{"id":3343,"date":"2024-03-24T04:56:56","date_gmt":"2024-03-23T20:56:56","guid":{"rendered":"http:\/\/www.ccwifi.cc\/blogs\/?p=3343"},"modified":"2024-03-24T04:56:56","modified_gmt":"2024-03-23T20:56:56","slug":"%e4%bf%9d%e5%ad%98%e6%8f%a1%e6%89%8b%e5%8c%85%e5%8a%a8%e5%9b%be%e5%9b%be%e8%a7%a3%e6%b2%a1%e6%9c%89accept6818","status":"publish","type":"post","link":"https:\/\/www.ccwifi.cc\/blogs\/2024\/03\/24\/%e4%bf%9d%e5%ad%98%e6%8f%a1%e6%89%8b%e5%8c%85%e5%8a%a8%e5%9b%be%e5%9b%be%e8%a7%a3%e6%b2%a1%e6%9c%89accept6818\/","title":{"rendered":"\u4fdd\u5b58\u63e1\u624b\u5305 \u52a8\u56fe\u56fe\u89e3\uff01\u6ca1\u6709accept\uff0c\u80fd\u5efa\u7acbTCP\u8fde\u63a5\u5417\uff1f"},"content":{"rendered":"
\n

\u5728\u7ebfwifi\u8dd1\u5305 \u91d1\u521a\u5305\u8dd1\u5305 cap\u8dd1\u5305 hccapx ewsa\u5728\u7ebf \u5c31\u6765 \u63e1\u624b\u5305\u8dd1\u5305<\/a><\/strong><\/p>\n

\u5404\u4f4d\u597d \u53c8\u89c1\u9762\u4e86 \u6211\u662f\u66f9\u64cd \u4eca\u5929\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\u65b0\u7684\u6559\u7a0b<\/p>\n

\u5e0c\u671b\u5404\u4f4d\u7ec6\u5fc3\u5b66\u4e60 \u4f4e\u8c03\u7528\u7f51<\/p>\n<\/div>\n

\"\u4fdd\u5b58\u63e1\u624b\u5305\"<\/p>\n

int<\/span> main<\/span>()<\/span>
<\/span>{
    \/*Step 1: \u521b\u5efa\u670d\u52a1\u5668\u7aef\u76d1\u542csocket\u63cf\u8ff0\u7b26listen_fd*\/<\/span>    
    listen_fd = socket(AF_INET, SOCK_STREAM, 0<\/span>);

    \/*Step 2: bind\u7ed1\u5b9a\u670d\u52a1\u5668\u7aef\u7684IP\u548c\u7aef\u53e3\uff0c\u6240\u6709\u5ba2\u6237\u7aef\u90fd\u5411\u8fd9\u4e2aIP\u548c\u7aef\u53e3\u53d1\u9001\u548c\u8bf7\u6c42\u6570\u636e*\/<\/span>    
    bind(listen_fd, xxx);

    \/*Step 3: \u670d\u52a1\u7aef\u5f00\u542f\u76d1\u542c*\/<\/span>    
    listen(listen_fd, 128<\/span>);

    \/*Step 4: \u670d\u52a1\u5668\u7b49\u5f85\u5ba2\u6237\u7aef\u7684\u94fe\u63a5\uff0c\u8fd4\u56de\u503ccfd\u4e3a\u5ba2\u6237\u7aef\u7684socket\u63cf\u8ff0\u7b26*\/<\/span>    
    cfd = accept(listen_fd, xxx);

      \/*Step 5: \u8bfb\u53d6\u5ba2\u6237\u7aef\u53d1\u6765\u7684\u6570\u636e*\/<\/span>
      n = read(cfd, buf, sizeof<\/span>(buf));
}
<\/code><\/pre>\n
int<\/span> main<\/span>()<\/span>
<\/span>{
    \/*Step 1: \u521b\u5efa\u5ba2\u6237\u7aef\u7aefsocket\u63cf\u8ff0\u7b26cfd*\/<\/span>    
    cfd = socket(AF_INET, SOCK_STREAM, 0<\/span>);

    \/*Step 2: connect\u65b9\u6cd5,\u5bf9\u670d\u52a1\u5668\u7aef\u7684IP\u548c\u7aef\u53e3\u53f7\u53d1\u8d77\u8fde\u63a5*\/<\/span>    
    ret = connect(cfd, xxxx);

    \/*Step 4: \u5411\u670d\u52a1\u5668\u7aef\u5199\u6570\u636e*\/<\/span>
    write(cfd, buf, strlen<\/span>(buf));
}
<\/code><\/pre>\n
\u91cd\u65b0\u6784\u5efa\u8fde\u63a5\u5efa\u7acb\u6d41\u7a0b\u7684\u6587\u7ae0\uff1a<\/p>\n
\u5728\u4e0b\u9762\u7684\u52a8\u56fe\u4e2d\uff0c\u5c55\u793a\u4e86\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u7aef\u5efa\u7acb\u8fde\u63a5\u65f6\u7684\u4ee3\u7801\u6d41\u7a0b\u3002\u8fd9\u6bb5\u4f2a\u4ee3\u7801\u662f\u670d\u52a1\u7aef\u7684\u7b80\u5316\u7248\u672c\uff0c\u5927\u5bb6\u5e94\u8be5\u5bf9\u5b83\u975e\u5e38\u719f\u6089\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5728\u6267\u884clisten()\u65b9\u6cd5\u540e\uff0c\u8fd8\u4f1a\u6267\u884caccept()\u65b9\u6cd5\u3002\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u5f53\u542f\u52a8\u670d\u52a1\u5668\u65f6\uff0c\u6211\u4eec\u4f1a\u53d1\u73b0\u7a0b\u5e8f\u6700\u540e\u4f1a\u963b\u585e\u5728accept()\u65b9\u6cd5\u4e2d\u3002\u6b64\u65f6\uff0c\u670d\u52a1\u7aef\u5df2\u7ecf\u51c6\u5907\u5c31\u7eea\uff0c\u53ea\u7b49\u5f85\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u3002\u73b0\u5728\uff0c\u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e0b\u7b80\u5316\u7684\u5ba2\u6237\u7aef\u4f2a\u4ee3\u7801\u3002<\/p>\n
