libevent/test/regress_bufferevent.c

   1 /*
   2  * Copyright (c) 2003-2007 Niels Provos <provos@citi.umich.edu>
   3  * Copyright (c) 2007-2010 Niels Provos and Nick Mathewson
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. The name of the author may not be used to endorse or promote products
  14  *    derived from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 /* The old tests here need assertions to work. */
  29 #undef NDEBUG
  30
  31 #ifdef WIN32
  32 #include <winsock2.h>
  33 #include <windows.h>
  34 #endif
  35
  36 #include "event2/event-config.h"
  37
  38 #include <sys/types.h>
  39 #include <sys/stat.h>
  40 #ifdef _EVENT_HAVE_SYS_TIME_H
  41 #include <sys/time.h>
  42 #endif
  43 #include <sys/queue.h>
  44 #ifndef WIN32
  45 #include <sys/socket.h>
  46 #include <sys/wait.h>
  47 #include <signal.h>
  48 #include <unistd.h>
  49 #include <netdb.h>
  50 #include <netinet/in.h>
  51 #endif
  52 #include <fcntl.h>
  53 #include <signal.h>
  54 #include <stdlib.h>
  55 #include <stdio.h>
  56 #include <string.h>
  57 #include <errno.h>
  58 #include <assert.h>
  59
  60 #ifdef _EVENT_HAVE_ARPA_INET_H
  61 #include <arpa/inet.h>
  62 #endif
  63
  64 #include "event2/event-config.h"
  65 #include "event2/event.h"
  66 #include "event2/event_struct.h"
  67 #include "event2/event_compat.h"
  68 #include "event2/tag.h"
  69 #include "event2/buffer.h"
  70 #include "event2/bufferevent.h"
  71 #include "event2/bufferevent_compat.h"
  72 #include "event2/bufferevent_struct.h"
  73 #include "event2/listener.h"
  74 #include "event2/util.h"
  75
  76 #include "bufferevent-internal.h"
  77 #ifdef WIN32
  78 #include "iocp-internal.h"
  79 #endif
  80
  81 #include "regress.h"
  82 #include "regress_testutils.h"
  83
  84 /*
  85  * simple bufferevent test
  86  */
  87
  88 static void
  89 readcb(struct bufferevent *bev, void *arg)
  90 {
  91         if (evbuffer_get_length(bev->input) == 8333) {
  92                 struct evbuffer *evbuf = evbuffer_new();
  93                 assert(evbuf != NULL);
  94
  95                 /* gratuitous test of bufferevent_read_buffer */
  96                 bufferevent_read_buffer(bev, evbuf);
  97
  98                 bufferevent_disable(bev, EV_READ);
  99
 100                 if (evbuffer_get_length(evbuf) == 8333) {
 101                         test_ok++;
 102                 }
 103
 104                 evbuffer_free(evbuf);
 105         }
 106 }
 107
 108 static void
 109 writecb(struct bufferevent *bev, void *arg)
 110 {
 111         if (evbuffer_get_length(bev->output) == 0) {
 112                 test_ok++;
 113         }
 114 }
 115
 116 static void
 117 errorcb(struct bufferevent *bev, short what, void *arg)
 118 {
 119         test_ok = -2;
 120 }
 121
 122 static void
 123 test_bufferevent_impl(int use_pair)
 124 {
 125         struct bufferevent *bev1 = NULL, *bev2 = NULL;
 126         char buffer[8333];
 127         int i;
 128
 129         if (use_pair) {
 130                 struct bufferevent *pair[2];
 131                 tt_assert(0 == bufferevent_pair_new(NULL, 0, pair));
 132                 bev1 = pair[0];
 133                 bev2 = pair[1];
 134                 bufferevent_setcb(bev1, readcb, writecb, errorcb, NULL);
 135                 bufferevent_setcb(bev2, readcb, writecb, errorcb, NULL);
 136                 tt_int_op(bufferevent_getfd(bev1), ==, -1);
 137                 tt_ptr_op(bufferevent_get_underlying(bev1), ==, NULL);
 138                 tt_ptr_op(bufferevent_pair_get_partner(bev1), ==, bev2);
 139                 tt_ptr_op(bufferevent_pair_get_partner(bev2), ==, bev1);
 140         } else {
 141                 bev1 = bufferevent_new(pair[0], readcb, writecb, errorcb, NULL);
