Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 | 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 1847x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 1928x 1928x 1928x 170x 1234x 1234x 1234x 1234x 1225x 1225x 1225x 1225x 5x 13x 2x 2x 2x 2x 3x 3x 1234x 170x 170x 72202x 72202x 72202x 72202x 170x 170x 3953x 3953x 3953x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 438x 438x 438x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 5033x 5033x 5033x 5033x 5033x 5033x 5033x 9x 9x 5030x 5030x 5033x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 9568x 9568x 9568x 9568x 14x 14x 14x 14x 9554x 9554x 9554x 9568x 5647x 5647x 8983x 63x 63x 3900x 3844x 3844x 3844x 351x 351x 3844x 9554x 9554x 9554x 9564x 5726x 5726x 9554x 9554x 9554x 9568x 170x 170x 170x 43602x 43602x 43602x 43602x 43602x 43602x 38392x 38392x 38392x 38392x 38392x 38392x 12x 12x 4x 4x 4x 4x 4x 12x 12x 38392x 43602x 170x 170x 170x 170x 170x 170x 170x 170x 41699x 41699x 41699x 2x 2x 2x 2x 2x 41699x 4x 4x 4x 4x 4x 4x 4x 4x 41699x 153x 153x 153x 153x 153x 5x 5x 153x 38359x 38359x 38359x 38359x 38359x 38359x 38359x 38359x 38359x 38359x 38359x 38359x 38359x 38359x 38359x 38359x 38359x 41693x 38358x 38358x 38359x 38359x 38359x 38359x 38359x 38359x 38359x 38359x 38359x 38359x 39555x 31929x 31929x 41693x 1220x 1220x 1220x 1220x 1220x 1220x 1220x 1220x 1220x 1220x 1220x 1220x 1220x 1220x 1220x 1216x 1216x 1216x 1220x 1220x 1220x 38355x 38355x 41699x 41699x 41699x 12x 4x 4x 12x 8x 8x 12x 12x 38355x 38355x 38355x 38355x 38355x 38355x 38355x 38355x 38355x 38355x 38355x 38355x 38355x 38355x 38355x 41699x 30991x 3x 3x 3x 3x 30990x 7412x 7412x 30991x 38355x 38355x 38355x 38355x 38355x 38355x 38355x 38355x 41699x 170x 170x 170x 170x 170x 133816x 135896x 135896x 135896x 170x 170x 170x 170x 170x 170x 9905x 9905x 15x 15x 15x 9890x 9890x 9900x 9890x 9890x 9890x 9890x 9890x 9890x 9890x 9890x 9890x 9905x 9905x 9888x 9888x 170x 170x 9884x 9884x 9884x 9884x 9884x 9884x 9884x 9884x 170x 170x 170x 170x 4x 4x 1x 1x 3x 3x 2x 2x 2x 3x 3x 3x 3x 3x 3x 2x 2x 3x 3x 3x 4x 170x 170x 170x 170x 170x 1305x 1305x 1305x 3x 3x 3x 3x 2x 2x 2x 2x 3x 1303x 1303x 170x 170x 170x 170x 1175x 1175x 1175x 1175x 2x 2x 2x 1173x 1175x 711x 711x 711x 1173x 1173x 170x 170x 170x 170x 194x 194x 194x 194x 2x 2x 2x 2x 192x 194x 22x 22x 22x 22x 192x 192x 170x 170x 170x 170x 3x 170x 170x 170x 170x 170x 170x 2x 2x 170x 170x 170x 170x 170x 9913x 170x 170x 170x 170x 170x 170x 170x 170x 11x 4x 11x 4x 7x 1x 2x 2x 11x 170x 170x 170x 170x 170x 170x 6039x 6037x 6037x 6039x 170x 170x 170x 170x 170x 35553x 35553x 170x 170x 170x 30675x 30675x 30675x 30675x 30675x 30675x 30675x 30675x 170x 170x 170x 54124x 54124x 54124x 3840x 3840x 54119x 30669x 30669x 170x 170x 170x 170x 9999x 9999x 9999x 9999x 170x 170x 170x 8x 6x 6x 6x 2x 2x 6x 4x 4x 8x 2x 2x 8x 170x 170x 170x 926x 926x 3x 3x 3x 3x 3x 3x 3x 926x 170x 170x 170x 170x 15676x 15676x 6x 6x 15676x 170x 170x 170x 170x 82633x 82633x 82633x 170x 170x 170x 170x 6799x 6799x 6484x 6484x 6799x 170x 170x 170x 4495x 4495x 4495x 4495x 4495x 3494x 3494x 170x 170x 170x 170x 36066x 36066x 36066x 36066x 36066x 37005x 37005x 36066x 36066x 36066x 36051x 36051x 36051x 36051x 36051x 36051x 36051x 36051x 5x 5x 5x 5x 5x 5x 5x 36051x 36046x 35947x 35947x 36046x 36046x 36051x 36051x 36051x 36051x 36066x 15x 15x 15x 36066x 36066x 4998x 4998x 4998x 4998x 4998x 4998x 170x 170x 170x 5x 5x 5x 170x 170x 170x 113x 20x 113x 44x 44x 44x 44x 93x 170x 170x 50816x 50816x 50816x 50816x 50816x 50816x 50816x 50816x 170x 170x 26x 170x 170x 170x 32x 170x 170x 170x 15x 170x 170x 170x 66x 170x 170x 170x 170x 15x 3x 15x 9x 9x 9x 9x 12x 170x 170x 170x 170x 4x 170x 170x 170x 170x 7x 170x 170x 170x 170x 1459x 170x 170x 170x 81191x 81191x 81191x 81191x 2713x 2713x 2713x 2687x 2713x 2713x 2713x 78478x 78478x 78478x 81191x 1x 1x 1x 78477x 78477x 78477x 78477x 78477x 81175x 64911x 64911x 78475x 81025x 170x 170x 170x 170x 13570x 170x 170x 170x 170x 64934x 170x 170x 170x 170x 170x 170x 63x 170x 170x 170x 63x 63x 63x 63x 63x 63x 63x 57x 57x 12291x 12291x 12291x 12291x 57x 57x 1x 1x 2x 2x 2x 2x 2x 2x 2x 57x 2x 2x 2x 2x 2x 2x 57x 57x 170x 170x 170x 90x 90x 90x 90x 90x 90x 90x 90x 90x 90x 13x 13x 13x 2x 2x 2x 13x 90x 90x 170x 170x 5673x 5673x 5673x 5673x 5673x 5673x 5673x 5673x 5673x 5673x 11x 8x 8x 11x 3x 3x 3x 11x 11x 11x 11x 11x 3x 3x 3x 3x 11x 5670x 5673x 5614x 5614x 5614x 5614x 5614x 5614x 5614x 5614x 5614x 4922x 4922x 5670x 56x 56x 56x 56x 56x 56x 5670x 5670x 1x 1x 1x 1x 1x 1x 1x 1x 1x 5670x 1x 1x 5673x 170x 170x 170x 6154x 6154x 6154x 6154x 6154x 6154x 5031x 6126x 1123x 1123x 6154x 6154x 6154x 6154x 6154x 6154x 6149x 6149x 6154x 6149x 6150x 72x 72x 72x 72x 6149x 6149x 6149x 6149x 6149x 6149x 5247x 5247x 5247x 5247x 5247x 6149x 6149x 3743x 3743x 6149x 6149x 6149x 6149x 6149x 6150x 57x 57x 57x 57x 6147x 6092x 6092x 5868x 170x 170x 170x 6092x 6092x 6092x 6092x 6092x 6092x 1x 1x 6091x 6091x 6x 6x 6090x 6090x 6090x 96x 96x 96x 5994x 5994x 5826x 5826x 5826x 5826x 6090x 457x 457x 457x 455x 455x 455x 455x 457x 457x 457x 5369x 5369x 6090x 5361x 5652x 5361x 5361x 5625x 6092x 6092x 6092x 6092x 6092x 6092x 5104x 5104x 5361x 5361x 5361x 5361x 6092x 6092x 5361x 5346x 5346x 5346x 5346x 5346x 5346x 5172x 5334x 8x 8x 8x 8x 5334x 1x 1x 5164x 1x 1x 1x 1x 5163x 5162x 5162x 5162x 5162x 5162x 5162x 5162x 5361x 6092x 6092x 170x 170x 10x 