{"id":185853,"date":"2021-12-21T07:30:23","date_gmt":"2021-12-20T23:30:23","guid":{"rendered":"http:\/\/www.idc.net\/help\/185853\/"},"modified":"2021-12-21T07:30:23","modified_gmt":"2021-12-20T23:30:23","slug":"%e5%90%8e%e6%b5%aa%e4%ba%91nginx%e6%95%99%e7%a8%8b%ef%bc%9anginx-%e5%9f%ba%e7%a1%80%e6%a6%82%e5%bf%b5","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/185853\/","title":{"rendered":"\u540e\u6d6a\u4e91nginx\u6559\u7a0b\uff1aNginx \u57fa\u7840\u6982\u5ff5"},"content":{"rendered":"

connection<\/span>
<\/h2>\n

\u5728 Nginx \u4e2d connection \u5c31\u662f\u5bf9 tcp \u8fde\u63a5\u7684\u5c01\u88c5\uff0c\u5176\u4e2d\u5305\u62ec\u8fde\u63a5\u7684 socket\uff0c\u8bfb\u4e8b\u4ef6\uff0c\u5199\u4e8b\u4ef6\u3002\u5229\u7528 Nginx \u5c01\u88c5\u7684 connection\uff0c\u6211\u4eec\u53ef\u4ee5\u5f88\u65b9\u4fbf\u7684\u4f7f\u7528 Nginx \u6765\u5904\u7406\u4e0e\u8fde\u63a5\u76f8\u5173\u7684\u4e8b\u60c5\uff0c\u6bd4\u5982\uff0c\u5efa\u7acb\u8fde\u63a5\uff0c\u53d1\u9001\u4e0e\u63a5\u53d7\u6570\u636e\u7b49\u3002\u800c Nginx \u4e2d\u7684 http \u8bf7\u6c42\u7684\u5904\u7406\u5c31\u662f\u5efa\u7acb\u5728 connection\u4e4b\u4e0a\u7684\uff0c\u6240\u4ee5 Nginx \u4e0d\u4ec5\u53ef\u4ee5\u4f5c\u4e3a\u4e00\u4e2aweb\u670d\u52a1\u5668\uff0c\u4e5f\u53ef\u4ee5\u4f5c\u4e3a\u90ae\u4ef6\u670d\u52a1\u5668\u3002\u5f53\u7136\uff0c\u5229\u7528 Nginx \u63d0\u4f9b\u7684 connection\uff0c\u6211\u4eec\u53ef\u4ee5\u4e0e\u4efb\u4f55\u540e\u7aef\u670d\u52a1\u6253\u4ea4\u9053\u3002<\/p>\n

\u7ed3\u5408\u4e00\u4e2a tcp \u8fde\u63a5\u7684\u751f\u547d\u5468\u671f\uff0c\u6211\u4eec\u770b\u770b Nginx \u662f\u5982\u4f55\u5904\u7406\u4e00\u4e2a\u8fde\u63a5\u7684\u3002\u9996\u5148\uff0cNginx \u5728\u542f\u52a8\u65f6\uff0c\u4f1a\u89e3\u6790\u914d\u7f6e\u6587\u4ef6\uff0c\u5f97\u5230\u9700\u8981\u76d1\u542c\u7684\u7aef\u53e3\u4e0e ip \u5730\u5740\uff0c\u7136\u540e\u5728 Nginx \u7684 master \u8fdb\u7a0b\u91cc\u9762\uff0c\u5148\u521d\u59cb\u5316\u597d\u8fd9\u4e2a\u76d1\u63a7\u7684 socket(\u521b\u5efa socket\uff0c\u8bbe\u7f6e addrreuse \u7b49\u9009\u9879\uff0c\u7ed1\u5b9a\u5230\u6307\u5b9a\u7684 ip \u5730\u5740\u7aef\u53e3\uff0c\u518d listen)\uff0c\u7136\u540e\u518d fork \u51fa\u591a\u4e2a\u5b50\u8fdb\u7a0b\u51fa\u6765\uff0c\u7136\u540e\u5b50\u8fdb\u7a0b\u4f1a\u7ade\u4e89 accept \u65b0\u7684\u8fde\u63a5\u3002\u6b64\u65f6\uff0c\u5ba2\u6237\u7aef\u5c31\u53ef\u4ee5\u5411 Nginx \u53d1\u8d77\u8fde\u63a5\u4e86\u3002\u5f53\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u7aef\u901a\u8fc7\u4e09\u6b21\u63e1\u624b\u5efa\u7acb\u597d\u4e00\u4e2a\u8fde\u63a5\u540e\uff0cNginx \u7684\u67d0\u4e00\u4e2a\u5b50\u8fdb\u7a0b\u4f1a accept \u6210\u529f\uff0c\u5f97\u5230\u8fd9\u4e2a\u5efa\u7acb\u597d\u7684\u8fde\u63a5\u7684 socket\uff0c\u7136\u540e\u521b\u5efa Nginx \u5bf9\u8fde\u63a5\u7684\u5c01\u88c5\uff0c\u5373 ngx_connection_t \u7ed3\u6784\u4f53\u3002\u63a5\u7740\uff0c\u8bbe\u7f6e\u8bfb\u5199\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u5e76\u6dfb\u52a0\u8bfb\u5199\u4e8b\u4ef6\u6765\u4e0e\u5ba2\u6237\u7aef\u8fdb\u884c\u6570\u636e\u7684\u4ea4\u6362\u3002\u6700\u540e\uff0cNginx \u6216\u5ba2\u6237\u7aef\u6765\u4e3b\u52a8\u5173\u6389\u8fde\u63a5\uff0c\u5230\u6b64\uff0c\u4e00\u4e2a\u8fde\u63a5\u5c31\u5bff\u7ec8\u6b63\u5bdd\u4e86\u3002<\/p>\n

\u5f53\u7136\uff0cNginx \u4e5f\u662f\u53ef\u4ee5\u4f5c\u4e3a\u5ba2\u6237\u7aef\u6765\u8bf7\u6c42\u5176\u5b83 server \u7684\u6570\u636e\u7684\uff08\u5982 upstream \u6a21\u5757\uff09\uff0c\u6b64\u65f6\uff0c\u4e0e\u5176\u5b83 server \u521b\u5efa\u7684\u8fde\u63a5\uff0c\u4e5f\u5c01\u88c5\u5728 ngx_connection_t \u4e2d\u3002\u4f5c\u4e3a\u5ba2\u6237\u7aef\uff0cNginx \u5148\u83b7\u53d6\u4e00\u4e2a ngx_connection_t \u7ed3\u6784\u4f53\uff0c\u7136\u540e\u521b\u5efa socket\uff0c\u5e76\u8bbe\u7f6e socket \u7684\u5c5e\u6027\uff08 \u6bd4\u5982\u975e\u963b\u585e\uff09\u3002\u7136\u540e\u518d\u901a\u8fc7\u6dfb\u52a0\u8bfb\u5199\u4e8b\u4ef6\uff0c\u8c03\u7528 connect\/read\/write \u6765\u8c03\u7528\u8fde\u63a5\uff0c\u6700\u540e\u5173\u6389\u8fde\u63a5\uff0c\u5e76\u91ca\u653e ngx_connection_t\u3002<\/p>\n

\u5728 Nginx \u4e2d\uff0c\u6bcf\u4e2a\u8fdb\u7a0b\u4f1a\u6709\u4e00\u4e2a\u8fde\u63a5\u6570\u7684\u6700\u5927\u4e0a\u9650\uff0c\u8fd9\u4e2a\u4e0a\u9650\u4e0e\u7cfb\u7edf\u5bf9 fd \u7684\u9650\u5236\u4e0d\u4e00\u6837\u3002\u5728\u64cd\u4f5c\u7cfb\u7edf\u4e2d\uff0c\u901a\u8fc7 ulimit -n<\/code>\uff0c\u6211\u4eec\u53ef\u4ee5\u5f97\u5230\u4e00\u4e2a\u8fdb\u7a0b\u6240\u80fd\u591f\u6253\u5f00\u7684 fd \u7684\u6700\u5927\u6570\uff0c\u5373 nofile\uff0c\u56e0\u4e3a\u6bcf\u4e2a socket \u8fde\u63a5\u4f1a\u5360\u7528\u6389\u4e00\u4e2a fd\uff0c\u6240\u4ee5\u8fd9\u4e5f\u4f1a\u9650\u5236\u6211\u4eec\u8fdb\u7a0b\u7684\u6700\u5927\u8fde\u63a5\u6570\uff0c\u5f53\u7136\u4e5f\u4f1a\u76f4\u63a5\u5f71\u54cd\u5230\u6211\u4eec\u7a0b\u5e8f\u6240\u80fd\u652f\u6301\u7684\u6700\u5927\u5e76\u53d1\u6570\uff0c\u5f53 fd \u7528\u5b8c\u540e\uff0c\u518d\u521b\u5efa socket \u65f6\uff0c\u5c31\u4f1a\u5931\u8d25\u3002Nginx \u901a\u8fc7\u8bbe\u7f6e worker_connectons \u6765\u8bbe\u7f6e\u6bcf\u4e2a\u8fdb\u7a0b\u652f\u6301\u7684\u6700\u5927\u8fde\u63a5\u6570\u3002\u5982\u679c\u8be5\u503c\u5927\u4e8e