 142                 bev2 = bufferevent_new(pair[1], readcb, writecb, errorcb, NULL);
 143                 tt_int_op(bufferevent_getfd(bev1), ==, pair[0]);
 144                 tt_ptr_op(bufferevent_get_underlying(bev1), ==, NULL);
 145                 tt_ptr_op(bufferevent_pair_get_partner(bev1), ==, NULL);
 146                 tt_ptr_op(bufferevent_pair_get_partner(bev2), ==, NULL);
 147         }
 148
 149         bufferevent_disable(bev1, EV_READ);
 150         bufferevent_enable(bev2, EV_READ);
 151
 152         tt_int_op(bufferevent_get_enabled(bev1), ==, EV_WRITE);
 153         tt_int_op(bufferevent_get_enabled(bev2), ==, EV_WRITE|EV_READ);
 154
 155         for (i = 0; i < (int)sizeof(buffer); i++)
 156                 buffer[i] = i;
 157
 158         bufferevent_write(bev1, buffer, sizeof(buffer));
 159
 160         event_dispatch();
 161
 162         bufferevent_free(bev1);
 163         tt_ptr_op(bufferevent_pair_get_partner(bev2), ==, NULL);
 164         bufferevent_free(bev2);
 165
 166         if (test_ok != 2)
 167                 test_ok = 0;
 168 end:
 169         ;
 170 }
 171
 172 static void
 173 test_bufferevent(void)
 174 {
 175         test_bufferevent_impl(0);
 176 }
 177
 178 static void
 179 test_bufferevent_pair(void)
 180 {
 181         test_bufferevent_impl(1);
 182 }
 183
 184 /*
 185  * test watermarks and bufferevent
 186  */
 187
 188 static void
 189 wm_readcb(struct bufferevent *bev, void *arg)
 190 {
 191         struct evbuffer *evbuf = evbuffer_new();
 192         int len = (int)evbuffer_get_length(bev->input);
 193         static int nread;
 194
 195         assert(len >= 10 && len <= 20);
 196
 197         assert(evbuf != NULL);
 198
 199         /* gratuitous test of bufferevent_read_buffer */
 200         bufferevent_read_buffer(bev, evbuf);
 201
 202         nread += len;
 203         if (nread == 65000) {
 204                 bufferevent_disable(bev, EV_READ);
 205                 test_ok++;
 206         }
 207
 208         evbuffer_free(evbuf);
 209 }
 210
 211 static void
 212 wm_writecb(struct bufferevent *bev, void *arg)
 213 {
 214         assert(evbuffer_get_length(bev->output) <= 100);
 215         if (evbuffer_get_length(bev->output) == 0) {
 216                 evbuffer_drain(bev->output, evbuffer_get_length(bev->output));
 217                 test_ok++;
 218         }
 219 }
 220
 221 static void
 222 wm_errorcb(struct bufferevent *bev, short what, void *arg)
 223 {
 224         test_ok = -2;
 225 }
 226
 227 static void
 228 test_bufferevent_watermarks_impl(int use_pair)
 229 {
 230         struct bufferevent *bev1 = NULL, *bev2 = NULL;
 231         char buffer[65000];
 232         int i;
 233         test_ok = 0;
 234
 235         if (use_pair) {
 236                 struct bufferevent *pair[2];
 237                 tt_assert(0 == bufferevent_pair_new(NULL, 0, pair));
 238                 bev1 = pair[0];
 239                 bev2 = pair[1];
 240                 bufferevent_setcb(bev1, NULL, wm_writecb, errorcb, NULL);
 241                 bufferevent_setcb(bev2, wm_readcb, NULL, errorcb, NULL);
 242         } else {
 243                 bev1 = bufferevent_new(pair[0], NULL, wm_writecb, wm_errorcb, NULL);
 244                 bev2 = bufferevent_new(pair[1], wm_readcb, NULL, wm_errorcb, NULL);
 245         }
 246         bufferevent_disable(bev1, EV_READ);
 247         bufferevent_enable(bev2, EV_READ);
 248
 249         for (i = 0; i < (int)sizeof(buffer); i++)
 250                 buffer[i] = (char)i;
 251
 252         /* limit the reading on the receiving bufferevent */
 253         bufferevent_setwatermark(bev2, EV_READ, 10, 20);
 254
 255         /* Tell the sending bufferevent not to notify us till it's down to