10x 10x 170x 170x 170x 102x 3x 3x 3x 99x 99x 98x 98x 99x 99x 170x 170x 170x 170x 242x 3x 3x 3x 239x 239x 235x 235x 239x 239x 170x 170x 170x 5669x 5669x 5669x 5669x 5669x 34x 34x 5635x 5635x 5635x 5635x 5635x 5635x 5635x 5635x 5258x 5258x 5258x 5258x 5258x 2797x 2797x 5258x 5258x 159x 159x 5258x 5258x 5258x 5258x 5258x 5258x 5258x 5258x 5258x 1x 1x 5669x 377x 377x 377x 2x 2x 377x 377x 377x 377x 377x 377x 2x 2x 2x 377x 377x 5669x 170x 1921x 1921x 1918x 1918x 3x 3x 3x 2x 3x 3x 1x 1x 1x 1x 1x 1921x 170x 2250x 2250x 2250x 2230x 2230x 2230x 2245x 264x 264x 264x 2250x 1964x 1964x 1964x 1331x 1331x 1966x 2x 2x 2248x 1x 1x 1x 1x 1x 1x 2228x 2228x 2228x 2228x 2228x 2228x 2228x 2228x 2228x 2250x 2250x 2250x 2250x 2250x 2250x 170x 170x 170x 170x 3997x 170x 170x 1820x 1820x 1820x 1820x 1820x 1820x 1820x 14x 14x 14x 3x 3x 3x 3x 11x 11x 11x 12x 11x 14x 1820x 42x 42x 1806x 1764x 1764x 1764x 1817x 1820x 1806x 1806x 6x 6x 6x 1x 1x 1x 1x 1805x 1648x 1788x 152x 152x 1806x 1816x 1817x 8x 8x 8x 1808x 1808x 1820x 170x 1890x 1890x 1890x 1890x 1890x 1890x 79x 1890x 1811x 1811x 1811x 1811x 1811x 1811x 1632x 1632x 1632x 1x 1x 1x 1632x 1631x 1631x 1631x 1632x 1811x 1811x 1811x 1811x 1811x 9x 9x 9x 9x 1802x 1802x 1881x 1881x 1881x 1881x 1881x 1881x 1881x 1881x 1890x 1890x 1890x 9x 9x 9x 9x 9x 9x 9x 9x 9x 9x 1872x 1872x 1872x 1872x 1872x 1872x 1883x 1872x 1872x 1872x 1872x 1872x 1890x 170x 170x 170x 18x 18x 18x 170x 170x 1872x 1872x 1872x 1872x 1872x 170x 170x 1900x 1900x 1900x 1900x 1900x 1900x 1900x 1818x 1818x 1818x 1818x 1818x 1818x 82x 82x 82x 82x 82x 82x 82x 82x 82x 82x 82x 82x 82x 82x 79x 79x 79x 7x 7x 7x 72x 72x 72x 72x 72x 72x 79x 1900x 170x 170x 170x 1929x 1929x 1929x 1929x 1929x 1x 1x 1928x 1929x 1689x 1689x 1928x 1928x 1929x 1929x 1929x 1929x 1929x 1929x 1929x 7x 7x 7x 7x 7x 1921x 1921x 1929x 15x 15x 15x 1905x 1905x 1905x 1905x 1905x 1929x 1929x 1929x 120x 120x 1905x 1905x 1905x 1905x 1929x 1849x 1849x 1849x 1849x 171x 171x 1846x 1662x 1662x 1662x 1662x 1833x 1833x 56x 56x 56x 1929x 45x 45x 45x 45x 45x 45x 6x 6x 6x 6x 39x 39x 39x 40x 39x 40x 40x 1x 1x 1x 39x 39x 11x 1929x 6x 6x 6x 5x 5x 170x 170x 171x 171x 171x 171x 171x 171x 171x 171x 171x 171x 171x 170x 170x 170x 170x 11x 170x 170x 170x 170x 170x 170x 4300x 4279x 4279x 4279x 1x 1x 4278x 4300x 14x 14x 7x 170x 170x 5098x 5098x 5098x 5098x 5098x 5098x 5098x 5098x 5098x 12x 12x 12x 5086x 5086x 5086x 5086x 5086x 5086x 5086x 5086x 5086x 5098x 2453x 2453x 5098x 1x 1x 5086x 5086x 5086x 5086x 5086x 5086x 5086x 5098x 170x 170x 170x 170x 170x 170x 170x 170x 17x 17x 17x 17x 17x 17x 17x 17x 17x 17x 17x 5x 5x 5x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x 170x 170x 170x 170x 1796x 130x 3x 3x 3x 127x 127x 127x 130x 1796x 1796x 1775x 1775x 1775x 1796x 1796x 8x 8x 10x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 1796x 1788x 1788x 1796x 1796x 170x 170x 170x 6794x 6794x 6794x 5045x 5045x 5045x 5045x 1749x 1749x 1749x 1749x 1749x 170x 170x 170x 1761x 1761x 1761x 1761x 170x 170x 170x 1x 1x 1x 1x 1x 1x 1x 1x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 10x 10x 10x 10x 10x 10x 170x 170x 170x 2x 2x 2x 2x 2x 2x 170x 170x 170x 70x 70x 70x 70x 70x 70x 170x 170x 170x 170x 170x 170x 170x 170x 3x 2x 2x 2x 2x 2x 170x 170x 170x 170x 170x 170x 170x 170x 7346x 7346x 170x 170x 994x 994x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x 170x | // Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
const {
ArrayIsArray,
ArrayPrototypeIndexOf,
Boolean,
Number,
NumberIsNaN,
NumberParseInt,
ObjectDefineProperty,
ObjectSetPrototypeOf,
Symbol,
} = primordials;
const EventEmitter = require('events');
const stream = require('stream');
let debug = require('internal/util/debuglog').debuglog('net', (fn) => {
debug = fn;
});
const {
isIP,
isIPv4,
isIPv6,
normalizedArgsSymbol,
makeSyncWrite
} = require('internal/net');
const assert = require('internal/assert');
const {
UV_EADDRINUSE,
UV_EINVAL,
UV_ENOTCONN
} = internalBinding('uv');
const { Buffer } = require('buffer');
const { guessHandleType } = internalBinding('util');
const { ShutdownWrap } = internalBinding('stream_wrap');
const {
TCP,
TCPConnectWrap,
constants: TCPConstants
} = internalBinding('tcp_wrap');
const {
Pipe,
PipeConnectWrap,
constants: PipeConstants
} = internalBinding('pipe_wrap');
const {
newAsyncId,
defaultTriggerAsyncIdScope,
symbols: { async_id_symbol, owner_symbol }
} = require('internal/async_hooks');
const {
writevGeneric,
writeGeneric,
onStreamRead,
kAfterAsyncWrite,
kHandle,
kUpdateTimer,
setStreamTimeout,
kBuffer,
kBufferCb,
kBufferGen
} = require('internal/stream_base_commons');
const {
codes: {
ERR_INVALID_ADDRESS_FAMILY,
ERR_INVALID_ARG_TYPE,
ERR_INVALID_ARG_VALUE,
ERR_INVALID_FD_TYPE,
ERR_INVALID_IP_ADDRESS,
ERR_INVALID_HANDLE_TYPE,
ERR_SERVER_ALREADY_LISTEN,
ERR_SERVER_NOT_RUNNING,
ERR_SOCKET_CLOSED,
ERR_MISSING_ARGS,
},
errnoException,
exceptionWithHostPort,
genericNodeError,
uvExceptionWithHostPort,
} = require('internal/errors');
const { isUint8Array } = require('internal/util/types');
const {
validateAbortSignal,
validateFunction,
validateInt32,
validateNumber,
validatePort,
validateString
} = require('internal/validators');
const kLastWriteQueueSize = Symbol('lastWriteQueueSize');
const {
DTRACE_NET_SERVER_CONNECTION,
DTRACE_NET_STREAM_END
} = require('internal/dtrace');
// Lazy loaded to improve startup performance.