\"\u4fdd\u5b58\u63e1\u624b\u5305\"<\/p>\n
\u5ba2\u6237\u7aef\u7684\u4ee3\u7801\u76f8\u5bf9\u7b80\u5355\uff0c\u521b\u5efasocket\u540e\uff0c\u76f4\u63a5\u53d1\u8d77connect\u65b9\u6cd5\u3002\u6b64\u65f6\uff0c\u670d\u52a1\u7aef\u4f1a\u53d1\u73b0\u4e4b\u524d\u4e00\u76f4\u963b\u585e\u7684accept\u65b9\u6cd5\u8fd4\u56de\u7ed3\u679c\u4e86\u3002\u8fd9\u6837\uff0c\u4e24\u7aef\u6210\u529f\u5efa\u7acb\u4e86\u8fde\u63a5\uff0c\u968f\u540e\u53ef\u4ee5\u6109\u5feb\u5730\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\u3002\u90a3\u4e48\uff0c\u6211\u4eec\u4eca\u5929\u7684\u95ee\u9898\u662f\uff0c\u5982\u679c\u6ca1\u6709accept\u65b9\u6cd5\uff0cTCP\u8fde\u63a5\u8fd8\u80fd\u5efa\u7acb\u8d77\u6765\u5417\uff1f\u5b9e\u9645\u4e0a\uff0c\u53ea\u8981\u5728\u6267\u884caccept()\u4e4b\u524d\u52a0\u5165\u4e00\u4e2asleep(20)\u7684\u5ef6\u8fdf\uff0c\u5e76\u7acb\u5373\u6267\u884c\u5ba2\u6237\u7aef\u76f8\u5173\u7684\u65b9\u6cd5\uff0c\u540c\u65f6\u6293\u5305\u89c2\u5bdf\uff0c\u6211\u4eec\u5c31\u80fd\u5f97\u51fa\u7ed3\u8bba\u3002<\/p>\n
\"\u4fdd\u5b58\u63e1\u624b\u5305\"<\/p>\n
\u5728\u4e0d\u6267\u884caccept\u65f6\u7684\u6293\u5305\u7ed3\u679c\u663e\u793a\uff0c\u5373\u4f7f\u4e0d\u6267\u884caccept()\u65b9\u6cd5\uff0c\u4e09\u6b21\u63e1\u624b\u4ecd\u7136\u4f1a\u6b63\u5e38\u8fdb\u884c\uff0c\u5e76\u6210\u529f\u5efa\u7acb\u8fde\u63a5\u3002\u66f4\u6709\u8da3\u7684\u662f\uff0c\u5728\u670d\u52a1\u7aef\u6267\u884caccept()\u4e4b\u524d\uff0c\u5982\u679c\u5ba2\u6237\u7aef\u5411\u670d\u52a1\u7aef\u53d1\u9001\u6d88\u606f\uff0c\u670d\u52a1\u7aef\u4ecd\u7136\u80fd\u591f\u6b63\u5e38\u56de\u590dACK\u786e\u8ba4\u5305\u3002\u800c\u4e14\uff0c\u5f53sleep(20)\u7ed3\u675f\u540e\uff0c\u670d\u52a1\u7aef\u6b63\u5e38\u6267\u884caccept()\uff0c\u4e4b\u524d\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u6d88\u606f\u4ecd\u7136\u80fd\u591f\u6b63\u5e38\u63a5\u6536\u3002\u901a\u8fc7\u8fd9\u4e2a\u73b0\u8c61\uff0c\u6211\u4eec\u53ef\u4ee5\u8fdb\u4e00\u6b65\u601d\u8003\u539f\u56e0\uff0c\u5e76\u6df1\u5165\u4e86\u89e3\u4e09\u6b21\u63e1\u624b\u7684\u7ec6\u8282\u3002<\/p>\n
\"\u4fdd\u5b58\u63e1\u624b\u5305\"<\/p>\n
TCP\u7684\u4e09\u6b21\u63e1\u624b\u662f\u4e00\u79cd\u7ecf\u5178\u7684\u9762\u8bd5\u9898\u3002\u670d\u52a1\u7aef\u7684\u4ee3\u7801\u4e2d\uff0c\u901a\u8fc7\u6267\u884cbind\u65b9\u6cd5\u53ef\u4ee5\u7ed1\u5b9a\u76d1\u542c\u7aef\u53e3\uff0c\u7136\u540e\u6267\u884clisten\u65b9\u6cd5\uff0c\u8fdb\u5165\u76d1\u542c\uff08LISTEN\uff09\u72b6\u6001\u3002\u5185\u6838\u4f1a\u4e3a\u6bcf\u4e2a\u5904\u4e8eLISTEN\u72b6\u6001\u7684socket\u5206\u914d\u4e24\u4e2a\u961f\u5217\uff0c\u5206\u522b\u662f\u534a\u8fde\u63a5\u961f\u5217\u548c\u5168\u8fde\u63a5\u961f\u5217\u3002<\/p>\n
\"\u4fdd\u5b58\u63e1\u624b\u5305\"\"\u4fdd\u5b58\u63e1\u624b\u5305\"<\/p>\n
\u6bcf\u4e2alisten Socket\u90fd\u6709\u4e00\u4e2a\u5168\u8fde\u63a5\u961f\u5217\u548c\u534a\u8fde\u63a5\u961f\u5217\u3002\u90a3\u4e48\uff0c\u534a\u8fde\u63a5\u961f\u5217\u548c\u5168\u8fde\u63a5\u961f\u5217\u5230\u5e95\u662f\u4ec0\u4e48\u5462\uff1f<\/p>\n