 256            100 bytes. */
 257         bufferevent_setwatermark(bev1, EV_WRITE, 100, 2000);
 258
 259         bufferevent_write(bev1, buffer, sizeof(buffer));
 260
 261         event_dispatch();
 262
 263         tt_int_op(test_ok, ==, 2);
 264
 265         /* The write callback drained all the data from outbuf, so we
 266          * should have removed the write event... */
 267         tt_assert(!event_pending(&bev2->ev_write, EV_WRITE, NULL));
 268
 269 end:
 270         bufferevent_free(bev1);
 271         bufferevent_free(bev2);
 272 }
 273
 274 static void
 275 test_bufferevent_watermarks(void)
 276 {
 277         test_bufferevent_watermarks_impl(0);
 278 }
 279
 280 static void
 281 test_bufferevent_pair_watermarks(void)
 282 {
 283         test_bufferevent_watermarks_impl(1);
 284 }
 285
 286 /*
 287  * Test bufferevent filters
 288  */
 289
 290 /* strip an 'x' from each byte */
 291
 292 static enum bufferevent_filter_result
 293 bufferevent_input_filter(struct evbuffer *src, struct evbuffer *dst,
 294     ev_ssize_t lim, enum bufferevent_flush_mode state, void *ctx)
 295 {
 296         const unsigned char *buffer;
 297         unsigned i;
 298
 299         buffer = evbuffer_pullup(src, evbuffer_get_length(src));
 300         for (i = 0; i < evbuffer_get_length(src); i += 2) {
 301                 assert(buffer[i] == 'x');
 302                 evbuffer_add(dst, buffer + i + 1, 1);
 303
 304                 if (i + 2 > evbuffer_get_length(src))
 305                         break;
 306         }
 307
 308         evbuffer_drain(src, i);
 309         return (BEV_OK);
 310 }
 311
 312 /* add an 'x' before each byte */
 313
 314 static enum bufferevent_filter_result
 315 bufferevent_output_filter(struct evbuffer *src, struct evbuffer *dst,
 316     ev_ssize_t lim, enum bufferevent_flush_mode state, void *ctx)
 317 {
 318         const unsigned char *buffer;
 319         unsigned i;
 320
 321         buffer = evbuffer_pullup(src, evbuffer_get_length(src));
 322         for (i = 0; i < evbuffer_get_length(src); ++i) {
 323                 evbuffer_add(dst, "x", 1);
 324                 evbuffer_add(dst, buffer + i, 1);
 325         }
 326
 327         evbuffer_drain(src, evbuffer_get_length(src));
 328         return (BEV_OK);
 329 }
 330
 331 static void
 332 test_bufferevent_filters_impl(int use_pair)
 333 {
 334         struct bufferevent *bev1 = NULL, *bev2 = NULL;
 335         struct bufferevent *bev1_base = NULL, *bev2_base = NULL;
 336         char buffer[8333];
 337         int i;
 338
 339         test_ok = 0;
 340
 341         if (use_pair) {
 342                 struct bufferevent *pair[2];
 343                 tt_assert(0 == bufferevent_pair_new(NULL, 0, pair));
 344                 bev1 = pair[0];
 345                 bev2 = pair[1];
 346         } else {
 347                 bev1 = bufferevent_socket_new(NULL, pair[0], 0);
 348                 bev2 = bufferevent_socket_new(NULL, pair[1], 0);
 349         }
 350         bev1_base = bev1;
 351         bev2_base = bev2;
 352
 353         for (i = 0; i < (int)sizeof(buffer); i++)
 354                 buffer[i] = i;
 355
 356         bev1 = bufferevent_filter_new(bev1, NULL, bufferevent_output_filter,
 357                                       BEV_OPT_CLOSE_ON_FREE, NULL, NULL);
 358
 359         bev2 = bufferevent_filter_new(bev2, bufferevent_input_filter,
 360                                       NULL, BEV_OPT_CLOSE_ON_FREE, NULL, NULL);
 361         bufferevent_setcb(bev1, NULL, writecb, errorcb, NULL);
 362         bufferevent_setcb(bev2, readcb, NULL, errorcb, NULL);
 363
 364         tt_ptr_op(bufferevent_get_underlying(bev1), ==, bev1_base);