let cluster;
let dns;
let BlockList;
let SocketAddress;
const { clearTimeout } = require('timers');
const { kTimeout } = require('internal/timers');
const DEFAULT_IPV4_ADDR = '0.0.0.0';
const DEFAULT_IPV6_ADDR = '::';
const isWindows = process.platform === 'win32';
const noop = () => {};
const kPerfHooksNetConnectContext = Symbol('kPerfHooksNetConnectContext');
const {
hasObserver,
startPerf,
stopPerf,
} = require('internal/perf/observe');
function getFlags(ipv6Only) {
return ipv6Only === true ? TCPConstants.UV_TCP_IPV6ONLY : 0;
}
function createHandle(fd, is_server) {
validateInt32(fd, 'fd', 0);
const type = guessHandleType(fd);
if (type === 'PIPE') {
return new Pipe(
is_server ? PipeConstants.SERVER : PipeConstants.SOCKET
);
}
if (type === 'TCP') {
return new TCP(
is_server ? TCPConstants.SERVER : TCPConstants.SOCKET
);
}
throw new ERR_INVALID_FD_TYPE(type);
}
function getNewAsyncId(handle) {
return (!handle || typeof handle.getAsyncId !== 'function') ?
newAsyncId() : handle.getAsyncId();
}
function isPipeName(s) {
return typeof s === 'string' && toNumber(s) === false;
}
/**
* Creates a new TCP or IPC server
* @param {{
* allowHalfOpen?: boolean;
* pauseOnConnect?: boolean;
* }} [options]
* @param {Function} [connectionListener]
* @returns {Server}
*/
function createServer(options, connectionListener) {
return new Server(options, connectionListener);
}
// Target API:
//
// let s = net.connect({port: 80, host: 'google.com'}, function() {
// ...
// });
//
// There are various forms:
//
// connect(options, [cb])
// connect(port, [host], [cb])
// connect(path, [cb]);
//
function connect(...args) {
const normalized = normalizeArgs(args);
const options = normalized[0];
debug('createConnection', normalized);
const socket = new Socket(options);
if (options.timeout) {
socket.setTimeout(options.timeout);
}
return socket.connect(normalized);
}
// Returns an array [options, cb], where options is an object,
// cb is either a function or null.
// Used to normalize arguments of Socket.prototype.connect() and
// Server.prototype.listen(). Possible combinations of parameters:
// (options[...][, cb])
// (path[...][, cb])
// ([port][, host][...][, cb])
// For Socket.prototype.connect(), the [...] part is ignored
// For Server.prototype.listen(), the [...] part is [, backlog]
// but will not be handled here (handled in listen())
function normalizeArgs(args) {
let arr;
if (args.length === 0) {
arr = [{}, null];
arr[normalizedArgsSymbol] = true;
return arr;
}
const arg0 = args[0];
let options = {};
if (typeof arg0 === 'object' && arg0 !== null) {
// (options[...][, cb])
options = arg0;
} else if (isPipeName(arg0)) {
// (path[...][, cb])
options.path = arg0;
} else {
// ([port][, host][...][, cb])
options.port = arg0;
if (args.length > 1 && typeof args[1] === 'string') {
options.host = args[1];
}
}
const cb = args[args.length - 1];
if (typeof cb !== 'function')
arr = [options, null];
else
arr = [options, cb];
arr[normalizedArgsSymbol] = true;
return arr;
}
// Called when creating new Socket, or when re-using a closed Socket
function initSocketHandle(self) {
self._undestroy();
self._sockname = null;
// Handle creation may be deferred to bind() or connect() time.
if (self._handle) {
self._handle[owner_symbol] = self;
self._handle.onread = onStreamRead;
self[async_id_symbol] = getNewAsyncId(self._handle);
let userBuf = self[kBuffer];
if (userBuf) {
const bufGen = self[kBufferGen];
if (bufGen !== null) {
userBuf = bufGen();
if (!isUint8Array(userBuf))
return;
self[kBuffer] = userBuf;
}
self._handle.useUserBuffer(userBuf);
}
}
}
const kBytesRead = Symbol('kBytesRead');
const kBytesWritten = Symbol('kBytesWritten');
const kSetNoDelay = Symbol('kSetNoDelay');
const kSetKeepAlive = Symbol('kSetKeepAlive');
const kSetKeepAliveInitialDelay = Symbol('kSetKeepAliveInitialDelay');
function Socket(options) {
if (!(this instanceof Socket)) return new Socket(options);
if (options?.objectMode) {
throw new ERR_INVALID_ARG_VALUE(
'options.objectMode',
options.objectMode,
'is not supported'
);
} else if (options?.readableObjectMode || options?.writableObjectMode) {
throw new ERR_INVALID_ARG_VALUE(
`options.${
options.readableObjectMode ? 'readableObjectMode' : 'writableObjectMode'
}`,
options.readableObjectMode || options.writableObjectMode,
'is not supported'
);
}
if (typeof options?.keepAliveInitialDelay !== 'undefined') {
validateNumber(
options?.keepAliveInitialDelay, 'options.keepAliveInitialDelay'
);
if (options.keepAliveInitialDelay < 0) {
options.keepAliveInitialDelay = 0;
}
}
this.connecting = false;
// Problem with this is that users can supply their own handle, that may not
// have _handle.getAsyncId(). In this case an[async_id_symbol] should
// probably be supplied by async_hooks.
this[async_id_symbol] = -1;
this._hadError = false;
this[kHandle] = null;
this._parent = null;
this._host = null;
this[kLastWriteQueueSize] = 0;
this[kTimeout] = null;
this[kBuffer] = null;
this[kBufferCb] = null;
this[kBufferGen] = null;
if (typeof options === 'number')
options = { fd: options }; // Legacy interface.
else
options = { ...options };
// Default to *not* allowing half open sockets.
options.allowHalfOpen = Boolean(options.allowHalfOpen);
// For backwards compat do not emit close on destroy.
options.emitClose = false;
options.autoDestroy = true;
// Handle strings directly.
options.decodeStrings = false;
stream.Duplex.call(this, options);
if (options.handle) {
this._handle = options.handle; // private
this[async_id_symbol] = getNewAsyncId(this._handle);
} else if (options.fd !== undefined) {
const { fd } = options;
let err;
// createHandle will throw ERR_INVALID_FD_TYPE if `fd` is not
// a valid `PIPE` or `TCP` descriptor
this._handle = createHandle(fd, false);
err = this._handle.open(fd);
// While difficult to fabricate, in some architectures
// `open` may return an error code for valid file descriptors
// which cannot be opened. This is difficult to test as most
// un-openable fds will throw on `createHandle`
if (err)
throw errnoException(err, 'open');
this[async_id_symbol] = this._handle.getAsyncId();
if ((fd === 1 || fd === 2) &&
(this._handle instanceof Pipe) && isWindows) {
// Make stdout and stderr blocking on Windows
err = this._handle.setBlocking(true);
if (err)
throw errnoException(err, 'setBlocking');
this._writev = null;
this._write = makeSyncWrite(fd);
// makeSyncWrite adjusts this value like the original handle would, so
// we need to let it do that by turning it into a writable, own
// property.