nofile\uff0c\u90a3\u4e48\u5b9e\u9645\u7684\u6700\u5927\u8fde\u63a5\u6570\u662f nofile\uff0cNginx \u4f1a\u6709\u8b66\u544a\u3002Nginx \u5728\u5b9e\u73b0\u65f6\uff0c\u662f\u901a\u8fc7\u4e00\u4e2a\u8fde\u63a5\u6c60\u6765\u7ba1\u7406\u7684\uff0c\u6bcf\u4e2a worker \u8fdb\u7a0b\u90fd\u6709\u4e00\u4e2a\u72ec\u7acb\u7684\u8fde\u63a5\u6c60\uff0c\u8fde\u63a5\u6c60\u7684\u5927\u5c0f\u662f worker_connections\u3002\u8fd9\u91cc\u7684\u8fde\u63a5\u6c60\u91cc\u9762\u4fdd\u5b58\u7684\u5176\u5b9e\u4e0d\u662f\u771f\u5b9e\u7684\u8fde\u63a5\uff0c\u5b83\u53ea\u662f\u4e00\u4e2a worker_connections \u5927\u5c0f\u7684\u4e00\u4e2a ngx_connection_t \u7ed3\u6784\u7684\u6570\u7ec4\u3002\u5e76\u4e14\uff0cNginx \u4f1a\u901a\u8fc7\u4e00\u4e2a\u94fe\u8868 free_connections \u6765\u4fdd\u5b58\u6240\u6709\u7684\u7a7a\u95f2 ngx_connection_t\uff0c\u6bcf\u6b21\u83b7\u53d6\u4e00\u4e2a\u8fde\u63a5\u65f6\uff0c\u5c31\u4ece\u7a7a\u95f2\u8fde\u63a5\u94fe\u8868\u4e2d\u83b7\u53d6\u4e00\u4e2a\uff0c\u7528\u5b8c\u540e\uff0c\u518d\u653e\u56de\u7a7a\u95f2\u8fde\u63a5\u94fe\u8868\u91cc\u9762\u3002<\/p>\n

\u5728\u8fd9\u91cc\uff0c\u5f88\u591a\u4eba\u4f1a\u8bef\u89e3 worker_connections \u8fd9\u4e2a\u53c2\u6570\u7684\u610f\u601d\uff0c\u8ba4\u4e3a\u8fd9\u4e2a\u503c\u5c31\u662f Nginx \u6240\u80fd\u5efa\u7acb\u8fde\u63a5\u7684\u6700\u5927\u503c\u3002\u5176\u5b9e\u4e0d\u7136\uff0c\u8fd9\u4e2a\u503c\u662f\u8868\u793a\u6bcf\u4e2a worker \u8fdb\u7a0b\u6240\u80fd\u5efa\u7acb\u8fde\u63a5\u7684\u6700\u5927\u503c\uff0c\u6240\u4ee5\uff0c\u4e00\u4e2a Nginx \u80fd\u5efa\u7acb\u7684\u6700\u5927\u8fde\u63a5\u6570\uff0c\u5e94\u8be5\u662fworker_connections * worker_processes<\/code>\u3002\u5f53\u7136\uff0c\u8fd9\u91cc\u8bf4\u7684\u662f\u6700\u5927\u8fde\u63a5\u6570\uff0c\u5bf9\u4e8e HTTP \u8bf7\u6c42\u672c\u5730\u8d44\u6e90\u6765\u8bf4\uff0c\u80fd\u591f\u652f\u6301\u7684\u6700\u5927\u5e76\u53d1\u6570\u91cf\u662fworker_connections * worker_processes<\/code>\uff0c\u800c\u5982\u679c\u662f HTTP \u4f5c\u4e3a\u53cd\u5411\u4ee3\u7406\u6765\u8bf4\uff0c\u6700\u5927\u5e76\u53d1\u6570\u91cf\u5e94\u8be5\u662fworker_connections * worker_processes\/2<\/code>\u3002\u56e0\u4e3a\u4f5c\u4e3a\u53cd\u5411\u4ee3\u7406\u670d\u52a1\u5668\uff0c\u6bcf\u4e2a\u5e76\u53d1\u4f1a\u5efa\u7acb\u4e0e\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u548c\u4e0e\u540e\u7aef\u670d\u52a1\u7684\u8fde\u63a5\uff0c\u4f1a\u5360\u7528\u4e24\u4e2a\u8fde\u63a5\u3002<\/p>\n

\u90a3\u4e48\uff0c\u6211\u4eec\u524d\u9762\u6709\u8bf4\u8fc7\u4e00\u4e2a\u5ba2\u6237\u7aef\u8fde\u63a5\u8fc7\u6765\u540e\uff0c\u591a\u4e2a\u7a7a\u95f2\u7684\u8fdb\u7a0b\uff0c\u4f1a\u7ade\u4e89\u8fd9\u4e2a\u8fde\u63a5\uff0c\u5f88\u5bb9\u6613\u770b\u5230\uff0c\u8fd9\u79cd\u7ade\u4e89\u4f1a\u5bfc\u81f4\u4e0d\u516c\u5e73\uff0c\u5982\u679c\u67d0\u4e2a\u8fdb\u7a0b\u5f97\u5230 accept \u7684\u673a\u4f1a\u6bd4\u8f83\u591a\uff0c\u5b83\u7684\u7a7a\u95f2\u8fde\u63a5\u5f88\u5feb\u5c31\u7528\u5b8c\u4e86\uff0c\u5982\u679c\u4e0d\u63d0\u524d\u505a\u4e00\u4e9b\u63a7\u5236\uff0c\u5f53 accept \u5230\u4e00\u4e2a\u65b0\u7684 tcp \u8fde\u63a5\u540e\uff0c\u56e0\u4e3a\u65e0\u6cd5\u5f97\u5230\u7a7a\u95f2\u8fde\u63a5\uff0c\u800c\u4e14\u65e0\u6cd5\u5c06\u6b64\u8fde\u63a5\u8f6c\u4ea4\u7ed9\u5176\u5b83\u8fdb\u7a0b\uff0c\u6700\u7ec8\u4f1a\u5bfc\u81f4\u6b64 tcp \u8fde\u63a5\u5f97\u4e0d\u5230\u5904\u7406\uff0c\u5c31\u4e2d\u6b62\u6389\u4e86\u3002\u5f88\u663e\u7136\uff0c\u8fd9\u662f\u4e0d\u516c\u5e73\u7684\uff0c\u6709\u7684\u8fdb\u7a0b\u6709\u7a7a\u4f59\u8fde\u63a5\uff0c\u5374\u6ca1\u6709\u5904\u7406\u673a\u4f1a\uff0c\u6709\u7684\u8fdb\u7a0b\u56e0\u4e3a\u6ca1\u6709\u7a7a\u4f59\u8fde\u63a5\uff0c\u5374\u4eba\u4e3a\u5730\u4e22\u5f03\u8fde\u63a5\u3002\u90a3\u4e48\uff0c\u5982\u4f55\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u5462\uff1f\u9996\u5148\uff0cNginx \u7684\u5904\u7406\u5f97\u5148\u6253\u5f00 accept_mutex \u9009\u9879\uff0c\u6b64\u65f6\uff0c\u53ea\u6709\u83b7\u5f97\u4e86 accept_mutex \u7684\u8fdb\u7a0b\u624d\u4f1a\u53bb\u6dfb\u52a0accept\u4e8b\u4ef6\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0cNginx\u4f1a\u63a7\u5236\u8fdb\u7a0b\u662f\u5426\u6dfb\u52a0 accept \u4e8b\u4ef6\u3002Nginx \u4f7f\u7528\u4e00\u4e2a\u53eb ngx_accept_disabled \u7684\u53d8\u91cf\u6765\u63a7\u5236\u662f\u5426\u53bb\u7ade\u4e89 accept_mutex \u9501\u3002\u5728\u7b2c\u4e00\u6bb5\u4ee3\u7801\u4e2d\uff0c\u8ba1\u7b97 ngx_accept_disabled \u7684\u503c\uff0c\u8fd9\u4e2a\u503c\u662f Nginx \u5355\u8fdb\u7a0b\u7684\u6240\u6709\u8fde\u63a5\u603b\u6570\u7684\u516b\u5206\u4e4b\u4e00\uff0c\u51cf\u53bb\u5269\u4e0b\u7684\u7a7a\u95f2\u8fde\u63a5\u6570\u91cf\uff0c\u5f97\u5230\u7684\u8fd9\u4e2a ngx_accept_disabled \u6709\u4e00\u4e2a\u89c4\u5f8b\uff0c\u5f53\u5269\u4f59\u8fde\u63a5\u6570\u5c0f\u4e8e\u603b\u8fde\u63a5\u6570\u7684\u516b\u5206\u4e4b\u4e00\u65f6\uff0c\u5176\u503c\u624d\u5927\u4e8e 0\uff0c\u800c\u4e14\u5269\u4f59\u7684\u8fde\u63a5\u6570\u8d8a\u5c0f\uff0c\u8fd9\u4e2a\u503c\u8d8a\u5927\u3002\u518d\u770b\u7b2c\u4e8c\u6bb5\u4ee3\u7801\uff0c\u5f53 ngx_accept_disabled \u5927\u4e8e 0 \u65f6\uff0c\u4e0d\u4f1a\u53bb\u5c1d\u8bd5\u83b7\u53d6 accept_mutex \u9501\uff0c\u5e76\u4e14\u5c06 ngx_accept_disabled \u51cf 1\uff0c\u4e8e\u662f\uff0c\u6bcf\u6b21\u6267\u884c\u5230\u6b64\u5904\u65f6\uff0c\u90fd\u4f1a\u53bb\u51cf 