 365         tt_ptr_op(bufferevent_get_underlying(bev2), ==, bev2_base);
 366         tt_int_op(bufferevent_getfd(bev1), ==, -1);
 367         tt_int_op(bufferevent_getfd(bev2), ==, -1);
 368
 369         bufferevent_disable(bev1, EV_READ);
 370         bufferevent_enable(bev2, EV_READ);
 371         /* insert some filters */
 372         bufferevent_write(bev1, buffer, sizeof(buffer));
 373
 374         event_dispatch();
 375
 376         if (test_ok != 2)
 377                 test_ok = 0;
 378
 379 end:
 380         bufferevent_free(bev1);
 381         bufferevent_free(bev2);
 382
 383 }
 384
 385 static void
 386 test_bufferevent_filters(void)
 387 {
 388         test_bufferevent_filters_impl(0);
 389 }
 390
 391 static void
 392 test_bufferevent_pair_filters(void)
 393 {
 394         test_bufferevent_filters_impl(1);
 395 }
 396
 397
 398 static void
 399 sender_writecb(struct bufferevent *bev, void *ctx)
 400 {
 401         if (evbuffer_get_length(bufferevent_get_output(bev)) == 0) {
 402                 bufferevent_disable(bev,EV_READ|EV_WRITE);
 403                 bufferevent_free(bev);
 404         }
 405 }
 406
 407 static void
 408 sender_errorcb(struct bufferevent *bev, short what, void *ctx)
 409 {
 410         TT_FAIL(("Got sender error %d",(int)what));
 411 }
 412
 413 static int bufferevent_connect_test_flags = 0;
 414 static int n_strings_read = 0;
 415 static int n_reads_invoked = 0;
 416
 417 #define TEST_STR "Now is the time for all good events to signal for " \
 418         "the good of their protocol"
 419 static void
 420 listen_cb(struct evconnlistener *listener, evutil_socket_t fd,
 421     struct sockaddr *sa, int socklen, void *arg)
 422 {
 423         struct event_base *base = arg;
 424         struct bufferevent *bev;
 425         const char s[] = TEST_STR;
 426         TT_BLATHER(("Got a request on socket %d", (int)fd ));
 427         bev = bufferevent_socket_new(base, fd, bufferevent_connect_test_flags);
 428         tt_assert(bev);
 429         bufferevent_setcb(bev, NULL, sender_writecb, sender_errorcb, NULL);
 430         bufferevent_write(bev, s, sizeof(s));
 431 end:
 432         ;
 433 }
 434
 435 static void
 436 reader_eventcb(struct bufferevent *bev, short what, void *ctx)
 437 {
 438         struct event_base *base = ctx;
 439         if (what & BEV_EVENT_ERROR) {
 440                 perror("foobar");
 441                 TT_FAIL(("got connector error %d", (int)what));
 442                 return;
 443         }
 444         if (what & BEV_EVENT_CONNECTED) {
 445                 bufferevent_enable(bev, EV_READ);
 446         }
 447         if (what & BEV_EVENT_EOF) {
 448                 char buf[512];
 449                 size_t n;
 450                 n = bufferevent_read(bev, buf, sizeof(buf)-1);
 451                 buf[n] = '\0';
 452                 tt_str_op(buf, ==, TEST_STR);
 453                 if (++n_strings_read == 2)
 454                         event_base_loopexit(base, NULL);
 455         }
 456 end:
 457         ;
 458 }
 459
 460 static void
 461 reader_readcb(struct bufferevent *bev, void *ctx)
 462 {
 463         n_reads_invoked++;
 464 }
 465
 466 static void
 467 test_bufferevent_connect(void *arg)
 468 {
 469         struct basic_test_data *data = arg;
 470         struct evconnlistener *lev=NULL;
 471         struct bufferevent *bev1=NULL, *bev2=NULL;
 472         struct sockaddr_in localhost;
 473         struct sockaddr_storage ss;
 474         struct sockaddr *sa;
 475         ev_socklen_t slen;
 476
 477         int be_flags=BEV_OPT_CLOSE_ON_FREE;
 478
 479         if (strstr((char*)data->setup_data, "defer")) {
 480                 be_flags |= BEV_OPT_DEFER_CALLBACKS;
 481         }