ObjectDefineProperty(this._handle, 'bytesWritten', {
__proto__: null,
value: 0, writable: true
});
}
}
const onread = options.onread;
if (onread !== null && typeof onread === 'object' &&
(isUint8Array(onread.buffer) || typeof onread.buffer === 'function') &&
typeof onread.callback === 'function') {
if (typeof onread.buffer === 'function') {
this[kBuffer] = true;
this[kBufferGen] = onread.buffer;
} else {
this[kBuffer] = onread.buffer;
}
this[kBufferCb] = onread.callback;
}
this[kSetNoDelay] = Boolean(options.noDelay);
this[kSetKeepAlive] = Boolean(options.keepAlive);
this[kSetKeepAliveInitialDelay] = ~~(options.keepAliveInitialDelay / 1000);
// Shut down the socket when we're finished with it.
this.on('end', onReadableStreamEnd);
initSocketHandle(this);
this._pendingData = null;
this._pendingEncoding = '';
// If we have a handle, then start the flow of data into the
// buffer. if not, then this will happen when we connect
if (this._handle && options.readable !== false) {
if (options.pauseOnCreate) {
// Stop the handle from reading and pause the stream
this._handle.reading = false;
this._handle.readStop();
this.readableFlowing = false;
} else if (!options.manualStart) {
this.read(0);
}
}
// Reserve properties
this.server = null;
this._server = null;
// Used after `.destroy()`
this[kBytesRead] = 0;
this[kBytesWritten] = 0;
}
ObjectSetPrototypeOf(Socket.prototype, stream.Duplex.prototype);
ObjectSetPrototypeOf(Socket, stream.Duplex);
// Refresh existing timeouts.
Socket.prototype._unrefTimer = function _unrefTimer() {
for (let s = this; s !== null; s = s._parent) {
if (s[kTimeout])
s[kTimeout].refresh();
}
};
// The user has called .end(), and all the bytes have been
// sent out to the other side.
Socket.prototype._final = function(cb) {
// If still connecting - defer handling `_final` until 'connect' will happen
if (this.pending) {
debug('_final: not yet connected');
return this.once('connect', () => this._final(cb));
}
if (!this._handle)
return cb();
debug('_final: not ended, call shutdown()');
const req = new ShutdownWrap();
req.oncomplete = afterShutdown;
req.handle = this._handle;
req.callback = cb;
const err = this._handle.shutdown(req);
if (err === 1 || err === UV_ENOTCONN) // synchronous finish
return cb();
else if (err !== 0)
return cb(errnoException(err, 'shutdown'));
};
function afterShutdown() {
const self = this.handle[owner_symbol];
debug('afterShutdown destroyed=%j', self.destroyed,
self._readableState);
this.callback();
}
// Provide a better error message when we call end() as a result
// of the other side sending a FIN. The standard 'write after end'
// is overly vague, and makes it seem like the user's code is to blame.
function writeAfterFIN(chunk, encoding, cb) {
if (!this.writableEnded) {
return stream.Duplex.prototype.write.call(this, chunk, encoding, cb);
}
if (typeof encoding === 'function') {
cb = encoding;
encoding = null;
}
const er = genericNodeError(
'This socket has been ended by the other party',
{ code: 'EPIPE' }
);
if (typeof cb === 'function') {
defaultTriggerAsyncIdScope(this[async_id_symbol], process.nextTick, cb, er);
}
this.destroy(er);
return false;
}
Socket.prototype.setTimeout = setStreamTimeout;
Socket.prototype._onTimeout = function() {
const handle = this._handle;
const lastWriteQueueSize = this[kLastWriteQueueSize];
if (lastWriteQueueSize > 0 && handle) {
// `lastWriteQueueSize !== writeQueueSize` means there is
// an active write in progress, so we suppress the timeout.
const { writeQueueSize } = handle;
if (lastWriteQueueSize !== writeQueueSize) {
this[kLastWriteQueueSize] = writeQueueSize;
this._unrefTimer();
return;
}
}
debug('_onTimeout');
this.emit('timeout');
};
Socket.prototype.setNoDelay = function(enable) {
// Backwards compatibility: assume true when `enable` is omitted
enable = Boolean(enable === undefined ? true : enable);
if (!this._handle) {
this[kSetNoDelay] = enable;
return this;
}
if (this._handle.setNoDelay && enable !== this[kSetNoDelay]) {
this[kSetNoDelay] = enable;
this._handle.setNoDelay(enable);
}
return this;
};
Socket.prototype.setKeepAlive = function(enable, initialDelayMsecs) {
enable = Boolean(enable);
const initialDelay = ~~(initialDelayMsecs / 1000);
if (!this._handle) {
this[kSetKeepAlive] = enable;
this[kSetKeepAliveInitialDelay] = initialDelay;
return this;
}
if (this._handle.setKeepAlive && enable !== this[kSetKeepAlive]) {
this[kSetKeepAlive] = enable;
this[kSetKeepAliveInitialDelay] = initialDelay;
this._handle.setKeepAlive(enable, initialDelay);
}
return this;
};
Socket.prototype.address = function() {
return this._getsockname();
};
ObjectDefineProperty(Socket.prototype, '_connecting', {
__proto__: null,
get: function() {
return this.connecting;
}
});
ObjectDefineProperty(Socket.prototype, 'pending', {
__proto__: null,
get() {
return !this._handle || this.connecting;
},
configurable: true
});
ObjectDefineProperty(Socket.prototype, 'readyState', {
__proto__: null,
get: function() {
if (this.connecting) {
return 'opening';
} else if (this.readable && this.writable) {
return 'open';
} else if (this.readable && !this.writable) {
return 'readOnly';
} else if (!this.readable && this.writable) {
return 'writeOnly';
}
return 'closed';
}
});
ObjectDefineProperty(Socket.prototype, 'bufferSize', {
__proto__: null,
get: function() {
if (this._handle) {
return this.writableLength;
}
}
});
ObjectDefineProperty(Socket.prototype, kUpdateTimer, {
__proto__: null,
get: function() {
return this._unrefTimer;
}
});
function tryReadStart(socket) {
// Not already reading, start the flow
debug('Socket._handle.readStart');
socket._handle.reading = true;
const err = socket._handle.readStart();
if (err)
socket.destroy(errnoException(err, 'read'));
}
// Just call handle.readStart until we have enough in the buffer
Socket.prototype._read = function(n) {
debug('_read');
if (this.connecting || !this._handle) {
debug('_read wait for connection');
this.once('connect', () => this._read(n));
} else if (!this._handle.reading) {
tryReadStart(this);
}
};
Socket.prototype.end = function(data, encoding, callback) {
stream.Duplex.prototype.end.call(this,
data, encoding, callback);
DTRACE_NET_STREAM_END(this);
return this;
};
Socket.prototype.resetAndDestroy = function() {
if (this._handle) {
if (!(this._handle instanceof TCP))
throw new ERR_INVALID_HANDLE_TYPE();
if (this.connecting) {
debug('reset wait for connection');
this.once('connect', () => this._reset());
} else {
this._reset();
}
} else {
this.destroy(new ERR_SOCKET_CLOSED());
}
return this;
};
Socket.prototype.pause = function() {
if (this[kBuffer] && !this.connecting && this._handle &&
this._handle.reading) {
this._handle.reading = false;
if (!this.destroyed) {
const err = this._handle.readStop();
if (err)
this.destroy(errnoException(err, 'read'));
}
}
return stream.Duplex.prototype.pause.call(this);
};
Socket.prototype.resume = function() {
if (this[kBuffer] && !this.connecting && this._handle &&
!this._handle.reading) {
tryReadStart(this);
}
return stream.Duplex.prototype.resume.call(this);
};
Socket.prototype.read = function(n) {
if (this[kBuffer] && !this.connecting && this._handle &&
!this._handle.reading) {
tryReadStart(this);
}
return stream.Duplex.prototype.read.call(this, n);
};
// Called when the 'end' event is emitted.
