{"id":537,"date":"2022-09-26T17:14:10","date_gmt":"2022-09-26T09:14:10","guid":{"rendered":"https:\/\/qaqaq.top\/?p=537"},"modified":"2022-11-27T12:43:53","modified_gmt":"2022-11-27T04:43:53","slug":"tcp-%e9%87%8d%e4%bc%a0%e6%9c%ba%e5%88%b6","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=537","title":{"rendered":"TCP-\u91cd\u4f20\u673a\u5236"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">\u91cd\u4f20\u673a\u5236<\/h1>\n\n\n\n<p>TCP\u5b9e\u73b0\u53ef\u9760\u4f20\u8f93\u7684\u65b9\u5f0f\u4e4b\u4e00\uff0c\u662f\u901a\u8fc7\u5e8f\u5217\u53f7\u4e0e\u786e\u8ba4\u5e94\u7b54<\/p>\n\n\n\n<p>\u5728TCP\u5f53\u4e2d\uff0c\u5f53\u53d1\u9001\u7aef\u7684\u6570\u636e\u8fbe\u5230\u63a5\u53d7\u4e3b\u673a\u65f6\uff0c\u63a5\u6536\u7aef\u4e3b\u673a\u4f1a\u63a5\u53d7\u4e00\u4e2a\u786e\u8ba4\u5e94\u7b54\uff0c\u8868\u793a\u5df2\u6536\u5230\u6d88\u606f<\/p>\n\n\n\n<p>TCP\u9488\u5bf9\u6570\u636e\u5305\u4e22\u5931\u7684\u60c5\u51b5\uff0c\u4f1a\u7528<strong>\u91cd\u4f20\u673a\u5236<\/strong>\u89e3\u51b3\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u8d85\u65f6\u91cd\u4f20<\/li><li>\u5feb\u901f\u91cd\u4f20<\/li><li>SACK<\/li><li>D-SACK<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u8d85\u65f6\u91cd\u4f20<\/h2>\n\n\n\n<p>\u91cd\u4f20\u673a\u5236\u7684\u5176\u4e2d\u4e00\u4e2a\u65b9\u5f0f\uff0c\u5c31\u662f\u5728\u53d1\u9001\u6570\u636e\u7684\u65f6\u5019\uff0c\u8bbe\u5b9a\u4e00\u4e2a\u5b9a\u65f6\u5668\uff0c\u5f53\u8d85\u8fc7\u6307\u5b9a\u7684\u65f6\u95f4\u540e\uff0c\u6ca1\u6709\u6536\u5230\u5bf9\u65b9\u7684<strong>ACK<\/strong>\u786e\u8ba4\u5e94\u7b54\u62a5\u6587\uff0c\u5c31\u4f1a\u91cd\u53d1\u8be5\u6570\u636e\uff0c\u4e5f\u5c31\u662f\u6211\u4eec\u5e38\u8bf4\u7684<strong>\u8d85\u65f6\u91cd\u4f20<\/strong><\/p>\n\n\n\n<p>TCP\u4f1a\u5728\u4ee5\u4e0b\u4e24\u79cd\u60c5\u51b5\u53d1\u751f\u8d85\u65f6\u91cd\u4f20\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u6570\u636e\u5305\u4e22\u5931<\/li><li>\u786e\u8ba4\u5e94\u7b54\u4e22\u5931<\/li><\/ul>\n\n\n\n<p>\u8d85\u65f6\u65f6\u95f4\u5e94\u8be5\u8bbe\u7f6e\u4e3a\u591a\u5c11\u5462\uff1f<strong>&nbsp;RTT<\/strong>\uff08Round-Trip Time 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class=\"wp-block-list\"><li>\u9700\u8981TCP\u901a\u8fc7\u91c7\u6837RTT\u7684\u65f6\u95f4\uff0c\u7136\u540e\u52a0\u6743\u5e73\u5747\uff0c\u7b97\u51fa\u4e00\u4e2a\u5e73\u6ed1RTT\u7684\u503c\uff0c\u800c\u4e14\u8fd9\u4e2a\u503c\u8fd8\u8981\u4e0d\u65ad\u7684\u53d8\u5316\uff0c\u56e0\u4e3a\u7f51\u7edc\u72b6\u51b5\u5728\u4e0d\u65ad\u5730\u53d8\u5316<\/li><li>\u9664\u4e86\u91c7\u6837RTT\uff0c\u8fd8\u8981\u91c7\u6837RTT\u7684\u6ce2\u52a8\u8303\u56f4\uff0c\u8fd9\u6837\u5c31\u907f\u514d\u4e86RTT\u5982\u679c\u6709\u4e00\u4e2a\u5927\u7684\u6ce2\u52a8\u7684\u8bdd\uff0c\u5f88\u96be\u88ab\u53d1\u73b0\u7684\u60c5\u51b5<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u5feb\u901f\u91cd\u4f20<\/h2>\n\n\n\n<p>TCP\u8fd8\u6709l\u53e6\u5916\u4e00\u79cd\u5feb\u901f\u91cd\u4f20\uff08Fast