{"id":1104,"date":"2018-04-17T19:45:58","date_gmt":"2018-04-17T11:45:58","guid":{"rendered":"https:\/\/damogame.cn:15443\/wordpress\/?p=1104"},"modified":"2018-04-17T19:45:58","modified_gmt":"2018-04-17T11:45:58","slug":"time_wait%e7%8a%b6%e6%80%81%e4%ba%a7%e7%94%9f%e7%9a%84%e5%8e%9f%e5%9b%a0%ef%bc%8c%e5%8d%b1%e5%ae%b3%ef%bc%8c%e5%a6%82%e4%bd%95%e9%81%bf%e5%85%8d","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/1104","title":{"rendered":"time_wait\u72b6\u6001\u4ea7\u751f\u7684\u539f\u56e0\uff0c\u5371\u5bb3\uff0c\u5982\u4f55\u907f\u514d"},"content":{"rendered":"<h1 class=\"csdn_top\">time_wait\u72b6\u6001\u4ea7\u751f\u7684\u539f\u56e0\uff0c\u5371\u5bb3\uff0c\u5982\u4f55\u907f\u514d<\/h1>\n<div class=\"article_bar clearfix\">\n<div class=\"artical_tag\"><span class=\"original\">\u539f\u521b\u00a0<\/span><span class=\"time\">2017\u5e7408\u670823\u65e5 19:54:15<\/span><\/div>\n<ul class=\"article_tags clearfix csdn-tracking-statistics tracking-click\" data-mod=\"popu_377\">\n<li class=\"tit\">\u6807\u7b7e\uff1a<\/li>\n<li><a href=\"http:\/\/so.csdn.net\/so\/search\/s.do?q=%E9%9D%A2%E8%AF%95&amp;t=blog\" target=\"_blank\" rel=\"noopener\">\u9762\u8bd5<\/a>\u00a0\/<\/li>\n<li><a href=\"http:\/\/so.csdn.net\/so\/search\/s.do?q=%E7%BD%91%E7%BB%9C&amp;t=blog\" target=\"_blank\" rel=\"noopener\">\u7f51\u7edc<\/a>\u00a0\/<\/li>\n<li><a href=\"http:\/\/so.csdn.net\/so\/search\/s.do?q=tcp&amp;t=blog\" target=\"_blank\" rel=\"noopener\">tcp<\/a><\/li>\n<\/ul>\n<ul class=\"right_bar\">\n<li><button class=\"btn-noborder\"><i class=\"icon iconfont icon-read\"><\/i><span class=\"txt\">8631<\/span><\/button><\/li>\n<\/ul>\n<\/div>\n<div id=\"article_content\" class=\"article_content csdn-tracking-statistics tracking-click\" data-mod=\"popu_519\" data-dsm=\"post\">\n<div class=\"markdown_views\">\n<h3 id=\"\u524d\u8a00\"><a name=\"t0\"><\/a>\u524d\u8a00<\/h3>\n<p>\u8bf7\u8bf4\u8bf4\u4f60\u5bf9TCP\u8fde\u63a5\u4e2dtime_wait\u72b6\u6001\u7684\u7406\u89e3<\/p>\n<h3 id=\"\u89e3\u7b54\"><a name=\"t1\"><\/a>\u89e3\u7b54\uff1a<\/h3>\n<p>\u5148\u4e0aTCP\u7684\u72b6\u6001\u53d8\u8fc1\u56fe<\/p>\n<p><img decoding=\"async\" title=\"\" src=\"https:\/\/img-blog.csdn.net\/20170823193112679?watermark\/2\/text\/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvdTAxMzYxNjk0NQ==\/font\/5a6L5L2T\/fontsize\/400\/fill\/I0JBQkFCMA==\/dissolve\/70\/gravity\/SouthEast\" alt=\"\u8fd9\u91cc\u5199\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p><strong>1. time_wait\u72b6\u6001\u5982\u4f55\u4ea7\u751f\uff1f<\/strong><br \/>\n\u7531\u4e0a\u9762\u7684\u53d8\u8fc1\u56fe\uff0c\u9996\u5148\u8c03\u7528close()\u53d1\u8d77\u4e3b\u52a8\u5173\u95ed\u7684\u4e00\u65b9\uff0c\u5728\u53d1\u9001\u6700\u540e\u4e00\u4e2aACK\u4e4b\u540e\u4f1a\u8fdb\u5165time_wait\u7684\u72b6\u6001\uff0c\u4e5f\u5c31\u8bf4\u8be5\u53d1\u9001\u65b9\u4f1a\u4fdd\u63012MSL\u65f6\u95f4\u4e4b\u540e\u624d\u4f1a\u56de\u5230\u521d\u59cb\u72b6\u6001\u3002MSL\u503c\u5f97\u662f\u6570\u636e\u5305\u5728\u7f51\u7edc\u4e2d\u7684\u6700\u5927\u751f\u5b58\u65f6\u95f4\u3002\u4ea7\u751f\u8fd9\u79cd\u7ed3\u679c\u4f7f\u5f97\u8fd9\u4e2aTCP\u8fde\u63a5\u57282MSL\u8fde\u63a5\u7b49\u5f85\u671f\u95f4\uff0c\u5b9a\u4e49\u8fd9\u4e2a\u8fde\u63a5\u7684\u56db\u5143\u7ec4\uff08\u5ba2\u6237\u7aefIP\u5730\u5740\u548c\u7aef\u53e3\uff0c\u670d\u52a1\u7aefIP\u5730\u5740\u548c\u7aef\u53e3\u53f7\uff09\u4e0d\u80fd\u88ab\u4f7f\u7528\u3002<\/p>\n<p><strong>2.time_wait\u72b6\u6001\u4ea7\u751f\u7684\u539f\u56e0<\/strong><\/p>\n<p><strong>1\uff09\u4e3a\u5b9e\u73b0TCP\u5168\u53cc\u5de5\u8fde\u63a5\u7684\u53ef\u9760\u91ca\u653e<\/strong><\/p>\n<p>\u7531TCP\u72b6\u6001\u53d8\u8fc1\u56fe\u53ef\u77e5\uff0c\u5047\u8bbe\u53d1\u8d77\u4e3b\u52a8\u5173\u95ed\u7684\u4e00\u65b9\uff08client\uff09\u6700\u540e\u53d1\u9001\u7684ACK\u5728\u7f51\u7edc\u4e2d\u4e22\u5931\uff0c\u7531\u4e8eTCP\u534f\u8bae\u7684\u91cd\u4f20\u673a\u5236\uff0c\u6267\u884c\u88ab\u52a8\u5173\u95ed\u7684\u4e00\u65b9\uff08server\uff09\u5c06\u4f1a\u91cd\u53d1\u5176FIN\uff0c\u5728\u8be5FIN\u5230\u8fbeclient\u4e4b\u524d\uff0cclient\u5fc5\u987b\u7ef4\u62a4\u8fd9\u6761\u8fde\u63a5\u72b6\u6001\uff0c\u4e5f\u5c31\u8bf4\u8fd9\u6761TCP\u8fde\u63a5\u6240\u5bf9\u5e94\u7684\u8d44\u6e90\uff08client\u65b9\u7684local_ip,local_port\uff09\u4e0d\u80fd\u88ab\u7acb\u5373\u91ca\u653e\u6216\u91cd\u65b0\u5206\u914d\uff0c\u76f4\u5230\u53e6\u4e00\u65b9\u91cd\u53d1\u7684FIN\u8fbe\u5230\u4e4b\u540e\uff0cclient\u91cd\u53d1ACK\u540e\uff0c\u7ecf\u8fc72MSL\u65f6\u95f4\u5468\u671f\u6ca1\u6709\u518d\u6536\u5230\u53e6\u4e00\u65b9\u7684FIN\u4e4b\u540e\uff0c\u8be5TCP\u8fde\u63a5\u624d\u80fd\u6062\u590d\u521d\u59cb\u7684CLOSED\u72b6\u6001\u3002\u5982\u679c\u4e3b\u52a8\u5173\u95ed\u4e00\u65b9\u4e0d\u7ef4\u62a4\u8fd9\u6837\u4e00\u4e2aTIME_WAIT\u72b6\u6001\uff0c\u90a3\u4e48\u5f53\u88ab\u52a8\u5173\u95ed\u4e00\u65b9\u91cd\u53d1\u7684FIN\u5230\u8fbe\u65f6\uff0c\u4e3b\u52a8\u5173\u95ed\u4e00\u65b9\u7684TCP\u4f20\u8f93\u5c42\u4f1a\u7528RST\u5305\u54cd\u5e94\u5bf9\u65b9\uff0c\u8fd9\u4f1a\u88ab\u5bf9\u65b9\u8ba4\u4e3a\u662f\u6709\u9519\u8bef\u53d1\u751f\uff0c\u7136\u800c\u8fd9\u4e8b\u5b9e\u4e0a\u53ea\u662f\u6b63\u5e38\u7684\u5173\u95ed\u8fde\u63a5\u8fc7\u7a0b\uff0c\u5e76\u975e\u5f02\u5e38\u3002<\/p>\n<p><strong>2\uff09\u4e3a\u4f7f\u65e7\u7684\u6570\u636e\u5305\u5728\u7f51\u7edc\u56e0\u8fc7\u671f\u800c\u6d88\u5931<\/strong><\/p>\n<p>\u4e3a\u8bf4\u660e\u8fd9\u4e2a\u95ee\u9898\uff0c\u6211\u4eec\u5148\u5047\u8bbeTCP\u534f\u8bae\u4e2d\u4e0d\u5b58\u5728TIME_WAIT\u72b6\u6001\u7684\u9650\u5236\uff0c\u518d\u5047\u8bbe\u5f53\u524d\u6709\u4e00\u6761TCP\u8fde\u63a5\uff1a(local_ip, local_port, remote_ip,remote_port)\uff0c\u56e0\u67d0\u4e9b\u539f\u56e0\uff0c\u6211\u4eec\u5148\u5173\u95ed\uff0c\u63a5\u7740\u5f88\u5feb\u4ee5\u76f8\u540c\u7684\u56db\u5143\u7ec4\u5efa\u7acb\u4e00\u6761\u65b0\u8fde\u63a5\u3002\u672c\u6587\u524d\u9762\u4ecb\u7ecd\u8fc7\uff0cTCP\u8fde\u63a5\u7531\u56db\u5143\u7ec4\u552f\u4e00\u6807\u8bc6\uff0c\u56e0\u6b64\uff0c\u5728\u6211\u4eec\u5047\u8bbe\u7684\u60c5\u51b5\u4e2d\uff0cTCP\u534f\u8bae\u6808\u662f\u65e0\u6cd5\u533a\u5206\u524d\u540e\u4e24\u6761TCP\u8fde\u63a5\u7684\u4e0d\u540c\u7684\uff0c\u5728\u5b83\u770b\u6765\uff0c\u8fd9\u6839\u672c\u5c31\u662f\u540c\u4e00\u6761\u8fde\u63a5\uff0c\u4e2d\u95f4\u5148\u91ca\u653e\u518d\u5efa\u7acb\u7684\u8fc7\u7a0b\u5bf9\u5176\u6765\u8bf4\u662f\u201c\u611f\u77e5\u201d\u4e0d\u5230\u7684\u3002\u8fd9\u6837\u5c31\u53ef\u80fd\u53d1\u751f\u8fd9\u6837\u7684\u60c5\u51b5\uff1a\u524d\u4e00\u6761TCP\u8fde\u63a5\u7531local peer\u53d1\u9001\u7684\u6570\u636e\u5230\u8fberemote peer\u540e\uff0c\u4f1a\u88ab\u8be5remot peer\u7684TCP\u4f20\u8f93\u5c42\u5f53\u505a\u5f53\u524dTCP\u8fde\u63a5\u7684\u6b63\u5e38\u6570\u636e\u63a5\u6536\u5e76\u5411\u4e0a\u4f20\u9012\u81f3\u5e94\u7528\u5c42\uff08\u800c\u4e8b\u5b9e\u4e0a\uff0c\u5728\u6211\u4eec\u5047\u8bbe\u7684\u573a\u666f\u4e0b\uff0c\u8fd9\u4e9b\u65e7\u6570\u636e\u5230\u8fberemote peer\u524d\uff0c\u65e7\u8fde\u63a5\u5df2\u65ad\u5f00\u4e14\u4e00\u6761\u7531\u76f8\u540c\u56db\u5143\u7ec4\u6784\u6210\u7684\u65b0TCP\u8fde\u63a5\u5df2\u5efa\u7acb\uff0c\u56e0\u6b64\uff0c\u8fd9\u4e9b\u65e7\u6570\u636e\u662f\u4e0d\u5e94\u8be5\u88ab\u5411\u4e0a\u4f20\u9012\u81f3\u5e94\u7528\u5c42\u7684\uff09\uff0c\u4ece\u800c\u5f15\u8d77\u6570\u636e\u9519\u4e71\u8fdb\u800c\u5bfc\u81f4\u5404\u79cd\u65e0\u6cd5\u9884\u77e5\u7684\u8be1\u5f02\u73b0\u8c61\u3002\u4f5c\u4e3a\u4e00\u79cd\u53ef\u9760\u7684\u4f20\u8f93\u534f\u8bae\uff0cTCP\u5fc5\u987b\u5728\u534f\u8bae\u5c42\u9762\u8003\u8651\u5e76\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\u7684\u53d1\u751f\uff0c\u8fd9\u6b63\u662fTIME_WAIT\u72b6\u6001\u5b58\u5728\u7684\u7b2c2\u4e2a\u539f\u56e0\u3002<\/p>\n<p><strong>3\uff09\u603b\u7ed3<\/strong><br \/>\n\u5177\u4f53\u800c\u8a00\uff0clocal peer\u4e3b\u52a8\u8c03\u7528close\u540e\uff0c\u6b64\u65f6\u7684TCP\u8fde\u63a5\u8fdb\u5165TIME_WAIT\u72b6\u6001\uff0c\u5904\u4e8e\u8be5\u72b6\u6001\u4e0b\u7684TCP\u8fde\u63a5\u4e0d\u80fd\u7acb\u5373\u4ee5\u540c\u6837\u7684\u56db\u5143\u7ec4\u5efa\u7acb\u65b0\u8fde\u63a5\uff0c\u5373\u53d1\u8d77active close\u7684\u90a3\u65b9\u5360\u7528\u7684local port\u5728TIME_WAIT\u671f\u95f4\u4e0d\u80fd\u518d\u88ab\u91cd\u65b0\u5206\u914d\u3002\u7531\u4e8eTIME_WAIT\u72b6\u6001\u6301\u7eed\u65f6\u95f4\u4e3a2MSL\uff0c\u8fd9\u6837\u4fdd\u8bc1\u4e86\u65e7TCP\u8fde\u63a5\u53cc\u5de5\u94fe\u8def\u4e2d\u7684\u65e7\u6570\u636e\u5305\u5747\u56e0\u8fc7\u671f\uff08\u8d85\u8fc7MSL\uff09\u800c\u6d88\u5931\uff0c\u6b64\u540e\uff0c\u5c31\u53ef\u4ee5\u7528\u76f8\u540c\u7684\u56db\u5143\u7ec4\u5efa\u7acb\u4e00\u6761\u65b0\u8fde\u63a5\u800c\u4e0d\u4f1a\u53d1\u751f\u524d\u540e\u4e24\u6b21\u8fde\u63a5\u6570\u636e\u9519\u4e71\u7684\u60c5\u51b5\u3002<\/p>\n<p><strong>3.time_wait\u72b6\u6001\u5982\u4f55\u907f\u514d<\/strong><\/p>\n<p>\u9996\u5148\u670d\u52a1\u5668\u53ef\u4ee5\u8bbe\u7f6eSO_REUSEADDR\u5957\u63a5\u5b57\u9009\u9879\u6765\u901a\u77e5\u5185\u6838\uff0c\u5982\u679c\u7aef\u53e3\u5fd9\uff0c\u4f46TCP\u8fde\u63a5\u4f4d\u4e8eTIME_WAIT\u72b6\u6001\u65f6\u53ef\u4ee5\u91cd\u7528\u7aef\u53e3\u3002\u5728\u4e00\u4e2a\u975e\u5e38\u6709\u7528\u7684\u573a\u666f\u5c31\u662f\uff0c\u5982\u679c\u4f60\u7684\u670d\u52a1\u5668\u7a0b\u5e8f\u505c\u6b62\u540e\u60f3\u7acb\u5373\u91cd\u542f\uff0c\u800c\u65b0\u7684\u5957\u63a5\u5b57\u4f9d\u65e7\u5e0c\u671b\u4f7f\u7528\u540c\u4e00\u7aef\u53e3\uff0c\u6b64\u65f6SO_REUSEADDR\u9009\u9879\u5c31\u53ef\u4ee5\u907f\u514dTIME_WAIT\u72b6\u6001\u3002<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>time_wait\u72b6\u6001\u4ea7\u751f\u7684\u539f\u56e0\uff0c\u5371\u5bb3\uff0c<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[118],"class_list":["post-1104","post","type-post","status-publish","format-standard","hentry","tag-02-"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/1104","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=1104"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/1104\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=1104"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=1104"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=1104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}