function onReadableStreamEnd() {
if (!this.allowHalfOpen) {
this.write = writeAfterFIN;
}
}
Socket.prototype.destroySoon = function() {
if (this.writable)
this.end();
if (this.writableFinished)
this.destroy();
else
this.once('finish', this.destroy);
};
Socket.prototype._destroy = function(exception, cb) {
debug('destroy');
this.connecting = false;
for (let s = this; s !== null; s = s._parent) {
clearTimeout(s[kTimeout]);
}
debug('close');
if (this._handle) {
if (this !== process.stderr)
debug('close handle');
const isException = exception ? true : false;
// `bytesRead` and `kBytesWritten` should be accessible after `.destroy()`
this[kBytesRead] = this._handle.bytesRead;
this[kBytesWritten] = this._handle.bytesWritten;
if (this.resetAndClosing) {
this.resetAndClosing = false;
const err = this._handle.reset(() => {
debug('emit close');
this.emit('close', isException);
});
if (err)
this.emit('error', errnoException(err, 'reset'));
} else {
this._handle.close(() => {
debug('emit close');
this.emit('close', isException);
});
}
this._handle.onread = noop;
this._handle = null;
this._sockname = null;
cb(exception);
} else {
cb(exception);
process.nextTick(emitCloseNT, this);
}
if (this._server) {
debug('has server');
this._server._connections--;
if (this._server._emitCloseIfDrained) {
this._server._emitCloseIfDrained();
}
}
};
Socket.prototype._reset = function() {
debug('reset connection');
this.resetAndClosing = true;
return this.destroy();
};
Socket.prototype._getpeername = function() {
if (!this._handle || !this._handle.getpeername || this.connecting) {
return this._peername || {};
} else if (!this._peername) {
this._peername = {};
// FIXME(bnoordhuis) Throw when the return value is not 0?
this._handle.getpeername(this._peername);
}
return this._peername;
};
function protoGetter(name, callback) {
ObjectDefineProperty(Socket.prototype, name, {
__proto__: null,
configurable: false,
enumerable: true,
get: callback
});
}
protoGetter('bytesRead', function bytesRead() {
return this._handle ? this._handle.bytesRead : this[kBytesRead];
});
protoGetter('remoteAddress', function remoteAddress() {
return this._getpeername().address;
});
protoGetter('remoteFamily', function remoteFamily() {
return this._getpeername().family;
});
protoGetter('remotePort', function remotePort() {
return this._getpeername().port;
});
Socket.prototype._getsockname = function() {
if (!this._handle || !this._handle.getsockname) {
return {};
} else if (!this._sockname) {
this._sockname = {};
// FIXME(bnoordhuis) Throw when the return value is not 0?
this._handle.getsockname(this._sockname);
}
return this._sockname;
};
protoGetter('localAddress', function localAddress() {
return this._getsockname().address;
});
protoGetter('localPort', function localPort() {
return this._getsockname().port;
});
Socket.prototype[kAfterAsyncWrite] = function() {
this[kLastWriteQueueSize] = 0;
};
Socket.prototype._writeGeneric = function(writev, data, encoding, cb) {
// If we are still connecting, then buffer this for later.
// The Writable logic will buffer up any more writes while
// waiting for this one to be done.
if (this.connecting) {
this._pendingData = data;
this._pendingEncoding = encoding;
this.once('connect', function connect() {
this._writeGeneric(writev, data, encoding, cb);
});
return;
}
this._pendingData = null;
this._pendingEncoding = '';
if (!this._handle) {
cb(new ERR_SOCKET_CLOSED());
return false;
}
this._unrefTimer();
let req;
if (writev)
req = writevGeneric(this, data, cb);
else
req = writeGeneric(this, data, encoding, cb);
if (req.async)
this[kLastWriteQueueSize] = req.bytes;
};
Socket.prototype._writev = function(chunks, cb) {
this._writeGeneric(true, chunks, '', cb);
};
Socket.prototype._write = function(data, encoding, cb) {
this._writeGeneric(false, data, encoding, cb);
};
// Legacy alias. Having this is probably being overly cautious, but it doesn't
// really hurt anyone either. This can probably be removed safely if desired.
protoGetter('_bytesDispatched', function _bytesDispatched() {
return this._handle ? this._handle.bytesWritten : this[kBytesWritten];
});
protoGetter('bytesWritten', function bytesWritten() {
let bytes = this._bytesDispatched;
const data = this._pendingData;
const encoding = this._pendingEncoding;
const writableBuffer = this.writableBuffer;
if (!writableBuffer)
return undefined;
for (const el of writableBuffer) {
bytes += el.chunk instanceof Buffer ?
el.chunk.length :
Buffer.byteLength(el.chunk, el.encoding);
}
if (ArrayIsArray(data)) {
// Was a writev, iterate over chunks to get total length
for (let i = 0; i < data.length; i++) {
const chunk = data[i];
if (data.allBuffers || chunk instanceof Buffer)
bytes += chunk.length;
else
bytes += Buffer.byteLength(chunk.chunk, chunk.encoding);
}
} else if (data) {
// Writes are either a string or a Buffer.
if (typeof data !== 'string')
bytes += data.length;
else
bytes += Buffer.byteLength(data, encoding);
}
return bytes;
});
function checkBindError(err, port, handle) {
// EADDRINUSE may not be reported until we call listen() or connect().
// To complicate matters, a failed bind() followed by listen() or connect()
// will implicitly bind to a random port. Ergo, check that the socket is
// bound to the expected port before calling listen() or connect().
//
// FIXME(bnoordhuis) Doesn't work for pipe handles, they don't have a
// getsockname() method. Non-issue for now, the cluster module doesn't
// really support pipes anyway.
if (err === 0 && port > 0 && handle.getsockname) {
const out = {};
err = handle.getsockname(out);
if (err === 0 && port !== out.port) {
debug(`checkBindError, bound to ${out.port} instead of ${port}`);
err = UV_EADDRINUSE;
}
}
return err;
}
function internalConnect(
self, address, port, addressType, localAddress, localPort, flags) {
// TODO return promise from Socket.prototype.connect which
// wraps _connectReq.
