aboutsummaryrefslogtreecommitdiffhomepage
path: root/test/core/iomgr/udp_server_test.c
blob: 12d840632395b13c2a39e229c2afbd2f9f0ff818 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
/*
 *
 * Copyright 2015, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include "src/core/lib/iomgr/port.h"

// This test won't work except with posix sockets enabled
#ifdef GRPC_POSIX_SOCKET

#include "src/core/lib/iomgr/udp_server.h"

#include <netinet/in.h>
#include <string.h>
#include <sys/socket.h>
#include <unistd.h>

#include <grpc/grpc.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <grpc/support/sync.h>
#include <grpc/support/time.h>
#include <grpc/support/useful.h>

#include "src/core/lib/channel/channel_args.h"
#include "src/core/lib/iomgr/ev_posix.h"
#include "src/core/lib/iomgr/iomgr.h"
#include "src/core/lib/iomgr/socket_factory_posix.h"
#include "test/core/util/test_config.h"

#define LOG_TEST(x) gpr_log(GPR_INFO, "%s", #x)

static grpc_pollset *g_pollset;
static gpr_mu *g_mu;
static int g_number_of_reads = 0;
static int g_number_of_writes = 0;
static int g_number_of_bytes_read = 0;
static int g_number_of_orphan_calls = 0;

static void on_read(grpc_exec_ctx *exec_ctx, grpc_fd *emfd, void *user_data) {
  char read_buffer[512];
  ssize_t byte_count;

  gpr_mu_lock(g_mu);
  byte_count =
      recv(grpc_fd_wrapped_fd(emfd), read_buffer, sizeof(read_buffer), 0);

  g_number_of_reads++;
  g_number_of_bytes_read += (int)byte_count;

  GPR_ASSERT(
      GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(g_pollset, NULL)));
  gpr_mu_unlock(g_mu);
}

static void on_write(grpc_exec_ctx *exec_ctx, grpc_fd *emfd, void *user_data) {
  gpr_mu_lock(g_mu);
  g_number_of_writes++;

  GPR_ASSERT(
      GRPC_LOG_IF_ERROR("pollset_kick", grpc_pollset_kick(g_pollset, NULL)));
  gpr_mu_unlock(g_mu);
}

static void on_fd_orphaned(grpc_exec_ctx *exec_ctx, grpc_fd *emfd,
                           void *user_data) {
  gpr_log(GPR_INFO, "gRPC FD about to be orphaned: %d",
          grpc_fd_wrapped_fd(emfd));
  g_number_of_orphan_calls++;
}

struct test_socket_factory {
  grpc_socket_factory base;
  int number_of_socket_calls;
  int number_of_bind_calls;
};
typedef struct test_socket_factory test_socket_factory;

static int test_socket_factory_socket(grpc_socket_factory *factory, int domain,
                                      int type, int protocol) {
  test_socket_factory *f = (test_socket_factory *)factory;
  f->number_of_socket_calls++;
  return socket(domain, type, protocol);
}

static int test_socket_factory_bind(grpc_socket_factory *factory, int sockfd,
                                    const grpc_resolved_address *addr) {
  test_socket_factory *f = (test_socket_factory *)factory;
  f->number_of_bind_calls++;
  return bind(sockfd, (struct sockaddr *)addr->addr, (socklen_t)addr->len);
}

static int test_socket_factory_compare(grpc_socket_factory *a,
                                       grpc_socket_factory *b) {
  return GPR_ICMP(a, b);
}

static void test_socket_factory_destroy(grpc_socket_factory *factory) {
  test_socket_factory *f = (test_socket_factory *)factory;
  gpr_free(f);
}

static const grpc_socket_factory_vtable test_socket_factory_vtable = {
    test_socket_factory_socket, test_socket_factory_bind,
    test_socket_factory_compare, test_socket_factory_destroy};

static test_socket_factory *test_socket_factory_create(void) {
  test_socket_factory *factory = gpr_malloc(sizeof(test_socket_factory));
  grpc_socket_factory_init(&factory->base, &test_socket_factory_vtable);
  factory->number_of_socket_calls = 0;
  factory->number_of_bind_calls = 0;
  return factory;
}

static void test_no_op(void) {
  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
  grpc_udp_server *s = grpc_udp_server_create(NULL);
  grpc_udp_server_destroy(&exec_ctx, s, NULL);
  grpc_exec_ctx_finish(&exec_ctx);
}