1\uff0c\u76f4\u5230\u5c0f\u4e8e 0\u3002\u4e0d\u53bb\u83b7\u53d6 accept_mutex \u9501\uff0c\u5c31\u662f\u7b49\u4e8e\u8ba9\u51fa\u83b7\u53d6\u8fde\u63a5\u7684\u673a\u4f1a\uff0c\u5f88\u663e\u7136\u53ef\u4ee5\u770b\u51fa\uff0c\u5f53\u7a7a\u4f59\u8fde\u63a5\u8d8a\u5c11\u65f6\uff0cngx_accept_disable \u8d8a\u5927\uff0c\u4e8e\u662f\u8ba9\u51fa\u7684\u673a\u4f1a\u5c31\u8d8a\u591a\uff0c\u8fd9\u6837\u5176\u5b83\u8fdb\u7a0b\u83b7\u53d6\u9501\u7684\u673a\u4f1a\u4e5f\u5c31\u8d8a\u5927\u3002\u4e0d\u53bb accept\uff0c\u81ea\u5df1\u7684\u8fde\u63a5\u5c31\u63a7\u5236\u4e0b\u6765\u4e86\uff0c\u5176\u5b83\u8fdb\u7a0b\u7684\u8fde\u63a5\u6c60\u5c31\u4f1a\u5f97\u5230\u5229\u7528\uff0c\u8fd9\u6837\uff0cNginx \u5c31\u63a7\u5236\u4e86\u591a\u8fdb\u7a0b\u95f4\u8fde\u63a5\u7684\u5e73\u8861\u4e86\u3002<\/p>\n

    ngx_accept_disabled = ngx_cycle->connection_n \/ 8\n        - ngx_cycle->free_connection_n;\n\n    if (ngx_accept_disabled > 0) {\n        ngx_accept_disabled--;\n\n    } else {\n        if (ngx_trylock_accept_mutex(cycle) == NGX_ERROR) {\n            return;\n        }\n\n        if (ngx_accept_mutex_held) {\n            flags |= NGX_POST_EVENTS;\n\n        } else {\n            if (timer == NGX_TIMER_INFINITE\n                    || timer > ngx_accept_mutex_delay)\n            {\n                timer = ngx_accept_mutex_delay;\n            }\n        }\n    }<\/code><\/pre>\n
\u597d\u4e86\uff0c\u8fde\u63a5\u5c31\u5148\u4ecb\u7ecd\u5230\u8fd9\uff0c\u672c\u7ae0\u7684\u76ee\u7684\u662f\u4ecb\u7ecd\u57fa\u672c\u6982\u5ff5\uff0c\u77e5\u9053\u5728 Nginx \u4e2d\u8fde\u63a5\u662f\u4e2a\u4ec0\u4e48\u4e1c\u897f\u5c31\u884c\u4e86\uff0c\u800c\u4e14\u8fde\u63a5\u662f\u5c5e\u4e8e\u6bd4\u8f83\u9ad8\u7ea7\u7684\u7528\u6cd5\uff0c\u5728\u540e\u9762\u7684\u6a21\u5757\u5f00\u53d1\u9ad8\u7ea7\u7bc7\u4f1a\u6709\u4e13\u95e8\u7684\u7ae0\u8282\u6765\u8bb2\u89e3\u8fde\u63a5\u4e0e\u4e8b\u4ef6\u7684\u5b9e\u73b0\u53ca\u4f7f\u7528\u3002<\/p>\n
request<\/h2>\n
\u8fd9\u8282\u6211\u4eec\u8bb2 request\uff0c\u5728 Nginx \u4e2d\u6211\u4eec\u6307\u7684\u662f http \u8bf7\u6c42\uff0c\u5177\u4f53\u5230 Nginx \u4e2d\u7684\u6570\u636e\u7ed3\u6784\u662fngx_http_request_t\u3002ngx_http_request_t \u662f\u5bf9\u4e00\u4e2a http \u8bf7\u6c42\u7684\u5c01\u88c5\u3002 \u6211\u4eec\u77e5\u9053\uff0c\u4e00\u4e2a http \u8bf7\u6c42\uff0c\u5305\u542b\u8bf7\u6c42\u884c\u3001\u8bf7\u6c42\u5934\u3001\u8bf7\u6c42\u4f53\u3001\u54cd\u5e94\u884c\u3001\u54cd\u5e94\u5934\u3001\u54cd\u5e94\u4f53\u3002<\/p>\n
http \u8bf7\u6c42\u662f\u5178\u578b\u7684\u8bf7\u6c42-\u54cd\u5e94\u7c7b\u578b\u7684\u7684\u7f51\u7edc\u534f\u8bae\uff0c\u800c http \u662f\u6587\u672c\u534f\u8bae\uff0c\u6240\u4ee5\u6211\u4eec\u5728\u5206\u6790\u8bf7\u6c42\u884c\u4e0e\u8bf7\u6c42\u5934\uff0c\u4ee5\u53ca\u8f93\u51fa\u54cd\u5e94\u884c\u4e0e\u54cd\u5e94\u5934\uff0c\u5f80\u5f80\u662f\u4e00\u884c\u4e00\u884c\u7684\u8fdb\u884c\u5904\u7406\u3002\u5982\u679c\u6211\u4eec\u81ea\u5df1\u6765\u5199\u4e00\u4e2a http \u670d\u52a1\u5668\uff0c\u901a\u5e38\u5728\u4e00\u4e2a\u8fde\u63a5\u5efa\u7acb\u597d\u540e\uff0c\u5ba2\u6237\u7aef\u4f1a\u53d1\u9001\u8bf7\u6c42\u8fc7\u6765\u3002\u7136\u540e\u6211\u4eec\u8bfb\u53d6\u4e00\u884c\u6570\u636e\uff0c\u5206\u6790\u51fa\u8bf7\u6c42\u884c\u4e2d\u5305\u542b\u7684 method\u3001uri\u3001http_version \u4fe1\u606f\u3002\u7136\u540e\u518d\u4e00\u884c\u4e00\u884c\u5904\u7406\u8bf7\u6c42\u5934\uff0c\u5e76\u6839\u636e\u8bf7\u6c42 method \u4e0e\u8bf7\u6c42\u5934\u7684\u4fe1\u606f\u6765\u51b3\u5b9a\u662f\u5426\u6709\u8bf7\u6c42\u4f53\u4ee5\u53ca\u8bf7\u6c42\u4f53\u7684\u957f\u5ea6\uff0c\u7136\u540e\u518d\u53bb\u8bfb\u53d6\u8bf7\u6c42\u4f53\u3002\u5f97\u5230\u8bf7\u6c42\u540e\uff0c\u6211\u4eec\u5904\u7406\u8bf7\u6c42\u4ea7\u751f\u9700\u8981\u8f93\u51fa\u7684\u6570\u636e\uff0c\u7136\u540e\u518d\u751f\u6210\u54cd\u5e94\u884c\uff0c\u54cd\u5e94\u5934\u4ee5\u53ca\u54cd\u5e94\u4f53\u3002\u5728\u5c06\u54cd\u5e94\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\u4e4b\u540e\uff0c\u4e00\u4e2a\u5b8c\u6574\u7684\u8bf7\u6c42\u5c31\u5904\u7406\u5b8c\u4e86\u3002\u5f53\u7136\u8fd9\u662f\u6700\u7b80\u5355\u7684 webserver \u7684\u5904\u7406\u65b9\u5f0f\uff0c\u5176\u5b9e Nginx \u4e5f\u662f\u8fd9\u6837\u505a\u7684\uff0c\u53ea\u662f\u6709\u4e00\u4e9b\u5c0f\u5c0f\u7684\u533a\u522b\uff0c\u6bd4\u5982\uff0c\u5f53\u8bf7\u6c42\u5934\u8bfb\u53d6\u5b8c\u6210\u540e\uff0c\u5c31\u5f00\u59cb\u8fdb\u884c\u8bf7\u6c42\u7684\u5904\u7406\u4e86\u3002Nginx \u901a\u8fc7 ngx_http_request_t \u6765\u4fdd\u5b58\u89e3\u6790\u8bf7\u6c42\u4e0e\u8f93\u51fa\u54cd\u5e94\u76f8\u5173\u7684\u6570\u636e\u3002<\/p>\n