assert(self.connecting);
let err;
if (localAddress || localPort) {
if (addressType === 4) {
localAddress = localAddress || DEFAULT_IPV4_ADDR;
err = self._handle.bind(localAddress, localPort);
} else { // addressType === 6
localAddress = localAddress || DEFAULT_IPV6_ADDR;
err = self._handle.bind6(localAddress, localPort, flags);
}
debug('binding to localAddress: %s and localPort: %d (addressType: %d)',
localAddress, localPort, addressType);
err = checkBindError(err, localPort, self._handle);
if (err) {
const ex = exceptionWithHostPort(err, 'bind', localAddress, localPort);
self.destroy(ex);
return;
}
}
if (addressType === 6 || addressType === 4) {
const req = new TCPConnectWrap();
req.oncomplete = afterConnect;
req.address = address;
req.port = port;
req.localAddress = localAddress;
req.localPort = localPort;
if (addressType === 4)
err = self._handle.connect(req, address, port);
else
err = self._handle.connect6(req, address, port);
} else {
const req = new PipeConnectWrap();
req.address = address;
req.oncomplete = afterConnect;
err = self._handle.connect(req, address, afterConnect);
}
if (err) {
const sockname = self._getsockname();
let details;
if (sockname) {
details = sockname.address + ':' + sockname.port;
}
const ex = exceptionWithHostPort(err, 'connect', address, port, details);
self.destroy(ex);
} else if ((addressType === 6 || addressType === 4) && hasObserver('net')) {
startPerf(self, kPerfHooksNetConnectContext, { type: 'net', name: 'connect', detail: { host: address, port } });
}
}
Socket.prototype.connect = function(...args) {
let normalized;
// If passed an array, it's treated as an array of arguments that have
// already been normalized (so we don't normalize more than once). This has
// been solved before in https://github.com/nodejs/node/pull/12342, but was
// reverted as it had unintended side effects.
if (ArrayIsArray(args[0]) && args[0][normalizedArgsSymbol]) {
normalized = args[0];
} else {
normalized = normalizeArgs(args);
}
const options = normalized[0];
const cb = normalized[1];
// options.port === null will be checked later.
if (options.port === undefined && options.path == null)
throw new ERR_MISSING_ARGS(['options', 'port', 'path']);
if (this.write !== Socket.prototype.write)
this.write = Socket.prototype.write;
if (this.destroyed) {
this._handle = null;
this._peername = null;
this._sockname = null;
}
const { path } = options;
const pipe = !!path;
debug('pipe', pipe, path);
if (!this._handle) {
this._handle = pipe ?
new Pipe(PipeConstants.SOCKET) :
new TCP(TCPConstants.SOCKET);
initSocketHandle(this);
}
if (cb !== null) {
this.once('connect', cb);
}
this._unrefTimer();
this.connecting = true;
if (pipe) {
validateString(path, 'options.path');
defaultTriggerAsyncIdScope(
this[async_id_symbol], internalConnect, this, path
);
} else {
lookupAndConnect(this, options);
}
return this;
};
function lookupAndConnect(self, options) {
const { localAddress, localPort } = options;
const host = options.host || 'localhost';
let { port } = options;
if (localAddress && !isIP(localAddress)) {
throw new ERR_INVALID_IP_ADDRESS(localAddress);
}
if (localPort) {
validateNumber(localPort, 'options.localPort');
}
if (typeof port !== 'undefined') {
if (typeof port !== 'number' && typeof port !== 'string') {
throw new ERR_INVALID_ARG_TYPE('options.port',
['number', 'string'], port);
}
validatePort(port);
}
port |= 0;
// If host is an IP, skip performing a lookup
const addressType = isIP(host);
if (addressType) {
defaultTriggerAsyncIdScope(self[async_id_symbol], process.nextTick, () => {
if (self.connecting)
defaultTriggerAsyncIdScope(
self[async_id_symbol],
internalConnect,
self, host, port, addressType, localAddress, localPort
);
});
return;
}
if (options.lookup !== undefined)
validateFunction(options.lookup, 'options.lookup');
if (dns === undefined) dns = require('dns');
const dnsopts = {
family: options.family,
hints: options.hints || 0
};
if (!isWindows &&
dnsopts.family !== 4 &&
dnsopts.family !== 6 &&
dnsopts.hints === 0) {
dnsopts.hints = dns.ADDRCONFIG;
}
debug('connect: find host', host);
debug('connect: dns options', dnsopts);
self._host = host;
const lookup = options.lookup || dns.lookup;
defaultTriggerAsyncIdScope(self[async_id_symbol], function() {
lookup(host, dnsopts, function emitLookup(err, ip, addressType) {
self.emit('lookup', err, ip, addressType, host);
// It's possible we were destroyed while looking this up.
// XXX it would be great if we could cancel the promise returned by
// the look up.
if (!self.connecting) return;
if (err) {
// net.createConnection() creates a net.Socket object and immediately
// calls net.Socket.connect() on it (that's us). There are no event
// listeners registered yet so defer the error event to the next tick.
process.nextTick(connectErrorNT, self, err);
} else if (!isIP(ip)) {
err = new ERR_INVALID_IP_ADDRESS(ip);
process.nextTick(connectErrorNT, self, err);
} else if (addressType !== 4 && addressType !== 6) {
err = new ERR_INVALID_ADDRESS_FAMILY(addressType,
options.host,
options.port);
process.nextTick(connectErrorNT, self, err);
} else {
self._unrefTimer();
defaultTriggerAsyncIdScope(
self[async_id_symbol],
internalConnect,
self, ip, port, addressType, localAddress, localPort
);
}
});
});
}
function connectErrorNT(self, err) {
self.destroy(err);
}
Socket.prototype.ref = function() {
if (!this._handle) {
this.once('connect', this.ref);
return this;
}
if (typeof this._handle.ref === 'function') {
this._handle.ref();
}
return this;
};
Socket.prototype.unref = function() {
if (!this._handle) {
this.once('connect', this.unref);
return this;
}
if (typeof this._handle.unref === 'function') {
this._handle.unref();
}
return this;
};
function afterConnect(status, handle, req, readable, writable) {
const self = handle[owner_symbol];
// Callback may come after call to destroy
if (self.destroyed) {
return;
}
debug('afterConnect');
assert(self.connecting);
self.connecting = false;
self._sockname = null;
if (status === 0) {
if (self.readable && !readable) {
self.push(null);
self.read();
}
if (self.writable && !writable) {
self.end();
}
self._unrefTimer();
if (self[kSetNoDelay] && self._handle.setNoDelay) {
self._handle.setNoDelay(true);
}
if (self[kSetKeepAlive] && self._handle.setKeepAlive) {
self._handle.setKeepAlive(true, self[kSetKeepAliveInitialDelay]);
}
self.emit('connect');
self.emit('ready');
// Start the first read, or get an immediate EOF.
// this doesn't actually consume any bytes, because len=0.
if (readable && !self.isPaused())
self.read(0);
if (self[kPerfHooksNetConnectContext] && hasObserver('net')) {
stopPerf(self, kPerfHooksNetConnectContext);
}
} else {
self.connecting = false;
let details;
if (req.localAddress && req.localPort) {
details = req.localAddress + ':' + req.localPort;
}
const ex = exceptionWithHostPort(status,
'connect',
req.address,
req.port,
details);
if (details) {
ex.localAddress = req.localAddress;
ex.localPort = req.localPort;
}
self.destroy(ex);
}
}
function addAbortSignalOption(self, options) {
if (options?.signal === undefined) {
return;
}
validateAbortSignal(options.signal, 'options.signal');
const { signal } = options;
const onAborted = () => {
self.close();
};
if (signal.aborted) {
process.nextTick(onAborted);
} else {
signal.addEventListener('abort', onAborted);
self.once('close', () => signal.removeEventListener('abort', onAborted));
}
}
function Server(options, connectionListener) {
if (!(this instanceof Server))
return new Server(options, connectionListener);
EventEmitter.call(this);
if (typeof options === 'function') {
connectionListener = options;
options = {};
this.on('connection', connectionListener);
} else if (options == null || typeof options === 'object') {
options = { ...options };
if (typeof connectionListener === 'function') {
this.on('connection', connectionListener);
}
} else {
throw new ERR_INVALID_ARG_TYPE('options', 'Object', options);
}
if (typeof options.keepAliveInitialDelay !== 'undefined') {
validateNumber(
options.keepAliveInitialDelay, 'options.keepAliveInitialDelay'
);
if (options.keepAliveInitialDelay < 0) {
options.keepAliveInitialDelay = 0;
}
}
this._connections = 0;
this[async_id_symbol] = -1;
this._handle = null;
this._usingWorkers = false;
this._workers = [];
this._unref = false;
this.allowHalfOpen = options.allowHalfOpen || false;
this.pauseOnConnect = !!options.pauseOnConnect;
this.noDelay = Boolean(options.noDelay);
this.keepAlive = Boolean(options.keepAlive);
this.keepAliveInitialDelay = ~~(options.keepAliveInitialDelay / 1000);
}
ObjectSetPrototypeOf(Server.prototype, EventEmitter.prototype);
ObjectSetPrototypeOf(Server, EventEmitter);
function toNumber(x) { return (x = Number(x)) >= 0 ? x : false; }
// Returns handle if it can be created, or error code if it can't
function createServerHandle(address, port, addressType, fd, flags) {
let err = 0;
// Assign handle in listen, and clean up if bind or listen fails
let handle;
let isTCP = false;
if (typeof fd === 'number' && fd >= 0) {
try {
handle = createHandle(fd, true);
} catch (e) {
// Not a fd we can listen on. This will trigger an error.
