TCP \u4e2d\u7684\u7528\u6236\u7aef\u8207\u4f3a\u670d\u5668\u7aef<\/strong><\/h2>\n

\u4ec0\u9ebc\u662f\u7528\u6236\u7aef\uff1f<\/h3>\n

\u6bcf\u7576\u4f60\u60f3\u8981\u9023\u63a5\u5230\u7db2\u8def\u4e0a\u7684\u67d0\u500b\u670d\u52d9\u6216\u8cc7\u6e90\u6642\uff0c\u4f60\u5c31\u5728\u8207\u7528\u6236\u7aef\u6253\u4ea4\u9053\u3002\u7528\u6236\u7aef\u5728 TCP \u901a\u8a0a\u4e2d\u626e\u6f14\u767c\u8d77\u65b9\u7684\u89d2\u8272\u3002\u4f60\u4f7f\u7528\u7528\u6236\u7aef\u5411\u4f3a\u670d\u5668\u9001\u51fa\u8acb\u6c42\uff0c\u4e26\u671f\u671b\u7372\u5f97\u8cc7\u6599\u6216\u670d\u52d9\u4f5c\u70ba\u56de\u61c9\u3002\u7528\u6236\u7aef\u5728\u555f\u52d5\u9023\u7dda\u904e\u7a0b\uff0c\u4ee5\u53ca\u7ba1\u7406\u4f60\u7684\u88dd\u7f6e\u5982\u4f55\u900f\u904e TCP \u7b49\u5354\u5b9a\u8207\u5176\u4ed6\u88dd\u7f6e\u901a\u8a0a\u65b9\u9762\uff0c\u626e\u6f14\u8457\u95dc\u9375\u89d2\u8272\u3002<\/p>\n

\u5728 TCP \u901a\u8a0a\u4e2d\uff0c\u4f60\u5728\u7528\u6236\u7aef\u5074\u901a\u5e38\u6703\u57f7\u884c\u4ee5\u4e0b\u4e3b\u8981\u529f\u80fd\uff1a<\/p>\n

\n
• \u900f\u904e\u5411\u4f3a\u670d\u5668\u9001\u51fa\u8acb\u6c42\u4f86\u767c\u8d77\u901a\u8a0a\u3002<\/li>\n
• \u4f7f\u7528\u901a\u8a0a\u7aef\u5efa\u7acb\u9023\u7dda\uff0c\u9019\u662f TCP \u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u6b65\u3002<\/li>\n
• \u5728\u9001\u51fa\u8acb\u6c42\u5f8c\u7b49\u5f85\u4f3a\u670d\u5668\u7684\u56de\u61c9\u3002<\/li>\n<\/ul>\n

  \u7576\u4f60\u555f\u52d5\u4e00\u500b TCP \u9023\u7dda\u6642\uff0c\u6703\u9075\u5faa\u4e00\u500b\u7279\u5b9a\u7684\u6d41\u7a0b\u3002\u7528\u6236\u7aef\u9996\u5148\u5411\u4f3a\u670d\u5668\u9001\u51fa\u4e00\u500b SYN \u5c01\u5305\u4ee5\u958b\u59cb\u63e1\u624b\uff1b\u4f3a\u670d\u5668\u4ee5\u4e00\u500b SYN-ACK \u5c01\u5305\u56de\u61c9\uff1b\u96a8\u5f8c\u4f60\u518d\u5411\u4f3a\u670d\u5668\u9001\u51fa\u4e00\u500b ACK \u5c01\u5305\u3002\u9019\u500b\u904e\u7a0b\u78ba\u4fdd\u4f60\u7684\u88dd\u7f6e\u8207\u4f3a\u670d\u5668\u4e4b\u9593\u5efa\u7acb\u8d77\u4e00\u689d\u53ef\u9760\u7684\u9023\u7dda\u3002<\/p>\n

  \n\n\n\n<\/colgroup>\n\n\n\n\n\n

  \u6b65\u9a5f<\/th>\n	\u8aaa\u660e<\/th>\n<\/tr>\n
  1<\/td>\n	\u7528\u6236\u7aef\u5411\u4f3a\u670d\u5668\u9001\u51fa SYN \u5c01\u5305\u3002<\/td>\n<\/tr>\n
  2<\/td>\n	\u4f3a\u670d\u5668\u4ee5 SYN-ACK \u5c01\u5305\u56de\u61c9\u3002<\/td>\n<\/tr>\n
  3<\/td>\n	\u7528\u6236\u7aef\u518d\u5411\u4f3a\u670d\u5668\u9001\u51fa ACK \u5c01\u5305\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n \u4f60\u7d93\u5e38\u6703\u4f7f\u7528\u5982\u4e0b\u7a0b\u5f0f\u78bc\u4f86\u5efa\u7acb\u4e00\u500b TCP \u7528\u6236\u7aef\u9023\u7dda\uff1a<\/p>\n \n Socket s;\r\ntry {\r\n s = new Socket(dest, destport);\r\n}\r\ncatch(IOException ioe) {\r\n System.err.println(\"cannot connect to <\" + desthost + \",\" + destport + \">\");\r\n return;\r\n}\r\n<\/code><\/pre>\n<\/blockquote>\n \u9019\u6bb5\u7a0b\u5f0f\u78bc\u793a\u7bc4\u4e86\u4f60\u5982\u4f55\u5728\u771f\u5be6\u61c9\u7528\u4e2d\u5229\u7528 TCP \u901a\u8a0a\u7aef\u9023\u63a5\u5230\u4f3a\u670d\u5668\u3002<\/p>\n \u4ec0\u9ebc\u662f\u4f3a\u670d\u5668\u7aef\uff1f<\/h3>\n \u4f3a\u670d\u5668\u7aef\u5728\u7db2\u8def\u4e0a\u7b49\u5f85\u4f86\u81ea\u7528\u6236\u7aef\u7684\u50b3\u5165\u9023\u7dda\u3002\u4f60\u6703\u67b6\u8a2d\u4e00\u53f0\u4f3a\u670d\u5668\uff0c\u8b93\u5b83\u4f7f\u7528 TCP \u5354\u5b9a\u76e3\u807d\u8acb\u6c42\u4e26\u9032\u884c\u56de\u61c9\u3002\u4f3a\u670d\u5668\u7aef\u8ca0\u8cac\u7ba1\u7406\u591a\u500b\u9023\u7dda\uff0c\u4e26\u78ba\u4fdd\u6bcf\u500b\u7528\u6236\u7aef\u90fd\u80fd\u7372\u5f97\u6b63\u78ba\u7684\u56de\u61c9\u3002<\/p>\n \u5728\u67b6\u8a2d\u4e00\u500b TCP \u4f3a\u670d\u5668\u6642\uff0c\u4f60\u901a\u5e38\u6703\u9075\u5faa\u4ee5\u4e0b\u6b65\u9a5f\uff1a<\/p>\n \n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n \u6b65\u9a5f<\/th>\n \u8aaa\u660e<\/th>\n<\/tr>\n 1<\/td>\n \u4f7f\u7528 socket() \u51fd\u5f0f\u5efa\u7acb\u901a\u8a0a\u7aef\u3002<\/td>\n<\/tr>\n 2<\/td>\n \u4f7f\u7528 bind() \u51fd\u5f0f\u5c07\u901a\u8a0a\u7aef\u7e6b\u7d50\u5230\u67d0\u500b\u4f4d\u5740\u3002<\/td>\n<\/tr>\n 3<\/td>\n \u4f7f\u7528 listen() \u51fd\u5f0f\u76e3\u807d\u9023\u7dda\u3002<\/td>\n<\/tr>\n 4<\/td>\n \u4f7f\u7528 accept() \u7cfb\u7d71\u547c\u53eb\u63a5\u53d7\u9023\u7dda\u3002\u6b64\u547c\u53eb\u901a\u5e38\u6703\u88ab\u963b\u585e\uff0c\u76f4\u5230\u6709\u7528\u6236\u7aef\u8207\u4f3a\u670d\u5668\u5efa\u7acb\u9023\u7dda\u3002<\/td>\n<\/tr>\n 5<\/td>\n \u900f\u904e