{"id":127988,"date":"2020-06-12T12:15:23","date_gmt":"2020-06-12T04:15:23","guid":{"rendered":"http:\/\/4563.org\/?p=127988"},"modified":"2020-06-12T12:15:23","modified_gmt":"2020-06-12T04:15:23","slug":"tcp-%e8%bf%9e%e6%8e%a5%e4%b8%ad%e6%9c%8d%e5%8a%a1%e7%ab%af%e9%95%bf%e6%97%b6%e9%97%b4%e5%a4%84%e4%ba%8e-fin_wait1-%e7%8a%b6%e6%80%81-%e5%ae%a2%e6%88%b7%e7%ab%af%e6%98%af%e5%90%a6%e6%97%a0%e6%b3%95","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=127988","title":{"rendered":"TCP \u8fde\u63a5\u4e2d\u670d\u52a1\u7aef\u957f\u65f6\u95f4\u5904\u4e8e FIN_WAIT1 \u72b6\u6001, \u5ba2\u6237\u7aef\u662f\u5426\u65e0\u6cd5\u6536\u5230 Close \u4e8b\u4ef6?"},"content":{"rendered":"
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TCP \u8fde\u63a5\u4e2d\u670d\u52a1\u7aef\u957f\u65f6\u95f4\u5904\u4e8e FIN_WAIT1 \u72b6\u6001, \u5ba2\u6237\u7aef\u662f\u5426\u65e0\u6cd5\u6536\u5230 Close \u4e8b\u4ef6? <\/h1>\n