\u534a\u8fde\u63a5\u961f\u5217\u548c\u5168\u8fde\u63a5\u961f\u5217\u662f\u4e24\u4e2a\u4e0d\u540c\u7684\u961f\u5217\u3002\u5168\u8fde\u63a5\u961f\u5217\uff08icskaccept<\/em>queue\uff09\u5b9e\u9645\u4e0a\u662f\u4e00\u4e2a\u94fe\u8868\uff0c\u800c\u534a\u8fde\u63a5\u961f\u5217\uff08syn_table\uff09\u5219\u662f\u4e00\u4e2a\u54c8\u5e0c\u8868\u3002<\/p>\n
# ss -lnt<\/span>
State      Recv-Q Send-Q     Local Address:Port           Peer Address:Port
LISTEN     0      128        127.0.0.1:46269              *:*              
<\/code><\/pre>\n
\u534a\u8fde\u63a5\u961f\u5217\u88ab\u8bbe\u8ba1\u4e3a\u54c8\u5e0c\u8868\u7684\u539f\u56e0\u662f\u4ec0\u4e48\u5462\uff1f<\/p>\n
\u6211\u4eec\u5148\u6765\u5bf9\u6bd4\u4e00\u4e0b\u5168\u8fde\u63a5\u961f\u5217\u3002\u5168\u8fde\u63a5\u961f\u5217\u672c\u8d28\u4e0a\u662f\u4e00\u4e2a\u94fe\u8868\uff0c\u56e0\u4e3a\u5b83\u662f\u7ebf\u6027\u7ed3\u6784\uff0c\u6240\u4ee5\u79f0\u4e4b\u4e3a\u961f\u5217\u662f\u5408\u7406\u7684\u3002\u5168\u8fde\u63a5\u961f\u5217\u4e2d\u5b58\u653e\u7684\u662f\u5df2\u7ecf\u5efa\u7acb\u5b8c\u6210\u7684\u8fde\u63a5\uff0c\u8fd9\u4e9b\u8fde\u63a5\u6b63\u5728\u7b49\u5f85\u88ab\u53d6\u8d70\u3002\u670d\u52a1\u7aef\u5728\u53d6\u8d70\u8fde\u63a5\u65f6\uff0c\u5e76\u4e0d\u5173\u5fc3\u5177\u4f53\u662f\u54ea\u4e2a\u8fde\u63a5\uff0c\u53ea\u8981\u662f\u8fde\u63a5\u5c31\u53ef\u4ee5\uff0c\u6240\u4ee5\u76f4\u63a5\u4ece\u961f\u5217\u5934\u90e8\u53d6\u51fa\u5373\u53ef\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u7684\u7b97\u6cd5\u590d\u6742\u5ea6\u662fO(1)\u3002<\/p>\n
\u800c\u534a\u8fde\u63a5\u961f\u5217\u4e0d\u540c\uff0c\u56e0\u4e3a\u961f\u5217\u4e2d\u5b58\u653e\u7684\u90fd\u662f\u4e0d\u5b8c\u6574\u7684\u8fde\u63a5\uff0c\u5b83\u4eec\u6b63\u5728\u7b49\u5f85\u7b2c\u4e09\u6b21\u63e1\u624b\u7684\u5230\u6765\u3002\u5982\u679c\u534a\u8fde\u63a5\u961f\u5217\u4e5f\u662f\u4e00\u4e2a\u94fe\u8868\uff0c\u90a3\u4e48\u5728\u53d6\u51fa\u76f8\u5e94IP\u7aef\u53e3\u7684\u8fde\u63a5\u65f6\uff0c\u5c31\u9700\u8981\u4f9d\u6b21\u904d\u5386\uff0c\u7b97\u6cd5\u590d\u6742\u5ea6\u5c06\u662fO(n)\u3002<\/p>\n
\u7136\u800c\uff0c\u5982\u679c\u5c06\u534a\u8fde\u63a5\u961f\u5217\u8bbe\u8ba1\u4e3a\u54c8\u5e0c\u8868\uff0c\u90a3\u4e48\u67e5\u627e\u534a\u8fde\u63a5\u7684\u7b97\u6cd5\u590d\u6742\u5ea6\u5c06\u56de\u5230O(1)\u3002\u56e0\u6b64\uff0c\u51fa\u4e8e\u6548\u7387\u8003\u8651\uff0c\u5168\u8fde\u63a5\u961f\u5217\u88ab\u8bbe\u8ba1\u4e3a\u94fe\u8868\uff0c\u800c\u534a\u8fde\u63a5\u961f\u5217\u88ab\u8bbe\u8ba1\u4e3a\u54c8\u5e0c\u8868\u3002<\/p>\n
\u5982\u4f55\u67e5\u770b\u4e24\u4e2a\u961f\u5217\u7684\u5927\u5c0f\uff1f<\/p>\n
\u901a\u8fc7\u6267\u884css -lnt\u547d\u4ee4\uff0c\u6211\u4eec\u53ef\u4ee5\u67e5\u770b\u5168\u8fde\u63a5\u961f\u5217\u7684\u5927\u5c0f\u3002\u5176\u4e2d\uff0cSend-Q\u8868\u793a\u5168\u8fde\u63a5\u961f\u5217\u7684\u6700\u5927\u503c\uff0c\u53ef\u4ee5\u770b\u5230\u6211\u8fd9\u91cc\u7684\u6700\u5927\u503c\u662f128\uff1bRecv-Q\u8868\u793a\u5f53\u524d\u5168\u8fde\u63a5\u961f\u5217\u7684\u4f7f\u7528\u503c\uff0c\u6211\u8fd9\u91cc\u4f7f\u7528\u4e860\u4e2a\uff0c\u4e5f\u5c31\u662f\u5168\u8fde\u63a5\u961f\u5217\u4e3a\u7a7a\uff0c\u6240\u6709\u8fde\u63a5\u90fd\u5df2\u88ab\u53d6\u8d70\u3002<\/p>\n