send() \u548c receive() \u50b3\u9001\u8207\u63a5\u6536\u8cc7\u6599\u3002<\/td>\n<\/tr>\n 6<\/td>\n \u900f\u904e close() \u51fd\u5f0f\u95dc\u9589\u9023\u7dda\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n \u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u4f60\u6703\u770b\u5230\u4f3a\u670d\u5668\u7aef\u4ee5\u4e0b\u5217\u65b9\u5f0f\u8655\u7406\u50b3\u5165\u7684 TCP \u9023\u7dda\u8acb\u6c42\uff1a<\/p>\n \n \u4f3a\u670d\u5668\u6301\u7e8c\u76e3\u807d\u4f86\u81ea\u7528\u6236\u7aef\u7684\u50b3\u5165\u9023\u7dda\u3002<\/li>\n \u4e00\u65e6\u7528\u6236\u7aef\u9023\u7dda\u6210\u529f\uff0c\u4f3a\u670d\u5668\u4fbf\u63a5\u53d7\u8a72\u9023\u7dda\u4e26\u70ba\u8a72\u7528\u6236\u7aef\u5efa\u7acb\u4e00\u500b\u5c08\u7528\u901a\u8a0a\u7aef\u3002<\/li>\n \u4f3a\u670d\u5668\u53ef\u4ee5\u900f\u904e\u70ba\u6bcf\u500b\u9023\u7dda\u5efa\u7acb\u4e00\u500b\u65b0\u57f7\u884c\u7dd2\u6216\u65b0\u5de5\u4f5c\u4f86\u540c\u6642\u8655\u7406\u591a\u500b\u7528\u6236\u7aef\u3002<\/li>\n \u8cc7\u6599\u900f\u904e\u7528\u6236\u7aef\u7684\u5c08\u7528\u901a\u8a0a\u7aef\u9032\u884c\u6536\u767c\uff0c\u5f9e\u800c\u5be6\u73fe\u9ad8\u6548\u901a\u8a0a\u3002<\/li>\n \u4e92\u52d5\u5b8c\u6210\u5f8c\uff0c\u4f3a\u670d\u5668\u6703\u6b63\u78ba\u95dc\u9589\u7528\u6236\u7aef\u7684\u901a\u8a0a\u7aef\u4ee5\u91cb\u653e\u8cc7\u6e90\u3002<\/li>\n<\/ul>\n \u4f60\u4ef0\u8cf4\u4f3a\u670d\u5668\u7aef\u4f86\u70ba\u7db2\u8def\u901a\u8a0a\u63d0\u4f9b\u7a69\u5b9a\u6027\u8207\u53ef\u9760\u6027\u3002\u4f3a\u670d\u5668\u5fc5\u9808\u56b4\u683c\u9075\u5b88 TCP \u5354\u5b9a\uff0c\u624d\u80fd\u4fdd\u8b49\u6bcf\u500b\u7528\u6236\u7aef\u90fd\u80fd\u63a5\u6536\u6e96\u78ba\u7684\u8cc7\u6599\u3002<\/p>\n \u95dc\u9375\u5dee\u7570<\/h3>\n \u4f60\u9700\u8981\u7406\u89e3 TCP \u901a\u8a0a\u4e2d\u7528\u6236\u7aef\u8207\u4f3a\u670d\u5668\u7aef\u4e4b\u9593\u7684\u5dee\u7570\u3002\u9019\u4e9b\u5dee\u7570\u80fd\u5e6b\u52a9\u4f60\u8a2d\u8a08\u66f4\u597d\u7684\u7db2\u8def\u61c9\u7528\u4e26\u6392\u67e5\u554f\u984c\u3002<\/p>\n \n\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n\n \u9762\u5411<\/th>\n \u7528\u6236\u7aef<\/th>\n \u4f3a\u670d\u5668\u7aef<\/th>\n<\/tr>\n \u89d2\u8272<\/td>\n \u767c\u8d77\u9023\u7dda<\/td>\n \u7b49\u5f85\u4e26\u63a5\u53d7\u9023\u7dda<\/td>\n<\/tr>\n \u4e3b\u8981\u52d5\u4f5c<\/td>\n \u767c\u9001\u8acb\u6c42<\/td>\n \u76e3\u807d\u4e26\u56de\u61c9\u8acb\u6c42<\/td>\n<\/tr>\n \u901a\u8a0a\u7aef\u4f7f\u7528<\/td>\n \u5efa\u7acb\u901a\u8a0a\u7aef\u4ee5\u9023\u63a5\u4f3a\u670d\u5668<\/td>\n \u5efa\u7acb\u901a\u8a0a\u7aef\u4ee5\u76e3\u807d\u7528\u6236\u7aef<\/td>\n<\/tr>\n \u9023\u7dda<\/td>\n \u767c\u8d77 TCP \u63e1\u624b<\/td>\n \u56de\u61c9\u63e1\u624b\u4e26\u7ba1\u7406\u9023\u7dda<\/td>\n<\/tr>\n \u5354\u5b9a\u4f7f\u7528<\/td>\n \u9075\u5faa TCP \u5354\u5b9a\u767c\u8d77\u8cc7\u6599\u8acb\u6c42<\/td>\n \u9075\u5faa TCP \u5354\u5b9a\u63d0\u4f9b\u8cc7\u6599<\/td>\n<\/tr>\n \u7db2\u8def\u5074\u91cd<\/td>\n \u8acb\u6c42\u8cc7\u6e90\u6216\u670d\u52d9<\/td>\n \u63d0\u4f9b\u8cc7\u6e90\u6216\u670d\u52d9<\/td>\n<\/tr>\n \u7bc4\u4f8b<\/td>\n \u700f\u89bd\u5668\u9023\u63a5\u5230\u7db2\u7ad9<\/td>\n \u8a17\u7ba1\u7db2\u7ad9\u7684 Web \u4f3a\u670d\u5668<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n \u63d0\u793a\uff1a\u5728\u5efa\u69cb\u7db2\u8def\u61c9\u7528\u6642\uff0c\u4e00\u5b9a\u8981\u5148\u6c7a\u5b9a\u54ea\u4e00\u90e8\u5206\u626e\u6f14\u7528\u6236\u7aef\u3001\u54ea\u4e00\u90e8\u5206\u626e\u6f14\u4f3a\u670d\u5668\u7aef\u3002\u9019\u500b\u6c7a\u5b9a\u6703\u5f71\u97ff\u4f60\u5982\u4f55\u64b0\u5beb\u7a0b\u5f0f\u78bc\u4ee5\u53ca\u61c9\u7528\u5728\u7db2\u8def\u4e2d\u7684\u5be6\u969b\u884c\u70ba\u3002<\/p><\/blockquote>\n \u53ef\u4ee5\u770b\u5230\uff0c\u7528\u6236\u7aef\u8207\u4f3a\u670d\u5668\u7aef\u90fd\u4f7f\u7528 TCP \u5354\u5b9a\uff0c\u4f46\u5b83\u5011\u626e\u6f14\u7684\u89d2\u8272\u4e0d\u540c\uff1a\u7528\u6236\u7aef\u8ca0\u8cac\u300c\u958b\u53e3\u8aaa\u8a71\u300d\uff0c\u4f3a\u670d\u5668\u7aef\u8ca0\u8cac\u300c\u7b49\u5f85\u4e26\u56de\u7b54\u300d\u3002\u96d9\u65b9\u90fd\u5fc5\u9808\u9075\u5b88\u5354\u5b9a\uff0c\u624d\u80fd\u78ba\u4fdd\u7db2\u8def\u901a\u8a0a\u9806\u66a2\u53ef\u9760\u3002<\/p>\n TCP \u9023\u7dda\u904e\u7a0b<\/strong><\/h2>\n TCP \u9023\u7dda\u5982\u4f55\u958b\u59cb<\/h3>\n \u4f60\u8981\u555f\u52d5\u4e00\u500b TCP \u9023\u7dda\uff0c\u9700\u8981\u5148\u8b93\u7528\u6236\u7aef\u8207\u4f3a\u670d\u5668\u90fd\u70ba\u901a\u8a0a\u505a\u597d\u6e96\u5099\u3002\u4f3a\u670d\u5668\u5fc5\u9808\u5148\u5c31\u7dd2\uff0c\u7136\u5f8c\u7528\u6236\u7aef\u518d\u5617\u8a66\u9023\u7dda\u3002\u4f60\u900f\u904e\u901a\u8a0a\u7aef\u7a0b\u5f0f\u8a2d\u8a08\u5efa\u7acb\u4f3a\u670d\u5668\u901a\u8a0a\u7aef\u3002\u4f3a\u670d\u5668\u900f\u904e\u5efa\u7acb\u901a\u8a0a\u7aef\u3001\u5c07\u5176\u7e6b\u7d50\u5230\u4f4d\u5740\u8207\u9023\u63a5\u57e0\u4e26\u958b\u59cb\u76e3\u807d\uff0c\u4f86\u57f7\u884c\u88ab\u52d5\u958b\u555f\uff08passive open\uff09\u3002\u9019\u500b\u904e\u7a0b\u901a\u5e38\u88ab\u7a31\u70ba\u4f3a\u670d\u5668\u76e3\u807d\u3002\u4f3a\u670d\u5668\u901a\u8a0a\u7aef\u96a8\u5f8c\u6703\u7b49\u5f85\u7528\u6236\u7aef\u9023\u7dda\u3002<\/p>\n \u7576\u4f60\u4f7f\u7528\u7528\u6236\u7aef\u901a\u8a0a\u7aef\u6642\uff0c\u4f60\u6703\u767c\u8d77\u4e00\u500b\u4e3b\u52d5\u958b\u555f\uff08active open\uff09\u3002\u4f60\u5411\u4f3a\u670d\u5668\u9001\u51fa\u9023\u7dda\u8acb\u6c42\u4ee5\u555f\u52d5\u9023\u7dda\u3002\u7528\u6236\u7aef\u900f\u904e\u5efa\u7acb\u901a\u8a0a\u7aef\u4f86\u5b8c\u6210\u901a\u8a0a\u7aef\u5efa\u7acb\uff08socket creation\uff09\uff0c\u7136\u5f8c\u5617\u8a66\u9023\u63a5\u5230\u4f3a\u670d\u5668\u7684\u4f4d\u5740\u8207\u9023\u63a5\u57e0\u3002\u4f60\u4ef0\u8cf4 TCP \u5354\u5b9a\u4f86\u7ba1\u7406\u9019\u500b\u904e\u7a0b\uff0c\u4e26\u78ba\u4fdd\u901a\u8a0a\u53ef\u9760\u3002<\/p>\n \u4f3a\u670d\u5668\u7d93\u5e38\u6703\u767c\u51fa\u8af8\u5982 OPEN\u3001USE \u548c READ \u4e4b\u985e\u7684\u6307\u4ee4\u4f86\u8655\u7406\u9023\u7dda\u3002\u9019\u4e9b\u6307\u4ee4\u5354\u52a9\u4f3a\u670d\u5668\u7ba1\u7406\u901a\u8a0a\u7aef\uff0c\u4e26\u70ba\u50b3\u5165\u7684\u4f4d\u5143\u7d44\u4e32\u6d41\u505a\u597d\u6e96\u5099\u3002\u7576\u4f60\u64b0\u5beb\u57fa\u65bc TCP \u901a\u8a0a\u7aef\u7684\u7db2\u8def\u61c9\u7528\u6642\uff0c\u5c31\u80fd\u770b\u5230\u9019\u4e9b\u6b65\u9a5f\u3002<\/p>\n \u63d0\u793a\uff1a\u5fc5\u9808\u5148\u6709\u4f3a\u670d\u5668\u5728\u76e3\u807d\uff0c\u7528\u6236\u7aef\u624d\u80fd\u9023\u7dda\u3002\u5982\u679c\u4f3a\u670d\u5668\u6c92\u6709\u5728\u76e3\u807d\uff0c\u7528\u6236\u7aef\u5c31\u7121\u6cd5\u5efa\u7acb TCP \u9023\u7dda\u3002<\/p><\/blockquote>\n \u4e09\u5411\u4ea4\u63e1\u6b65\u9a5f<\/h3>\n \u4f60\u6703\u4f7f\u7528 TCP \u5354\u5b9a\u900f\u904e\u300c\u4e09\u5411\u4ea4\u63e1\u300d\uff08\u4e09\u6b21\u63e1\u624b\uff09\u4f86\u5efa\u7acb\u9023\u7dda\u3002\u63e1\u624b\u80fd\u78ba\u4fdd\u7528\u6236\u7aef\u8207\u4f3a\u670d\u5668\u90fd\u540c\u610f\u901a\u8a0a\uff0c\u4e26\u5efa\u7acb\u4e00\u500b\u53ef\u9760\u7684\u8cc7\u6599\u50b3\u8f38\u901a\u9053\u3002\u4f60\u6703\u9075\u5faa\u4ee5\u4e0b\u6b65\u9a5f\uff1a<\/p>\n \n \u7528\u6236\u7aef\u5411\u4f3a\u670d\u5668\u9001\u51fa\u4e00\u500b\u5e36\u6709\u96a8\u6a5f\u5e8f\u5217\u865f\u7684 SYN \u5c01\u5305\uff0c\u7528\u4f86\u8868\u660e\u8981\u767c\u8d77\u9023\u7dda\u3002<\/li>\n \u4f3a\u670d\u5668\u56de\u8986\u4e00\u500b SYN-ACK \u5c01\u5305\uff0cSYN \u90e8\u5206\u63d0\u4f9b\u4f3a\u670d\u5668\u7684\u5e8f\u5217\u865f\uff0cACK \u90e8\u5206\u5247\u5c0d\u7528\u6236\u7aef\u7684 SYN \u9032\u884c\u78ba\u8a8d\u3002<\/li>\n \u7528\u6236\u7aef\u518d\u5411\u4f3a\u670d\u5668\u9001\u51fa\u4e00\u500b ACK \u5c01\u5305\uff0c\u78ba\u8a8d\u5df2\u6536\u5230\u4f3a\u670d\u5668\u9001\u51fa\u7684 SYN-ACK\u3002<\/li>\n<\/ol>\n \u5b8c\u6210\u9019\u4e9b\u6b65\u9a5f\u5f8c\uff0cTCP \u9023\u7dda\u5c31\u5efa\u7acb\u597d\u4e86\u3002\u6b64\u6642\u4f60\u53ef\u4ee5\u4f7f\u7528\u901a\u8a0a\u7aef\u5728\u7528\u6236\u7aef\u8207\u4f3a\u670d\u5668\u4e4b\u9593\u50b3\u9001\u8207\u63a5\u6536\u8cc7\u6599\u3002\u900f\u904e\u63e1\u624b\uff0c\u96d9\u65b9\u9084\u80fd\u5354\u5546\u8996\u7a97\u5927\u5c0f\u3001\u6700\u5927\u5c01\u5305\u9577\u5ea6\uff08MSS\uff09\u7b49\u53c3\u6578\u3002\u4f60\u5728\u9032\u884c\u901a\u8a0a\u7aef\u7a0b\u5f0f\u8a2d\u8a08\u6642\uff0c\u6703\u4f9d\u9760\u9019\u500b\u904e\u7a0b\u4f86\u5be6\u73fe\u96d9\u5411\u901a\u8a0a\u3002<\/p>\n \n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n TCP \u72c0\u614b<\/th>\n \u8aaa\u660e<\/th>\n<\/tr>\n CLOSED<\/td>\n \u5c1a\u672a\u958b\u59cb\u4efb\u4f55 TCP \u6d3b\u52d5\u3002<\/td>\n<\/tr>\n LISTEN<\/td>\n \u4f3a\u670d\u5668\u6b63\u5728\u7b49\u5f85\u9023\u7dda\u8acb\u6c42\u3002<\/td>\n<\/tr>\n SYN-SENT<\/td>\n \u7528\u6236\u7aef\u9001\u51fa SYN \u4e4b\u5f8c\uff0c\u6b63\u5728\u7b49\u5f85 ACK\u3002<\/td>\n<\/tr>\n SYN+ACK SENT<\/td>\n \u4f3a\u670d\u5668\u9001\u51fa\u5c0d SYN \u7684 ACK\uff0c\u540c\u6642\u9001\u51fa\u81ea\u5df1\u7684 