\u90a3\u63a5\u4e0b\u6765\uff0c\u7b80\u8981\u8bb2\u8bb2 Nginx \u662f\u5982\u4f55\u5904\u7406\u4e00\u4e2a\u5b8c\u6574\u7684\u8bf7\u6c42\u7684\u3002\u5bf9\u4e8e Nginx \u6765\u8bf4\uff0c\u4e00\u4e2a\u8bf7\u6c42\u662f\u4ecengx_http_init_request \u5f00\u59cb\u7684\uff0c\u5728\u8fd9\u4e2a\u51fd\u6570\u4e2d\uff0c\u4f1a\u8bbe\u7f6e\u8bfb\u4e8b\u4ef6\u4e3a ngx_http_process_request_line\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u63a5\u4e0b\u6765\u7684\u7f51\u7edc\u4e8b\u4ef6\uff0c\u4f1a\u7531 ngx_http_process_request_line \u6765\u6267\u884c\u3002\u4ecengx_http_process_request_line \u7684\u51fd\u6570\u540d\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u8fd9\u5c31\u662f\u6765\u5904\u7406\u8bf7\u6c42\u884c\u7684\uff0c\u6b63\u597d\u4e0e\u4e4b\u524d\u8bb2\u7684\uff0c\u5904\u7406\u8bf7\u6c42\u7684\u7b2c\u4e00\u4ef6\u4e8b\u5c31\u662f\u5904\u7406\u8bf7\u6c42\u884c\u662f\u4e00\u81f4\u7684\u3002\u901a\u8fc7 ngx_http_read_request_header \u6765\u8bfb\u53d6\u8bf7\u6c42\u6570\u636e\u3002\u7136\u540e\u8c03\u7528 ngx_http_parse_request_line \u51fd\u6570\u6765\u89e3\u6790\u8bf7\u6c42\u884c\u3002Nginx \u4e3a\u63d0\u9ad8\u6548\u7387\uff0c\u91c7\u7528\u72b6\u6001\u673a\u6765\u89e3\u6790\u8bf7\u6c42\u884c\uff0c\u800c\u4e14\u5728\u8fdb\u884c method \u7684\u6bd4\u8f83\u65f6\uff0c\u6ca1\u6709\u76f4\u63a5\u4f7f\u7528\u5b57\u7b26\u4e32\u6bd4\u8f83\uff0c\u800c\u662f\u5c06\u56db\u4e2a\u5b57\u7b26\u8f6c\u6362\u6210\u4e00\u4e2a\u6574\u578b\uff0c\u7136\u540e\u4e00\u6b21\u6bd4\u8f83\u4ee5\u51cf\u5c11 cpu \u7684\u6307\u4ee4\u6570\uff0c\u8fd9\u4e2a\u524d\u9762\u6709\u8bf4\u8fc7\u3002\u5f88\u591a\u4eba\u53ef\u80fd\u5f88\u6e05\u695a\u4e00\u4e2a\u8bf7\u6c42\u884c\u5305\u542b\u8bf7\u6c42\u7684\u65b9\u6cd5\uff0curi\uff0c\u7248\u672c\uff0c\u5374\u4e0d\u77e5\u9053\u5176\u5b9e\u5728\u8bf7\u6c42\u884c\u4e2d\uff0c\u4e5f\u662f\u53ef\u4ee5\u5305\u542b\u6709 host \u7684\u3002\u6bd4\u5982\u4e00\u4e2a\u8bf7\u6c42 GET http:\/\/www.taobao.com\/uri HTTP\/1.0 \u8fd9\u6837\u4e00\u4e2a\u8bf7\u6c42\u884c\u4e5f\u662f\u5408\u6cd5\u7684\uff0c\u800c\u4e14 host \u662f www.taobao.com\uff0c\u8fd9\u4e2a\u65f6\u5019\uff0cNginx \u4f1a\u5ffd\u7565\u8bf7\u6c42\u5934\u4e2d\u7684 host \u57df\uff0c\u800c\u4ee5\u8bf7\u6c42\u884c\u4e2d\u7684\u8fd9\u4e2a\u4e3a\u51c6\u6765\u67e5\u627e\u865a\u62df\u4e3b\u673a\u3002\u53e6\u5916\uff0c\u5bf9\u4e8e\u5bf9\u4e8e http0.9 \u7248\u6765\u8bf4\uff0c\u662f\u4e0d\u652f\u6301\u8bf7\u6c42\u5934\u7684\uff0c\u6240\u4ee5\u8fd9\u91cc\u4e5f\u662f\u8981\u7279\u522b\u7684\u5904\u7406\u3002\u6240\u4ee5\uff0c\u5728\u540e\u9762\u89e3\u6790\u8bf7\u6c42\u5934\u65f6\uff0c\u534f\u8bae\u7248\u672c\u90fd\u662f 1.0 \u6216 1.1\u3002\u6574\u4e2a\u8bf7\u6c42\u884c\u89e3\u6790\u5230\u7684\u53c2\u6570\uff0c\u4f1a\u4fdd\u5b58\u5230 ngx_http_request_t \u7ed3\u6784\u5f53\u4e2d\u3002<\/p>\n
\u5728\u89e3\u6790\u5b8c\u8bf7\u6c42\u884c\u540e\uff0cNginx \u4f1a\u8bbe\u7f6e\u8bfb\u4e8b\u4ef6\u7684 handler \u4e3a ngx_http_process_request_headers\uff0c\u7136\u540e\u540e\u7eed\u7684\u8bf7\u6c42\u5c31\u5728 ngx_http_process_request_headers \u4e2d\u8fdb\u884c\u8bfb\u53d6\u4e0e\u89e3\u6790\u3002ngx_http_process_request_headers \u51fd\u6570\u7528\u6765\u8bfb\u53d6\u8bf7\u6c42\u5934\uff0c\u8ddf\u8bf7\u6c42\u884c\u4e00\u6837\uff0c\u8fd8\u662f\u8c03\u7528 ngx_http_read_request_header \u6765\u8bfb\u53d6\u8bf7\u6c42\u5934\uff0c\u8c03\u7528 ngx_http_parse_header_line \u6765\u89e3\u6790\u4e00\u884c\u8bf7\u6c42\u5934\uff0c\u89e3\u6790\u5230\u7684\u8bf7\u6c42\u5934\u4f1a\u4fdd\u5b58\u5230 ngx_http_request_t \u7684\u57df headers_in \u4e2d\uff0cheaders_in \u662f\u4e00\u4e2a\u94fe\u8868\u7ed3\u6784\uff0c\u4fdd\u5b58\u6240\u6709\u7684\u8bf7\u6c42\u5934\u3002\u800c HTTP \u4e2d\u6709\u4e9b\u8bf7\u6c42\u662f\u9700\u8981\u7279\u522b\u5904\u7406\u7684\uff0c\u8fd9\u4e9b\u8bf7\u6c42\u5934\u4e0e\u8bf7\u6c42\u5904\u7406\u51fd\u6570\u5b58\u653e\u5728\u4e00\u4e2a\u6620\u5c04\u8868\u91cc\u9762\uff0c\u5373 ngx_http_headers_in\uff0c\u5728\u521d\u59cb\u5316\u65f6\uff0c\u4f1a\u751f\u6210\u4e00\u4e2a hash \u8868\uff0c\u5f53\u6bcf\u89e3\u6790\u5230\u4e00\u4e2a\u8bf7\u6c42\u5934\u540e\uff0c\u5c31\u4f1a\u5148\u5728\u8fd9\u4e2a hash \u8868\u4e2d\u67e5\u627e\uff0c\u5982\u679c\u6709\u627e\u5230\uff0c\u5219\u8c03\u7528\u76f8\u5e94\u7684\u5904\u7406\u51fd\u6570\u6765\u5904\u7406\u8fd9\u4e2a\u8bf7\u6c42\u5934\u3002\u6bd4\u5982:Host \u5934\u7684\u5904\u7406\u51fd\u6570\u662f ngx_http_process_host\u3002<\/p>\n
\u5f53 Nginx \u89e3\u6790\u5230\u4e24\u4e2a\u56de\u8f66\u6362\u884c\u7b26\u65f6\uff0c\u5c31\u8868\u793a\u8bf7\u6c42\u5934\u7684\u7ed3\u675f\uff0c\u6b64\u65f6\u5c31\u4f1a\u8c03\u7528 ngx_http_process_request \u6765\u5904\u7406\u8bf7\u6c42\u4e86\u3002ngx_http_process_request \u4f1a\u8bbe\u7f6e\u5f53\u524d\u7684\u8fde\u63a5\u7684\u8bfb\u5199\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u4e3a ngx_http_request_handler\uff0c\u7136\u540e\u518d\u8c03\u7528 ngx_http_handler \u6765\u771f\u6b63\u5f00\u59cb\u5904\u7406\u4e00\u4e2a\u5b8c\u6574\u7684http\u8bf7\u6c42\u3002\u8fd9\u91cc\u53ef\u80fd\u6bd4\u8f83\u5947\u602a\uff0c\u8bfb\u5199\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u90fd\u662fngx_http_request_handler\uff0c\u5176\u5b9e\u5728\u8fd9\u4e2a\u51fd\u6570\u4e2d\uff0c\u4f1a\u6839\u636e\u5f53\u524d\u4e8b\u4ef6\u662f\u8bfb\u4e8b\u4ef6\u8fd8\u662f\u5199\u4e8b\u4ef6\uff0c\u5206\u522b\u8c03\u7528 ngx_http_request_t \u4e2d\u7684 read_event_handler \u6216\u8005\u662f write_event_handler\u3002\u7531\u4e8e\u6b64\u65f6\uff0c\u6211\u4eec\u7684\u8bf7\u6c42\u5934\u5df2\u7ecf\u8bfb\u53d6\u5b8c\u6210\u4e86\uff0c\u4e4b\u524d\u6709\u8bf4\u8fc7\uff0cNginx \u7684\u505a\u6cd5\u662f\u5148\u4e0d\u8bfb\u53d6\u8bf7\u6c42 body\uff0c\u6240\u4ee5\u8fd9\u91cc\u9762\u6211\u4eec\u8bbe\u7f6e read_event_handler \u4e3a