 482         if (strstr((char*)data->setup_data, "unlocked")) {
 483                 be_flags |= BEV_OPT_UNLOCK_CALLBACKS;
 484         }
 485         if (strstr((char*)data->setup_data, "lock")) {
 486                 be_flags |= BEV_OPT_THREADSAFE;
 487         }
 488         bufferevent_connect_test_flags = be_flags;
 489 #ifdef WIN32
 490         if (!strcmp((char*)data->setup_data, "unset_connectex")) {
 491                 struct win32_extension_fns *ext =
 492                     (struct win32_extension_fns *)
 493                     event_get_win32_extension_fns();
 494                 ext->ConnectEx = NULL;
 495         }
 496 #endif
 497
 498         memset(&localhost, 0, sizeof(localhost));
 499
 500         localhost.sin_port = 0; /* pick-a-port */
 501         localhost.sin_addr.s_addr = htonl(0x7f000001L);
 502         localhost.sin_family = AF_INET;
 503         sa = (struct sockaddr *)&localhost;
 504         lev = evconnlistener_new_bind(data->base, listen_cb, data->base,
 505             LEV_OPT_CLOSE_ON_FREE|LEV_OPT_REUSEABLE,
 506             16, sa, sizeof(localhost));
 507         tt_assert(lev);
 508
 509         sa = (struct sockaddr *)&ss;
 510         slen = sizeof(ss);
 511         if (regress_get_listener_addr(lev, sa, &slen) < 0) {
 512                 tt_abort_perror("getsockname");
 513         }
 514
 515         tt_assert(!evconnlistener_enable(lev));
 516         bev1 = bufferevent_socket_new(data->base, -1, be_flags);
 517         bev2 = bufferevent_socket_new(data->base, -1, be_flags);
 518         tt_assert(bev1);
 519         tt_assert(bev2);
 520         bufferevent_setcb(bev1, reader_readcb,NULL, reader_eventcb, data->base);
 521         bufferevent_setcb(bev2, reader_readcb,NULL, reader_eventcb, data->base);
 522
 523         bufferevent_enable(bev1, EV_READ);
 524         bufferevent_enable(bev2, EV_READ);
 525
 526         tt_want(!bufferevent_socket_connect(bev1, sa, sizeof(localhost)));
 527         tt_want(!bufferevent_socket_connect(bev2, sa, sizeof(localhost)));
 528
 529         event_base_dispatch(data->base);
 530
 531         tt_int_op(n_strings_read, ==, 2);
 532         tt_int_op(n_reads_invoked, >=, 2);
 533 end:
 534         if (lev)
 535                 evconnlistener_free(lev);
 536
 537         if (bev1)
 538                 bufferevent_free(bev1);
 539
 540         if (bev2)
 541                 bufferevent_free(bev2);
 542 }
 543
 544 static void
 545 want_fail_eventcb(struct bufferevent *bev, short what, void *ctx)
 546 {
 547         struct event_base *base = ctx;
 548         const char *err;
 549         evutil_socket_t s;
 550
 551         if (what & BEV_EVENT_ERROR) {
 552                 s = bufferevent_getfd(bev);
 553                 err = evutil_socket_error_to_string(evutil_socket_geterror(s));
 554                 TT_BLATHER(("connection failure %s", err));
 555                 test_ok = 1;
 556         } else {
 557                 TT_FAIL(("didn't fail? what %hd", what));
 558         }
 559
 560         event_base_loopexit(base, NULL);
 561 }
 562
 563 static void
 564 close_socket_cb(evutil_socket_t fd, short what, void *arg)
 565 {
 566         evutil_socket_t *fdp = arg;
 567         if (*fdp >= 0) {
 568                 evutil_closesocket(*fdp);
 569                 *fdp = -1;
 570         }
 571 }
 572
 573 static void
 574 test_bufferevent_connect_fail(void *arg)
 575 {
 576         struct basic_test_data *data = arg;
 577         struct bufferevent *bev=NULL;
 578         struct sockaddr_in localhost;
 579         struct sockaddr *sa = (struct sockaddr*)&localhost;
 580         evutil_socket_t fake_listener = -1;
 581         ev_socklen_t slen = sizeof(localhost);
 582         struct event close_listener_event;
