| 1 | /* |
| 2 | Copyright (C) 2004 by Intra2net AG |
| 3 | |
| 4 | The software in this package is distributed under the GNU General |
| 5 | Public License version 2 (with a special exception described below). |
| 6 | |
| 7 | A copy of GNU General Public License (GPL) is included in this distribution, |
| 8 | in the file COPYING.GPL. |
| 9 | |
| 10 | As a special exception, if other files instantiate templates or use macros |
| 11 | or inline functions from this file, or you compile this file and link it |
| 12 | with other works to produce a work based on this file, this file |
| 13 | does not by itself cause the resulting work to be covered |
| 14 | by the GNU General Public License. |
| 15 | |
| 16 | However the source code for this file must still be made available |
| 17 | in accordance with section (3) of the GNU General Public License. |
| 18 | |
| 19 | This exception does not invalidate any other reasons why a work based |
| 20 | on this file might be covered by the GNU General Public License. |
| 21 | */ |
| 22 | #include <sys/types.h> |
| 23 | #include <unistd.h> |
| 24 | #include <errno.h> |
| 25 | #include <signal.h> |
| 26 | #include <stdio.h> |
| 27 | #include <time.h> |
| 28 | |
| 29 | #include <iostream> |
| 30 | #include <string> |
| 31 | #include <sstream> |
| 32 | #include <stdexcept> |
| 33 | |
| 34 | #include <cppunit/extensions/TestFactoryRegistry.h> |
| 35 | #include <cppunit/ui/text/TestRunner.h> |
| 36 | #include <cppunit/extensions/HelperMacros.h> |
| 37 | |
| 38 | #include <socket_client.hxx> |
| 39 | #include <socket_server.hxx> |
| 40 | |
| 41 | #ifdef HAVE_CONFIG_H |
| 42 | #include <config.h> |
| 43 | #endif |
| 44 | |
| 45 | using namespace std; |
| 46 | using namespace libt2n; |
| 47 | using namespace CppUnit; |
| 48 | |
| 49 | // this is an evil hack to get access to real_write, don't ever do this in an app!!! |
| 50 | class real_write_connection: public socket_server_connection |
| 51 | { |
| 52 | public: |
| 53 | void real_write(const std::string& data) |
| 54 | { socket_write(data); } |
| 55 | }; |
| 56 | |
| 57 | class test_reconnect : public TestFixture |
| 58 | { |
| 59 | CPPUNIT_TEST_SUITE(test_reconnect); |
| 60 | |
| 61 | CPPUNIT_TEST(simple_reconnect); |
| 62 | CPPUNIT_TEST(reconnect_with_close); |
| 63 | CPPUNIT_TEST(reconnect_buffer_complete); |
| 64 | CPPUNIT_TEST(reconnect_buffer_several_complete); |
| 65 | CPPUNIT_TEST(reconnect_buffer_no_incomplete1); |
| 66 | CPPUNIT_TEST(reconnect_buffer_no_incomplete2); |
| 67 | |
| 68 | CPPUNIT_TEST_SUITE_END(); |
| 69 | |
| 70 | pid_t child_pid; |
| 71 | |
| 72 | public: |
| 73 | |
| 74 | void setUp() |
| 75 | { } |
| 76 | |
| 77 | void tearDown() |
| 78 | { |
| 79 | // make sure the server-child is dead before the next test runs |
| 80 | kill(child_pid,SIGKILL); |
| 81 | sleep(1); |
| 82 | } |
| 83 | |
| 84 | void send_raw_socket(string hello_string, socket_server* ss, int conn_id) |
| 85 | { |
| 86 | socket_server_connection *ssc=dynamic_cast<socket_server_connection*>(ss->get_connection(conn_id)); |
| 87 | |