ngx_http_block_reading\uff0c\u5373\u4e0d\u8bfb\u53d6\u6570\u636e\u4e86\u3002\u521a\u624d\u8bf4\u5230\uff0c\u771f\u6b63\u5f00\u59cb\u5904\u7406\u6570\u636e\uff0c\u662f\u5728 ngx_http_handler \u8fd9\u4e2a\u51fd\u6570\u91cc\u9762\uff0c\u8fd9\u4e2a\u51fd\u6570\u4f1a\u8bbe\u7f6e write_event_handler \u4e3a ngx_http_core_run_phases\uff0c\u5e76\u6267\u884c ngx_http_core_run_phases \u51fd\u6570\u3002ngx_http_core_run_phases \u8fd9\u4e2a\u51fd\u6570\u5c06\u6267\u884c\u591a\u9636\u6bb5\u8bf7\u6c42\u5904\u7406\uff0cNginx \u5c06\u4e00\u4e2a http \u8bf7\u6c42\u7684\u5904\u7406\u5206\u4e3a\u591a\u4e2a\u9636\u6bb5\uff0c\u90a3\u4e48\u8fd9\u4e2a\u51fd\u6570\u5c31\u662f\u6267\u884c\u8fd9\u4e9b\u9636\u6bb5\u6765\u4ea7\u751f\u6570\u636e\u3002\u56e0\u4e3a ngx_http_core_run_phases \u6700\u540e\u4f1a\u4ea7\u751f\u6570\u636e\uff0c\u6240\u4ee5\u6211\u4eec\u5c31\u5f88\u5bb9\u6613\u7406\u89e3\uff0c\u4e3a\u4ec0\u4e48\u8bbe\u7f6e\u5199\u4e8b\u4ef6\u7684\u5904\u7406\u51fd\u6570\u4e3a ngx_http_core_run_phases \u4e86\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u7b80\u8981\u8bf4\u660e\u4e86\u4e00\u4e0b\u51fd\u6570\u7684\u8c03\u7528\u903b\u8f91\uff0c\u6211\u4eec\u9700\u8981\u660e\u767d\u6700\u7ec8\u662f\u8c03\u7528 ngx_http_core_run_phases \u6765\u5904\u7406\u8bf7\u6c42\uff0c\u4ea7\u751f\u7684\u54cd\u5e94\u5934\u4f1a\u653e\u5728 ngx_http_request_t \u7684 headers_out \u4e2d\uff0c\u8fd9\u4e00\u90e8\u5206\u5185\u5bb9\uff0c\u6211\u4f1a\u653e\u5728\u8bf7\u6c42\u5904\u7406\u6d41\u7a0b\u91cc\u9762\u53bb\u8bb2\u3002Nginx \u7684\u5404\u79cd\u9636\u6bb5\u4f1a\u5bf9\u8bf7\u6c42\u8fdb\u884c\u5904\u7406\uff0c\u6700\u540e\u4f1a\u8c03\u7528 filter \u6765\u8fc7\u6ee4\u6570\u636e\uff0c\u5bf9\u6570\u636e\u8fdb\u884c\u52a0\u5de5\uff0c\u5982 truncked \u4f20\u8f93\u3001gzip \u538b\u7f29\u7b49\u3002\u8fd9\u91cc\u7684 filter \u5305\u62ec header filter \u4e0e body filter\uff0c\u5373\u5bf9\u54cd\u5e94\u5934\u6216\u54cd\u5e94\u4f53\u8fdb\u884c\u5904\u7406\u3002filter \u662f\u4e00\u4e2a\u94fe\u8868\u7ed3\u6784\uff0c\u5206\u522b\u6709 header filter \u4e0e body filter\uff0c\u5148\u6267\u884c header filter \u4e2d\u7684\u6240\u6709 filter\uff0c\u7136\u540e\u518d\u6267\u884c body filter \u4e2d\u7684\u6240\u6709 filter\u3002\u5728 header filter \u4e2d\u7684\u6700\u540e\u4e00\u4e2a filter\uff0c\u5373 ngx_http_header_filter\uff0c\u8fd9\u4e2a filter \u5c06\u4f1a\u904d\u5386\u6240\u6709\u7684\u54cd\u5e94\u5934\uff0c\u6700\u540e\u9700\u8981\u8f93\u51fa\u7684\u54cd\u5e94\u5934\u5728\u4e00\u4e2a\u8fde\u7eed\u7684\u5185\u5b58\uff0c\u7136\u540e\u8c03\u7528 ngx_http_write_filter \u8fdb\u884c\u8f93\u51fa\u3002ngx_http_write_filter \u662f body filter \u4e2d\u7684\u6700\u540e\u4e00\u4e2a\uff0c\u6240\u4ee5 Nginx \u9996\u5148\u7684 body \u4fe1\u606f\uff0c\u5728\u7ecf\u8fc7\u4e00\u7cfb\u5217\u7684 body filter \u4e4b\u540e\uff0c\u6700\u540e\u4e5f\u4f1a\u8c03\u7528 ngx_http_write_filter \u6765\u8fdb\u884c\u8f93\u51fa(\u6709\u56fe\u6765\u8bf4\u660e)\u3002 <\/p>\n
\u8fd9\u91cc\u8981\u6ce8\u610f\u7684\u662f\uff0cNginx \u4f1a\u5c06\u6574\u4e2a\u8bf7\u6c42\u5934\u90fd\u653e\u5728\u4e00\u4e2a buffer \u91cc\u9762\uff0c\u8fd9\u4e2a buffer \u7684\u5927\u5c0f\u901a\u8fc7\u914d\u7f6e\u9879 client_header_buffer_size \u6765\u8bbe\u7f6e\uff0c\u5982\u679c\u7528\u6237\u7684\u8bf7\u6c42\u5934\u592a\u5927\uff0c\u8fd9\u4e2a buffer \u88c5\u4e0d\u4e0b\uff0c\u90a3 Nginx \u5c31\u4f1a\u91cd\u65b0\u5206\u914d\u4e00\u4e2a\u65b0\u7684\u66f4\u5927\u7684 buffer \u6765\u88c5\u8bf7\u6c42\u5934\uff0c\u8fd9\u4e2a\u5927 buffer \u53ef\u4ee5\u901a\u8fc7 large_client_header_buffers \u6765\u8bbe\u7f6e\uff0c\u8fd9\u4e2a large_buffer \u8fd9\u4e00\u7ec4 buffer\uff0c\u6bd4\u5982\u914d\u7f6e 48k\uff0c\u5c31\u662f\u8868\u793a\u6709\u56db\u4e2a 8k \u5927\u5c0f\u7684 buffer \u53ef\u4ee5\u7528\u3002\u6ce8\u610f\uff0c\u4e3a\u4e86\u4fdd\u5b58\u8bf7\u6c42\u884c\u6216\u8bf7\u6c42\u5934\u7684\u5b8c\u6574\u6027\uff0c\u4e00\u4e2a\u5b8c\u6574\u7684\u8bf7\u6c42\u884c\u6216\u8bf7\u6c42\u5934\uff0c\u9700\u8981\u653e\u5728\u4e00\u4e2a\u8fde\u7eed\u7684\u5185\u5b58\u91cc\u9762\uff0c\u6240\u4ee5\uff0c\u4e00\u4e2a\u5b8c\u6574\u7684\u8bf7\u6c42\u884c\u6216\u8bf7\u6c42\u5934\uff0c\u53ea\u4f1a\u4fdd\u5b58\u5728\u4e00\u4e2a buffer \u91cc\u9762\u3002\u8fd9\u6837\uff0c\u5982\u679c\u8bf7\u6c42\u884c\u5927\u4e8e\u4e00\u4e2a buffer \u7684\u5927\u5c0f\uff0c\u5c31\u4f1a\u8fd4\u56de 414 \u9519\u8bef\uff0c\u5982\u679c\u4e00\u4e2a\u8bf7\u6c42\u5934\u5927\u5c0f\u5927\u4e8e\u4e00\u4e2a buffer \u5927\u5c0f\uff0c\u5c31\u4f1a\u8fd4\u56de 400 \u9519\u8bef\u3002\u5728\u4e86\u89e3\u4e86\u8fd9\u4e9b\u53c2\u6570\u7684\u503c\uff0c\u4ee5\u53ca Nginx \u5b9e\u9645\u7684\u505a\u6cd5\u4e4b\u540e\uff0c\u5728\u5e94\u7528\u573a\u666f\uff0c\u6211\u4eec\u5c31\u9700\u8981\u6839\u636e\u5b9e\u9645\u7684\u9700\u6c42\u6765\u8c03\u6574\u8fd9\u4e9b\u53c2\u6570\uff0c\u6765\u4f18\u5316\u6211\u4eec\u7684\u7a0b\u5e8f\u4e86\u3002<\/p>\n
\u5904\u7406\u6d41\u7a0b\u56fe\uff1a<\/p>\n
<\/p>\n
\u4ee5\u4e0a\u8fd9\u4e9b\uff0c\u5c31\u662f Nginx \u4e2d\u4e00\u4e2a http \u8bf7\u6c42\u7684\u751f\u547d\u5468\u671f\u4e86\u3002\u6211\u4eec\u518d\u770b\u770b\u4e0e\u8bf7\u6c42\u76f8\u5173\u7684\u4e00\u4e9b\u6982\u5ff5\u5427\u3002<\/p>\n
keepalive<\/h2>\n