 583         int close_listener_event_added = 0;
 584         struct timeval one_second = { 1, 0 };
 585         int r;
 586
 587         test_ok = 0;
 588
 589         memset(&localhost, 0, sizeof(localhost));
 590         localhost.sin_port = 0; /* have the kernel pick a port */
 591         localhost.sin_addr.s_addr = htonl(0x7f000001L);
 592         localhost.sin_family = AF_INET;
 593
 594         /* bind, but don't listen or accept. should trigger
 595            "Connection refused" reliably on most platforms. */
 596         fake_listener = socket(localhost.sin_family, SOCK_STREAM, 0);
 597         tt_assert(fake_listener >= 0);
 598         tt_assert(bind(fake_listener, sa, slen) == 0);
 599         tt_assert(getsockname(fake_listener, sa, &slen) == 0);
 600         bev = bufferevent_socket_new(data->base, -1,
 601                 BEV_OPT_CLOSE_ON_FREE | BEV_OPT_DEFER_CALLBACKS);
 602         tt_assert(bev);
 603         bufferevent_setcb(bev, NULL, NULL, want_fail_eventcb, data->base);
 604
 605         r = bufferevent_socket_connect(bev, sa, slen);
 606         /* XXXX we'd like to test the '0' case everywhere, but FreeBSD tells
 607          * detects the error immediately, which is not really wrong of it. */
 608         tt_want(r == 0 || r == -1);
 609
 610         /* Close the listener socket after a second. This should trigger
 611            "connection refused" on some other platforms, including OSX. */
 612         evtimer_assign(&close_listener_event, data->base, close_socket_cb,
 613             &fake_listener);
 614         event_add(&close_listener_event, &one_second);
 615         close_listener_event_added = 1;
 616
 617         event_base_dispatch(data->base);
 618
 619         tt_int_op(test_ok, ==, 1);
 620
 621 end:
 622         if (fake_listener >= 0)
 623                 evutil_closesocket(fake_listener);
 624
 625         if (bev)
 626                 bufferevent_free(bev);
 627
 628         if (close_listener_event_added)
 629                 event_del(&close_listener_event);
 630 }
 631
 632 struct timeout_cb_result {
 633         struct timeval read_timeout_at;
 634         struct timeval write_timeout_at;
 635         struct timeval last_wrote_at;
 636         int n_read_timeouts;
 637         int n_write_timeouts;
 638         int total_calls;
 639 };
 640
 641 static void
 642 bev_timeout_write_cb(struct bufferevent *bev, void *arg)
 643 {
 644         struct timeout_cb_result *res = arg;
 645         evutil_gettimeofday(&res->last_wrote_at, NULL);
 646 }
 647
 648 static void
 649 bev_timeout_event_cb(struct bufferevent *bev, short what, void *arg)
 650 {
 651         struct timeout_cb_result *res = arg;
 652         ++res->total_calls;
 653
 654         if ((what & (BEV_EVENT_READING|BEV_EVENT_TIMEOUT))
 655             == (BEV_EVENT_READING|BEV_EVENT_TIMEOUT)) {
 656                 evutil_gettimeofday(&res->read_timeout_at, NULL);
 657                 ++res->n_read_timeouts;
 658         }
 659         if ((what & (BEV_EVENT_WRITING|BEV_EVENT_TIMEOUT))
 660             == (BEV_EVENT_WRITING|BEV_EVENT_TIMEOUT)) {
 661                 evutil_gettimeofday(&res->write_timeout_at, NULL);
 662                 ++res->n_write_timeouts;
 663         }
 664 }
 665
 666 static void
 667 test_bufferevent_timeouts(void *arg)
 668 {
 669         /* "arg" is a string containing "pair" and/or "filter". */
 670         struct bufferevent *bev1 = NULL, *bev2 = NULL;
 671         struct basic_test_data *data = arg;
 672         int use_pair = 0, use_filter = 0;
 673         struct timeval tv_w, tv_r, started_at;
 674         struct timeout_cb_result res1, res2;
 675         char buf[1024];
 676
