tests/reconnect.at

   1 AT_BANNER([reconnect library])
   2
   3 ######################################################################
   4 AT_SETUP([nothing happens if not enabled])
   5 AT_KEYWORDS([reconnect])
   6 AT_DATA([input], [run
   7 timeout
   8 ])
   9 AT_CHECK([test-reconnect < input], [0],
  10   [### t=1000 ###
  11 run
  12 timeout
  13   no timeout
  14 ])
  15 AT_CLEANUP
  16
  17 ######################################################################
  18 AT_SETUP([quick connect, idle disconnect])
  19 AT_KEYWORDS([reconnect])
  20 AT_DATA([input], [enable
  21
  22 # Connection succeeds.
  23 run
  24 connected
  25
  26 # Send inactivity probe.
  27 timeout
  28 run
  29
  30 # Idle timeout kills connection.
  31 timeout
  32 run
  33 disconnected
  34 ])
  35 AT_CHECK([test-reconnect < input], [0],
  36   [### t=1000 ###
  37 enable
  38   in BACKOFF for 0 ms (0 ms backoff)
  39
  40 # Connection succeeds.
  41 run
  42   should connect
  43 connected
  44   in ACTIVE for 0 ms (0 ms backoff)
  45   1 successful connections out of 1 attempts, seqno 1
  46   connected (0 ms), total 0 ms connected
  47
  48 # Send inactivity probe.
  49 timeout
  50   advance 5000 ms
  51
  52 ### t=6000 ###
  53   in ACTIVE for 5000 ms (0 ms backoff)
  54   connected (5000 ms), total 5000 ms connected
  55 run
  56   should send probe
  57   in IDLE for 0 ms (0 ms backoff)
  58
  59 # Idle timeout kills connection.
  60 timeout
  61   advance 5000 ms
  62
  63 ### t=11000 ###
  64   in IDLE for 5000 ms (0 ms backoff)
  65   connected (10000 ms), total 10000 ms connected
  66 run
  67   should disconnect
  68 disconnected
  69   in BACKOFF for 0 ms (1000 ms backoff)
  70   1 successful connections out of 1 attempts, seqno 2
  71   not connected (0 ms), total 10000 ms connected
  72 ])
  73 AT_CLEANUP
  74
  75 ######################################################################
  76 AT_SETUP([slow connect, idle disconnect])
  77 AT_KEYWORDS([reconnect])
  78 AT_DATA([input], [enable
  79
  80 # Start connecting.
  81 run
  82 connecting
  83
  84 # Connect after 500 ms.
  85 advance 500
  86 run
  87 connected
  88
  89 # Send inactivity probe.
  90 timeout
  91 run
  92
  93 # Idle timeout kills connection.
  94 timeout
  95 run
  96 disconnected
  97 ])
  98 AT_CHECK([test-reconnect < input], [0],
  99   [### t=1000 ###
 100 enable
 101   in BACKOFF for 0 ms (0 ms backoff)
 102
 103 # Start connecting.
 104 run
 105   should connect
 106 connecting
 107   in CONNECT_IN_PROGRESS for 0 ms (0 ms backoff)
 108
 109 # Connect after 500 ms.
 110 advance 500
 111
 112 ### t=1500 ###
 113   in CONNECT_IN_PROGRESS for 500 ms (0 ms backoff)
 114 run
 115 connected
 116   in ACTIVE for 0 ms (0 ms backoff)
 117   created 1000, last received 1000, last connected 1500
 118   1 successful connections out of 1 attempts, seqno 1
 119   connected (0 ms), total 0 ms connected
 120
 121 # Send inactivity probe.
 122 timeout
 123   advance 5000 ms
 124
 125 ### t=6500 ###
 126   in ACTIVE for 5000 ms (0 ms backoff)
 127   connected (5000 ms), total 5000 ms connected
 128 run
 129   should send probe
 130   in IDLE for 0 ms (0 ms backoff)
 131
 132 # Idle timeout kills connection.