| 88 | // this is an evil hack to get access to real_write, don't ever do this in an app!!! |
| 89 | real_write_connection *rwc=(real_write_connection*)ssc; |
| 90 | rwc->real_write(hello_string); |
| 91 | } |
| 92 | |
| 93 | void simple_reconnect() |
| 94 | { |
| 95 | switch(child_pid=fork()) |
| 96 | { |
| 97 | case -1: |
| 98 | { |
| 99 | CPPUNIT_FAIL("fork error"); |
| 100 | break; |
| 101 | } |
| 102 | case 0: |
| 103 | // child |
| 104 | { |
| 105 | try |
| 106 | { |
| 107 | socket_server ss("./socket"); |
| 108 | |
| 109 | time_t t0 = time(NULL); |
| 110 | |
| 111 | // max 10 sec |
| 112 | while (time(NULL) < t0 + 10 ) |
| 113 | { |
| 114 | ss.fill_buffer(1000000); |
| 115 | |
| 116 | string data; |
| 117 | unsigned int cid; |
| 118 | |
| 119 | if(ss.get_packet(data,cid)) |
| 120 | { |
| 121 | server_connection* con=ss.get_connection(cid); |
| 122 | |
| 123 | if (data=="QUIT") |
| 124 | break; |
| 125 | |
| 126 | if (data=="x") |
| 127 | con->write(string().insert(0,100,'X')); |
| 128 | else |
| 129 | con->write(string().insert(0,100,'Y')); |
| 130 | } |
| 131 | } |
| 132 | } catch(...) |
| 133 | { |
| 134 | std::cerr << "exception in child. ignoring\n"; |
| 135 | } |
| 136 | |
| 137 | // don't call atexit and stuff |
| 138 | _exit(0); |
| 139 | } |
| 140 | |
| 141 | default: |
| 142 | // parent |
| 143 | { |
| 144 | // don't kill us on broken pipe |
| 145 | signal(SIGPIPE, SIG_IGN); |
| 146 | |
| 147 | // wait till server is up |
| 148 | sleep(1); |
| 149 | socket_client_connection sc("./socket"); |
| 150 | |
| 151 | sc.write("abc"); |
| 152 | |
| 153 | string data; |
| 154 | |
| 155 | while (!sc.get_packet(data)) |
| 156 | sc.fill_buffer(1000000); |
| 157 | |
| 158 | sc.reconnect(); |
| 159 | |
| 160 | sc.write("x"); |
| 161 | |
| 162 | while (!sc.get_packet(data)) |
| 163 | sc.fill_buffer(1000000); |
| 164 | |
| 165 | CPPUNIT_ASSERT_EQUAL(string().insert(0,100,'X'),data); |
| 166 | } |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | void reconnect_with_close() |
| 171 | { |
| 172 | switch(child_pid=fork()) |
| 173 | { |
| 174 | case -1: |
| 175 | { |
| 176 | CPPUNIT_FAIL("fork error"); |
| 177 | break; |
| 178 | } |
| 179 | case 0: |
| 180 | // child |
| 181 | { |
| 182 | try |
| 183 | { |
| 184 | socket_server ss("./socket"); |
| 185 | |
| 186 | time_t t0 = time(NULL); |
| 187 | |
| 188 | // max 10 sec |
| 189 | while (time(NULL) < t0 + 10 ) |
| 190 | { |
| 191 | ss.fill_buffer(1000000); |
| 192 | |
| 193 | string data; |
| 194 | unsigned int cid; |
| 195 | |
| 196 | if(ss.get_packet(data,cid)) |
| 197 | { |
| 198 | server_connection* con=ss.get_connection(cid); |
| 199 | |
| 200 | if (data=="QUIT") |
| 201 | break; |
| 202 | |
| 203 | if (data=="x") |
| 204 | con->write(string().insert(0,100,'X')); |
| 205 | else |
| 206 | con->write(string().insert(0,100,'Y')); |
| 207 | } |
| 208 | } |
| 209 | } catch(...) |
| 210 | { |
| 211 | std::cerr << "exception in child. ignoring\n"; |
| 212 | } |
| 213 | |
| 214 | // don't call atexit and stuff |
| 215 | _exit(0); |
| 216 | } |
| 217 | |
| 218 | default: |
| 219 | // parent |
| 220 | { |