 677         memset(&res1, 0, sizeof(res1));
 678         memset(&res2, 0, sizeof(res2));
 679
 680         if (strstr((char*)data->setup_data, "pair"))
 681                 use_pair = 1;
 682         if (strstr((char*)data->setup_data, "filter"))
 683                 use_filter = 1;
 684
 685         if (use_pair) {
 686                 struct bufferevent *p[2];
 687                 tt_int_op(0, ==, bufferevent_pair_new(data->base, 0, p));
 688                 bev1 = p[0];
 689                 bev2 = p[1];
 690         } else {
 691                 bev1 = bufferevent_socket_new(data->base, data->pair[0], 0);
 692                 bev2 = bufferevent_socket_new(data->base, data->pair[1], 0);
 693         }
 694
 695         tt_assert(bev1);
 696         tt_assert(bev2);
 697
 698         if (use_filter) {
 699                 struct bufferevent *bevf1, *bevf2;
 700                 bevf1 = bufferevent_filter_new(bev1, NULL, NULL,
 701                     BEV_OPT_CLOSE_ON_FREE, NULL, NULL);
 702                 bevf2 = bufferevent_filter_new(bev2, NULL, NULL,
 703                     BEV_OPT_CLOSE_ON_FREE, NULL, NULL);
 704                 tt_assert(bevf1);
 705                 tt_assert(bevf2);
 706                 bev1 = bevf1;
 707                 bev2 = bevf2;
 708         }
 709
 710         /* Do this nice and early. */
 711         bufferevent_disable(bev2, EV_READ);
 712
 713         /* bev1 will try to write and read.  Both will time out. */
 714         evutil_gettimeofday(&started_at, NULL);
 715         tv_w.tv_sec = tv_r.tv_sec = 0;
 716         tv_w.tv_usec = 100*1000;
 717         tv_r.tv_usec = 150*1000;
 718         bufferevent_setcb(bev1, NULL, bev_timeout_write_cb,
 719             bev_timeout_event_cb, &res1);
 720         bufferevent_setwatermark(bev1, EV_WRITE, 1024*1024+10, 0);
 721         bufferevent_set_timeouts(bev1, &tv_r, &tv_w);
 722         if (use_pair) {
 723                 /* For a pair, the fact that the other side isn't reading
 724                  * makes the writer stall */
 725                 bufferevent_write(bev1, "ABCDEFG", 7);
 726         } else {
 727                 /* For a real socket, the kernel's TCP buffers can eat a
 728                  * fair number of bytes; make sure that at some point we
 729                  * have some bytes that will stall. */
 730                 struct evbuffer *output = bufferevent_get_output(bev1);
 731                 int i;
 732                 memset(buf, 0xbb, sizeof(buf));
 733                 for (i=0;i<1024;++i) {
 734                         evbuffer_add_reference(output, buf, sizeof(buf),
 735                             NULL, NULL);
 736                 }
 737         }
 738         bufferevent_enable(bev1, EV_READ|EV_WRITE);
 739
 740         /* bev2 has nothing to say, and isn't listening. */
 741         bufferevent_setcb(bev2, NULL,  bev_timeout_write_cb,
 742             bev_timeout_event_cb, &res2);
 743         tv_w.tv_sec = tv_r.tv_sec = 0;
 744         tv_w.tv_usec = 200*1000;
 745         tv_r.tv_usec = 100*1000;
 746         bufferevent_set_timeouts(bev2, &tv_r, &tv_w);
 747         bufferevent_enable(bev2, EV_WRITE);
 748
 749         tv_r.tv_sec = 1;
 750         tv_r.tv_usec = 0;
 751
 752         event_base_loopexit(data->base, &tv_r);
 753         event_base_dispatch(data->base);
 754
 755         /* XXXX Test that actually reading or writing a little resets the
 756          * timeouts. */
 757
 758         /* Each buf1 timeout happens, and happens only once. */
 759         tt_want(res1.n_read_timeouts);
 760         tt_want(res1.n_write_timeouts);
 761         tt_want(res1.n_read_timeouts == 1);
 762         tt_want(res1.n_write_timeouts == 1);
 763