 133 timeout
 134   advance 5000 ms
 135
 136 ### t=11500 ###
 137   in IDLE for 5000 ms (0 ms backoff)
 138   connected (10000 ms), total 10000 ms connected
 139 run
 140   should disconnect
 141 disconnected
 142   in BACKOFF for 0 ms (1000 ms backoff)
 143   1 successful connections out of 1 attempts, seqno 2
 144   not connected (0 ms), total 10000 ms connected
 145 ])
 146 AT_CLEANUP
 147
 148 ######################################################################
 149 AT_SETUP([connect backs off])
 150 AT_KEYWORDS([reconnect])
 151 AT_DATA([input], [enable
 152
 153 # First connection attempt fails after 1000 ms.
 154 run
 155 connecting
 156 run
 157 timeout
 158 run
 159 connect-failed
 160
 161 # Back off for 1000 ms.
 162 timeout
 163 run
 164
 165 # Second connection attempt fails after 1000 ms.
 166 connecting
 167 timeout
 168 run
 169 connect-failed
 170
 171 # Back off for 2000 ms.
 172 timeout
 173 run
 174
 175 # Third connection attempt fails after 2000 ms.
 176 connecting
 177 timeout
 178 run
 179 connect-failed
 180
 181 # Back off for 4000 ms.
 182 timeout
 183 run
 184
 185 # Third connection attempt fails after 4000 ms.
 186 connecting
 187 timeout
 188 run
 189 connect-failed
 190
 191 # Back off for 8000 ms.
 192 timeout
 193 run
 194
 195 # Third connection attempt fails after 8000 ms.
 196 connecting
 197 timeout
 198 run
 199 connect-failed
 200
 201 # Back off for 8000 ms.
 202 timeout
 203 run
 204
 205 # Fourth connection attempt fails after 8000 ms.
 206 connecting
 207 timeout
 208 run
 209 connect-failed
 210 ])
 211 AT_CHECK([test-reconnect < input], [0],
 212   [### t=1000 ###
 213 enable
 214   in BACKOFF for 0 ms (0 ms backoff)
 215
 216 # First connection attempt fails after 1000 ms.
 217 run
 218   should connect
 219 connecting
 220   in CONNECT_IN_PROGRESS for 0 ms (0 ms backoff)
 221 run
 222 timeout
 223   advance 1000 ms
 224
 225 ### t=2000 ###
 226   in CONNECT_IN_PROGRESS for 1000 ms (0 ms backoff)
 227 run
 228   should disconnect
 229 connect-failed
 230   in BACKOFF for 0 ms (1000 ms backoff)
 231   0 successful connections out of 1 attempts, seqno 0
 232
 233 # Back off for 1000 ms.
 234 timeout
 235   advance 1000 ms
 236
 237 ### t=3000 ###
 238   in BACKOFF for 1000 ms (1000 ms backoff)
 239 run
 240   should connect
 241
 242 # Second connection attempt fails after 1000 ms.
 243 connecting
 244   in CONNECT_IN_PROGRESS for 0 ms (1000 ms backoff)
 245 timeout
 246   advance 1000 ms
 247
 248 ### t=4000 ###
 249   in CONNECT_IN_PROGRESS for 1000 ms (1000 ms backoff)
 250 run
 251   should disconnect
 252 connect-failed
 253   in BACKOFF for 0 ms (2000 ms backoff)
 254   0 successful connections out of 2 attempts, seqno 0
 255
 256 # Back off for 2000 ms.
 257 timeout
 258   advance 2000 ms
 259
 260 ### t=6000 ###
 261   in BACKOFF for 2000 ms (2000 ms backoff)
 262 run
 263   should connect
 264
 265 # Third connection attempt fails after 2000 ms.
 266 connecting
 267   in CONNECT_IN_PROGRESS for 0 ms (2000 ms backoff)
 268 timeout
 269   advance 2000 ms
 270
 271 ### t=8000 ###
 272   in CONNECT_IN_PROGRESS for 2000 ms (2000 ms backoff)
 273 run
 274   should disconnect
 275 connect-failed
 276   in BACKOFF for 0 ms (4000 ms backoff)
 277   0 successful connections out of 3 attempts, seqno 0
 278
 279 # Back off for 4000 ms.
 280 timeout
 281   advance 4000 ms
 282
 283 ### t=12000 ###
 284   in BACKOFF for 4000 ms (4000 ms backoff)
 285 run
 286   should connect
 287
 288 # Third connection attempt fails after 4000 ms.