debug('listen invalid fd=%d:', fd, e.message);
return UV_EINVAL;
}
err = handle.open(fd);
if (err)
return err;
assert(!address && !port);
} else if (port === -1 && addressType === -1) {
handle = new Pipe(PipeConstants.SERVER);
if (isWindows) {
const instances = NumberParseInt(process.env.NODE_PENDING_PIPE_INSTANCES);
if (!NumberIsNaN(instances)) {
handle.setPendingInstances(instances);
}
}
} else {
handle = new TCP(TCPConstants.SERVER);
isTCP = true;
}
if (address || port || isTCP) {
debug('bind to', address || 'any');
if (!address) {
// Try binding to ipv6 first
err = handle.bind6(DEFAULT_IPV6_ADDR, port, flags);
if (err) {
handle.close();
// Fallback to ipv4
return createServerHandle(DEFAULT_IPV4_ADDR, port);
}
} else if (addressType === 6) {
err = handle.bind6(address, port, flags);
} else {
err = handle.bind(address, port);
}
}
if (err) {
handle.close();
return err;
}
return handle;
}
function setupListenHandle(address, port, addressType, backlog, fd, flags) {
debug('setupListenHandle', address, port, addressType, backlog, fd);
// If there is not yet a handle, we need to create one and bind.
// In the case of a server sent via IPC, we don't need to do this.
if (this._handle) {
debug('setupListenHandle: have a handle already');
} else {
debug('setupListenHandle: create a handle');
let rval = null;
// Try to bind to the unspecified IPv6 address, see if IPv6 is available
if (!address && typeof fd !== 'number') {
rval = createServerHandle(DEFAULT_IPV6_ADDR, port, 6, fd, flags);
if (typeof rval === 'number') {
rval = null;
address = DEFAULT_IPV4_ADDR;
addressType = 4;
} else {
address = DEFAULT_IPV6_ADDR;
addressType = 6;
}
}
if (rval === null)
rval = createServerHandle(address, port, addressType, fd, flags);
if (typeof rval === 'number') {
const error = uvExceptionWithHostPort(rval, 'listen', address, port);
process.nextTick(emitErrorNT, this, error);
return;
}
this._handle = rval;
}
this[async_id_symbol] = getNewAsyncId(this._handle);
this._handle.onconnection = onconnection;
this._handle[owner_symbol] = this;
// Use a backlog of 512 entries. We pass 511 to the listen() call because
// the kernel does: backlogsize = roundup_pow_of_two(backlogsize + 1);
// which will thus give us a backlog of 512 entries.
const err = this._handle.listen(backlog || 511);
if (err) {
const ex = uvExceptionWithHostPort(err, 'listen', address, port);
this._handle.close();
this._handle = null;
defaultTriggerAsyncIdScope(this[async_id_symbol],
process.nextTick,
emitErrorNT,
this,
ex);
return;
}
// Generate connection key, this should be unique to the connection
this._connectionKey = addressType + ':' + address + ':' + port;
// Unref the handle if the server was unref'ed prior to listening
if (this._unref)
this.unref();
defaultTriggerAsyncIdScope(this[async_id_symbol],
process.nextTick,
emitListeningNT,
this);
}
Server.prototype._listen2 = setupListenHandle; // legacy alias
function emitErrorNT(self, err) {
self.emit('error', err);
}
function emitListeningNT(self) {
// Ensure handle hasn't closed
if (self._handle)
self.emit('listening');
}
function listenInCluster(server, address, port, addressType,
backlog, fd, exclusive, flags) {
exclusive = !!exclusive;
if (cluster === undefined) cluster = require('cluster');
if (cluster.isPrimary || exclusive) {
// Will create a new handle
// _listen2 sets up the listened handle, it is still named like this
// to avoid breaking code that wraps this method
server._listen2(address, port, addressType, backlog, fd, flags);
return;
}
const serverQuery = {
address: address,
port: port,
addressType: addressType,
fd: fd,
flags,
backlog,
};
// Get the primary's server handle, and listen on it
cluster._getServer(server, serverQuery, listenOnPrimaryHandle);
function listenOnPrimaryHandle(err, handle) {
err = checkBindError(err, port, handle);
if (err) {
const ex = exceptionWithHostPort(err, 'bind', address, port);
return server.emit('error', ex);
}
// Reuse primary's server handle
server._handle = handle;
// _listen2 sets up the listened handle, it is still named like this
// to avoid breaking code that wraps this method
server._listen2(address, port, addressType, backlog, fd, flags);
}
}
Server.prototype.listen = function(...args) {
const normalized = normalizeArgs(args);
let options = normalized[0];
const cb = normalized[1];
if (this._handle) {
throw new ERR_SERVER_ALREADY_LISTEN();
}
if (cb !== null) {
this.once('listening', cb);
}
const backlogFromArgs =
// (handle, backlog) or (path, backlog) or (port, backlog)
toNumber(args.length > 1 && args[1]) ||
toNumber(args.length > 2 && args[2]); // (port, host, backlog)
options = options._handle || options.handle || options;
const flags = getFlags(options.ipv6Only);
// (handle[, backlog][, cb]) where handle is an object with a handle
if (options instanceof TCP) {
this._handle = options;
this[async_id_symbol] = this._handle.getAsyncId();
listenInCluster(this, null, -1, -1, backlogFromArgs);
return this;
}
addAbortSignalOption(this, options);
// (handle[, backlog][, cb]) where handle is an object with a fd
if (typeof options.fd === 'number' && options.fd >= 0) {
listenInCluster(this, null, null, null, backlogFromArgs, options.fd);
return this;
}
// ([port][, host][, backlog][, cb]) where port is omitted,
// that is, listen(), listen(null), listen(cb), or listen(null, cb)
// or (options[, cb]) where options.port is explicitly set as undefined or
// null, bind to an arbitrary unused port
if (args.length === 0 || typeof args[0] === 'function' ||
(typeof options.port === 'undefined' && 'port' in options) ||
options.port === null) {
options.port = 0;
}
// ([port][, host][, backlog][, cb]) where port is specified
// or (options[, cb]) where options.port is specified
// or if options.port is normalized as 0 before
let backlog;
if (typeof options.port === 'number' || typeof options.port === 'string') {
validatePort(options.port, 'options.port');
backlog = options.backlog || backlogFromArgs;
// start TCP server listening on host:port
if (options.host) {
lookupAndListen(this, options.port | 0, options.host, backlog,
options.exclusive, flags);
} else { // Undefined host, listens on unspecified address
// Default addressType 4 will be used to search for primary server
listenInCluster(this, null, options.port | 0, 4,
backlog, undefined, options.exclusive);
}
return this;
}
// (path[, backlog][, cb]) or (options[, cb])
// where path or options.path is a UNIX domain socket or Windows pipe
if (options.path && isPipeName(options.path)) {
const pipeName = this._pipeName = options.path;
backlog = options.backlog || backlogFromArgs;
listenInCluster(this, pipeName, -1, -1,
backlog, undefined, options.exclusive);
if (!this._handle) {
// Failed and an error shall be emitted in the next tick.