Retransmission\uff09\u673a\u5236\uff0c\u5b83\u4e0d\u4ee5\u65f6\u95f4\u4e3a\u9a71\u52a8\uff0c\u800c\u662f\u4ee5\u6570\u636e\u4e3a\u9a71\u52a8\u91cd\u4f20\u3002<\/p>\n\n\n\n<p>\u5feb\u901f\u91cd\u4f20\u7684\u5de5\u4f5c\u65b9\u5f0f\u662f\u5e94\u5f53\u6536\u5230\u4e09\u4e2a\u76f8\u540c\u7684ACK\u62a5\u6587\u65f6\uff0c\u4f1a\u5728\u5b9a\u65f6\u5668\u8fc7\u671f\u4e4b\u524d\uff0c\u91cd\u4f20\u4e22\u5931\u7684\u62a5\u6587\u6bb5\u3002<\/p>\n\n\n\n<p>\u5feb\u901f\u91cd\u4f20\u673a\u5236\u53ea\u89e3\u51b3\u4e86\u4e00\u4e2a\u95ee\u9898\uff0c\u5c31\u662f\u8d85\u65f6\u65f6\u95f4\u7684\u95ee\u9898\uff0c\u4f46\u662f\u5b83\u4f9d\u7136\u9762\u4e34\u7740\u53e6\u5916\u4e00\u4e2a\u95ee\u9898\u3002\u5c31\u662f\u91cd\u4f20\u7684\u65f6\u5019\uff0c\u662f\u91cd\u4f20\u4e4b\u524d\u7684\u4e00\u4e2a\uff0c\u8fd8\u662f\u91cd\u4f20\u6240\u6709\u7684\u62a5\u6587\u6bb5\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n<p>\u6839\u636eTCP\u7684\u4e0d\u540c\u5b9e\u73b0\uff0c\u4ee5\u4e0a\u4e24\u79cd\u60c5\u51b5\u90fd\u6709\u53ef\u80fd\u5b9e\u73b0\u3002\u4e3a\u4e86\u89e3\u51b3\u4e0d\u77e5\u9053\u8be5\u91cd\u4f20\u54ea\u4e9bTCP\u62a5\u6587\uff0c\u4e8e\u662f\u5c31\u6709\u4e86SACK\u65b9\u6cd5\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">SACK<\/h2>\n\n\n\n<p>\u8fd8\u6709\u4e00\u79cd\u5b9e\u73b0\u91cd\u4f20\u7684\u673a\u5236j\u53eb\uff1aSACK\uff08Selective Acknowledgement\u9009\u62e9\u6027\u786e\u8ba4\uff09\u3002<\/p>\n\n\n\n<p>\u8fd9\u79cd\u65b9\u5f0f\u9700\u8981\u5728TCP\u5934\u90e8\u3010\u9009\u9879\u3011\u5b57\u6bb5\u91cc\u52a0\u4e00\u4e2aSACK\u7684\u4e1c\u897f\u3002\u5b83\u53ef\u4ee5\u5c06\u7f13\u5b58\u7684\u5730\u56fe\u53d1\u9001\u7ed9\u53d1\u9001\u65b9\uff0c\u8fd9\u6837\u53d1\u9001\u65b9\u5c31\u53ef\u4ee5\u77e5\u9053\u54ea\u4e9b\u6570\u636e\u6536\u5230\u4e86\uff0c\u54ea\u4e9b\u6570\u636e\u6ca1\u6536\u5230\uff0c\u77e5\u9053\u4e86\u8fd9\u4e9b\u4fe1\u606f\uff0c\u5c31\u53ef\u4ee5\u53ea\u91cd\u4f20\u4e22\u5931\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">D-SACK<\/h2>\n\n\n\n<p>Duplicate 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[&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[57],"class_list":["post-537","post","type-post","status-publish","format-standard","hentry","category-20","tag-57"],"_links":{"self":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/537"}],"collection":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=537"}],"version-history":[{"count":1,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/537\/revisions"}],"predecessor-version":[{"id":538,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/537\/revisions\/538"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=537"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=537"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=537"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}