 289 connecting
 290   in CONNECT_IN_PROGRESS for 0 ms (4000 ms backoff)
 291 timeout
 292   advance 4000 ms
 293
 294 ### t=16000 ###
 295   in CONNECT_IN_PROGRESS for 4000 ms (4000 ms backoff)
 296 run
 297   should disconnect
 298 connect-failed
 299   in BACKOFF for 0 ms (8000 ms backoff)
 300   0 successful connections out of 4 attempts, seqno 0
 301
 302 # Back off for 8000 ms.
 303 timeout
 304   advance 8000 ms
 305
 306 ### t=24000 ###
 307   in BACKOFF for 8000 ms (8000 ms backoff)
 308 run
 309   should connect
 310
 311 # Third connection attempt fails after 8000 ms.
 312 connecting
 313   in CONNECT_IN_PROGRESS for 0 ms (8000 ms backoff)
 314 timeout
 315   advance 8000 ms
 316
 317 ### t=32000 ###
 318   in CONNECT_IN_PROGRESS for 8000 ms (8000 ms backoff)
 319 run
 320   should disconnect
 321 connect-failed
 322   in BACKOFF for 0 ms (8000 ms backoff)
 323   0 successful connections out of 5 attempts, seqno 0
 324
 325 # Back off for 8000 ms.
 326 timeout
 327   advance 8000 ms
 328
 329 ### t=40000 ###
 330   in BACKOFF for 8000 ms (8000 ms backoff)
 331 run
 332   should connect
 333
 334 # Fourth connection attempt fails after 8000 ms.
 335 connecting
 336   in CONNECT_IN_PROGRESS for 0 ms (8000 ms backoff)
 337 timeout
 338   advance 8000 ms
 339
 340 ### t=48000 ###
 341   in CONNECT_IN_PROGRESS for 8000 ms (8000 ms backoff)
 342 run
 343   should disconnect
 344 connect-failed
 345   in BACKOFF for 0 ms (8000 ms backoff)
 346   0 successful connections out of 6 attempts, seqno 0
 347 ])
 348 AT_CLEANUP
 349
 350 ######################################################################
 351 AT_SETUP([connections with no data preserve backoff])
 352 AT_KEYWORDS([reconnect])
 353 AT_DATA([input], [enable
 354
 355 # First connect, then idle timeout kills connection.
 356 run
 357 connected
 358 timeout
 359 run
 360 timeout
 361 run
 362 disconnected
 363
 364 # Back off for 1000 ms.
 365 timeout
 366 run
 367
 368 # Second connect, then idle timeout kills connection.
 369 run
 370 connected
 371 timeout
 372 run
 373 timeout
 374 run
 375 disconnected
 376
 377 # Back off for 2000 ms.
 378 timeout
 379 run
 380
 381 # Third connect, then idle timeout kills connection.
 382 run
 383 connected
 384 timeout
 385 run
 386 timeout
 387 run
 388 disconnected
 389
 390 # Back off for 4000 ms.
 391 timeout
 392 ], [### t=1000 ###
 393 enable
 394   in BACKOFF for 0 ms (0 ms backoff)
 395
 396 # First connect, then idle timeout kills connection.
 397 run
 398   should connect
 399 connected
 400   in ACTIVE for 0 ms (0 ms backoff)
 401   1 successful connections out of 1 attempts, seqno 1
 402   connected (0 ms), total 0 ms connected
 403 timeout
 404   advance 5000 ms
 405
 406 ### t=6000 ###
 407   in ACTIVE for 5000 ms (0 ms backoff)
 408   connected (5000 ms), total 5000 ms connected
 409 run
 410   should send probe
 411   in IDLE for 0 ms (0 ms backoff)
 412 timeout
 413   advance 5000 ms
 414
 415 ### t=11000 ###
 416   in IDLE for 5000 ms (0 ms backoff)
 417   connected (10000 ms), total 10000 ms connected
 418 run
 419   should disconnect
 420 disconnected
 421   in BACKOFF for 0 ms (1000 ms backoff)
 422   1 successful connections out of 1 attempts, seqno 2
 423   not connected (0 ms), total 10000 ms connected
 424
 425 # Back off for 1000 ms.