<\/p>\n

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\u8cc7\u6df1\u5927\u4f6c : Mohanson <\/span> <\/i> 74<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u670d\u52a1\u7aef\u6b63\u53d1\u9001\u6570\u636e\u7ed9\u5ba2\u6237\u7aef, \u670d\u52a1\u7aef\u5728\u6570\u636e\u53d1\u9001\u5b8c\u6bd5\u540e Close \u94fe\u63a5, netstat \u53d1\u73b0\u8fd9\u4e2a\u94fe\u63a5\u8fdb\u5165\u4e86 FIN_WAIT1 \u72b6\u6001, \u5ba2\u6237\u7aef\u7684 Read \u8c03\u7528\u4e5f\u6ca1\u6709\u88ab\u7ec8\u6b62(\u6b63\u5e38\u60c5\u51b5\u4e0b, \u670d\u52a1\u7aef Close \u540e, \u5ba2\u6237\u7aef\u7684 Read \u4f1a\u62a5 use of closed network connection \u9519\u8bef, \u4f46\u670d\u52a1\u7aef\u8fdb\u5165 FIN_WAIT1 \u7684\u65f6\u5019\u5ba2\u6237\u7aef\u597d\u50cf\u4e0d\u77e5\u9053\u8fd9\u4e2a\u94fe\u63a5\u5df2\u7ecf\u88ab\u5173\u95ed\u4e86\u8fd8\u5728\u50bb\u50bb\u7b49\u5f85\u6570\u636e).<\/p>\n<\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (12<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : wish198 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6309\u4f60\u8fd9\u4e2a\u8bf4\u6cd5,\u4f60\u5ba2\u6237\u7aef\u5f97\u81ea\u5df1\u5224\u65ad\u51fa\u6765\u4e3b\u52a8\u5173\u95ed\u5440,TCP \u56db\u6b21\u6325\u624b\u770b\u4e0b <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : Mohanson <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @wish198 \u6211\u770b\u8fc7 TCP \u6325\u624b\u8fc7\u7a0b, FIN_WAIT1 \u662f\u7b49\u5f85\u5bf9\u65b9 ACK. \u6211\u76ee\u524d\u53d1\u73b0\u5b58\u5728\u9898\u76ee\u63cf\u8ff0\u7684\u73b0\u8c61, \u4f46\u662f\u65e0\u6cd5\u5728\u4e92\u8054\u7f51\u4e0a\u627e\u5230\u786e\u5207\u7684\u6587\u5b57\u8d44\u6599\u6765\u8bc1\u660e\u8fd9\u79cd\u73b0\u8c61, \u56e0\u6b64\u6765\u95ee\u4e00\u4e0b\u770b\u770b\u662f\u5426\u6709\u5927\u4f6c\u80fd\u63d0\u4f9b\u4e0b\u6587\u5b57\u8d44\u6599 \/Spec \u7b49\u7b49\u7684\u4e1c\u897f\u8bc1\u660e\u6211\u7684\u731c\u6d4b\u662f\u6b63\u786e\u7684\u8fd8\u662f\u9519\u8bef\u7684… <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : lhx2008 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5982\u679c\u5ba2\u6237\u7aef\u6ca1\u6536\u5230 \uff0c\u5c31\u4e0d\u4f1a\u786e\u8ba4\u76f8\u5173\u7684\u4fe1\u606f\uff0c\u670d\u52a1\u7aef\u90a3\u8fb9\u5c31\u8d85\u65f6\uff0c\u4f1a\u91cd\u53d1 Close <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : alcarl <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6709\u53ef\u80fd\u5bf9\u9762\u7684\u9632\u706b\u5899\u628a\u4f60\u53d1\u8fc7\u53bb\u7684 fin \u5305\u8fc7\u6ee4\u4e86\uff0c\u5bf9\u9762\u5e94\u7528\u6ca1\u6709\u6536\u5230\u4f60\u7684 fin\uff0c\u7f51\u7edc\u4e0a\u6ca1\u6709\u5176\u4ed6\u4e1c\u897f\u7684\u8bdd\uff0cfinwait1 \u9636\u6bb5\u662f\u5185\u6838\u63a7\u5236\u7684\u5bf9\u9762\u4e5f\u662f\u5185\u6838\u63a7\u5236\uff0c\u5e94\u8be5\u4f1a\u81ea\u5df1\u8fc7\u5ea6\u5230 finwait2\uff0c\u5bf9\u9762\u8fc7\u5ea6\u5230 closewait\uff0c\u7136\u540e\u624d\u662f\u5bf9\u9762\u5e94\u7528\u5904\u7406\u3002\u6ca1\u8fdb closewait \u5ba2\u6237\u7aef\u5f53\u7136\u8bfb\u4e0d\u5230 eof <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : alcarl <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @Mohanson \u641c\u7d22 tcp \u56db\u6b21\u6325\u624b\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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    \u8cc7\u6df1\u5927\u4f6c : unixeno <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u67e5\u4e86\u4e00\u4e0b\u8fd9\u4e2a\u95ee\u9898\uff0c\u4f60\u53ef\u4ee5\u770b\u770b\u8fd9\u4e2a https:\/\/blog.huoding.com\/2014\/11\/06\/383\uff0c\u8fd8\u6709\u8fd9\u4e2a https:\/\/blog.csdn.net\/dog250\/article\/details\/81697403<\/p>\n