 764         test_timeval_diff_eq(&started_at, &res1.read_timeout_at, 150);
 765         test_timeval_diff_eq(&started_at, &res1.write_timeout_at, 100);
 766
 767 end:
 768         if (bev1)
 769                 bufferevent_free(bev1);
 770         if (bev2)
 771                 bufferevent_free(bev2);
 772 }
 773
 774 struct testcase_t bufferevent_testcases[] = {
 775
 776         LEGACY(bufferevent, TT_ISOLATED),
 777         LEGACY(bufferevent_pair, TT_ISOLATED),
 778         LEGACY(bufferevent_watermarks, TT_ISOLATED),
 779         LEGACY(bufferevent_pair_watermarks, TT_ISOLATED),
 780         LEGACY(bufferevent_filters, TT_ISOLATED),
 781         LEGACY(bufferevent_pair_filters, TT_ISOLATED),
 782         { "bufferevent_connect", test_bufferevent_connect, TT_FORK|TT_NEED_BASE,
 783           &basic_setup, (void*)"" },
 784         { "bufferevent_connect_defer", test_bufferevent_connect,
 785           TT_FORK|TT_NEED_BASE, &basic_setup, (void*)"defer" },
 786         { "bufferevent_connect_lock", test_bufferevent_connect,
 787           TT_FORK|TT_NEED_BASE|TT_NEED_THREADS, &basic_setup, (void*)"lock" },
 788         { "bufferevent_connect_lock_defer", test_bufferevent_connect,
 789           TT_FORK|TT_NEED_BASE|TT_NEED_THREADS, &basic_setup,
 790           (void*)"defer lock" },
 791         { "bufferevent_connect_unlocked_cbs", test_bufferevent_connect,
 792           TT_FORK|TT_NEED_BASE|TT_NEED_THREADS, &basic_setup,
 793           (void*)"lock defer unlocked" },
 794         { "bufferevent_connect_fail", test_bufferevent_connect_fail,
 795           TT_FORK|TT_NEED_BASE, &basic_setup, NULL },
 796         { "bufferevent_timeout", test_bufferevent_timeouts,
 797           TT_FORK|TT_NEED_BASE|TT_NEED_SOCKETPAIR, &basic_setup, (void*)"" },
 798         { "bufferevent_timeout_pair", test_bufferevent_timeouts,
 799           TT_FORK|TT_NEED_BASE, &basic_setup, (void*)"pair" },
 800         { "bufferevent_timeout_filter", test_bufferevent_timeouts,
 801           TT_FORK|TT_NEED_BASE, &basic_setup, (void*)"filter" },
 802         { "bufferevent_timeout_filter_pair", test_bufferevent_timeouts,
 803           TT_FORK|TT_NEED_BASE, &basic_setup, (void*)"filter pair" },
 804 #ifdef _EVENT_HAVE_LIBZ
 805         LEGACY(bufferevent_zlib, TT_ISOLATED),
 806 #else
 807         { "bufferevent_zlib", NULL, TT_SKIP, NULL, NULL },
 808 #endif
 809
 810         END_OF_TESTCASES,
 811 };
 812
 813 struct testcase_t bufferevent_iocp_testcases[] = {
 814
 815         LEGACY(bufferevent, TT_ISOLATED|TT_ENABLE_IOCP),
 816         LEGACY(bufferevent_watermarks, TT_ISOLATED|TT_ENABLE_IOCP),
 817         LEGACY(bufferevent_filters, TT_ISOLATED|TT_ENABLE_IOCP),
 818         { "bufferevent_connect", test_bufferevent_connect,
 819           TT_FORK|TT_NEED_BASE|TT_ENABLE_IOCP, &basic_setup, (void*)"" },
 820         { "bufferevent_connect_defer", test_bufferevent_connect,
 821           TT_FORK|TT_NEED_BASE|TT_ENABLE_IOCP, &basic_setup, (void*)"defer" },
 822         { "bufferevent_connect_lock", test_bufferevent_connect,
 823           TT_FORK|TT_NEED_BASE|TT_NEED_THREADS|TT_ENABLE_IOCP, &basic_setup,
 824           (void*)"lock" },
 825         { "bufferevent_connect_lock_defer", test_bufferevent_connect,
 826           TT_FORK|TT_NEED_BASE|TT_NEED_THREADS|TT_ENABLE_IOCP, &basic_setup,
 827           (void*)"defer lock" },
 828         { "bufferevent_connect_fail", test_bufferevent_connect_fail,
 829           TT_FORK|TT_NEED_BASE|TT_ENABLE_IOCP, &basic_setup, NULL },
 830         { "bufferevent_connect_nonblocking", test_bufferevent_connect,
 831           TT_FORK|TT_NEED_BASE|TT_ENABLE_IOCP, &basic_setup,
 832           (void*)"unset_connectex" },
 833
 834         END_OF_TESTCASES,
 835 };