\u5f53\u7136\uff0c\u5728 Nginx \u4e2d\uff0c\u5bf9\u4e8e http1.0 \u4e0e http1.1 \u4e5f\u662f\u652f\u6301\u957f\u8fde\u63a5\u7684\u3002\u4ec0\u4e48\u662f\u957f\u8fde\u63a5\u5462\uff1f\u6211\u4eec\u77e5\u9053\uff0chttp \u8bf7\u6c42\u662f\u57fa\u4e8e TCP \u534f\u8bae\u4e4b\u4e0a\u7684\uff0c\u90a3\u4e48\uff0c\u5f53\u5ba2\u6237\u7aef\u5728\u53d1\u8d77\u8bf7\u6c42\u524d\uff0c\u9700\u8981\u5148\u4e0e\u670d\u52a1\u7aef\u5efa\u7acb TCP \u8fde\u63a5\uff0c\u800c\u6bcf\u4e00\u6b21\u7684 TCP \u8fde\u63a5\u662f\u9700\u8981\u4e09\u6b21\u63e1\u624b\u6765\u786e\u5b9a\u7684\uff0c\u5982\u679c\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u7aef\u4e4b\u95f4\u7f51\u7edc\u5dee\u4e00\u70b9\uff0c\u8fd9\u4e09\u6b21\u4ea4\u4e92\u6d88\u8d39\u7684\u65f6\u95f4\u4f1a\u6bd4\u8f83\u591a\uff0c\u800c\u4e14\u4e09\u6b21\u4ea4\u4e92\u4e5f\u4f1a\u5e26\u6765\u7f51\u7edc\u6d41\u91cf\u3002\u5f53\u7136\uff0c\u5f53\u8fde\u63a5\u65ad\u5f00\u540e\uff0c\u4e5f\u4f1a\u6709\u56db\u6b21\u7684\u4ea4\u4e92\uff0c\u5f53\u7136\u5bf9\u7528\u6237\u4f53\u9a8c\u6765\u8bf4\u5c31\u4e0d\u91cd\u8981\u4e86\u3002\u800c http \u8bf7\u6c42\u662f\u8bf7\u6c42\u5e94\u7b54\u5f0f\u7684\uff0c\u5982\u679c\u6211\u4eec\u80fd\u77e5\u9053\u6bcf\u4e2a\u8bf7\u6c42\u5934\u4e0e\u54cd\u5e94\u4f53\u7684\u957f\u5ea6\uff0c\u90a3\u4e48\u6211\u4eec\u662f\u53ef\u4ee5\u5728\u4e00\u4e2a\u8fde\u63a5\u4e0a\u9762\u6267\u884c\u591a\u4e2a\u8bf7\u6c42\u7684\uff0c\u8fd9\u5c31\u662f\u6240\u8c13\u7684\u957f\u8fde\u63a5\uff0c\u4f46\u524d\u63d0\u6761\u4ef6\u662f\u6211\u4eec\u5148\u5f97\u786e\u5b9a\u8bf7\u6c42\u5934\u4e0e\u54cd\u5e94\u4f53\u7684\u957f\u5ea6\u3002\u5bf9\u4e8e\u8bf7\u6c42\u6765\u8bf4\uff0c\u5982\u679c\u5f53\u524d\u8bf7\u6c42\u9700\u8981\u6709body\uff0c\u5982 POST \u8bf7\u6c42\uff0c\u90a3\u4e48 Nginx \u5c31\u9700\u8981\u5ba2\u6237\u7aef\u5728\u8bf7\u6c42\u5934\u4e2d\u6307\u5b9a content-length \u6765\u8868\u660e body \u7684\u5927\u5c0f\uff0c\u5426\u5219\u8fd4\u56de 400 \u9519\u8bef\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u8bf7\u6c42\u4f53\u7684\u957f\u5ea6\u662f\u786e\u5b9a\u7684\uff0c\u90a3\u4e48\u54cd\u5e94\u4f53\u7684\u957f\u5ea6\u5462\uff1f\u5148\u6765\u770b\u770b http \u534f\u8bae\u4e2d\u5173\u4e8e\u54cd\u5e94 body \u957f\u5ea6\u7684\u786e\u5b9a\uff1a<\/p>\n
    \n
  1. \n
    \u5bf9\u4e8e http1.0 \u534f\u8bae\u6765\u8bf4\uff0c\u5982\u679c\u54cd\u5e94\u5934\u4e2d\u6709 content-length \u5934\uff0c\u5219\u4ee5 content-length \u7684\u957f\u5ea6\u5c31\u53ef\u4ee5\u77e5\u9053 body \u7684\u957f\u5ea6\u4e86\uff0c\u5ba2\u6237\u7aef\u5728\u63a5\u6536 body \u65f6\uff0c\u5c31\u53ef\u4ee5\u4f9d\u7167\u8fd9\u4e2a\u957f\u5ea6\u6765\u63a5\u6536\u6570\u636e\uff0c\u63a5\u6536\u5b8c\u540e\uff0c\u5c31\u8868\u793a\u8fd9\u4e2a\u8bf7\u6c42\u5b8c\u6210\u4e86\u3002\u800c\u5982\u679c\u6ca1\u6709 content-length \u5934\uff0c\u5219\u5ba2\u6237\u7aef\u4f1a\u4e00\u76f4\u63a5\u6536\u6570\u636e\uff0c\u76f4\u5230\u670d\u52a1\u7aef\u4e3b\u52a8\u65ad\u5f00\u8fde\u63a5\uff0c\u624d\u8868\u793a body \u63a5\u6536\u5b8c\u4e86\u3002<\/p>\n<\/li>\n
  2. \u800c\u5bf9\u4e8e http1.1 \u534f\u8bae\u6765\u8bf4\uff0c\u5982\u679c\u54cd\u5e94\u5934\u4e2d\u7684 Transfer-encoding \u4e3a chunked \u4f20\u8f93\uff0c\u5219\u8868\u793a body \u662f\u6d41\u5f0f\u8f93\u51fa\uff0cbody \u4f1a\u88ab\u5206\u6210\u591a\u4e2a\u5757\uff0c\u6bcf\u5757\u7684\u5f00\u59cb\u4f1a\u6807\u8bc6\u51fa\u5f53\u524d\u5757\u7684\u957f\u5ea6\uff0c\u6b64\u65f6\uff0cbody \u4e0d\u9700\u8981\u901a\u8fc7\u957f\u5ea6\u6765\u6307\u5b9a\u3002\u5982\u679c\u662f\u975e chunked \u4f20\u8f93\uff0c\u800c\u4e14\u6709 content-length\uff0c\u5219\u6309\u7167 content-length \u6765\u63a5\u6536\u6570\u636e\u3002\u5426\u5219\uff0c\u5982\u679c\u662f\u975e chunked\uff0c\u5e76\u4e14\u6ca1\u6709 content-length\uff0c\u5219\u5ba2\u6237\u7aef\u63a5\u6536\u6570\u636e\uff0c\u76f4\u5230\u670d\u52a1\u7aef\u4e3b\u52a8\u65ad\u5f00\u8fde\u63a5\u3002<\/li>\n<\/ol>\n
    \u4ece\u4e0a\u9762\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u9664\u4e86 http1.0 \u4e0d\u5e26 content-length \u4ee5\u53ca http1.1 \u975e chunked \u4e0d\u5e26 content-length \u5916\uff0cbody \u7684\u957f\u5ea6\u662f\u53ef\u77e5\u7684\u3002\u6b64\u65f6\uff0c\u5f53\u670d\u52a1\u7aef\u5728\u8f93\u51fa\u5b8c body \u4e4b\u540e\uff0c\u4f1a\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u957f\u8fde\u63a5\u3002\u80fd\u5426\u4f7f\u7528\u957f\u8fde\u63a5\uff0c\u4e5f\u662f\u6709\u6761\u4ef6\u9650\u5236\u7684\u3002\u5982\u679c\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\u5934\u4e2d\u7684 connection\u4e3aclose\uff0c\u5219\u8868\u793a\u5ba2\u6237\u7aef\u9700\u8981\u5173\u6389\u957f\u8fde\u63a5\uff0c\u5982\u679c\u4e3a keep-alive\uff0c\u5219\u5ba2\u6237\u7aef\u9700\u8981\u6253\u5f00\u957f\u8fde\u63a5\uff0c\u5982\u679c\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\u4e2d\u6ca1\u6709 connection \u8fd9\u4e2a\u5934\uff0c\u90a3\u4e48\u6839\u636e\u534f\u8bae\uff0c\u5982\u679c\u662f http1.0\uff0c\u5219\u9ed8\u8ba4\u4e3a close\uff0c\u5982\u679c\u662f http1.1\uff0c\u5219\u9ed8\u8ba4\u4e3a keep-alive\u3002\u5982\u679c\u7ed3\u679c\u4e3a keepalive\uff0c\u90a3\u4e48\uff0cNginx \u5728\u8f93\u51fa\u5b8c\u54cd\u5e94\u4f53\u540e\uff0c\u4f1a\u8bbe\u7f6e\u5f53\u524d\u8fde\u63a5\u7684 