\u5f53Send-Q\u548cRecv-Q\u7684\u6570\u503c\u975e\u5e38\u63a5\u8fd1\u65f6\uff0c\u8bf4\u660e\u5168\u8fde\u63a5\u961f\u5217\u53ef\u80fd\u5df2\u7ecf\u6ee1\u4e86\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4e0b\u9762\u7684\u547d\u4ee4\u6765\u67e5\u770b\u662f\u5426\u53d1\u751f\u8fc7\u961f\u5217\u6ea2\u51fa\u3002<\/p>\n
# watch -d 'netstat -s | grep overflowed'<\/span>
Every 2.0s: netstat -s | grep overflowed                                Fri Sep 17 09:00:45 2021

    4343 times<\/span> the listen queue of a socket overflowed
<\/code><\/pre>\n
\u4e0a\u9762\u7684\u7ed3\u679c\u663e\u793a\uff0c\u5168\u8fde\u63a5\u961f\u5217\u6ea2\u51fa\u7684\u6b21\u6570\u4e3a4343\u6b21\u3002\u8fd9\u4e2a\u7ed3\u679c\u662f\u5386\u53f2\u4e0a\u53d1\u751f\u7684\u6b21\u6570\u3002<\/p>\n
\u5982\u679c\u914d\u5408\u4f7f\u7528watch -d\u547d\u4ee4\uff0c\u53ef\u4ee5\u6bcf2\u79d2\u81ea\u52a8\u6267\u884c\u76f8\u540c\u7684\u547d\u4ee4\uff0c\u5e76\u4ee5\u9ad8\u4eae\u663e\u793a\u53d8\u5316\u7684\u6570\u5b57\u90e8\u5206\u3002\u5982\u679c\u6ea2\u51fa\u7684\u6570\u5b57\u4e0d\u65ad\u589e\u52a0\uff0c\u8bf4\u660e\u6b63\u5728\u53d1\u751f\u961f\u5217\u6ea2\u51fa\u7684\u60c5\u51b5\u3002<\/p>\n
# netstat -nt | grep -i '127.0.0.1:8080' | grep -i 'SYN_RECV' | wc -l<\/span>
0
<\/code><\/pre>\n
# netstat -s | grep -i \"SYNs to LISTEN sockets dropped\" <\/span>
    26395 SYNs to LISTEN sockets dropped
<\/code><\/pre>\n
\u5982\u4f55\u67e5\u770b\u534a\u8fde\u63a5\u961f\u5217\uff1f<\/p>\n
\u6ca1\u6709\u76f4\u63a5\u7684\u547d\u4ee4\u53ef\u4ee5\u76f4\u63a5\u67e5\u770b\u534a\u8fde\u63a5\u961f\u5217\uff0c\u4f46\u662f\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u7edf\u8ba1\u5904\u4e8eSYN_RECV\u72b6\u6001\u7684\u8fde\u63a5\u6570\u91cf\u6765\u95f4\u63a5\u83b7\u5f97\u534a\u8fde\u63a5\u961f\u5217\u7684\u957f\u5ea6\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u534a\u8fde\u63a5\u961f\u5217\u548c\u5168\u8fde\u63a5\u961f\u5217\u90fd\u662f\u6302\u5728\u67d0\u4e2aListen socket\u4e0a\u7684\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u4f7f\u7528\u7684\u662f127.0.0.1:8080\uff0c\u8bf7\u6839\u636e\u9700\u8981\u66ff\u6362\u4e3a\u60a8\u60f3\u8981\u67e5\u770b\u7684IP\u7aef\u53e3\u3002<\/p>\n
\u53ef\u4ee5\u770b\u5230\uff0c\u6211\u7684\u673a\u5668\u4e0a\u534a\u8fde\u63a5\u961f\u5217\u7684\u957f\u5ea6\u4e3a0\uff0c\u8fd9\u662f\u6b63\u5e38\u7684\u60c5\u51b5\u3002\u6b63\u5e38\u7684\u8fde\u63a5\u4e0d\u4f1a\u4e00\u76f4\u5f85\u5728\u534a\u8fde\u63a5\u961f\u5217\u4e2d\u3002\u5f53\u534a\u8fde\u63a5\u961f\u5217\u4e2d\u7684\u8fde\u63a5\u4e0d\u65ad\u589e\u52a0\u65f6\uff0c\u6700\u7ec8\u4e5f\u4f1a\u53d1\u751f\u6ea2\u51fa\u3002\u53ef\u4ee5\u901a\u8fc7\u4e0b\u9762\u7684\u547d\u4ee4\u6765\u67e5\u770b\u3002<\/p>\n
# watch -d 'netstat -s | grep -i \"SYNs to LISTEN sockets dropped\"'<\/span>
Every 2.0s: netstat -s | grep -i \"SYNs to LISTEN sockets dropped\"<\/span>       Fri Sep 17 08:36:38 2021

    26395 SYNs to LISTEN sockets dropped
<\/code><\/pre>\n
# cat \/proc\/sys\/net\/ipv4\/tcp_abort_on_overflow<\/span>
0
<\/code><\/pre>\n
\u53ef\u4ee5\u770b\u5230\uff0c\u6211\u7684\u673a\u5668\u4e0a\u5171\u53d1\u751f\u4e8626395\u6b21\u534a\u8fde\u63a5\u961f\u5217\u6ea2\u51fa\u3002\u540c\u6837\u5efa\u8bae\u914d\u5408watch -d\u547d\u4ee4\u4f7f\u7528\uff0c\u4ee5\u81ea\u52a8\u6267\u884c\u5e76\u9ad8\u4eae\u663e\u793a\u53d8\u5316\u7684\u6570\u5b57\u90e8\u5206\u3002\u5982\u679c\u6ea2\u51fa\u7684\u6570\u5b57\u4e0d\u65ad\u589e\u52a0\uff0c\u8bf4\u660e\u6b63\u5728\u53d1\u751f\u6ea2\u51fa\u7684\u884c\u4e3a\u3002<\/p>\n
