handle_t*)&tcp_handle);
     70   close_cb_called++;
     71 }
     72 
     73 
     74 static void connection_cb(uv_stream_t* server, int status) {
     75   ASSERT_OK(status);
     76 }
     77 
     78 
     79 static void start_server(uv_loop_t* loop, uv_tcp_t* handle) {
     80   struct sockaddr_in addr;
     81   int r;
     82 
     83   ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
     84 
     85   r = uv_tcp_init(loop, handle);
     86   ASSERT_OK(r);
     87 
     88   r = uv_tcp_bind(handle, (const struct sockaddr*) &addr, 0);
     89   ASSERT_OK(r);
     90 
     91   r = uv_listen((uv_stream_t*)handle, 128, connection_cb);
     92   ASSERT_OK(r);
     93 
     94   uv_unref((uv_handle_t*)handle);
     95 }
     96 
     97 
     98 /* Check that pending write requests have their callbacks
     99  * invoked when the handle is closed.
    100  */
    101 TEST_IMPL(tcp_close) {
    102   struct sockaddr_in addr;
    103   uv_tcp_t tcp_server;
    104   uv_loop_t* loop;
    105   int r;
    106 
    107   ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
    108 
    109   loop = uv_default_loop();
    110 
    111   /* We can't use the echo server, it doesn't handle ECONNRESET. */
    112   start_server(loop, &tcp_server);
    113 
    114   r = uv_tcp_init(loop, &tcp_handle);
    115   ASSERT_OK(r);
    116 
    117   r = uv_tcp_connect(&connect_req,
    118                      &tcp_handle,
    119                      (const struct sockaddr*) &addr,
    120                      connect_cb);
    121   ASSERT_OK(r);
    122 
    123   ASSERT_OK(write_cb_called);
    124   ASSERT_OK(close_cb_called);
    125 
    126   r = uv_run(loop, UV_RUN_DEFAULT);
    127   ASSERT_OK(r);
    128 
    129   printf("%d of %d write reqs seen\n", write_cb_called, NUM_WRITE_REQS);
    130 
    131   ASSERT_EQ(write_cb_called, NUM_WRITE_REQS);
    132   ASSERT_EQ(1, close_cb_called);
    133 
    134   MAKE_VALGRIND_HAPPY(loop);
    135   return 0;
    136 }
    137