| 221 | // don't kill us on broken pipe |
| 222 | signal(SIGPIPE, SIG_IGN); |
| 223 | |
| 224 | // wait till server is up |
| 225 | sleep(1); |
| 226 | socket_client_connection sc("./socket"); |
| 227 | |
| 228 | sc.write("abc"); |
| 229 | |
| 230 | string data; |
| 231 | |
| 232 | while (!sc.get_packet(data)) |
| 233 | sc.fill_buffer(1000000); |
| 234 | |
| 235 | sc.close(); |
| 236 | |
| 237 | // empty buffer |
| 238 | sc.get_packet(data); |
| 239 | |
| 240 | sc.reconnect(); |
| 241 | |
| 242 | sc.write("x"); |
| 243 | |
| 244 | while (!sc.get_packet(data)) |
| 245 | sc.fill_buffer(1000000); |
| 246 | |
| 247 | CPPUNIT_ASSERT_EQUAL(string().insert(0,100,'X'),data); |
| 248 | } |
| 249 | } |
| 250 | } |
| 251 | |
| 252 | void reconnect_buffer_complete() |
| 253 | { |
| 254 | switch(child_pid=fork()) |
| 255 | { |
| 256 | case -1: |
| 257 | { |
| 258 | CPPUNIT_FAIL("fork error"); |
| 259 | break; |
| 260 | } |
| 261 | case 0: |
| 262 | // child |
| 263 | { |
| 264 | try |
| 265 | { |
| 266 | socket_server ss("./socket"); |
| 267 | |
| 268 | time_t t0 = time(NULL); |
| 269 | |
| 270 | // max 10 sec |
| 271 | while (time(NULL) < t0 + 10 ) |
| 272 | { |
| 273 | ss.fill_buffer(1000000); |
| 274 | |
| 275 | string data; |
| 276 | unsigned int cid; |
| 277 | |
| 278 | if(ss.get_packet(data,cid)) |
| 279 | { |
| 280 | server_connection* con=ss.get_connection(cid); |
| 281 | |
| 282 | if (data=="QUIT") |
| 283 | break; |
| 284 | |
| 285 | if (data=="x") |
| 286 | con->write(string().insert(0,100,'X')); |
| 287 | } |
| 288 | } |
| 289 | } catch(...) |
| 290 | { |
| 291 | std::cerr << "exception in child. ignoring\n"; |
| 292 | } |
| 293 | |
| 294 | // don't call atexit and stuff |
| 295 | _exit(0); |
| 296 | } |
| 297 | |
| 298 | default: |
| 299 | // parent |
| 300 | { |
| 301 | // don't kill us on broken pipe |
| 302 | signal(SIGPIPE, SIG_IGN); |
| 303 | |
| 304 | // wait till server is up |
| 305 | sleep(1); |
| 306 | socket_client_connection sc("./socket"); |
| 307 | |
| 308 | sc.write("x"); |
| 309 | |
| 310 | string data; |
| 311 | |
| 312 | while (!sc.packet_available()) |
| 313 | sc.fill_buffer(1000000); |
| 314 | |
| 315 | sc.reconnect(); |
| 316 | |
| 317 | CPPUNIT_ASSERT_EQUAL_MESSAGE("packet not there",true,sc.get_packet(data)); |
| 318 | |
| 319 | CPPUNIT_ASSERT_EQUAL_MESSAGE("data incorrect",string().insert(0,100,'X'),data); |
| 320 | } |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | void reconnect_buffer_several_complete() |
| 325 | { |
| 326 | const int packets=3; |
| 327 | |
| 328 | switch(child_pid=fork()) |
| 329 | { |
| 330 | case -1: |
| 331 | { |
| 332 | CPPUNIT_FAIL("fork error"); |
| 333 | break; |
| 334 | } |
| 335 | case 0: |
| 336 | // child |
| 337 | { |
| 338 | try |
| 339 | { |
| 340 | socket_server ss("./socket"); |
| 341 | |
| 342 | time_t t0 = time(NULL); |
| 343 | |
| 344 | // max 10 sec |
| 345 | while (time(NULL) < t0 + 10 ) |
| 346 | { |
| 347 | ss.fill_buffer(1000000); |
| 348 | |
| 349 | string data; |
| 350 | unsigned int cid; |
| 351 | |
| 352 | if(ss.get_packet(data,cid)) |