static void test_no_op_with_start(void) {
  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
  grpc_udp_server *s = grpc_udp_server_create(NULL);
  LOG_TEST("test_no_op_with_start");
  grpc_udp_server_start(&exec_ctx, s, NULL, 0, NULL);
  grpc_udp_server_destroy(&exec_ctx, s, NULL);
  grpc_exec_ctx_finish(&exec_ctx);
}

static void test_no_op_with_port(void) {
  g_number_of_orphan_calls = 0;
  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
  grpc_resolved_address resolved_addr;
  struct sockaddr_in *addr = (struct sockaddr_in *)resolved_addr.addr;
  grpc_udp_server *s = grpc_udp_server_create(NULL);
  LOG_TEST("test_no_op_with_port");

  memset(&resolved_addr, 0, sizeof(resolved_addr));
  resolved_addr.len = sizeof(struct sockaddr_in);
  addr->sin_family = AF_INET;
  GPR_ASSERT(grpc_udp_server_add_port(s, &resolved_addr, on_read, on_write,
                                      on_fd_orphaned));

  grpc_udp_server_destroy(&exec_ctx, s, NULL);
  grpc_exec_ctx_finish(&exec_ctx);

  /* The server had a single FD, which should have been orphaned. */
  GPR_ASSERT(g_number_of_orphan_calls == 1);
}

static void test_no_op_with_port_and_socket_factory(void) {
  g_number_of_orphan_calls = 0;
  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
  grpc_resolved_address resolved_addr;
  struct sockaddr_in *addr = (struct sockaddr_in *)resolved_addr.addr;

  test_socket_factory *socket_factory = test_socket_factory_create();
  grpc_arg socket_factory_arg =
      grpc_socket_factory_to_arg(&socket_factory->base);
  grpc_channel_args *channel_args =
      grpc_channel_args_copy_and_add(NULL, &socket_factory_arg, 1);
  grpc_udp_server *s = grpc_udp_server_create(channel_args);
  grpc_channel_args_destroy(&exec_ctx, channel_args);

  LOG_TEST("test_no_op_with_port_and_socket_factory");

  memset(&resolved_addr, 0, sizeof(resolved_addr));
  resolved_addr.len = sizeof(struct sockaddr_in);
  addr->sin_family = AF_INET;
  GPR_ASSERT(grpc_udp_server_add_port(s, &resolved_addr, on_read, on_write,
                                      on_fd_orphaned));
  GPR_ASSERT(socket_factory->number_of_socket_calls == 1);
  GPR_ASSERT(socket_factory->number_of_bind_calls == 1);

  grpc_udp_server_destroy(&exec_ctx, s, NULL);
  grpc_exec_ctx_finish(&exec_ctx);
  grpc_socket_factory_unref(&socket_factory->base);

  /* The server had a single FD, which should have been orphaned. */
  GPR_ASSERT(g_number_of_orphan_calls == 1);
}

static void test_no_op_with_port_and_start(void) {
  g_number_of_orphan_calls = 0;
  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
  grpc_resolved_address resolved_addr;
  struct sockaddr_in *addr = (struct sockaddr_in *)resolved_addr.addr;
  grpc_udp_server *s = grpc_udp_server_create(NULL);
  LOG_TEST("test_no_op_with_port_and_start");

  memset(&resolved_addr, 0, sizeof(resolved_addr));
  resolved_addr.len = sizeof(struct sockaddr_in);
  addr->sin_family = AF_INET;
  GPR_ASSERT(grpc_udp_server_add_port(s, &resolved_addr, on_read, on_write,
                                      on_fd_orphaned));

  grpc_udp_server_start(&exec_ctx, s, NULL, 0, NULL);

  grpc_udp_server_destroy(&exec_ctx, s, NULL);
  grpc_exec_ctx_finish(&exec_ctx);