SYN \u8acb\u6c42\u3002<\/td>\n<\/tr>\n SYN RCVD<\/td>\n \u4f3a\u670d\u5668\u5df2\u63a5\u6536\u5230\u5c0d\u5176\u5148\u524d\u9001\u51fa ACK \u6240\u5c0d\u61c9\u7684 SYN\u3002<\/td>\n<\/tr>\n ESTABLISHED<\/td>\n \u63e1\u624b\u5b8c\u6210\uff0c\u53ef\u4ee5\u958b\u59cb\u50b3\u8f38\u8cc7\u6599\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n \u4f60\u900f\u904e\u901a\u8a0a\u7aef\u5728\u7528\u6236\u7aef\u8207\u4f3a\u670d\u5668\u4e4b\u9593\u5efa\u7acb\u4e00\u689d\u4f4d\u5143\u7d44\u4e32\u6d41\u3002TCP \u901a\u8a0a\u7aef\u53ef\u4ee5\u8b93\u4f60\u5728\u96d9\u5411\u90fd\u6536\u767c\u8cc7\u6599\u3002\u9019\u4e00\u904e\u7a0b\u69cb\u6210\u4e86\u7db2\u8def\u7a0b\u5f0f\u8a2d\u8a08\u7684\u57fa\u790e\uff0c\u4f7f\u4f60\u80fd\u5920\u5efa\u69cb\u53ef\u9760\u7684\u61c9\u7528\u7a0b\u5f0f\u3002<\/p>\n \u6ce8\u610f\uff1a\u4e09\u5411\u4ea4\u63e1\u662f\u5efa\u7acb TCP \u9023\u7dda\u7684\u95dc\u9375\u6b65\u9a5f\u3002\u6c92\u6709\u9019\u500b\u904e\u7a0b\uff0c\u4f60\u5c31\u7121\u6cd5\u4fdd\u8b49\u88dd\u7f6e\u4e4b\u9593\u7684\u8cc7\u6599\u50b3\u8f38\u662f\u53ef\u9760\u7684\u3002<\/p><\/blockquote>\n \u9023\u7dda\u7d42\u6b62<\/h3>\n \u4f60\u5fc5\u9808\u6b63\u78ba\u5730\u95dc\u9589 TCP \u9023\u7dda\uff0c\u624d\u80fd\u907f\u514d\u8cc7\u6e90\u6d29\u6f0f\u4e26\u78ba\u4fdd\u901a\u8a0a\u4e7e\u6de8\u4fd0\u843d\u3002TCP \u5354\u5b9a\u4f7f\u7528\u300c\u56db\u6b21\u63ee\u624b\u300d\u4f86\u7d42\u6b62\u9023\u7dda\u3002\u4f60\u6703\u9075\u5faa\u4ee5\u4e0b\u6b65\u9a5f\uff1a<\/p>\n \n \u7528\u6236\u7aef\u5411\u4f3a\u670d\u5668\u9001\u51fa FIN \u5c01\u5305\uff0c\u8868\u793a\u81ea\u5df1\u4e0d\u518d\u50b3\u9001\u8cc7\u6599\u3002\u7528\u6236\u7aef\u9032\u5165 FIN-WAIT-1 \u72c0\u614b\u3002<\/li>\n \u4f3a\u670d\u5668\u4ee5 ACK \u78ba\u8a8d\u9019\u500b FIN\uff0c\u4e26\u9032\u5165 CLOSE-WAIT \u72c0\u614b\u3002<\/li>\n \u4f3a\u670d\u5668\u5728\u5b8c\u6210\u5269\u9918\u8cc7\u6599\u50b3\u9001\u5f8c\uff0c\u518d\u9001\u51fa\u81ea\u5df1\u7684 FIN \u5c01\u5305\uff0c\u4e26\u9032\u5165 LAST-ACK \u72c0\u614b\u3002<\/li>\n \u7528\u6236\u7aef\u4ee5\u6700\u5f8c\u4e00\u500b ACK \u78ba\u8a8d\u4f3a\u670d\u5668\u7684 FIN\uff0c\u4e26\u9032\u5165 TIME-WAIT \u72c0\u614b\u3002\u903e\u6642\u7d50\u675f\u5f8c\uff0c\u9023\u7dda\u5373\u88ab\u5b8c\u5168\u95dc\u9589\u3002<\/li>\n<\/ol>\n \u7576\u4f60\u95dc\u9589\u901a\u8a0a\u7aef\u3001\u7d50\u675f\u8cc7\u6599\u50b3\u8f38\u6642\uff0c\u5c31\u6703\u770b\u5230\u9019\u4e00\u904e\u7a0b\u3002TCP \u901a\u8a0a\u7aef\u6703\u78ba\u4fdd\u96d9\u65b9\u90fd\u5df2\u5b8c\u6210\u8cc7\u6599\u7684\u6536\u767c\uff0c\u7136\u5f8c\u624d\u95dc\u9589\u9023\u7dda\u3002\u5728\u7db2\u8def\u7a0b\u5f0f\u8a2d\u8a08\u4e2d\uff0c\u4f60\u5fc5\u9808\u8b39\u614e\u8655\u7406\u9023\u7dda\u7d42\u6b62\uff0c\u4ee5\u7dad\u8b77\u6574\u9ad4\u7db2\u8def\u7684\u7a69\u5b9a\u6027\u3002<\/p>\n \n\n\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n \u6b65\u9a5f<\/th>\n \u89d2\u8272<\/th>\n \u52d5\u4f5c\u8aaa\u660e<\/th>\n \u72c0\u614b\u8b8a\u5316<\/th>\n<\/tr>\n 1<\/td>\n \u7528\u6236\u7aef<\/td>\n \u9001\u51fa FIN \u5c01\u5305\uff0c\u8868\u793a\u4e0d\u518d\u50b3\u9001\u66f4\u591a\u8cc7\u6599\u3002<\/td>\n \u9032\u5165 FIN-WAIT-1<\/td>\n<\/tr>\n 2<\/td>\n \u4f3a\u670d\u5668<\/td>\n \u4ee5 ACK \u5c01\u5305\u78ba\u8a8d\u6536\u5230 FIN\u3002<\/td>\n \u9032\u5165 CLOSE-WAIT<\/td>\n<\/tr>\n 3<\/td>\n \u4f3a\u670d\u5668<\/td>\n \u5728\u5b8c\u6210\u5269\u9918\u8cc7\u6599\u50b3\u8f38\u5f8c\uff0c\u9001\u51fa\u81ea\u5df1\u7684 FIN\u3002<\/td>\n \u9032\u5165 LAST-ACK<\/td>\n<\/tr>\n 4<\/td>\n \u7528\u6236\u7aef<\/td>\n \u4ee5\u6700\u5f8c\u4e00\u500b ACK \u78ba\u8a8d\u4f3a\u670d\u5668\u7684 FIN\u3002<\/td>\n \u9032\u5165 TIME-WAIT<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n \n TCP \u9023\u7dda\u7d42\u6b62\u4f7f\u7528\u56db\u6b65\u63e1\u624b\uff08FIN\u2013ACK \u4ea4\u63db\uff09\u3002<\/li>\n \u6bcf\u4e00\u7aef\u90fd\u53ef\u4ee5\u900f\u904e FIN \u65d7\u6a19\u7368\u7acb\u91cb\u653e\u81ea\u5df1\u7684\u9023\u7dda\u65b9\u5411\u3002<\/li>\n \u6b64\u904e\u7a0b\u78ba\u4fdd\u96d9\u65b9\u5728\u5b8c\u5168\u7d50\u675f\u8cc7\u6599\u50b3\u8f38\u5f8c\u624d\u5fb9\u5e95\u95dc\u9589\u9023\u7dda\u3002<\/li>\n<\/ul>\n \u63d0\u9192\uff1a\u5728\u5b8c\u6210\u8cc7\u6599\u50b3\u8f38\u5f8c\uff0c\u4e00\u5b9a\u8981\u95dc\u9589\u901a\u8a0a\u7aef\u3002\u9019\u6a23\u80fd\u9632\u6b62\u8cc7\u6e90\u6d29\u6f0f\uff0c\u8b93\u4f60\u7684\u7db2\u8def\u61c9\u7528\u6301\u7e8c\u7a69\u5b9a\u904b\u4f5c\u3002<\/p><\/blockquote>\n \u4f60\u900f\u904e TCP \u901a\u8a0a\u7aef\u50b3\u9001\u8207\u63a5\u6536\u4f4d\u5143\u7d44\u4e32\u6d41\u3002TCP \u5354\u5b9a\u5f9e\u5efa\u7acb\u9023\u7dda\u5230\u7d42\u6b62\u9023\u7dda\u5168\u7a0b\u8ca0\u8cac\u7ba1\u7406\uff0c\u5305\u62ec\u63e1\u624b\u8207\u95dc\u9589\u904e\u7a0b\u3002\u4f60\u4ef0\u8cf4\u9019\u4e9b\u6b65\u9a5f\u5efa\u69cb\u5065\u58ef\u7684\u7db2\u8def\u61c9\u7528\uff0c\u4e26\u8655\u7406\u88dd\u7f6e\u4e4b\u9593\u7684\u901a\u8a0a\u3002<\/p>\n TCP \u7528\u6236\u7aef\u8207 TCP \u4f3a\u670d\u5668\u7684\u89d2\u8272<\/strong><\/h2>\n TCP \u7528\u6236\u7aef\u7684\u8077\u8cac<\/h3>\n \u7576\u4f60\u5728\u7db2\u8def\u4e2d\u626e\u6f14\u7528\u6236\u7aef\u6642\uff0c\u9700\u8981\u627f\u64d4\u591a\u9805\u91cd\u8981\u8077\u8cac\uff0c\u4ee5\u78ba\u4fdd\u8207\u4f3a\u670d\u5668\u4e4b\u9593\u7684\u901a\u8a0a\u9806\u66a2\u3002\u4f60\u7684\u4e3b\u8981\u4efb\u52d9\u662f\u7ba1\u7406\u9023\u7dda\uff0c\u4e26\u4fdd\u8b49\u8cc7\u6599\u5728\u88dd\u7f6e\u4e4b\u9593\u53ef\u9760\u50b3\u8f38\u3002\u5178\u578b\u7684\u7528\u6236\u7aef\u8077\u8cac\u5305\u62ec\uff1a<\/p>\n \n \u900f\u904e\u4e09\u5411\u4ea4\u63e1\u8207\u4f3a\u670d\u5668\u5efa\u7acb\u9023\u7dda\u3002<\/li>\n \u7ba1\u7406\u4f60\u7684\u88dd\u7f6e\u8207\u4f3a\u670d\u5668\u4e4b\u9593\u7684\u8cc7\u6599\u6d41\u3002<\/li>\n \u900f\u904e\u932f\u8aa4\u6aa2\u67e5\u8207\u91cd\u50b3\u6a5f\u5236\u4f86\u78ba\u4fdd\u8cc7\u6599\u5c01\u5305\u53ef\u9760\u9001\u9054\u3002<\/li>\n \u4f9d\u7167\u6b63\u78ba\u6b65\u9a5f\u7d42\u6b62\u9023\u7dda\uff0c\u4e26\u9032\u5165 FIN_WAIT_1\u3001FIN_WAIT_2 \u8207 TIME_WAIT \u7b49\u72c0\u614b\u3002<\/li>\n<\/ol>\n \u4f60\u9084\u9700\u8981\u5728\u901a\u8a0a\u904e\u7a0b\u4e2d\u7ba1\u7406\u8cc7\u6599\u6d41\u8207\u932f\u8aa4\u8655\u7406\u3002\u4e0b\u8868\u5c55\u793a\u4e86\u4f60\u5728\u5404\u500b\u968e\u6bb5\u7684\u8655\u7406\u65b9\u5f0f\uff1a<\/p>\n \n\n\n\n<\/colgroup>\n\n\n\n\n\n\n \u6b65\u9a5f<\/th>\n \u8aaa\u660e<\/th>\n<\/tr>\n \u5efa\u7acb\u9023\u7dda<\/td>\n \u4f60\u900f\u904e SYN\u3001SYN-ACK \u8207 ACK \u4e09\u5411\u4ea4\u63e1\u4f86\u555f\u52d5\u901a\u8a0a\u3002<\/td>\n<\/tr>\n \u8cc7\u6599\u50b3\u8f38<\/td>\n \u4f60\u5c0d\u8cc7\u6599\u9032\u884c\u5206\u6bb5\u3001\u7de8\u865f\u3001\u50b3\u9001\u3001\u63a5\u6536\u8207\u78ba\u8a8d\uff0c\u78ba\u4fdd\u5176\u6b63\u78ba\u9001\u9054\u3002<\/td>\n<\/tr>\n \u6d41\u91cf\u63a7\u5236<\/td>\n \u4f60\u900f\u904e\u8996\u7a97\u5927\u5c0f\u8207\u6ed1\u52d5\u8996\u7a97\u6280\u8853\u4f86\u8abf\u7bc0\u8cc7\u6599\u50b3\u9001\u901f\u7387\u3002<\/td>\n<\/tr>\n \u932f\u8aa4\u8655\u7406<\/td>\n \u4f60\u4f7f\u7528\u6aa2\u67e5\u78bc\uff08checksum\uff09\u3001\u91cd\u50b3\u4ee5\u53ca\u91cd\u8907\u5075\u6e2c\u7b49\u6a5f\u5236\u4f86\u4fdd\u8b49\u8cc7\u6599\u6b63\u78ba\u6027\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n \u63d0\u793a\uff1a\u6642\u523b\u7559\u610f\u4f60\u7684\u901a\u8a0a\u7aef\u72c0\u614b\u8207\u8cc7\u6599\u6d41\u91cf\uff0c\u4ee5\u78ba\u4fdd\u7db2\u8def\u901a\u8a0a\u7684\u53ef\u9760\u6027\u3002<\/p><\/blockquote>\n TCP \u4f3a\u670d\u5668\u7684\u8077\u8cac<\/h3>\n \u4f5c\u70ba\u4f3a\u670d\u5668\uff0c\u4f60\u5728\u7db2\u8def\u4e2d\u8655\u65bc\u6838\u5fc3\u4f4d\u7f6e\u3002\u4f60\u5fc5\u9808\u8b93\u901a\u8a0a\u7aef\u8655\u65bc\u53ef\u63a5\u53d7\u9023\u7dda\u7684\u72c0\u614b\uff0c\u4e26\u80fd\u540c\u6642\u7ba1\u7406\u591a\u500b\u7528\u6236\u7aef\u3002\u4f3a\u670d\u5668\u7684\u4e3b\u8981\u8077\u8cac\u5305\u62ec\uff1a<\/p>\n \n \u5efa\u7acb\u901a\u8a0a\u7aef\u7528\u65bc\u76e3\u807d\u50b3\u5165\u9023\u7dda\u3002<\/li>\n \u5c07\u901a\u8a0a\u7aef\u7e6b\u7d50\u5230\u7279\u5b9a IP \u4f4d\u5740\u8207\u9023\u63a5\u57e0\u3002<\/li>\n \u76e3\u807d\u4f86\u81ea\u7528\u6236\u7aef\u7684\u9023\u7dda\u8acb\u6c42\u3002<\/li>\n \u63a5\u53d7\u9023\u7dda\u4e26\u70ba\u6bcf\u500b\u7528\u6236\u7aef\u5efa\u7acb\u65b0\u7684\u901a\u8a0a\u7aef\u3002<\/li>\n \u5728\u4f3a\u670d\u5668\u8207\u5404\u7528\u6236\u7aef\u4e4b\u9593\u50b3\u8f38\u8cc7\u6599\u3002<\/li>\n \u5728\u8cc7\u6599\u50b3\u8f38\u5b8c\u6210\u5f8c\uff0c\u512a\u96c5\u5730\u95dc\u9589\u9023\u7dda\u3002<\/li>\n<\/ol>\n \u4f60\u4e5f\u6703\u4f7f\u7528\u591a\u7a2e\u6a5f\u5236\u4f86\u7dad\u6301\u901a\u8a0a\u53ef\u9760\u4e26\u7ba1\u7406\u8cc7\u6e90\uff1a<\/p>\n \n\n\n\n<\/colgroup>\n\n\n\n\n\n\n \u6a5f\u5236<\/th>\n \u8aaa\u660e<\/th>\n<\/tr>\n \u9023\u7dda\u5efa\u7acb<\/td>\n \u4f60\u900f\u904e\u4e09\u5411\u4ea4\u63e1\uff0c\u78ba\u4fdd\u96d9\u65b9\u90fd\u5df2\u6e96\u5099\u597d\u9032\u884c\u901a\u8a0a\u3002<\/td>\n<\/tr>\n \u6d41\u91cf\u63a7\u5236<\/td>\n \u4f60\u900f\u904e\u6ed1\u52d5\u8996\u7a97\u5354\u5b9a\u7ba1\u7406\u8cc7\u6599\u6d41\uff0c\u9632\u6b62\u5c0d\u7aef\u904e\u8f09\u3002<\/td>\n<\/tr>\n \u932f\u8aa4\u6821\u6b63<\/td>\n \u4f60\u6aa2\u67e5\u4e26\u66f4\u6b63\u932f\u8aa4\uff0c\u4ee5\u78ba\u4fdd\u8cc7\u6599\u6e96\u78ba\u7121\u8aa4\u3002<\/td>\n<\/tr>\n \u58c5\u585e\u63a7\u5236<\/td>\n \u4f60\u4f7f\u7528\u5404\u7a2e\u6f14\u7b97\u6cd5\u907f\u514d\u7db2\u8def\u58c5\u585e\uff0c\u7dad\u6301\u8cc7\u6599\u9ad8\u6548\u50b3\u8f38\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n \u5178\u578b\u4e92\u52d5\u60c5\u5883<\/h3>\n \u5728\u771f\u5be6\u61c9\u7528\u4e2d\uff0c\u7528\u6236\u7aef\u8207\u4f3a\u670d\u5668\u4e4b\u9593\u7684\u4e92\u52d5\u60c5\u5883\u975e\u5e38\u591a\u6a23\u3002\u4f8b\u5982\uff0cDHCP \u7528\u6236\u7aef\u5728\u52a0\u5165\u7db2\u8def\u6642\u6703\u5411 DHCP \u4f3a\u670d\u5668\u8acb\u6c42 IP \u4f4d\u5740\uff1bHTTP \u7528\u6236\u7aef\u6703\u5b9a\u671f\u5411 Web \u4f3a\u670d\u5668\u67e5\u8a62\u66f4\u65b0\uff0c\u4f8b\u5982\u63a7\u5236\u5bb6\u4e2d\u7684\u667a\u6167\u88dd\u7f6e\u3002\u6709\u6642\uff0c\u540c\u4e00\u53f0\u88dd\u7f6e\u65e2\u53ef\u4ee5\u662f\u7528\u6236\u7aef\uff0c\u53c8\u53ef\u4ee5\u662f\u4f3a\u670d\u5668\uff0c\u4f8b\u5982\u67d0\u584a\u63a7\u5236\u677f\u540c\u6642\u8a17\u7ba1\u8a2d\u5b9a\u9801\u9762\uff0c\u53c8\u5411\u5176\u4ed6\u4f3a\u670d\u5668\u53d6\u5f97\u66f4\u65b0\u3002<\/p>\n TCP \u5141\u8a31\u7528\u6236\u7aef\u8207\u4f3a\u670d\u5668\u540c\u6642\u9032\u884c\u8cc7\u6599\u6536\u767c\u3002\u6bcf\u4e00\u65b9\u90fd\u6703\u7dad\u8b77\u81ea\u5df1\u7684\u5e8f\u5217\u865f\uff0c\u56e0\u6b64\u4f60\u53ef\u4ee5\u9032\u884c\u96d9\u5411\u901a\u8a0a\u800c\u4e0d\u6703\u641e\u6df7\u8cc7\u6599\u6d41\u3002<\/p>\n \u4f60\u5e38\u5e38\u6703\u767c\u73fe\uff0c\u4f3a\u670d\u5668\u5728\u5b8c\u6210\u67d0\u500b\u64cd\u4f5c\u5f8c\u6703\u4e3b\u52d5\u4e2d\u65b7\u7528\u6236\u7aef\u9023\u7dda\u4ee5\u7bc0\u7701\u983b\u5bec\u3002\u9019\u7a2e\u505a\u6cd5\u80fd\u5927\u5e45\u63d0\u5347\u7db2\u8def\u6548\u7387\uff0c\u7279\u5225\u662f\u5728\u5927\u91cf\u88dd\u7f6e\u540c\u6642\u9023\u7dda\u6642\u3002<\/p>\n TCP \u7528\u6236\u7aef\u8207\u4f3a\u670d\u5668\u7bc4\u4f8b<\/strong><\/h2>\n \u7c21\u55ae\u7684 TCP \u7528\u6236\u7aef\u7a0b\u5f0f\u78bc<\/h3>\n \u4f60\u53ef\u4ee5\u5f9e\u5efa\u7acb\u4e00\u500b\u57fa\u790e\u7684\u7528\u6236\u7aef\u901a\u8a0a\u7aef\u4f86\u5165\u9580\u901a\u8a0a\u7aef\u7a0b\u5f0f\u8a2d\u8a08\u3002\u8a72\u7528\u6236\u7aef\u6703\u9023\u63a5\u5230\u4f3a\u670d\u5668\u901a\u8a0a\u7aef\u4e26\u8b80\u53d6\u4f4d\u5143\u7d44\u4e32\u6d41\u3002\u4f60\u900f\u904e\u901a\u8a0a\u7aef\u5efa\u7acb\uff08socket creation\uff09\u4f86\u5efa\u7acb\u9023\u7dda\uff0c\u7528\u6236\u7aef\u9001\u51fa\u8acb\u6c42\u4e26\u63a5\u6536\u4f86\u81ea\u4f3a\u670d\u5668\u7684\u8cc7\u6599\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7bc4\u4f8b\uff1a<\/p>\n \u4e00\u500b\u7c21\u55ae TCP \u7528\u6236\u7aef\u7684\u95dc\u9375\u7d44\u6210\u90e8\u5206\u5305\u62ec\uff1a<\/p>\n \n \u5efa\u7acb TcpClient \u57f7\u884c\u500b\u9ad4\u3002<\/li>\n \u4f7f\u7528 ConnectAsync \u9023\u63a5\u5230\u4f3a\u670d\u5668\u3002<\/li>\n \u900f\u904e NetworkStream \u8b80\u53d6\u8cc7\u6599\u3002<\/li>\n<\/ol>\n var ipEndPoint = new IPEndPoint(ipAddress, 13);\r\nusing TcpClient client = new();\r\nawait client.ConnectAsync(ipEndPoint);\r\nawait using NetworkStream stream = client.GetStream();\r\nvar buffer = new byte[1_024];\r\nint received = await stream.ReadAsync(buffer);\r\nvar message = Encoding.UTF8.GetString(buffer, 0, received);\r\nConsole.WriteLine($\"Message received: \\\"{message}\\\"\");\r\n<\/code><\/pre>\n<\/blockquote>\n \u4f60\u5efa\u7acb\u4e00\u500b\u901a\u8a0a\u7aef\uff0c\u9023\u63a5\u5230\u4f3a\u670d\u5668\uff0c\u7136\u5f8c\u5f9e\u4e32\u6d41\u4e2d\u8b80\u53d6\u4f4d\u5143\u7d44\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528\u8a72\u4e32\u6d41\u7269\u4ef6\u4f86\u50b3\u9001\u8207\u63a5\u6536\u8cc7\u6599\u3002\u9019\u500b\u904e\u7a0b\u69cb\u6210\u4e86\u7db2\u8def\u7a0b\u5f0f\u8a2d\u8a08\u7684\u57fa\u790e\u3002<\/p>\n \u7c21\u55ae\u7684 TCP \u4f3a\u670d\u5668\u7a0b\u5f0f\u78bc<\/h3>\n \u4f60\u53ef\u4ee5\u900f\u904e\u5efa\u7acb\u4f3a\u670d\u5668\u901a\u8a0a\u7aef\u4e26\u76e3\u807d\u50b3\u5165\u9023\u7dda\u4f86\u67b6\u8a2d\u4e00\u500b TCP \u4f3a\u670d\u5668\u3002\u4f3a\u670d\u5668\u901a\u8a0a\u7aef\u6703\u7b49\u5f85\u7528\u6236\u7aef\u9023\u7dda\uff0c\u4f60\u53ef\u4ee5\u70ba\u6bcf\u500b\u7528\u6236\u7aef\u555f\u52d5\u4e00\u500b\u65b0\u57f7\u884c\u7dd2\u4e26\u5411\u5176\u50b3\u9001\u4f4d\u5143\u7d44\u3002\u57fa\u672c\u6b65\u9a5f\u5982\u4e0b\uff1a<\/p>\n \n \u532f\u5165\u7db2\u8def\u8207\u4e26\u884c\u8655\u7406\u76f8\u95dc\u7684\u5fc5\u8981\u7a0b\u5f0f\u5eab\u3002<\/li>\n \u4f7f\u7528 TcpListener \u7e6b\u7d50\u4f4d\u5740\u4e26\u76e3\u807d\u9023\u7dda\u3002<\/li>\n \u5be6\u4f5c\u4e00\u500b\u7121\u7aae\u8ff4\u5708\u4f86\u6301\u7e8c\u63a5\u53d7\u65b0\u9023\u7dda\u3002<\/li>\n \u5728\u65b0\u7684\u57f7\u884c\u7dd2\u4e2d\u8655\u7406\u6bcf\u500b\u9023\u7dda\u3002<\/li>\n \u900f\u904e\u4e32\u6d41\u6536\u767c\u8cc7\u6599\u3002<\/li>\n \u5728\u5b8c\u6210\u8cc7\u6599\u50b3\u8f38\u5f8c\u95dc\u9589\u9023\u7dda\u3002<\/li>\n<\/ol>\n \n package main\r\n\r\nimport (\r\n\"fmt\"\r\n\"net\"\r\n)\r\n\r\nfunc main() {\r\nlistener, err := net.Listen(\"tcp\", \"localhost:8080\")\r\nif err != nil {\r\nfmt.Println(\"Error:\", err)\r\nreturn\r\n}\r\ndefer listener.Close()\r\n\r\nfmt.Println(\"Server is listening on port 8080\")\r\n\r\nfor {\r\nconn, err := listener.Accept()\r\nif err != nil {\r\nfmt.Println(\"Error:\", err)\r\ncontinue\r\n}\r\ngo handleClient(conn)\r\n}\r\n}\r\n\r\nfunc handleClient(conn net.Conn) {\r\ndefer conn.Close()\r\n\/\/ Read and process data from the client\r\n\/\/ Write data back to the client\r\n}\r\n<\/code><\/pre>\n<\/blockquote>\n \u4f60\u900f\u904e\u4f3a\u670d\u5668\u76e3\u807d\u4f86\u7b49\u5f85\u9023\u7dda\uff0c\u7136\u5f8c\u900f\u904e\u4e32\u6d41\u4f86\u6536\u767c\u4f4d\u5143\u7d44\u3002\u5728\u5b8c\u6210\u901a\u8a0a\u5f8c\uff0c\u518d\u95dc\u9589\u4f3a\u670d\u5668\u901a\u8a0a\u7aef\u3002<\/p>\n \u7bc4\u4f8b\u6d41\u7a0b\u89e3\u6790<\/h3>\n \u4f60\u53ef\u4ee5\u900f\u904e\u4e00\u6b65\u6b65\u7684\u6d41\u7a0b\u4f86\u7406\u89e3\u7528\u6236\u7aef\u8207\u4f3a\u670d\u5668\u662f\u5982\u4f55\u4e92\u52d5\u7684\u3002\u7528\u6236\u7aef\u5411\u4f3a\u670d\u5668\u9001\u51fa\u4e00\u884c\u4f4d\u5143\u7d44\uff0c\u4f3a\u670d\u5668\u8b80\u53d6\u5f8c\u518d\u539f\u6a23\u56de\u50b3\uff0c\u7528\u6236\u7aef\u518d\u63a5\u6536\u4e26\u5217\u5370\u9019\u884c\u56de\u8072\u8cc7\u6599\u3002<\/p>\n \n \u7528\u6236\u7aef\u5f9e\u81ea\u8eab\u8f38\u5165\u8b80\u53d6\u4e00\u884c\u4f4d\u5143\u7d44\uff0c\u4e26\u5c07\u5176\u9001\u51fa\u7d66\u4f3a\u670d\u5668\u3002<\/li>\n \u4f3a\u670d\u5668\u901a\u8a0a\u7aef\u63a5\u6536\u9019\u4e9b\u4f4d\u5143\u7d44\uff0c\u4e26\u5c07\u5176\u56de\u9001\u7d66\u7528\u6236\u7aef\u3002<\/li>\n \u7528\u6236\u7aef\u901a\u8a0a\u7aef\u63a5\u6536\u9019\u4e9b\u4f4d\u5143\u7d44\u4e26\u986f\u793a\u51fa\u4f86\u3002<\/li>\n<\/ol>\n \n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n\n\n \u89d2\u8272<\/th>\n \u6b65\u9a5f<\/th>\n<\/tr>\n \u7528\u6236\u7aef<\/td>\n 1. \u4f7f\u7528 socket() \u51fd\u5f0f\u5efa\u7acb\u901a\u8a0a\u7aef\u3002<\/td>\n<\/tr>\n <\/td>\n 2. \u4f7f\u7528 connect() \u51fd\u5f0f\u5c07\u901a\u8a0a\u7aef\u9023\u63a5\u5230\u4f3a\u670d\u5668\u4f4d\u5740\u3002<\/td>\n<\/tr>\n <\/td>\n 3. \u4f7f\u7528 read() \u8207 write() \u51fd\u5f0f\u50b3\u9001\u8207\u63a5\u6536\u8cc7\u6599\u3002<\/td>\n<\/tr>\n \u4f3a\u670d\u5668<\/td>\n 1. \u4f7f\u7528 socket() \u51fd\u5f0f\u5efa\u7acb\u901a\u8a0a\u7aef\u3002<\/td>\n<\/tr>\n <\/td>\n 2. \u4f7f\u7528 bind() \u51fd\u5f0f\u5c07\u901a\u8a0a\u7aef\u7e6b\u7d50\u5230\u4f4d\u5740\u3002<\/td>\n<\/tr>\n <\/td>\n 3. \u4f7f\u7528 listen() \u51fd\u5f0f\u76e3\u807d\u9023\u7dda\u3002<\/td>\n<\/tr>\n <\/td>\n 4. \u4f7f\u7528 accept() \u51fd\u5f0f\u63a5\u53d7\u9023\u7dda\u3002<\/td>\n<\/tr>\n <\/td>\n 5. \u4f7f\u7528 send() \u8207 recv() \u50b3\u9001\u8207\u63a5\u6536\u8cc7\u6599\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n \u4f60\u900f\u904e\u901a\u8a0a\u7aef\u7a0b\u5f0f\u8a2d\u8a08\u5728\u7528\u6236\u7aef\u8207\u4f3a\u670d\u5668\u4e4b\u9593\u5efa\u7acb\u4f4d\u5143\u7d44\u4e32\u6d41\u3002\u900f\u904e\u50b3\u9001\u8207\u63a5\u6536\u8cc7\u6599\uff0c\u4f60\u5c31\u80fd\u5be6\u73fe\u96d9\u5411\u901a\u8a0a\u3002\u4f60\u53ef\u4ee5\u5617\u8a66\u81ea\u5df1\u64b0\u5beb\u7528\u6236\u7aef\u8207\u4f3a\u670d\u5668\u901a\u8a0a\u7aef\u7a0b\u5f0f\u78bc\uff0c\u4ee5\u66f4\u76f4\u89c0\u5730\u7406\u89e3\u9023\u7dda\u662f\u5982\u4f55\u904b\u4f5c\u7684\u3002 \n\u73fe\u5728\u4f60\u5df2\u7d93\u7406\u89e3\uff0c\u5728\u4e00\u500b TCP \u9023\u7dda\u4e2d\uff0c\u7528\u6236\u7aef\u8ca0\u8cac\u8acb\u6c42\u8cc7\u6e90\uff0c\u800c\u4f3a\u670d\u5668\u8ca0\u8cac\u63d0\u4f9b\u8cc7\u6e90\u3002\u9019\u4e9b\u77e5\u8b58\u80fd\u5e6b\u52a9\u4f60\u5efa\u69cb\u53ef\u9760\u7684\u7db2\u8def\u61c9\u7528\uff0c\u4e26\u66f4\u5feb\u5730\u89e3\u6c7a\u554f\u984c\u3002\u4f60\u53ef\u4ee5\u5728\u4e0b\u8868\u4e2d\u518d\u56de\u9867\u4e00\u4e0b\u96d9\u65b9\u7684\u4e3b\u8981\u89d2\u8272\uff1a<\/p>\n \n\n\n\n<\/colgroup>\n\n\n\n\n \u89d2\u8272<\/th>\n \u8aaa\u660e<\/th>\n<\/tr>\n \u7528\u6236\u7aef<\/td>\n \u5411\u4f3a\u670d\u5668\u8acb\u6c42\u8cc7\u8a0a\u6216\u8cc7\u6e90\u7684\u61c9\u7528\u7a0b\u5f0f\u3002<\/td>\n<\/tr>\n \u4f3a\u670d\u5668<\/td>\n \u5411\u7528\u6236\u7aef\u63d0\u4f9b\u8cc7\u8a0a\u6216\u8cc7\u6e90\u7684\u61c9\u7528\u7a0b\u5f0f\uff0c\u901a\u5e38\u6301\u7e8c\u57f7\u884c\u4e26\u7b49\u5f85\u8acb\u6c42\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n \u7576\u4f60\u540c\u6642\u7406\u89e3\u7528\u6236\u7aef\u8207\u4f3a\u670d\u5668\u7aef\u4e4b\u5f8c\uff0c\u5c31\u80fd\u5728\u5c08\u6848\u4e2d\u986f\u8457\u63d0\u5347\u7a69\u5065\u6027\u3001\u53ef\u9760\u6027\u3001\u8cc7\u6e90\u7ba1\u7406\u8207\u5b89\u5168\u6027\u3002\u8a66\u8457\u89aa\u81ea\u64b0\u5beb\u7528\u6236\u7aef\u8207\u4f3a\u670d\u5668\u7a0b\u5f0f\u78bc\uff0c\u89aa\u624b\u9ad4\u9a57\u9023\u7dda\u5728\u5be6\u52d9\u4e2d\u7684\u904b\u4f5c\u65b9\u5f0f\u3002<\/p>\n \u5e38\u898b\u554f\u984c\uff08FAQ\uff09<\/strong><\/h2>\n TCP \u7528\u6236\u7aef\u7684\u4e3b\u8981\u4f5c\u7528\u662f\u4ec0\u9ebc\uff1f<\/h3>\n \u4f60\u4f7f\u7528 TCP \u7528\u6236\u7aef\u4f86\u4e3b\u52d5\u8207\u4f3a\u670d\u5668\u5efa\u7acb\u9023\u7dda\u3002\u7528\u6236\u7aef\u9001\u51fa\u8acb\u6c42\u4e26\u63a5\u6536\u56de\u61c9\uff0c\u9019\u500b\u89d2\u8272\u5e6b\u52a9\u4f60\u5b58\u53d6\u7db2\u8def\u4e0a\u7684\u8cc7\u6e90\u6216\u670d\u52d9\u3002<\/p>\n \u70ba\u4ec0\u9ebc\u5fc5\u9808\u5728\u7528\u6236\u7aef\u9023\u7dda\u4e4b\u524d\u5148\u8b93\u4f3a\u670d\u5668\u76e3\u807d\uff1f<\/h3>\n \u4f60\u9700\u8981\u8b93\u4f3a\u670d\u5668\u5148\u8655\u65bc\u76e3\u807d\u72c0\u614b\uff0c\u624d\u80fd\u63a5\u53d7\u50b3\u5165\u9023\u7dda\u3002\u5982\u679c\u4f3a\u670d\u5668\u6c92\u6709\u5728\u76e3\u807d\uff0c\u4f60\u7684\u7528\u6236\u7aef\u5c31\u7121\u6cd5\u5efa\u7acb TCP \u9023\u7dda\u3002\u76e3\u807d\u662f\u4f3a\u670d\u5668\u70ba\u901a\u8a0a\u505a\u597d\u6e96\u5099\u7684\u524d\u63d0\u3002<\/p>\n \u4e00\u53f0\u88dd\u7f6e\u53ef\u4ee5\u540c\u6642\u4f5c\u70ba\u7528\u6236\u7aef\u548c\u4f3a\u670d\u5668\u55ce\uff1f<\/h3>\n \u53ef\u4ee5\u3002\u6bd4\u65b9\u8aaa\uff0c\u4f60\u7684\u96fb\u8166\u65e2\u53ef\u4ee5\u8a17\u7ba1\u4e00\u500b\u7db2\u9801\uff0c\u53c8\u53ef\u4ee5\u540c\u6642\u9023\u63a5\u5230\u53e6\u4e00\u53f0\u4f3a\u670d\u5668\u53d6\u5f97\u66f4\u65b0\u3002\u9019\u7a2e\u8a2d\u5b9a\u53ef\u4ee5\u5be6\u73fe\u66f4\u5177\u5f48\u6027\u7684\u901a\u8a0a\u6a21\u5f0f\u3002<\/p>\n TCP \u5982\u4f55\u4fdd\u8b49\u8cc7\u6599\u53ef\u9760\u50b3\u8f38\uff1f<\/h3>\n TCP \u6703\u5c0d\u6bcf\u500b\u8cc7\u6599\u5c01\u5305\u9032\u884c\u932f\u8aa4\u6aa2\u67e5\uff0c\u4e26\u900f\u904e\u78ba\u8a8d\u6a5f\u5236\uff08ACK\uff09\u4f86\u7dad\u6301\u53ef\u9760\u6027\u3002\u5982\u679c\u8cc7\u6599\u907a\u5931\uff0cTCP \u6703\u89f8\u767c\u91cd\u50b3\u3002\u900f\u904e\u9019\u4e00\u9023\u4e32\u904e\u7a0b\uff0c\u5b83\u53ef\u4ee5\u78ba\u4fdd\u4f60\u7684\u8a0a\u606f\u5b89\u5168\u4e14\u4f9d\u5e8f\u9001\u9054\u3002<\/p>\n \u5982\u679c\u4f60\u5fd8\u8a18\u95dc\u9589\u4e00\u500b TCP \u901a\u8a0a\u7aef\u6703\u767c\u751f\u4ec0\u9ebc\u4e8b\uff1f<\/h3>\n \u5982\u679c\u4f60\u8b93\u901a\u8a0a\u7aef\u4e00\u76f4\u4fdd\u6301\u958b\u555f\u72c0\u614b\uff0c\u7a0b\u5f0f\u5c31\u53ef\u80fd\u767d\u767d\u4f54\u7528\u8cc7\u6e90\uff0c\u5c0e\u81f4\u8a18\u61b6\u9ad4\u6d29\u6f0f\u8207\u4e0d\u7a69\u5b9a\u7684\u7db2\u8def\u884c\u70ba\u3002\u56e0\u6b64\uff0c\u5728\u5b8c\u6210\u8cc7\u6599\u6536\u767c\u5f8c\uff0c\u4e00\u5b9a\u8981\u95dc\u9589\u901a\u8a0a\u7aef\u3002[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":" [vc_row][vc_column][vc_column_text css=””]\u5728 […]<\/p>\n Read More…<\/a><\/p>\n","protected":false},"author":1,"featured_media":32629,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[61],"tags":[11750,11751,11752,11753,11754],"class_list":["post-32639","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hong-kong-dedicated-server-tc","tag-tcp-communication","tag-client-server-model","tag-tcp-three-way-handshake","tag-tcp-connection-termination","tag-socket-programming"],"acf":[],"yoast_head":"\n