 426 timeout
 427   advance 1000 ms
 428
 429 ### t=12000 ###
 430   in BACKOFF for 1000 ms (1000 ms backoff)
 431 run
 432   should connect
 433
 434 # Second connect, then idle timeout kills connection.
 435 run
 436   should connect
 437 connected
 438   in ACTIVE for 0 ms (1000 ms backoff)
 439   created 1000, last received 1000, last connected 12000
 440   2 successful connections out of 2 attempts, seqno 3
 441   connected (0 ms), total 10000 ms connected
 442 timeout
 443   advance 5000 ms
 444
 445 ### t=17000 ###
 446   in ACTIVE for 5000 ms (1000 ms backoff)
 447   connected (5000 ms), total 15000 ms connected
 448 run
 449   should send probe
 450   in IDLE for 0 ms (1000 ms backoff)
 451 timeout
 452   advance 5000 ms
 453
 454 ### t=22000 ###
 455   in IDLE for 5000 ms (1000 ms backoff)
 456   connected (10000 ms), total 20000 ms connected
 457 run
 458   should disconnect
 459 disconnected
 460   in BACKOFF for 0 ms (2000 ms backoff)
 461   2 successful connections out of 2 attempts, seqno 4
 462   not connected (0 ms), total 20000 ms connected
 463
 464 # Back off for 2000 ms.
 465 timeout
 466   advance 2000 ms
 467
 468 ### t=24000 ###
 469   in BACKOFF for 2000 ms (2000 ms backoff)
 470 run
 471   should connect
 472
 473 # Third connect, then idle timeout kills connection.
 474 run
 475   should connect
 476 connected
 477   in ACTIVE for 0 ms (2000 ms backoff)
 478   created 1000, last received 1000, last connected 24000
 479   3 successful connections out of 3 attempts, seqno 5
 480   connected (0 ms), total 20000 ms connected
 481 timeout
 482   advance 5000 ms
 483
 484 ### t=29000 ###
 485   in ACTIVE for 5000 ms (2000 ms backoff)
 486   connected (5000 ms), total 25000 ms connected
 487 run
 488   should send probe
 489   in IDLE for 0 ms (2000 ms backoff)
 490 timeout
 491   advance 5000 ms
 492
 493 ### t=34000 ###
 494   in IDLE for 5000 ms (2000 ms backoff)
 495   connected (10000 ms), total 30000 ms connected
 496 run
 497   should disconnect
 498 disconnected
 499   in BACKOFF for 0 ms (4000 ms backoff)
 500   3 successful connections out of 3 attempts, seqno 6
 501   not connected (0 ms), total 30000 ms connected
 502
 503 # Back off for 4000 ms.
 504 timeout
 505   advance 4000 ms
 506
 507 ### t=38000 ###
 508   in BACKOFF for 4000 ms (4000 ms backoff)
 509
 510 ])
 511 AT_CLEANUP
 512
 513 ######################################################################
 514 AT_SETUP([brief connection preserves backoff])
 515 AT_KEYWORDS([reconnect])
 516 AT_DATA([input], [enable
 517
 518 # First connection attempt fails after 1000 ms.
 519 run
 520 connecting
 521 run
 522 timeout
 523 run
 524 connect-failed
 525
 526 # Back off for 1000 ms.
 527 timeout
 528 run
 529
 530 # Second connection attempt fails after 1000 ms.
 531 connecting
 532 timeout
 533 run
 534 connect-failed
 535
 536 # Back off for 2000 ms.
 537 timeout
 538 run
 539
 540 # Third connection attempt succeeds after 500 ms.
 541 connecting
 542 advance 500
 543 run
 544 connected
 545
 546 # Connection drops after another 250 ms.
 547 advance 250
 548 disconnected
 549 run
 550
 551 # Back off for 4000 ms.
 552 timeout
 553 run
 554 ])
 555 AT_CHECK([test-reconnect < input], [0],
 556   [### t=1000 ###
 557 enable
 558   in BACKOFF for 0 ms (0 ms backoff)
 559
 560 # First connection attempt fails after 1000 ms.