| 353 | { |
| 354 | server_connection* con=ss.get_connection(cid); |
| 355 | |
| 356 | if (data=="QUIT") |
| 357 | break; |
| 358 | |
| 359 | if (data=="x") |
| 360 | { |
| 361 | for (int i=0; i<packets; i++) |
| 362 | con->write(string().insert(0,100,'X')); |
| 363 | } |
| 364 | } |
| 365 | } |
| 366 | } catch(...) |
| 367 | { |
| 368 | std::cerr << "exception in child. ignoring\n"; |
| 369 | } |
| 370 | |
| 371 | // don't call atexit and stuff |
| 372 | _exit(0); |
| 373 | } |
| 374 | |
| 375 | default: |
| 376 | // parent |
| 377 | { |
| 378 | // don't kill us on broken pipe |
| 379 | signal(SIGPIPE, SIG_IGN); |
| 380 | |
| 381 | // wait till server is up |
| 382 | sleep(1); |
| 383 | socket_client_connection sc("./socket"); |
| 384 | |
| 385 | sc.write("x"); |
| 386 | |
| 387 | // retrieve packets for 3 seconds |
| 388 | time_t t0 = time(NULL); |
| 389 | |
| 390 | // max 3 sec |
| 391 | while (time(NULL) < t0 + 3 ) |
| 392 | sc.fill_buffer(1000000); |
| 393 | |
| 394 | // we now should have packets complete packets in the buffer |
| 395 | |
| 396 | sc.reconnect(); |
| 397 | |
| 398 | // are these packets still there? |
| 399 | |
| 400 | for (int i=0; i < packets; i++) |
| 401 | { |
| 402 | string data; |
| 403 | |
| 404 | ostringstream os; |
| 405 | os << "packet " << i << " not there"; |
| 406 | |
| 407 | CPPUNIT_ASSERT_EQUAL_MESSAGE(os.str(),true,sc.get_packet(data)); |
| 408 | |
| 409 | os.str(""); |
| 410 | os << "packet " << i << " incorrect"; |
| 411 | |
| 412 | CPPUNIT_ASSERT_EQUAL_MESSAGE(os.str(),string().insert(0,100,'X'),data); |
| 413 | } |
| 414 | } |
| 415 | } |
| 416 | } |
| 417 | |
| 418 | void reconnect_buffer_no_incomplete1() |
| 419 | { |
| 420 | switch(child_pid=fork()) |
| 421 | { |
| 422 | case -1: |
| 423 | { |
| 424 | CPPUNIT_FAIL("fork error"); |
| 425 | break; |
| 426 | } |
| 427 | case 0: |
| 428 | // child |
| 429 | { |
| 430 | try |
| 431 | { |
| 432 | socket_server ss("./socket"); |
| 433 | |
| 434 | time_t t0 = time(NULL); |
| 435 | |
| 436 | // max 10 sec |
| 437 | while (time(NULL) < t0 + 10 ) |
| 438 | { |
| 439 | ss.fill_buffer(1000000); |
| 440 | |
| 441 | string data; |
| 442 | unsigned int cid; |
| 443 | |
| 444 | if(ss.get_packet(data,cid)) |
| 445 | { |
| 446 | server_connection* con=ss.get_connection(cid); |
| 447 | |
| 448 | if (data=="QUIT") |
| 449 | break; |
| 450 | |
| 451 | if (data=="x") |
| 452 | { |
| 453 | con->write(string().insert(0,100,'X')); |
| 454 | send_raw_socket("aaaab",&ss,cid); |
| 455 | } |
| 456 | } |
| 457 | } |
| 458 | } catch(...) |
| 459 | { |
| 460 | std::cerr << "exception in child. ignoring\n"; |
| 461 | } |
| 462 | |
| 463 | // don't call atexit and stuff |
| 464 | _exit(0); |
| 465 | } |
| 466 | |
| 467 | default: |
| 468 | // parent |
| 469 | { |
| 470 | // don't kill us on broken pipe |
| 471 | signal(SIGPIPE, SIG_IGN); |
| 472 | |
| 473 | // wait till server is up |
| 474 | sleep(1); |
| 475 | socket_client_connection sc("./socket"); |
| 476 | |
| 477 | sc.write("x"); |
| 478 | |
| 479 | // retrieve packets for 3 seconds |
| 480 | time_t t0 = time(NULL); |