keepalive \u5c5e\u6027\uff0c\u7136\u540e\u7b49\u5f85\u5ba2\u6237\u7aef\u4e0b\u4e00\u6b21\u8bf7\u6c42\u3002\u5f53\u7136\uff0cNginx \u4e0d\u53ef\u80fd\u4e00\u76f4\u7b49\u5f85\u4e0b\u53bb\uff0c\u5982\u679c\u5ba2\u6237\u7aef\u4e00\u76f4\u4e0d\u53d1\u6570\u636e\u8fc7\u6765\uff0c\u5c82\u4e0d\u662f\u4e00\u76f4\u5360\u7528\u8fd9\u4e2a\u8fde\u63a5\uff1f\u6240\u4ee5\u5f53 Nginx \u8bbe\u7f6e\u4e86 keepalive \u7b49\u5f85\u4e0b\u4e00\u6b21\u7684\u8bf7\u6c42\u65f6\uff0c\u540c\u65f6\u4e5f\u4f1a\u8bbe\u7f6e\u4e00\u4e2a\u6700\u5927\u7b49\u5f85\u65f6\u95f4\uff0c\u8fd9\u4e2a\u65f6\u95f4\u662f\u901a\u8fc7\u9009\u9879 keepalive_timeout \u6765\u914d\u7f6e\u7684\uff0c\u5982\u679c\u914d\u7f6e\u4e3a 0\uff0c\u5219\u8868\u793a\u5173\u6389 keepalive\uff0c\u6b64\u65f6\uff0chttp \u7248\u672c\u65e0\u8bba\u662f 1.1 \u8fd8\u662f 1.0\uff0c\u5ba2\u6237\u7aef\u7684 connection \u4e0d\u7ba1\u662f close \u8fd8\u662f keepalive\uff0c\u90fd\u4f1a\u5f3a\u5236\u4e3a close\u3002<\/p>\n
    \u5982\u679c\u670d\u52a1\u7aef\u6700\u540e\u7684\u51b3\u5b9a\u662f keepalive \u6253\u5f00\uff0c\u90a3\u4e48\u5728\u54cd\u5e94\u7684 http \u5934\u91cc\u9762\uff0c\u4e5f\u4f1a\u5305\u542b\u6709 connection \u5934\u57df\uff0c\u5176\u503c\u662f\"Keep-Alive\"\uff0c\u5426\u5219\u5c31\u662f\"Close\"\u3002\u5982\u679c connection \u503c\u4e3a close\uff0c\u90a3\u4e48\u5728 Nginx \u54cd\u5e94\u5b8c\u6570\u636e\u540e\uff0c\u4f1a\u4e3b\u52a8\u5173\u6389\u8fde\u63a5\u3002\u6240\u4ee5\uff0c\u5bf9\u4e8e\u8bf7\u6c42\u91cf\u6bd4\u8f83\u5927\u7684 Nginx \u6765\u8bf4\uff0c\u5173\u6389 keepalive \u6700\u540e\u4f1a\u4ea7\u751f\u6bd4\u8f83\u591a\u7684 time-wait \u72b6\u6001\u7684 socket\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u5f53\u5ba2\u6237\u7aef\u7684\u4e00\u6b21\u8bbf\u95ee\uff0c\u9700\u8981\u591a\u6b21\u8bbf\u95ee\u540c\u4e00\u4e2a server \u65f6\uff0c\u6253\u5f00 keepalive \u7684\u4f18\u52bf\u975e\u5e38\u5927\uff0c\u6bd4\u5982\u56fe\u7247\u670d\u52a1\u5668\uff0c\u901a\u5e38\u4e00\u4e2a\u7f51\u9875\u4f1a\u5305\u542b\u5f88\u591a\u4e2a\u56fe\u7247\u3002\u6253\u5f00 keepalive \u4e5f\u4f1a\u5927\u91cf\u51cf\u5c11 time-wait \u7684\u6570\u91cf\u3002<\/p>\n
    pipe<\/h2>\n
    \u5728 http1.1 \u4e2d\uff0c\u5f15\u5165\u4e86\u4e00\u79cd\u65b0\u7684\u7279\u6027\uff0c\u5373 pipeline\u3002\u90a3\u4e48\u4ec0\u4e48\u662f pipeline \u5462\uff1fpipeline \u5176\u5b9e\u5c31\u662f\u6d41\u6c34\u7ebf\u4f5c\u4e1a\uff0c\u5b83\u53ef\u4ee5\u770b\u4f5c\u4e3a keepalive \u7684\u4e00\u79cd\u5347\u534e\uff0c\u56e0\u4e3a pipeline \u4e5f\u662f\u57fa\u4e8e\u957f\u8fde\u63a5\u7684\uff0c\u76ee\u7684\u5c31\u662f\u5229\u7528\u4e00\u4e2a\u8fde\u63a5\u505a\u591a\u6b21\u8bf7\u6c42\u3002\u5982\u679c\u5ba2\u6237\u7aef\u8981\u63d0\u4ea4\u591a\u4e2a\u8bf7\u6c42\uff0c\u5bf9\u4e8ekeepalive\u6765\u8bf4\uff0c\u90a3\u4e48\u7b2c\u4e8c\u4e2a\u8bf7\u6c42\uff0c\u5fc5\u987b\u8981\u7b49\u5230\u7b2c\u4e00\u4e2a\u8bf7\u6c42\u7684\u54cd\u5e94\u63a5\u6536\u5b8c\u5168\u540e\uff0c\u624d\u80fd\u53d1\u8d77\uff0c\u8fd9\u548c TCP \u7684\u505c\u6b62\u7b49\u5f85\u534f\u8bae\u662f\u4e00\u6837\u7684\uff0c\u5f97\u5230\u4e24\u4e2a\u54cd\u5e94\u7684\u65f6\u95f4\u81f3\u5c11\u4e3a2*RTT<\/code>\u3002\u800c\u5bf9 pipeline \u6765\u8bf4\uff0c\u5ba2\u6237\u7aef\u4e0d\u5fc5\u7b49\u5230\u7b2c\u4e00\u4e2a\u8bf7\u6c42\u5904\u7406\u5b8c\u540e\uff0c\u5c31\u53ef\u4ee5\u9a6c\u4e0a\u53d1\u8d77\u7b2c\u4e8c\u4e2a\u8bf7\u6c42\u3002\u5f97\u5230\u4e24\u4e2a\u54cd\u5e94\u7684\u65f6\u95f4\u53ef\u80fd\u80fd\u591f\u8fbe\u52301*RTT<\/code>\u3002Nginx \u662f\u76f4\u63a5\u652f\u6301 pipeline \u7684\uff0c\u4f46\u662f\uff0cNginx \u5bf9 pipeline \u4e2d\u7684\u591a\u4e2a\u8bf7\u6c42\u7684\u5904\u7406\u5374\u4e0d\u662f\u5e76\u884c\u7684\uff0c\u4f9d\u7136\u662f\u4e00\u4e2a\u8bf7\u6c42\u63a5\u4e00\u4e2a\u8bf7\u6c42\u7684\u5904\u7406\uff0c\u53ea\u662f\u5728\u5904\u7406\u7b2c\u4e00\u4e2a\u8bf7\u6c42\u7684\u65f6\u5019\uff0c\u5ba2\u6237\u7aef\u5c31\u53ef\u4ee5\u53d1\u8d77\u7b2c\u4e8c\u4e2a\u8bf7\u6c42\u3002\u8fd9\u6837\uff0cNginx \u5229\u7528 pipeline \u51cf\u5c11\u4e86\u5904\u7406\u5b8c\u4e00\u4e2a\u8bf7\u6c42\u540e\uff0c\u7b49\u5f85\u7b2c\u4e8c\u4e2a\u8bf7\u6c42\u7684\u8bf7\u6c42\u5934\u6570\u636e\u7684\u65f6\u95f4\u3002\u5176\u5b9e Nginx \u7684\u505a\u6cd5\u5f88\u7b80\u5355\uff0c\u524d\u9762\u8bf4\u5230\uff0cNginx \u5728\u8bfb\u53d6\u6570\u636e\u65f6\uff0c\u4f1a\u5c06\u8bfb\u53d6\u7684\u6570\u636e\u653e\u5230\u4e00\u4e2a buffer \u91cc\u9762\uff0c\u6240\u4ee5\uff0c\u5982\u679c Nginx \u5728\u5904\u7406\u5b8c\u524d\u4e00\u4e2a\u8bf7\u6c42\u540e\uff0c\u5982\u679c\u53d1\u73b0 buffer \u91cc\u9762\u8fd8\u6709\u6570\u636e\uff0c\u5c31\u8ba4\u4e3a\u5269\u4e0b\u7684\u6570\u636e\u662f\u4e0b\u4e00\u4e2a\u8bf7\u6c42\u7684\u5f00\u59cb\uff0c\u7136\u540e\u5c31\u63a5\u4e0b\u6765\u5904\u7406\u4e0b\u4e00\u4e2a\u8bf7\u6c42\uff0c\u5426\u5219\u5c31\u8bbe\u7f6e keepalive\u3002<\/p>\n
    lingering_close<\/h2>\n