 561 run
 562   should connect
 563 connecting
 564   in CONNECT_IN_PROGRESS for 0 ms (0 ms backoff)
 565 run
 566 timeout
 567   advance 1000 ms
 568
 569 ### t=2000 ###
 570   in CONNECT_IN_PROGRESS for 1000 ms (0 ms backoff)
 571 run
 572   should disconnect
 573 connect-failed
 574   in BACKOFF for 0 ms (1000 ms backoff)
 575   0 successful connections out of 1 attempts, seqno 0
 576
 577 # Back off for 1000 ms.
 578 timeout
 579   advance 1000 ms
 580
 581 ### t=3000 ###
 582   in BACKOFF for 1000 ms (1000 ms backoff)
 583 run
 584   should connect
 585
 586 # Second connection attempt fails after 1000 ms.
 587 connecting
 588   in CONNECT_IN_PROGRESS for 0 ms (1000 ms backoff)
 589 timeout
 590   advance 1000 ms
 591
 592 ### t=4000 ###
 593   in CONNECT_IN_PROGRESS for 1000 ms (1000 ms backoff)
 594 run
 595   should disconnect
 596 connect-failed
 597   in BACKOFF for 0 ms (2000 ms backoff)
 598   0 successful connections out of 2 attempts, seqno 0
 599
 600 # Back off for 2000 ms.
 601 timeout
 602   advance 2000 ms
 603
 604 ### t=6000 ###
 605   in BACKOFF for 2000 ms (2000 ms backoff)
 606 run
 607   should connect
 608
 609 # Third connection attempt succeeds after 500 ms.
 610 connecting
 611   in CONNECT_IN_PROGRESS for 0 ms (2000 ms backoff)
 612 advance 500
 613
 614 ### t=6500 ###
 615   in CONNECT_IN_PROGRESS for 500 ms (2000 ms backoff)
 616 run
 617 connected
 618   in ACTIVE for 0 ms (2000 ms backoff)
 619   created 1000, last received 1000, last connected 6500
 620   1 successful connections out of 3 attempts, seqno 1
 621   connected (0 ms), total 0 ms connected
 622
 623 # Connection drops after another 250 ms.
 624 advance 250
 625
 626 ### t=6750 ###
 627   in ACTIVE for 250 ms (2000 ms backoff)
 628   connected (250 ms), total 250 ms connected
 629 disconnected
 630   in BACKOFF for 0 ms (4000 ms backoff)
 631   1 successful connections out of 3 attempts, seqno 2
 632   not connected (0 ms), total 250 ms connected
 633 run
 634
 635 # Back off for 4000 ms.
 636 timeout
 637   advance 4000 ms
 638
 639 ### t=10750 ###
 640   in BACKOFF for 4000 ms (4000 ms backoff)
 641 run
 642   should connect
 643 ])
 644 AT_CLEANUP
 645
 646 ######################################################################
 647 AT_SETUP([brief connection with data preserves backoff])
 648 AT_KEYWORDS([reconnect])
 649 AT_DATA([input], [enable
 650
 651 # First connection attempt fails after 1000 ms.
 652 run
 653 connecting
 654 run
 655 timeout
 656 run
 657 connect-failed
 658
 659 # Back off for 1000 ms.
 660 timeout
 661 run
 662
 663 # Second connection attempt fails after 1000 ms.
 664 connecting
 665 timeout
 666 run
 667 connect-failed
 668
 669 # Back off for 2000 ms.
 670 timeout
 671 run
 672
 673 # Third connection attempt succeeds after 500 ms.
 674 connecting
 675 advance 500
 676 run
 677 connected
 678
 679 # Connection receives 3 chunks of data spaced 250 ms apart.
 680 advance 250
 681 run
 682 received
 683 advance 250
 684 run
 685 received
 686 advance 250
 687 run
 688 received
 689
 690 # Connection drops.
 691 disconnected
 692 run
 693
 694 # Back off for 4000 ms.
 695 timeout
 696 run
 697 ])
 698 AT_CHECK([test-reconnect < input], [0],
 699   [### t=1000 ###
 700 enable
 701   in BACKOFF for 0 ms (0 ms backoff)
 702
 703 # First connection attempt fails after 1000 ms.