// Therefore, we directly return.
return this;
}
let mode = 0;
if (options.readableAll === true)
mode |= PipeConstants.UV_READABLE;
if (options.writableAll === true)
mode |= PipeConstants.UV_WRITABLE;
if (mode !== 0) {
const err = this._handle.fchmod(mode);
if (err) {
this._handle.close();
this._handle = null;
throw errnoException(err, 'uv_pipe_chmod');
}
}
return this;
}
if (!(('port' in options) || ('path' in options))) {
throw new ERR_INVALID_ARG_VALUE('options', options,
'must have the property "port" or "path"');
}
throw new ERR_INVALID_ARG_VALUE('options', options);
};
function lookupAndListen(self, port, address, backlog, exclusive, flags) {
if (dns === undefined) dns = require('dns');
dns.lookup(address, function doListen(err, ip, addressType) {
if (err) {
self.emit('error', err);
} else {
addressType = ip ? addressType : 4;
listenInCluster(self, ip, port, addressType,
backlog, undefined, exclusive, flags);
}
});
}
ObjectDefineProperty(Server.prototype, 'listening', {
__proto__: null,
get: function() {
return !!this._handle;
},
configurable: true,
enumerable: true
});
Server.prototype.address = function() {
if (this._handle && this._handle.getsockname) {
const out = {};
const err = this._handle.getsockname(out);
if (err) {
throw errnoException(err, 'address');
}
return out;
} else if (this._pipeName) {
return this._pipeName;
}
return null;
};
function onconnection(err, clientHandle) {
const handle = this;
const self = handle[owner_symbol];
debug('onconnection');
if (err) {
self.emit('error', errnoException(err, 'accept'));
return;
}
if (self.maxConnections && self._connections >= self.maxConnections) {
clientHandle.close();
return;
}
const socket = new Socket({
handle: clientHandle,
allowHalfOpen: self.allowHalfOpen,
pauseOnCreate: self.pauseOnConnect,
readable: true,
writable: true
});
if (self.noDelay && clientHandle.setNoDelay) {
clientHandle.setNoDelay(true);
}
if (self.keepAlive && clientHandle.setKeepAlive) {
clientHandle.setKeepAlive(true, self.keepAliveInitialDelay);
}
self._connections++;
socket.server = self;
socket._server = self;
DTRACE_NET_SERVER_CONNECTION(socket);
self.emit('connection', socket);
}
/**
* Gets the number of concurrent connections on the server
* @param {Function} cb
* @returns {Server}
*/
Server.prototype.getConnections = function(cb) {
const self = this;
function end(err, connections) {
defaultTriggerAsyncIdScope(self[async_id_symbol],
process.nextTick,
cb,
err,
connections);
}
if (!this._usingWorkers) {
end(null, this._connections);
return this;
}
// Poll workers
let left = this._workers.length;
let total = this._connections;
function oncount(err, count) {
if (err) {
left = -1;
return end(err);
}
total += count;
if (--left === 0) return end(null, total);
}
for (let n = 0; n < this._workers.length; n++) {
this._workers[n].getConnections(oncount);
}
return this;
};
Server.prototype.close = function(cb) {
if (typeof cb === 'function') {
if (!this._handle) {
this.once('close', function close() {
cb(new ERR_SERVER_NOT_RUNNING());
});
} else {
this.once('close', cb);
}
}
if (this._handle) {
this._handle.close();
this._handle = null;
}
if (this._usingWorkers) {
let left = this._workers.length;
const onWorkerClose = () => {
if (--left !== 0) return;
this._connections = 0;
this._emitCloseIfDrained();
};
// Increment connections to be sure that, even if all sockets will be closed
// during polling of workers, `close` event will be emitted only once.
this._connections++;
// Poll workers
for (let n = 0; n < this._workers.length; n++)
this._workers[n].close(onWorkerClose);
} else {
this._emitCloseIfDrained();
}
return this;
};
Server.prototype._emitCloseIfDrained = function() {
debug('SERVER _emitCloseIfDrained');
if (this._handle || this._connections) {
debug('SERVER handle? %j connections? %d',
!!this._handle, this._connections);
return;
}
defaultTriggerAsyncIdScope(this[async_id_symbol],
process.nextTick,
emitCloseNT,
this);
};
function emitCloseNT(self) {
debug('SERVER: emit close');
self.emit('close');
}
Server.prototype[EventEmitter.captureRejectionSymbol] = function(
err, event, sock) {
switch (event) {
case 'connection':
sock.destroy(err);
break;
default:
this.emit('error', err);
}
};
// Legacy alias on the C++ wrapper object. This is not public API, so we may
// want to runtime-deprecate it at some point. There's no hurry, though.
ObjectDefineProperty(TCP.prototype, 'owner', {
__proto__: null,
get() { return this[owner_symbol]; },
set(v) { return this[owner_symbol] = v; }
});
ObjectDefineProperty(Socket.prototype, '_handle', {
__proto__: null,
get() { return this[kHandle]; },
set(v) { return this[kHandle] = v; }
});
Server.prototype._setupWorker = function(socketList) {
this._usingWorkers = true;
this._workers.push(socketList);
socketList.once('exit', (socketList) => {
const index = ArrayPrototypeIndexOf(this._workers, socketList);
this._workers.splice(index, 1);
});
};
Server.prototype.ref = function() {
this._unref = false;
if (this._handle)
this._handle.ref();
return this;
};
Server.prototype.unref = function() {
this._unref = true;
if (this._handle)
this._handle.unref();
return this;
};
let _setSimultaneousAccepts;
let warnSimultaneousAccepts = true;
if (isWindows) {
let simultaneousAccepts;
_setSimultaneousAccepts = function(handle) {
if (warnSimultaneousAccepts) {
process.emitWarning(
'net._setSimultaneousAccepts() is deprecated and will be removed.',
'DeprecationWarning', 'DEP0121');
warnSimultaneousAccepts = false;
}
if (handle === undefined) {
return;
}
if (simultaneousAccepts === undefined) {
simultaneousAccepts = (process.env.NODE_MANY_ACCEPTS &&
process.env.NODE_MANY_ACCEPTS !== '0');
}
if (handle._simultaneousAccepts !== simultaneousAccepts) {
handle.setSimultaneousAccepts(!!simultaneousAccepts);
handle._simultaneousAccepts = simultaneousAccepts;
}
};
} else {
_setSimultaneousAccepts = function() {
if (warnSimultaneousAccepts) {
process.emitWarning(
'net._setSimultaneousAccepts() is deprecated and will be removed.',
'DeprecationWarning', 'DEP0121');
warnSimultaneousAccepts = false;
}
};
}
module.exports = {
_createServerHandle: createServerHandle,
_normalizeArgs: normalizeArgs,
_setSimultaneousAccepts,
get BlockList() {
BlockList ??= require('internal/blocklist').BlockList;
return BlockList;
},
get SocketAddress() {
SocketAddress ??= require('internal/socketaddress').SocketAddress;
return SocketAddress;
},
connect,
createConnection: connect,
createServer,
isIP: isIP,
isIPv4: isIPv4,
isIPv6: isIPv6,
Server,
Socket,
Stream: Socket, // Legacy naming
};
|