| 481 | |
| 482 | // max 3 sec |
| 483 | while (time(NULL) < t0 + 3 ) |
| 484 | sc.fill_buffer(1000000); |
| 485 | |
| 486 | // we now should have one complete packet and some stuff in the buffer |
| 487 | |
| 488 | string data; |
| 489 | sc.get_packet(data); |
| 490 | |
| 491 | CPPUNIT_ASSERT_EQUAL_MESSAGE("no incomplete packet",true,(sc.peek_packet(data))>0); |
| 492 | |
| 493 | sc.reconnect(); |
| 494 | |
| 495 | CPPUNIT_ASSERT_EQUAL_MESSAGE("incomplete packet not removed",0,(int)sc.peek_packet(data)); |
| 496 | } |
| 497 | } |
| 498 | } |
| 499 | |
| 500 | void reconnect_buffer_no_incomplete2() |
| 501 | { |
| 502 | switch(child_pid=fork()) |
| 503 | { |
| 504 | case -1: |
| 505 | { |
| 506 | CPPUNIT_FAIL("fork error"); |
| 507 | break; |
| 508 | } |
| 509 | case 0: |
| 510 | // child |
| 511 | { |
| 512 | try |
| 513 | { |
| 514 | socket_server ss("./socket"); |
| 515 | |
| 516 | time_t t0 = time(NULL); |
| 517 | |
| 518 | // max 10 sec |
| 519 | while (time(NULL) < t0 + 10 ) |
| 520 | { |
| 521 | ss.fill_buffer(1000000); |
| 522 | |
| 523 | string data; |
| 524 | unsigned int cid; |
| 525 | |
| 526 | if(ss.get_packet(data,cid)) |
| 527 | { |
| 528 | server_connection* con=ss.get_connection(cid); |
| 529 | |
| 530 | if (data=="QUIT") |
| 531 | break; |
| 532 | |
| 533 | if (data=="x") |
| 534 | { |
| 535 | con->write(string().insert(0,100,'X')); |
| 536 | |
| 537 | string blob=string().insert(0,100,'Y'); |
| 538 | |
| 539 | // one byte will be missing... |
| 540 | int size=blob.size()+1; |
| 541 | char sizetransfer[sizeof(int)+1]; |
| 542 | memcpy(sizetransfer,(void*)&size,sizeof(int)); |
| 543 | sizetransfer[sizeof(int)+1]=0; |
| 544 | |
| 545 | string packet=string(sizetransfer)+blob; |
| 546 | |
| 547 | send_raw_socket(packet,&ss,cid); |
| 548 | } |
| 549 | } |
| 550 | } |
| 551 | } catch(...) |
| 552 | { |
| 553 | std::cerr << "exception in child. ignoring\n"; |
| 554 | } |
| 555 | |
| 556 | // don't call atexit and stuff |
| 557 | _exit(0); |
| 558 | } |
| 559 | |
| 560 | default: |
| 561 | // parent |
| 562 | { |
| 563 | // don't kill us on broken pipe |
| 564 | signal(SIGPIPE, SIG_IGN); |
| 565 | |
| 566 | // wait till server is up |
| 567 | sleep(1); |
| 568 | socket_client_connection sc("./socket"); |
| 569 | |
| 570 | sc.write("x"); |
| 571 | |
| 572 | // retrieve packets for 3 seconds |
| 573 | time_t t0 = time(NULL); |
| 574 | |
| 575 | // max 3 sec |
| 576 | while (time(NULL) < t0 + 3 ) |
| 577 | sc.fill_buffer(1000000); |
| 578 | |
| 579 | // we now should have one complete packet and some stuff in the buffer |
| 580 | |
| 581 | sc.reconnect(); |
| 582 | |
| 583 | string data; |
| 584 | |
| 585 | CPPUNIT_ASSERT_EQUAL_MESSAGE("packet not there",true,sc.get_packet(data)); |
| 586 | CPPUNIT_ASSERT_EQUAL_MESSAGE("data incorrect",string().insert(0,100,'X'),data); |
| 587 | |
| 588 | CPPUNIT_ASSERT_EQUAL_MESSAGE("incomplete packet not removed",0,(int)sc.peek_packet(data)); |
| 589 | } |
| 590 | } |
| 591 | } |
| 592 | |
| 593 | }; |
| 594 | |
| 595 | CPPUNIT_TEST_SUITE_REGISTRATION(test_reconnect); |