 704 run
 705   should connect
 706 connecting
 707   in CONNECT_IN_PROGRESS for 0 ms (0 ms backoff)
 708 run
 709 timeout
 710   advance 1000 ms
 711
 712 ### t=2000 ###
 713   in CONNECT_IN_PROGRESS for 1000 ms (0 ms backoff)
 714 run
 715   should disconnect
 716 connect-failed
 717   in BACKOFF for 0 ms (1000 ms backoff)
 718   0 successful connections out of 1 attempts, seqno 0
 719
 720 # Back off for 1000 ms.
 721 timeout
 722   advance 1000 ms
 723
 724 ### t=3000 ###
 725   in BACKOFF for 1000 ms (1000 ms backoff)
 726 run
 727   should connect
 728
 729 # Second connection attempt fails after 1000 ms.
 730 connecting
 731   in CONNECT_IN_PROGRESS for 0 ms (1000 ms backoff)
 732 timeout
 733   advance 1000 ms
 734
 735 ### t=4000 ###
 736   in CONNECT_IN_PROGRESS for 1000 ms (1000 ms backoff)
 737 run
 738   should disconnect
 739 connect-failed
 740   in BACKOFF for 0 ms (2000 ms backoff)
 741   0 successful connections out of 2 attempts, seqno 0
 742
 743 # Back off for 2000 ms.
 744 timeout
 745   advance 2000 ms
 746
 747 ### t=6000 ###
 748   in BACKOFF for 2000 ms (2000 ms backoff)
 749 run
 750   should connect
 751
 752 # Third connection attempt succeeds after 500 ms.
 753 connecting
 754   in CONNECT_IN_PROGRESS for 0 ms (2000 ms backoff)
 755 advance 500
 756
 757 ### t=6500 ###
 758   in CONNECT_IN_PROGRESS for 500 ms (2000 ms backoff)
 759 run
 760 connected
 761   in ACTIVE for 0 ms (2000 ms backoff)
 762   created 1000, last received 1000, last connected 6500
 763   1 successful connections out of 3 attempts, seqno 1
 764   connected (0 ms), total 0 ms connected
 765
 766 # Connection receives 3 chunks of data spaced 250 ms apart.
 767 advance 250
 768
 769 ### t=6750 ###
 770   in ACTIVE for 250 ms (2000 ms backoff)
 771   connected (250 ms), total 250 ms connected
 772 run
 773 received
 774   created 1000, last received 6750, last connected 6500
 775 advance 250
 776
 777 ### t=7000 ###
 778   in ACTIVE for 500 ms (2000 ms backoff)
 779   connected (500 ms), total 500 ms connected
 780 run
 781 received
 782   created 1000, last received 7000, last connected 6500
 783 advance 250
 784
 785 ### t=7250 ###
 786   in ACTIVE for 750 ms (2000 ms backoff)
 787   connected (750 ms), total 750 ms connected
 788 run
 789 received
 790   created 1000, last received 7250, last connected 6500
 791
 792 # Connection drops.
 793 disconnected
 794   in BACKOFF for 0 ms (4000 ms backoff)
 795   1 successful connections out of 3 attempts, seqno 2
 796   not connected (0 ms), total 750 ms connected
 797 run
 798
 799 # Back off for 4000 ms.
 800 timeout
 801   advance 4000 ms
 802
 803 ### t=11250 ###
 804   in BACKOFF for 4000 ms (4000 ms backoff)
 805 run
 806   should connect
 807 ])
 808 AT_CLEANUP
 809
 810 ######################################################################
 811 AT_SETUP([long connection resets backoff])
 812 AT_KEYWORDS([reconnect])
 813 AT_DATA([input], [enable
 814
 815 # First connection attempt fails after 1000 ms.
 816 run
 817 connecting
 818 run
 819 timeout
 820 run
 821 connect-failed
 822
 823 # Back off for 1000 ms.
 824 timeout
 825 run
 826
 827 # Second connection attempt fails after 1000 ms.
 828 connecting
 829 timeout
 830 run
 831 connect-failed
 832
 833 # Back off for 2000 ms.
 834 timeout
 835 run
 836
 837 # Third connection attempt succeeds after 500 ms.
 838 connecting
 839 advance 500
 840 run
 841 connected
 842
 843 # Connection receives 3 chunks of data spaced 2000 ms apart.
 844 advance 2000
 845 run
 846 received
 847 advance 2000
 848 run
 849 received
 850 advance 2000
 851 run
 852 received
 853
 854 # Connection drops.
 855 disconnected
 856 run
 857
 858 # Back off for 1000 ms.
 859 timeout
 860 run
 861 ])
 862 AT_CHECK([test-reconnect < input], [0],
 863   [### t=1000 ###
 864 enable
 865   in BACKOFF for 0 ms (0 ms backoff)
 866
 867 # First connection attempt fails after 1000 ms.
 868 run
 869   should connect
 870 connecting
 871   in CONNECT_IN_PROGRESS for 0 ms (0 ms backoff)
 872 run
 873 timeout
 874   advance 1000 ms
 875
 876 ### t=2000 ###
 877   in CONNECT_IN_PROGRESS for 1000 ms (0 ms backoff)
 878 run
 879   should disconnect
 880 connect-failed
 881   in BACKOFF for 0 ms (1000 ms backoff)
 882   0 successful connections out of 1 attempts, seqno 0
 883
 884 # Back off for 1000 ms.
 885 timeout
 886   advance 1000 ms
 887
 888 ### t=3000 ###
 889   in BACKOFF for 1000 ms (1000 ms backoff)
 890 run
 891   should connect
 892
 893 # Second connection attempt fails after 1000 ms.
 894 connecting
 895   in CONNECT_IN_PROGRESS for 0 ms (1000 ms backoff)
 896 timeout
 897   advance 1000 ms
 898
 899 ### t=4000 ###
 900   in CONNECT_IN_PROGRESS for 1000 ms (1000 ms backoff)
 901 run
 902   should disconnect
 903 connect-failed
 904   in BACKOFF for 0 ms (2000 ms backoff)
 905   0 successful connections out of 2 attempts, seqno 0
 906
 907 # Back off for 2000 ms.
 908 timeout
 909   advance 2000 ms
 910
 911 ### t=6000 ###
 912   in BACKOFF for 2000 ms (2000 ms backoff)
 913 run
 914   should connect
 915
 916 # Third connection attempt succeeds after 500 ms.
 917 connecting
 918   in CONNECT_IN_PROGRESS for 0 ms (2000 ms backoff)
 919 advance 500
 920
 921 ### t=6500 ###
 922   in CONNECT_IN_PROGRESS for 500 ms (2000 ms backoff)
 923 run
 924 connected
 925   in ACTIVE for 0 ms (2000 ms backoff)
 926   created 1000, last received 1000, last connected 6500
 927   1 successful connections out of 3 attempts, seqno 1
 928   connected (0 ms), total 0 ms connected
 929
 930 # Connection receives 3 chunks of data spaced 2000 ms apart.
 931 advance 2000
 932
 933 ### t=8500 ###
 934   in ACTIVE for 2000 ms (2000 ms backoff)
 935   connected (2000 ms), total 2000 ms connected
 936 run
 937 received
 938   created 1000, last received 8500, last connected 6500
 939 advance 2000
 940
 941 ### t=10500 ###
 942   in ACTIVE for 4000 ms (2000 ms backoff)
 943   connected (4000 ms), total 4000 ms connected
 944 run
 945 received
 946   created 1000, last received 10500, last connected 6500
 947 advance 2000
 948
 949 ### t=12500 ###
 950   in ACTIVE for 6000 ms (2000 ms backoff)
 951   connected (6000 ms), total 6000 ms connected
 952 run
 953 received
 954   created 1000, last received 12500, last connected 6500
 955
 956 # Connection drops.
 957 disconnected
 958   in BACKOFF for 0 ms (1000 ms backoff)
 959   1 successful connections out of 3 attempts, seqno 2
 960   not connected (0 ms), total 6000 ms connected
 961 run
 962
 963 # Back off for 1000 ms.