\u5168\u8fde\u63a5\u961f\u5217\u6ee1\u4e86\u4f1a\u53d1\u751f\u4ec0\u4e48\uff1f<\/p>\n
\u5982\u679c\u5168\u8fde\u63a5\u961f\u5217\u5df2\u6ee1\uff0c\u670d\u52a1\u7aef\u6536\u5230\u5ba2\u6237\u7aef\u7684\u7b2c\u4e09\u6b21\u63e1\u624bACK\u65f6\uff0c\u9ed8\u8ba4\u4f1a\u4e22\u5f03\u8fd9\u4e2aACK\u3002\u9664\u4e86\u4e22\u5f03\u4e4b\u5916\uff0c\u8fd8\u4f1a\u6709\u4e00\u4e9b\u9644\u5e26\u884c\u4e3a\uff0c\u8fd9\u53d6\u51b3\u4e8etcpabort<\/em>on_overflow\u53c2\u6570\u7684\u8bbe\u7f6e\u3002<\/p>\n
\u5f53tcpabort<\/em>on_overflow\u4e3a0\u65f6\uff0c\u53d1\u751f\u7684\u73b0\u8c61\u662f\u670d\u52a1\u7aef\u4f1a\u56de\u590d\u4e00\u4e2aRST\uff0c\u8fd9\u4e0e\u5f53\u670d\u52a1\u7aef\u7aef\u53e3\u672a\u76d1\u542c\u65f6\uff0c\u5ba2\u6237\u7aef\u5c1d\u8bd5\u8fde\u63a5\u65f6\u7684\u884c\u4e3a\u662f\u4e00\u6837\u7684\u3002\u8fd9\u4e24\u79cd\u60c5\u51b5\u770b\u8d77\u6765\u662f\u4e00\u6837\u7684\uff0c\u6240\u4ee5\u5f53\u5ba2\u6237\u7aef\u6536\u5230RST\u540e\uff0c\u65e0\u6cd5\u533a\u5206\u662f\u7aef\u53e3\u672a\u76d1\u542c\u8fd8\u662f\u5168\u8fde\u63a5\u961f\u5217\u5df2\u6ee1\u3002<\/p>\n
\u5f53tcpabort<\/em>on_overflow\u4e3a1\u65f6\uff0c\u534a\u8fde\u63a5\u961f\u5217\u6ee1\u4e86\u4f1a\u53d1\u751f\u4ec0\u4e48\uff1f<\/p>\n
\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u534a\u8fde\u63a5\u961f\u5217\u4f1a\u88ab\u4e22\u5f03\uff0c\u4f46\u8fd9\u4e2a\u884c\u4e3a\u53ef\u4ee5\u901a\u8fc7tcp_syncookies\u53c2\u6570\u8fdb\u884c\u63a7\u5236\u3002\u7136\u800c\uff0c\u4e0e\u5176\u5173\u6ce8\u8fd9\u4e2a\u53c2\u6570\uff0c\u66f4\u91cd\u8981\u7684\u662f\u5148\u4e86\u89e3\u4e00\u4e0b\u4e3a\u4ec0\u4e48\u534a\u8fde\u63a5\u961f\u5217\u4f1a\u88ab\u6253\u6ee1\u3002<\/p>\n
\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u660e\u767d\uff0c\u534a\u8fde\u63a5\u7684\u201c\u751f\u5b58\u201d\u65f6\u95f4\u901a\u5e38\u5f88\u77ed\uff0c\u53ea\u5728\u7b2c\u4e00\u6b21\u548c\u7b2c\u4e09\u6b21\u63e1\u624b\u4e4b\u95f4\u5b58\u5728\u3002\u5982\u679c\u534a\u8fde\u63a5\u961f\u5217\u88ab\u6253\u6ee1\uff0c\u8bf4\u660e\u670d\u52a1\u7aef\u75af\u72c2\u5730\u6536\u5230\u7b2c\u4e00\u6b21\u63e1\u624b\u8bf7\u6c42\u3002\u5982\u679c\u662f\u5728\u7ebf\u6e38\u620f\u5e94\u7528\uff0c\u80fd\u6709\u8fd9\u4e48\u591a\u8bf7\u6c42\u8fdb\u6765\uff0c\u90a3\u8bf4\u660e\u4f60\u53ef\u80fd\u8981\u53d1\u8d22\u4e86\u3002\u4f46\u73b0\u5b9e\u5f80\u5f80\u6bd4\u8f83\u6b8b\u9177\uff0c\u4f60\u53ef\u80fd\u9047\u5230\u4e86SYN Flood\u653b\u51fb\u3002<\/p>\n
\u6240\u8c13\u7684SYN Flood\u653b\u51fb\uff0c\u7b80\u5355\u6765\u8bf4\uff0c\u653b\u51fb\u65b9\u6a21\u62df\u5ba2\u6237\u7aef\u4e0d\u65ad\u53d1\u9001\u7b2c\u4e00\u6b21\u63e1\u624b\u8bf7\u6c42\uff0c\u800c\u5728\u670d\u52a1\u7aef\u56de\u590d\u7b2c\u4e8c\u6b21\u63e1\u624b\u540e\uff0c\u653b\u51fb\u65b9\u5374\u4e0d\u53d1\u9001\u7b2c\u4e09\u6b21\u63e1\u624b\uff0c\u8fd9\u6837\u505a\u53ef\u4ee5\u5c06\u670d\u52a1\u7aef\u7684\u534a\u8fde\u63a5\u961f\u5217\u586b\u6ee1\uff0c\u5bfc\u81f4\u6b63\u5e38\u8fde\u63a5\u65e0\u6cd5\u5efa\u7acb\u3002<\/p>\n
\u90a3\u4e48\uff0c\u5982\u4f55\u5904\u7406\u8fd9\u79cd\u60c5\u51b5\uff1f\u6709\u6ca1\u6709\u4e00\u79cd\u65b9\u6cd5\u53ef\u4ee5\u7ed5\u8fc7\u534a\u8fde\u63a5\u961f\u5217\uff1f<\/p>\n
\u6709\uff0c\u8fd9\u5c31\u662f\u4e4b\u524d\u63d0\u5230\u7684tcp_syncookies\u6d3e\u4e0a\u7528\u573a\u4e86\u3002<\/p>\n