    \u5728\u4f60\u670d\u52a1\u7aef close \u4e4b\u540e\uff0c\u8fde\u63a5\u4f1a\u7acb\u5373\u8fdb\u5165 FIN_WAIT1 \u72b6\u6001\uff0c\u5982\u679c\u5ba2\u6237\u7aef\u7684\u63a5\u6536\u7f13\u51b2\u533a\u91cc\u8fd8\u6709\u6570\u636e\uff0cFIN \u662f\u4e0d\u4f1a\u5f71\u54cd\u5ba2\u6237\u7aef\u8bfb\u53d6\u7684\u3002
    \u800c\u4e14\u5982\u679c\u5ba2\u6237\u7aef\u4e00\u76f4\u4e0d\u63a5\u6536\u6570\u636e\uff0c\u4ee5\u81f3\u4e8e\u5ba2\u6237\u7aef\u63a5\u6536\u961f\u5217\u6ee1\u4e86\uff0c\u670d\u52a1\u7aef\u7684 FIN \u662f\u53d1\u4e0d\u51fa\u53bb\u7684\uff0c\u8fd9\u4e2a\u94fe\u63a5\u4f1a\u4e00\u76f4\u5904\u4e8e FIN_WAIT1 \u72b6\u6001\uff0c\u53ea\u6709\u91cd\u542f\u7cfb\u7edf\u6216\u8005\u7b49\u5f85\u96f6\u7a97\u53e3\u63a2\u6d4b\u5305\u8d85\u8fc7 tcp_orphan_retries \u53c2\u6570\u9650\u5236\u65f6\u89e6\u53d1\u9500\u6bc1\u8fde\u63a5 <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : Mohanson <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @unixeno \u8c22\u8c22\uff0c\u6709\u4e2a\u95ee\u9898\u54c8\uff0c\u5982\u679c fin \u5305\u88ab\u62e6\u622a\uff0c\u90a3 tcp \u5bf9\u7aef\u662f\u5426\u6c38\u8fdc\u4e5f\u4e0d\u77e5\u9053\u8fd9\u4e2a\u94fe\u63a5\u88ab\u5173\u95ed\u4e86\u5462\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : bitcross <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @Mohanson \u5bf9\uff0c\u6240\u4ee5\u624d\u6709\u7684 keepalive \u7684\u8bbe\u8ba1\uff0c\u53ca\u65f6\u68c0\u6d4b\u51fa\u5df2\u7ecf\u201d\u4e0d\u53ef\u8fbe\u201d\u7684 session<\/p>\n

    \u5efa\u8bae\u4f60\u7528 wireshark \u4e4b\u7c7b\u7684\u6293\u5305\u5de5\u5177\u5728\u5ba2\u6237\u7aef\u6293\u4e00\u4e0b\u5305\uff0c\u770b\u770b fin \u5305\u5230\u5e95\u6709\u6ca1\u9001\u8fc7\u6765
    \u6ca1\u6709\u7684\u8bdd\u5341\u6709\u516b\u4e5d\u5c31\u662f\u8def\u7531\u5668\uff0c\u9632\u706b\u5899\u4e4b\u7c7b\u7684\u7ed9\u62e6\u622a\u4e86\uff0c\u8fd9\u5c31\u8981\u5728\u8fd9\u4e9b\u7f51\u7edc\u8bbe\u5907\u91cc\u68c0\u67e5\u6570\u636e\u5305\u65e5\u5fd7\u4e86 <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : Mohanson <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @bitcross \u597d\u7684, \u8c22\u8c22! <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : unixeno <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @Mohanson \u4e5f\u53ef\u4ee5\uff0c\u9700\u8981\u4f60\u5411\u5bf9\u65b9\u53d1\u9001\u6570\u636e\uff0c\u8fde\u63a5\u4e0d\u5b58\u5728\u7684\u65f6\u5019\u4f1a\u76f4\u63a5 reset<\/p>\n

    \u4e0d\u901a\u4fe1\u7684\u60c5\u51b5\u4e0b\uff0c\u90a3\u80af\u5b9a\u662f\u6ca1\u529e\u6cd5\u77e5\u9053\u5bf9\u65b9\u662f\u4e0d\u662f\u8fd8\u5728\u7ebf\u7684 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : Buges <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5173\u952e\u8bcd\uff1aclose()\u4e0e shutdown()\u7684\u533a\u522b\uff0c\u81ea\u5df1\u53bb\u641c\u5427\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : wish198 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @Mohanson TCP \u662f\u6709\u534a\u5173\u95ed\u7684,\u4f60\u627e\u4e2a Wireshark \u6293\u4e00\u4e0b\u5305\u5c31\u660e\u767d\u4e86,\u4e0d\u662f\u670d\u52a1\u5668\u53d1\u6765 Fin,\u4f60\u7684\u5ba2\u6237\u7aef\u5c31\u8981\u81ea\u5df1\u5173\u95ed <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    TCP \u8fde\u63a5\u4e2d\u670d\u52a1\u7aef\u957f\u65f6\u95f4\u5904\u4e8e F…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/127988"}],"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=127988"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/127988\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=127988"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=127988"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=127988"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}