 964 timeout
 965   advance 1000 ms
 966
 967 ### t=13500 ###
 968   in BACKOFF for 1000 ms (1000 ms backoff)
 969 run
 970   should connect
 971 ])
 972 AT_CLEANUP
 973
 974 ######################################################################
 975 AT_SETUP([connection attempt fails quickly])
 976 AT_KEYWORDS([reconnect])
 977 AT_DATA([input], [enable
 978
 979 # Connection fails quickly.
 980 run
 981 connect-failed ECONNREFUSED
 982
 983 # Back off for 1000 ms.
 984 run
 985 timeout
 986
 987 # Connection fails quickly again.
 988 run
 989 connect-failed ECONNREFUSED
 990
 991 # Back off for 2000 ms.
 992 run
 993 timeout
 994 ])
 995 AT_CHECK([test-reconnect < input], [0],
 996   [### t=1000 ###
 997 enable
 998   in BACKOFF for 0 ms (0 ms backoff)
 999
1000 # Connection fails quickly.
1001 run
1002   should connect
1003 connect-failed ECONNREFUSED
1004   in BACKOFF for 0 ms (1000 ms backoff)
1005   0 successful connections out of 1 attempts, seqno 0
1006
1007 # Back off for 1000 ms.
1008 run
1009 timeout
1010   advance 1000 ms
1011
1012 ### t=2000 ###
1013   in BACKOFF for 1000 ms (1000 ms backoff)
1014
1015 # Connection fails quickly again.
1016 run
1017   should connect
1018 connect-failed ECONNREFUSED
1019   in BACKOFF for 0 ms (2000 ms backoff)
1020   0 successful connections out of 2 attempts, seqno 0
1021
1022 # Back off for 2000 ms.
1023 run
1024 timeout
1025   advance 2000 ms
1026
1027 ### t=4000 ###
1028   in BACKOFF for 2000 ms (2000 ms backoff)
1029 ])
1030 AT_CLEANUP
1031
1032 ######################################################################
1033 AT_SETUP([max-tries of 1 honored])
1034 AT_KEYWORDS([reconnect])
1035 AT_DATA([input], [set-max-tries 1
1036 enable
1037
1038 # Connection succeeds.
1039 run
1040 connected
1041
1042 # Send inactivity probe.
1043 timeout
1044 run
1045
1046 # Idle timeout kills connection.
1047 timeout
1048 run
1049 disconnected
1050 ])
1051 AT_CHECK([test-reconnect < input], [0],
1052   [### t=1000 ###
1053 set-max-tries 1
1054   1 tries left
1055 enable
1056   in BACKOFF for 0 ms (0 ms backoff)
1057   0 tries left
1058
1059 # Connection succeeds.
1060 run
1061   should connect
1062 connected
1063   in ACTIVE for 0 ms (0 ms backoff)
1064   1 successful connections out of 1 attempts, seqno 1
1065   connected (0 ms), total 0 ms connected
1066
1067 # Send inactivity probe.
1068 timeout
1069   advance 5000 ms
1070
1071 ### t=6000 ###
1072   in ACTIVE for 5000 ms (0 ms backoff)
1073   connected (5000 ms), total 5000 ms connected
1074 run
1075   should send probe
1076   in IDLE for 0 ms (0 ms backoff)
1077
1078 # Idle timeout kills connection.
1079 timeout
1080   advance 5000 ms
1081
1082 ### t=11000 ###
1083   in IDLE for 5000 ms (0 ms backoff)
1084   connected (10000 ms), total 10000 ms connected
1085 run
1086   should disconnect
1087 disconnected
1088   in VOID for 0 ms (1000 ms backoff)
1089   1 successful connections out of 1 attempts, seqno 2
1090   not connected (0 ms), total 10000 ms connected
1091 ])
1092 AT_CLEANUP
1093
1094 ######################################################################
1095 AT_SETUP([max-tries of 0 honored])
1096 AT_KEYWORDS([reconnect])
1097 AT_DATA([input], [set-max-tries 0
1098 enable
1099 run
1100 timeout
1101 ])
1102 AT_CHECK([test-reconnect < input], [0],
1103   [### t=1000 ###
1104 set-max-tries 0
1105   0 tries left
1106 enable
1107 run
1108 timeout
1109   no timeout
1110 ])
1111 AT_CLEANUP