\u5f53tcp_syncookies\u88ab\u8bbe\u7f6e\u4e3a1\u65f6\uff0c\u670d\u52a1\u7aef\u5728\u6536\u5230\u5ba2\u6237\u7aef\u7684\u7b2c\u4e00\u6b21\u63e1\u624bSYN\u65f6\uff0c\u4e0d\u4f1a\u5c06\u5176\u653e\u5165\u534a\u8fde\u63a5\u961f\u5217\uff0c\u800c\u662f\u76f4\u63a5\u751f\u6210\u4e00\u4e2acookies\uff0c\u5e76\u5c06\u5176\u968f\u7b2c\u4e8c\u6b21\u63e1\u624b\u4e00\u8d77\u53d1\u9001\u56de\u5ba2\u6237\u7aef\u3002\u5f53\u5ba2\u6237\u7aef\u53d1\u9001\u7b2c\u4e09\u6b21\u63e1\u624b\u65f6\uff0c\u4f1a\u643a\u5e26\u8fd9\u4e2acookies\uff0c\u670d\u52a1\u7aef\u9a8c\u8bc1\u5b83\u662f\u5426\u4e0e\u4e4b\u524d\u53d1\u9001\u7684\u4e00\u81f4\uff0c\u5982\u679c\u4e00\u81f4\uff0c\u5c31\u5efa\u7acb\u8fde\u63a5\u5e76\u5c06\u5176\u653e\u5165\u5168\u8fde\u63a5\u961f\u5217\u4e2d\u3002\u53ef\u4ee5\u770b\u51fa\uff0c\u6574\u4e2a\u8fc7\u7a0b\u4e0d\u518d\u9700\u8981\u534a\u8fde\u63a5\u961f\u5217\u7684\u53c2\u4e0e\u3002<\/p>\n
tcp_syncookies=1\u65f6\uff0c\u662f\u5426\u4f1a\u6709\u4e00\u4e2acookies\u961f\u5217\uff1f<\/p>\n
\u751f\u6210\u7684cookies\u4fdd\u5b58\u5728\u54ea\u91cc\u5462\uff1f\u662f\u5426\u4f1a\u6709\u4e00\u4e2a\u961f\u5217\u6765\u4fdd\u5b58\u8fd9\u4e9bcookies\uff1f<\/p>\n
\u6211\u4eec\u53ef\u4ee5\u53cd\u8fc7\u6765\u601d\u8003\uff0c\u5982\u679c\u6709\u4e00\u4e2acookies\u961f\u5217\uff0c\u90a3\u4e48\u5b83\u6700\u7ec8\u4e5f\u4f1a\u88abSYN Flood\u653b\u51fb\u586b\u6ee1\uff0c\u4e0e\u534a\u8fde\u63a5\u961f\u5217\u7684\u60c5\u51b5\u7c7b\u4f3c\u3002<\/p>\n
\u5b9e\u9645\u4e0a\uff0ccookies\u5e76\u6ca1\u6709\u4e00\u4e2a\u4e13\u95e8\u7684\u961f\u5217\u6765\u4fdd\u5b58\uff0c\u5b83\u662f\u901a\u8fc7\u901a\u4fe1\u53cc\u65b9\u7684IP\u5730\u5740\u3001\u7aef\u53e3\u3001\u65f6\u95f4\u6233\u3001MSS\u7b49\u4fe1\u606f\u8fdb\u884c\u5b9e\u65f6\u8ba1\u7b97\u7684\uff0c\u5e76\u4fdd\u5b58\u5728TCP\u62a5\u5934\u7684seq\u5b57\u6bb5\u4e2d\u3002<\/p>\n
\u5f53\u670d\u52a1\u7aef\u6536\u5230\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u7b2c\u4e09\u6b21\u63e1\u624b\u5305\u65f6\uff0c\u4f1a\u901a\u8fc7seq\u5b57\u6bb5\u8fd8\u539f\u51fa\u901a\u4fe1\u53cc\u65b9\u7684IP\u5730\u5740\u3001\u7aef\u53e3\u3001\u65f6\u95f4\u6233\u3001MSS\uff0c\u5e76\u8fdb\u884c\u9a8c\u8bc1\u3002\u9a8c\u8bc1\u901a\u8fc7\u540e\uff0c\u5efa\u7acb\u8fde\u63a5\u3002<\/p>\n
\u4e3a\u4ec0\u4e48\u4e0d\u76f4\u63a5\u7528cookies\u65b9\u6848\u53d6\u4ee3\u534a\u8fde\u63a5\u961f\u5217\uff1f<\/p>\n
\u76ee\u524d\u770b\u6765\uff0csyn cookies\u65b9\u6848\u8282\u7701\u4e86\u534a\u8fde\u63a5\u961f\u5217\u6240\u9700\u7684\u961f\u5217\u5185\u5b58\uff0c\u5e76\u4e14\u53ef\u4ee5\u89e3\u51b3SYN Flood\u653b\u51fb\u3002\u90a3\u4e48\uff0c\u4e3a\u4ec0\u4e48\u4e0d\u76f4\u63a5\u7528syn cookies\u65b9\u6848\u53d6\u4ee3\u534a\u8fde\u63a5\u961f\u5217\u5462\uff1f<\/p>\n
\u4e8b\u7269\u90fd\u6709\u4e24\u9762\u6027\uff0c\u5c3d\u7ba1syn cookies\u65b9\u6848\u53ef\u4ee5\u9632\u6b62SYN Flood\u653b\u51fb\uff0c\u4f46\u4e5f\u5b58\u5728\u4e00\u4e9b\u95ee\u9898\u3002\u7531\u4e8e\u670d\u52a1\u7aef\u4e0d\u4f1a\u4fdd\u5b58\u8fde\u63a5\u4fe1\u606f\uff0c\u6240\u4ee5\u5982\u679c\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u4e22\u5931\u4e86\u6570\u636e\u5305\uff0c\u4e5f\u4e0d\u4f1a\u91cd\u65b0\u53d1\u9001\u7b2c\u4e8c\u6b21\u63e1\u624b\u7684\u4fe1\u606f\u3002<\/p>\n