  /* The server had a single FD, which is orphaned once in *
   * deactivated_all_ports, and once in grpc_udp_server_destroy. */
  GPR_ASSERT(g_number_of_orphan_calls == 2);
}

static void test_receive(int number_of_clients) {
  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
  grpc_resolved_address resolved_addr;
  struct sockaddr_storage *addr = (struct sockaddr_storage *)resolved_addr.addr;
  int clifd, svrfd;
  grpc_udp_server *s = grpc_udp_server_create(NULL);
  int i;
  int number_of_reads_before;
  gpr_timespec deadline;
  grpc_pollset *pollsets[1];
  LOG_TEST("test_receive");
  gpr_log(GPR_INFO, "clients=%d", number_of_clients);

  g_number_of_bytes_read = 0;
  g_number_of_orphan_calls = 0;

  memset(&resolved_addr, 0, sizeof(resolved_addr));
  resolved_addr.len = sizeof(struct sockaddr_storage);
  addr->ss_family = AF_INET;
  GPR_ASSERT(grpc_udp_server_add_port(s, &resolved_addr, on_read, on_write,
                                      on_fd_orphaned));

  svrfd = grpc_udp_server_get_fd(s, 0);
  GPR_ASSERT(svrfd >= 0);
  GPR_ASSERT(getsockname(svrfd, (struct sockaddr *)addr,
                         (socklen_t *)&resolved_addr.len) == 0);
  GPR_ASSERT(resolved_addr.len <= sizeof(struct sockaddr_storage));

  pollsets[0] = g_pollset;
  grpc_udp_server_start(&exec_ctx, s, pollsets, 1, NULL);

  gpr_mu_lock(g_mu);

  for (i = 0; i < number_of_clients; i++) {
    deadline = grpc_timeout_seconds_to_deadline(10);

    number_of_reads_before = g_number_of_reads;
    /* Create a socket, send a packet to the UDP server. */
    clifd = socket(addr->ss_family, SOCK_DGRAM, 0);
    GPR_ASSERT(clifd >= 0);
    GPR_ASSERT(connect(clifd, (struct sockaddr *)addr,
                       (socklen_t)resolved_addr.len) == 0);
    GPR_ASSERT(5 == write(clifd, "hello", 5));
    while (g_number_of_reads == number_of_reads_before &&
           gpr_time_cmp(deadline, gpr_now(deadline.clock_type)) > 0) {
      grpc_pollset_worker *worker = NULL;
      GPR_ASSERT(GRPC_LOG_IF_ERROR(
          "pollset_work",
          grpc_pollset_work(&exec_ctx, g_pollset, &worker,
                            gpr_now(GPR_CLOCK_MONOTONIC), deadline)));
      gpr_mu_unlock(g_mu);
      grpc_exec_ctx_finish(&exec_ctx);
      gpr_mu_lock(g_mu);
    }
    GPR_ASSERT(g_number_of_reads == number_of_reads_before + 1);
    close(clifd);
  }
  GPR_ASSERT(g_number_of_bytes_read == 5 * number_of_clients);

  gpr_mu_unlock(g_mu);

  grpc_udp_server_destroy(&exec_ctx, s, NULL);
  grpc_exec_ctx_finish(&exec_ctx);

  /* The server had a single FD, which is orphaned once in *
   * deactivated_all_ports, and once in grpc_udp_server_destroy. */
  GPR_ASSERT(g_number_of_orphan_calls == 2);

  /* The write callback should have fired a few times. */
  GPR_ASSERT(g_number_of_writes > 0);
}

static void destroy_pollset(grpc_exec_ctx *exec_ctx, void *p,
                            grpc_error *error) {
  grpc_pollset_destroy(p);
}

int main(int argc, char **argv) {
  grpc_closure destroyed;
  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
  grpc_test_init(argc, argv);
  grpc_init();
  g_pollset = gpr_zalloc(grpc_pollset_size());
  grpc_pollset_init(g_pollset, &g_mu);

  test_no_op();
  test_no_op_with_start();
  test_no_op_with_port();
  test_no_op_with_port_and_socket_factory();
  test_no_op_with_port_and_start();
  test_receive(1);
  test_receive(10);

  grpc_closure_init(&destroyed, destroy_pollset, g_pollset,
                    grpc_schedule_on_exec_ctx);
  grpc_pollset_shutdown(&exec_ctx, g_pollset, &destroyed);
  grpc_exec_ctx_finish(&exec_ctx);
  gpr_free(g_pollset);
  grpc_shutdown();
  return 0;
}

#else /* GRPC_POSIX_SOCKET */

int main(int argc, char **argv) { return 1; }

#endif /* GRPC_POSIX_SOCKET */