{"id":556733,"date":"2022-03-08T12:11:19","date_gmt":"2022-03-08T04:11:19","guid":{"rendered":"http:\/\/4563.org\/?p=556733"},"modified":"2022-03-08T12:11:19","modified_gmt":"2022-03-08T04:11:19","slug":"%e5%85%b3%e4%ba%8e%e3%80%8a%e8%ae%a1%e7%ae%97%e6%9c%ba%e7%bd%91%e7%bb%9c%ef%bc%9a%e8%87%aa%e9%a1%b6%e5%90%91%e4%b8%8b%e6%96%b9%e6%b3%95%e3%80%8b%e4%b8%80%e4%b9%a6%e4%b8%ad-tcp-%e5%8d%8f%e8%ae%ae","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=556733","title":{"rendered":"\u5173\u4e8e\u300a\u8ba1\u7b97\u673a\u7f51\u7edc\uff1a\u81ea\u9876\u5411\u4e0b\u65b9\u6cd5\u300b\u4e00\u4e66\u4e2d TCP \u534f\u8bae\u7684\u95ee\u9898"},"content":{"rendered":"<div>\n<div><a href=\"http:\/\/machbbs.com\/user-2.htm\" tabindex=\"-1\"><\/a><\/p>\n<div>\n<h1>\u5173\u4e8e\u300a\u8ba1\u7b97\u673a\u7f51\u7edc\uff1a\u81ea\u9876\u5411\u4e0b\u65b9\u6cd5\u300b\u4e00\u4e66\u4e2d TCP \u534f\u8bae\u7684\u95ee\u9898<\/h1>\n<p><\/p>\n<div>\n<div><span>\u8cc7\u6df1\u5927\u4f6c :rattlecattle<\/span><span><i><\/i>0<\/span><\/div>\n<div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div isfirst=\"1\">\u6700\u8fd1\u5728\u6076\u8865\u8ba1\u7b97\u673a\u7f51\u7edc\u7684\u77e5\u8bc6\uff0c\u770b\u5230\u4e86 TCP \u534f\u8bae\u90e8\u5206\uff0c\u5728\u7b2c\u4e03\u7248 164 \u9875\uff0c\u9610\u8ff0 TCP \u662f\u56de\u9000 N \u6b65\uff08 GBN \uff09\u8fd8\u662f\u9009\u62e9\u91cd\u4f20(SR)\u6709\u8fd9\u6837\u7684\u8bba\u8ff0\uff1a<br \/>\u201cTCP \u770b\u8d77\u6765\u66f4\u50cf\u662f GBN \u98ce\u683c\u7684\u534f\u8bae\uff0c\u4f46\u662f TCP \u548c GBN \u6709\u7740\u663e\u8457\u7684\u533a\u522b\u3002\u8bb8\u591a TCP \u5b9e\u73b0\u4f1a\u5c06\u6b63\u786e\u63a5\u6536\u4f46\u5931\u5e8f\u4e0a\u7f51\u62a5\u6587\u6bb5\u7f13\u5b58\u8d77\u6765\u3002<br \/>\u53e6\u5916\u8003\u8651\u4e00\u4e0b\uff0c\u5f53\u53d1\u9001\u65b9\u53d1\u9001\u4e00\u7ec4\u62a5\u6587\u6bb5 1,2 \uff0c&#8230;\uff0cN 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\u751a\u81f3\u4e0d\u4f1a\u91cd\u4f20\u62a5\u6587\u6bb5 n.\u201d<br \/>\u5f88\u7591\u60d1\uff0cGBN \u4e0d\u662f\u7d2f\u8ba1\u786e\u8ba4\u5417\uff1f \u5982\u679c\u9664\u4e86 n \u5176\u4f59\u7684 ACK \u4f20\u56de\u53d1\u9001\u65b9\uff0c\u90a3\u4e48\u53d1\u9001\u65b9\u6536\u5230\u4e86\u6bd4 n \u66f4\u9ad8\u7684\u6bd4\u5982 N &gt; n \u7684 ACK \uff0c\u4e0d\u5c31\u786e\u8ba4\u4e86\u8fd9\u4e2a N \u4e4b\u524d\u7684\u5206\u7ec4\u90fd\u5df2\u7ecf\u88ab\u4ea4\u4ed8\u4e86\u5417\uff1f\u4e3a\u4ec0\u4e48\u8fd8\u4f1a\u91cd\u4f20 n, n + 1 \uff0cn + 2 \uff0c&#8230;&#8230;\uff0cN \uff1f<\/div>\n<div><\/div>\n<\/div>\n<\/div>\n<div>\n<div>\n<div>\n<div>\n<div><b>\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (<span>6<\/span>)        <\/div>\n<div><\/div>\n<\/div>\n<\/div>\n<ul>\n<li data-pid=\"7502098\" data-uid=\"2\"><a href=\"http:\/\/machbbs.com\/user-2.htm\" tabindex=\"-1\"><\/a>\n<div>\n<div>\n<div><span>\u8cc7\u6df1\u5927\u4f6c :1423<\/span><\/div>\n<div><i title=\"\u5f15\u7528\"><\/i><span><\/span><\/div>\n<\/div>\n<div>sack<\/div>\n<\/div>\n<\/li>\n<li data-pid=\"7502100\" data-uid=\"2\"><a href=\"http:\/\/machbbs.com\/user-2.htm\" tabindex=\"-1\"><\/a>\n<div>\n<div>\n<div><span>\u8cc7\u6df1\u5927\u4f6c :ziseyinzi<\/span><\/div>\n<div><i title=\"\u5f15\u7528\"><\/i><span><\/span><\/div>\n<\/div>\n<div>GBN \u63a5\u6536\u65b9\u6ca1\u6536\u5230 n \uff0c\u5c31\u4e0d\u4f1a\u4f20\u9001 n \u53ca\u4e4b\u540e\u5305\u7684 ACK \uff0c\u5373\u4f7f\u5b83\u6536\u5230\u4e86 n+1 \u5230 N \u7684\u5305\uff0c\u4e5f\u53ea\u4f1a\u53d1\u9001 ACK(n-1)<\/div>\n<\/div>\n<\/li>\n<li data-pid=\"7502102\" data-uid=\"2\"><a href=\"http:\/\/machbbs.com\/user-2.htm\" tabindex=\"-1\"><\/a>\n<div>\n<div>\n<div><span>\u8cc7\u6df1\u5927\u4f6c :ruimz<\/span><\/div>\n<div><i title=\"\u5f15\u7528\"><\/i><span><\/span><\/div>\n<\/div>\n<div>\u611f\u89c9 OP 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\uff0c\u5c31\u662f\u56e0\u4e3a\u5b83\u7684\u63a5\u53d7\u7f13\u5b58\u91cc\u9762\u6ca1\u6709\u8fd9\u4e9b\u62a5\u6587\uff0c\u4e71\u5e8f\u62a5\u6587\u90fd\u4f1a\u88ab\u4e22\u5f03\u3002<br \/>\u8bf4\u5b9e\u8bdd\uff0c\u8fd9\u4e9b\u4e66\u548c\u771f\u6b63\u7684\u5b9e\u73b0\u6709\u4e00\u4e9b\u8131\u8f68\u4e86\uff0c\u7279\u522b\u662f loss recovery \uff0cRACK \u5b8c\u5168\u6539\u53d8\u4e86 loss recovery \u3002\u5efa\u8bae\u770b\u770b RFC6675 (SACK), RFC6582 (NewReno style loss recovery) \u4ee5\u53ca RFC 8985 (RACK)\u3002\u8fd9\u4e09\u79cd loss recovery \u662f\u771f\u6b63\u4e3b\u6d41\u64cd\u4f5c\u7cfb\u7edf\u5728\u7528\u7684 \uff08 Windows \u548c Linux \uff09\u3002RFC6582 \u662f\u5728 SACK \u6ca1\u6709\u542f\u7528\u7684\u65f6\u5019\u7684 loss recovery \u3002<\/div>\n<\/div>\n<\/li>\n<li data-pid=\"7502105\" data-uid=\"2\"><a href=\"http:\/\/machbbs.com\/user-2.htm\" tabindex=\"-1\"><\/a>\n<div>\n<div>\n<div><span>\u8cc7\u6df1\u5927\u4f6c :documentzhangx66<\/span><\/div>\n<div><i title=\"\u5f15\u7528\"><\/i><span><\/span><\/div>\n<\/div>\n<div>\u5206\u6790\u5386\u53f2\u534f\u8bae\u7684\u5236\u5b9a\uff0c\u8981\u8003\u8651\u5f53\u65f6\u7684\u4e3b\u6d41\u8bbe\u5907\u4e0e\u7ecf\u6d4e\u60c5\u51b5\u3002<br \/>\u73b0\u5728\u5185\u5b58\u4fbf\u5b9c\uff0c\u5404\u79cd\u7f51\u7edc\u8bbe\u5907\uff0c\u4ee5\u53ca\u7f51\u5361\uff0c\u90fd\u80fd\u4ee5\u5f88\u4fbf\u5b9c\u7684\u6210\u672c\uff0c\u7f13\u5b58\u5927\u5bb9\u91cf\u7684\u6570\u636e\u3002<br \/>\u4f46\u4ee5\u524d\u4e0d\u662f\u8fd9\u4e2a\u60c5\u51b5\uff0c\u90a3\u65f6\u5019\u5185\u5b58\u6b7b\u8d35\uff0c\u56e0\u6b64\u5927\u5bb6\u624d\u613f\u610f\u727a\u7272\u65f6\u95f4\uff0c\u6765\u6362\u53d6\u66f4\u4f4e\u6210\u672c\u3002\u56e0\u6b64\uff0c\u7b49\u5f85\u4e0e\u91cd\u4f20\u5269\u4f59\u6240\u6709\u6570\u636e\uff0c\u5728\u90a3\u4e2a\u65f6\u671f\uff0c\u6bd4\u7f13\u5b58\u4e14\u4ec5\u91cd\u4f20\u5931\u6548\u6570\u636e\uff0c\u5728\u7ecf\u6d4e\u4ef7\u503c\u4e0a\u8981\u597d\u7684\u591a\u3002<br \/>\u8fd9\u4e2a\u8bdd\u9898\u5c31\u50cf\u5343\u5e74\u866b\u95ee\u9898\u4e00\u6837\u3002\u5176\u5b9e\u76f4\u63a5\u7528\u52a8\u6001\u957f\u5ea6\u7684\u65f6\u95f4\u53d8\u91cf\uff0c\u80fd\u591f\u4e00\u6b21\u6027\u5f7b\u5e95\u89e3\u51b3\u5343\u5e74\u866b\u95ee\u9898\uff0c\u4f46\u7ecf\u6d4e\u6210\u672c\u592a\u9ad8\u4e86\uff0c\u56e0\u4e3a\u53d8\u957f\u7684\u53d8\u91cf\uff0c\u5728\u5b58\u50a8\u4e0e\u8fd0\u7b97\u4ee3\u4ef7\uff0c\u8981\u9ad8\u4e8e\u5b9a\u957f\u53d8\u91cf\u597d\u51e0\u500d\uff0c\u8fd9\u4e2a\u95ee\u9898\u5728\u5f88\u591a\u4f4e\u6210\u672c\u7684\u5c0f\u578b\u786c\u4ef6\u4e0a\u5f71\u54cd\u66f4\u5927\u3002\u6240\u4ee5\uff0c\u4e1a\u754c\u89e3\u51b3\u5343\u5e74\u866b\u7684\u65b9\u6848\uff0c\u53ea\u662f\u628a 32 \u4f4d\u53d8\u91cf\u6362\u6210 64 \u4f4d\u53d8\u91cf\u4e86\uff0c\u867d\u7136\u80fd\u7528\u5f88\u957f\u7684\u65f6\u95f4\uff0c\u5e76\u4e14\u5728\u7ecf\u6d4e\u4e0a\u5f88\u5212\u7b97\uff0c\u4f46\u5374\u662f\u6cbb\u6807\u4e0d\u6cbb\u672c\u7684\u65b9\u6848\u3002<\/div>\n<\/div>\n<\/li>\n<li data-pid=\"7502107\" data-uid=\"2\"><a href=\"http:\/\/machbbs.com\/user-2.htm\" tabindex=\"-1\"><\/a>\n<div>\n<div>\n<div><span>\u8cc7\u6df1\u5927\u4f6c :learningman<\/span><\/div>\n<div><i title=\"\u5f15\u7528\"><\/i><span><\/span><\/div>\n<\/div>\n<div><b>@documentzhangx66 <\/b> \u6362\u6210 64 \u4f4d\uff0c\u80fd\u6cbb\u6807\u7684\u65f6\u95f4\u6709\u70b9\u957f\u3002\u3002\u3002<\/div>\n<\/div>\n<\/li>\n<li>\n","protected":false},"excerpt":{"rendered":"<p>\u5173\u4e8e\u300a\u8ba1\u7b97\u673a\u7f51\u7edc\uff1a\u81ea\u9876\u5411\u4e0b\u65b9\u6cd5\u300b\u4e00&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/556733"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=556733"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/556733\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=556733"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=556733"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=556733"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}