\u6b64\u5916\uff0c\u7f16\u7801\u548c\u89e3\u7801cookies\u90fd\u4f1a\u6d88\u8017\u8f83\u591a\u7684CPU\u8d44\u6e90\u3002\u5229\u7528\u8fd9\u4e00\u70b9\uff0c\u5982\u679c\u653b\u51fb\u8005\u6784\u9020\u5927\u91cf\u7684ACK\u5305\uff0c\u5e76\u5e26\u4e0a\u865a\u5047\u7684cookies\u4fe1\u606f\uff0c\u670d\u52a1\u7aef\u5728\u6536\u5230ACK\u5305\u540e\u4f1a\u5c1d\u8bd5\u89e3\u7801\uff08\u6d88\u8017CPU\uff09\uff0c\u6700\u540e\u624d\u53d1\u73b0\u4e0d\u662f\u6b63\u5e38\u7684\u6570\u636e\u5305\u5e76\u4e22\u5f03\u3002\u8fd9\u79cd\u5229\u7528ACK\u5305\u6d88\u8017\u670d\u52a1\u7aef\u8d44\u6e90\u7684\u653b\u51fb\u79f0\u4e3aACK\u653b\u51fb\uff0c\u53d7\u653b\u51fb\u7684\u670d\u52a1\u5668\u53ef\u80fd\u56e0\u4e3aCPU\u8d44\u6e90\u8017\u5c3d\u800c\u65e0\u6cd5\u54cd\u5e94\u6b63\u5e38\u8bf7\u6c42\u3002<\/p>\n
\u6ca1\u6709listen\u65b9\u6cd5\uff0c\u4e3a\u4ec0\u4e48\u4ecd\u7136\u80fd\u5efa\u7acb\u8fde\u63a5\uff1f<\/p>\n
\u65e2\u7136\u6ca1\u6709accept\u65b9\u6cd5\u53ef\u4ee5\u5efa\u7acb\u8fde\u63a5\uff0c\u90a3\u4e48\u6ca1\u6709listen\u65b9\u6cd5\u662f\u5426\u4e5f\u80fd\u5efa\u7acb\u8fde\u63a5\u5462\uff1f\u662f\u7684\uff0c\u4e4b\u524d\u7684\u4e00\u7bc7\u6587\u7ae0\u63d0\u5230\u8fc7\uff0c\u5ba2\u6237\u7aef\u53ef\u4ee5\u81ea\u5df1\u8fde\u63a5\u81ea\u5df1\uff08TCP\u81ea\u8fde\u63a5\uff09\uff0c\u4e5f\u53ef\u4ee5\u4e24\u4e2a\u5ba2\u6237\u7aef\u540c\u65f6\u5411\u5bf9\u65b9\u53d1\u8d77\u8fde\u63a5\u8bf7\u6c42\uff08TCP\u540c\u65f6\u6253\u5f00\uff09\uff0c\u8fd9\u4e24\u79cd\u60c5\u51b5\u90fd\u6ca1\u6709\u670d\u52a1\u7aef\u7684\u53c2\u4e0e\uff0c\u4e5f\u5c31\u662f\u6ca1\u6709listen\u65b9\u6cd5\uff0c\u4ecd\u7136\u80fd\u591f\u5efa\u7acb\u8fde\u63a5\u3002<\/p>\n
\u5f53\u65f6\u7684\u6587\u7ae0\u6700\u540e\u7559\u4e0b\u4e86\u4e00\u4e2a\u95ee\u9898\uff0c\u6ca1\u6709listen\u65b9\u6cd5\uff0c\u4e3a\u4ec0\u4e48\u4ecd\u7136\u80fd\u5efa\u7acb\u8fde\u63a5\uff1f<\/p>\n
\u6211\u4eec\u77e5\u9053\uff0c\u6267\u884clisten\u65b9\u6cd5\u65f6\uff0c\u4f1a\u521b\u5efa\u534a\u8fde\u63a5\u961f\u5217\u548c\u5168\u8fde\u63a5\u961f\u5217\uff0c\u63e1\u624b\u8fc7\u7a0b\u4e2d\u4f1a\u5728\u8fd9\u4e24\u4e2a\u961f\u5217\u4e2d\u6682\u5b58\u8fde\u63a5\u4fe1\u606f\u3002\u56e0\u6b64\uff0c\u5efa\u7acb\u8fde\u63a5\u7684\u524d\u63d0\u662f\u5fc5\u987b\u6709\u4e00\u4e2a\u5730\u65b9\u5b58\u50a8\u8fde\u63a5\u4fe1\u606f\uff0c\u4ee5\u4fbf\u5728\u63e1\u624b\u8fc7\u7a0b\u4e2d\u6839\u636eIP\u5730\u5740\u3001\u7aef\u53e3\u7b49\u4fe1\u606f\u627e\u5230socket\u4fe1\u606f\u3002<\/p>\n
\u90a3\u4e48\uff0c\u5ba2\u6237\u7aef\u662f\u5426\u6709\u534a\u8fde\u63a5\u961f\u5217\u5462\uff1f<\/p>\n
\u663e\u7136\u6ca1\u6709\uff0c\u56e0\u4e3a\u5ba2\u6237\u7aef\u6ca1\u6709\u6267\u884clisten\u65b9\u6cd5\uff0c\u534a\u8fde\u63a5\u961f\u5217\u548c\u5168\u8fde\u63a5\u961f\u5217\u662f\u5728\u6267\u884clisten\u65b9\u6cd5\u65f6\u5185\u6838\u81ea\u52a8\u521b\u5efa\u7684\u3002<\/p>\n
\u4f46\u662f\uff0c\u5185\u6838\u8fd8\u6709\u4e00\u4e2a\u5168\u5c40\u54c8\u5e0c\u8868\uff0c\u7528\u4e8e\u5b58\u50a8sock\u8fde\u63a5\u7684\u4fe1\u606f\u3002\u8fd9\u4e2a\u5168\u5c40\u54c8\u5e0c\u8868\u5b9e\u9645\u4e0a\u8fd8\u7ec6\u5206\u4e3aehash\u3001bhash\u548clisten_hash\u7b49\uff0c\u4f46\u662f\u6211\u4eec\u53ef\u4ee5\u5c06\u5176\u7406\u89e3\u4e3a\u6709\u4e00\u4e2a\u5168\u5c40\u54c8\u5e0c\u8868\u5c31\u8db3\u591f\u4e86\u3002<\/p>\n
\u5728TCP\u81ea\u8fde\u63a5\u7684\u60c5\u51b5\u4e0b\uff0c\u5ba2\u6237\u7aef\u5728\u6267\u884cconnect\u65b9\u6cd5\u65f6\uff0c\u6700\u540e\u4f1a\u5c06\u81ea\u5df1\u7684\u8fde\u63a5\u4fe1\u606f\u653e\u5165\u8fd9\u4e2a\u5168\u5c40\u54c8\u5e0c\u8868\u4e2d\uff0c\u7136\u540e\u5c06\u4fe1\u606f\u53d1\u9001\u51fa\u53bb\u3002\u5f53\u6d88\u606f\u7ecf\u8fc7\u56de\u73af\u5730\u5740\u91cd\u65b0\u56de\u5230TCP\u4f20\u8f93\u5c42\u65f6\uff0c\u6839\u636eIP\u5730\u5740\u3001\u7aef\u53e3\u7b49\u4fe1\u606f\u518d\u6b21\u4ece\u5168\u5c40\u54c8\u5e0c\u8868\u4e2d\u53d6\u51fa\u4fe1\u606f\u3002\u56e0\u6b64\uff0c\u901a\u8fc7\u4e00\u6765\u4e00\u56de\u7684\u63e1\u624b\u5305\uff0c\u6700\u7ec8\u6210\u529f\u5efa\u7acb\u8fde\u63a5\u3002<\/p>\n
TCP\u540c\u65f6\u6253\u5f00\u7684\u60c5\u51b5\u7c7b\u4f3c\uff0c\u53ea\u662f\u4ece\u4e00\u4e2a\u5ba2\u6237\u7aef\u53d8\u6210\u4e86\u4e24\u4e2a\u5ba2\u6237\u7aef\u800c\u5df2\u3002<\/p>\n
\u603b\u7ed3\uff1a\u4ee5\u4e0a\u662f\u5173\u4e8e\u63e1\u624b\u5efa\u7acb\u8fde\u63a5\u6d41\u7a0b\u7684\u91cd\u65b0\u6784\u5efa\u6587\u7ae0\u3002\u901a\u8fc7\u5bf9\u8fde\u63a5\u5efa\u7acb\u8fc7\u7a0b\u7684\u5206\u6790\uff0c\u6211\u4eec\u4e86\u89e3\u4e86\u534a\u8fde\u63a5\u961f\u5217\u548c\u5168\u8fde\u63a5\u961f\u5217\u7684\u4f5c\u7528\uff0c\u4ee5\u53ca\u5b83\u4eec\u7684\u5185\u90e8\u7ed3\u6784\u3002\u6211\u4eec\u8fd8\u8ba8\u8bba\u4e86\u534a\u8fde\u63a5\u961f\u5217\u4e3a\u4ec0\u4e48\u88ab\u8bbe\u8ba1\u4e3a\u54c8\u5e0c\u8868\uff0c\u4ee5\u53ca\u5982\u4f55\u67e5\u770b\u961f\u5217\u7684\u5927\u5c0f\u3002\u6b64\u5916\uff0c\u6211\u4eec\u8fd8\u63a2\u8ba8\u4e86\u5168\u8fde\u63a5\u961f\u5217\u548c\u534a\u8fde\u63a5\u961f\u5217\u6ea2\u51fa\u7684\u60c5\u51b5\uff0c\u4ee5\u53catcpabort<\/em>on_overflow\u53c2\u6570\u7684\u5f71\u54cd\u3002\u6700\u540e\uff0c\u6211\u4eec\u8ba8\u8bba\u4e86syn cookies\u65b9\u6848\u4ee5\u53caTCP\u81ea\u8fde\u63a5\u548cTCP\u540c\u65f6\u6253\u5f00\u7684\u60c5\u51b5\u3002\u5e0c\u671b\u8fd9\u7bc7\u91cd\u65b0\u6784\u5efa\u7684\u6587\u7ae0\u5bf9\u60a8\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4fdd\u5b58\u63e1\u624b\u5305\u4fdd\u5b58\u63e1\u624b\u5305 \u52a8\u56fe\u56fe\u89e3\uff01\u6ca1\u6709accept\uff0c\u80fd\u5efa\u7acbTCP\u8fde\u63a5\u5417\uff1f\u63e1\u624b\u5efa\u7acb\u8fde\u63a5\u6d41\u7a0b\u4e0a\u9762\u8fd9\u4e2a\u52a8\u56fe\uff0c\u662f\u6211\u4eec\u5e73\u65f6\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u7aef\u5efa\u7acb\u8fde\u63a5\u65f6\u7684\u4ee3\u7801\u6d41\u7a0b\u3002\u5bf9\u5e94\u7684\u662f\u4e0b\u9762\u4e00\u6bb5\u7b80\u5316\u8fc7\u7684\u670d\u52a1\u7aef\u4f2a\u4ee3\u7801\u3002\u4f30\u8ba1\u5927\u5bb6\u4e5f\u662f\u8001\u719f\u6089\u8fd9\u6bb5\u4f2a\u4ee3\u7801\u4e86\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f<\/p>\n","protected":false},"author":1,"featured_media":3344,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"topic":[],"class_list":["post-3343","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-1"],"_links":{"self":[{"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/posts\/3343","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/comments?post=3343"}],"version-history":[{"count":0,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/posts\/3343\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/media\/3344"}],"wp:attachment":[{"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/media?parent=3343"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/categories?post=3343"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/tags?post=3343"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/topic?post=3343"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}