    lingering_close\uff0c\u5b57\u9762\u610f\u601d\u5c31\u662f\u5ef6\u8fdf\u5173\u95ed\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u5f53 Nginx \u8981\u5173\u95ed\u8fde\u63a5\u65f6\uff0c\u5e76\u975e\u7acb\u5373\u5173\u95ed\u8fde\u63a5\uff0c\u800c\u662f\u5148\u5173\u95ed tcp \u8fde\u63a5\u7684\u5199\uff0c\u518d\u7b49\u5f85\u4e00\u6bb5\u65f6\u95f4\u540e\u518d\u5173\u6389\u8fde\u63a5\u7684\u8bfb\u3002\u4e3a\u4ec0\u4e48\u8981\u8fd9\u6837\u5462\uff1f\u6211\u4eec\u5148\u6765\u770b\u770b\u8fd9\u6837\u4e00\u4e2a\u573a\u666f\u3002Nginx \u5728\u63a5\u6536\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\u65f6\uff0c\u53ef\u80fd\u7531\u4e8e\u5ba2\u6237\u7aef\u6216\u670d\u52a1\u7aef\u51fa\u9519\u4e86\uff0c\u8981\u7acb\u5373\u54cd\u5e94\u9519\u8bef\u4fe1\u606f\u7ed9\u5ba2\u6237\u7aef\uff0c\u800c Nginx \u5728\u54cd\u5e94\u9519\u8bef\u4fe1\u606f\u540e\uff0c\u5927\u5206\u90e8\u60c5\u51b5\u4e0b\u662f\u9700\u8981\u5173\u95ed\u5f53\u524d\u8fde\u63a5\u3002Nginx \u6267\u884c\u5b8c write()\u7cfb\u7edf\u8c03\u7528\u628a\u9519\u8bef\u4fe1\u606f\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\uff0cwrite()\u7cfb\u7edf\u8c03\u7528\u8fd4\u56de\u6210\u529f\u5e76\u4e0d\u8868\u793a\u6570\u636e\u5df2\u7ecf\u53d1\u9001\u5230\u5ba2\u6237\u7aef\uff0c\u6709\u53ef\u80fd\u8fd8\u5728 tcp \u8fde\u63a5\u7684 write buffer \u91cc\u3002\u63a5\u7740\u5982\u679c\u76f4\u63a5\u6267\u884c close()\u7cfb\u7edf\u8c03\u7528\u5173\u95ed tcp \u8fde\u63a5\uff0c\u5185\u6838\u4f1a\u9996\u5148\u68c0\u67e5 tcp \u7684 read buffer \u91cc\u6709\u6ca1\u6709\u5ba2\u6237\u7aef\u53d1\u9001\u8fc7\u6765\u7684\u6570\u636e\u7559\u5728\u5185\u6838\u6001\u6ca1\u6709\u88ab\u7528\u6237\u6001\u8fdb\u7a0b\u8bfb\u53d6\uff0c\u5982\u679c\u6709\u5219\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef RST \u62a5\u6587\u6765\u5173\u95ed tcp \u8fde\u63a5\u4e22\u5f03 write buffer \u91cc\u7684\u6570\u636e\uff0c\u5982\u679c\u6ca1\u6709\u5219\u7b49\u5f85 write buffer \u91cc\u7684\u6570\u636e\u53d1\u9001\u5b8c\u6bd5\uff0c\u7136\u540e\u518d\u7ecf\u8fc7\u6b63\u5e38\u7684 4 \u6b21\u5206\u624b\u62a5\u6587\u65ad\u5f00\u8fde\u63a5\u3002\u6240\u4ee5,\u5f53\u5728\u67d0\u4e9b\u573a\u666f\u4e0b\u51fa\u73b0 tcp write buffer \u91cc\u7684\u6570\u636e\u5728 write()\u7cfb\u7edf\u8c03\u7528\u4e4b\u540e\u5230 close()\u7cfb\u7edf\u8c03\u7528\u6267\u884c\u4e4b\u524d\u6ca1\u6709\u53d1\u9001\u5b8c\u6bd5\uff0c\u4e14 tcp read buffer \u91cc\u9762\u8fd8\u6709\u6570\u636e\u6ca1\u6709\u8bfb\uff0cclose()\u7cfb\u7edf\u8c03\u7528\u4f1a\u5bfc\u81f4\u5ba2\u6237\u7aef\u6536\u5230 RST \u62a5\u6587\u4e14\u4e0d\u4f1a\u62ff\u5230\u670d\u52a1\u7aef\u53d1\u9001\u8fc7\u6765\u7684\u9519\u8bef\u4fe1\u606f\u6570\u636e\u3002\u90a3\u5ba2\u6237\u7aef\u80af\u5b9a\u4f1a\u60f3\uff0c\u8fd9\u670d\u52a1\u5668\u597d\u9738\u9053\uff0c\u52a8\u4e0d\u52a8\u5c31 reset \u6211\u7684\u8fde\u63a5\uff0c\u8fde\u4e2a\u9519\u8bef\u4fe1\u606f\u90fd\u6ca1\u6709\u3002<\/p>\n
    \u5728\u4e0a\u9762\u8fd9\u4e2a\u573a\u666f\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u5173\u952e\u70b9\u662f\u670d\u52a1\u7aef\u7ed9\u5ba2\u6237\u7aef\u53d1\u9001\u4e86 RST \u5305\uff0c\u5bfc\u81f4\u81ea\u5df1\u53d1\u9001\u7684\u6570\u636e\u5728\u5ba2\u6237\u7aef\u5ffd\u7565\u6389\u4e86\u3002\u6240\u4ee5\uff0c\u89e3\u51b3\u95ee\u9898\u7684\u91cd\u70b9\u662f\uff0c\u8ba9\u670d\u52a1\u7aef\u522b\u53d1 RST \u5305\u3002\u518d\u60f3\u60f3\uff0c\u6211\u4eec\u53d1\u9001 RST \u662f\u56e0\u4e3a\u6211\u4eec\u5173\u6389\u4e86\u8fde\u63a5\uff0c\u5173\u6389\u8fde\u63a5\u662f\u56e0\u4e3a\u6211\u4eec\u4e0d\u60f3\u518d\u5904\u7406\u6b64\u8fde\u63a5\u4e86\uff0c\u4e5f\u4e0d\u4f1a\u6709\u4efb\u4f55\u6570\u636e\u4ea7\u751f\u4e86\u3002\u5bf9\u4e8e\u5168\u53cc\u5de5\u7684 TCP \u8fde\u63a5\u6765\u8bf4\uff0c\u6211\u4eec\u53ea\u9700\u8981\u5173\u6389\u5199\u5c31\u884c\u4e86\uff0c\u8bfb\u53ef\u4ee5\u7ee7\u7eed\u8fdb\u884c\uff0c\u6211\u4eec\u53ea\u9700\u8981\u4e22\u6389\u8bfb\u5230\u7684\u4efb\u4f55\u6570\u636e\u5c31\u884c\u4e86\uff0c\u8fd9\u6837\u7684\u8bdd\uff0c\u5f53\u6211\u4eec\u5173\u6389\u8fde\u63a5\u540e\uff0c\u5ba2\u6237\u7aef\u518d\u53d1\u8fc7\u6765\u7684\u6570\u636e\uff0c\u5c31\u4e0d\u4f1a\u518d\u6536\u5230 RST \u4e86\u3002\u5f53\u7136\u6700\u7ec8\u6211\u4eec\u8fd8\u662f\u9700\u8981\u5173\u6389\u8fd9\u4e2a\u8bfb\u7aef\u7684\uff0c\u6240\u4ee5\u6211\u4eec\u4f1a\u8bbe\u7f6e\u4e00\u4e2a\u8d85\u65f6\u65f6\u95f4\uff0c\u5728\u8fd9\u4e2a\u65f6\u95f4\u8fc7\u540e\uff0c\u5c31\u5173\u6389\u8bfb\uff0c\u5ba2\u6237\u7aef\u518d\u53d1\u9001\u6570\u636e\u6765\u5c31\u4e0d\u7ba1\u4e86\uff0c\u4f5c\u4e3a\u670d\u52a1\u7aef\u6211\u4f1a\u8ba4\u4e3a\uff0c\u90fd\u8fd9\u4e48\u957f\u65f6\u95f4\u4e86\uff0c\u53d1\u7ed9\u4f60\u7684\u9519\u8bef\u4fe1\u606f\u4e5f\u5e94\u8be5\u8bfb\u5230\u4e86\uff0c\u518d\u6162\u5c31\u4e0d\u5173\u6211\u4e8b\u4e86\uff0c\u8981\u602a\u5c31\u602a\u4f60 RP \u4e0d\u597d\u4e86\u3002\u5f53\u7136\uff0c\u6b63\u5e38\u7684\u5ba2\u6237\u7aef\uff0c\u5728\u8bfb\u53d6\u5230\u6570\u636e\u540e\uff0c\u4f1a\u5173\u6389\u8fde\u63a5\uff0c\u6b64\u65f6\u670d\u52a1\u7aef\u5c31\u4f1a\u5728\u8d85\u65f6\u65f6\u95f4\u5185\u5173\u6389\u8bfb\u7aef\u3002\u8fd9\u4e9b\u6b63\u662f lingering_close \u6240\u505a\u7684\u4e8b\u60c5\u3002\u534f\u8bae\u6808\u63d0\u4f9b SO_LINGER \u8fd9\u4e2a\u9009\u9879\uff0c\u5b83\u7684\u4e00\u79cd\u914d\u7f6e\u60c5\u51b5\u5c31\u662f\u6765\u5904\u7406 lingering_close \u7684\u60c5\u51b5\u7684\uff0c\u4e0d\u8fc7 Nginx \u662f\u81ea\u5df1\u5b9e\u73b0\u7684 lingering_close\u3002lingering_close \u5b58\u5728\u7684\u610f\u4e49\u5c31\u662f\u6765\u8bfb\u53d6\u5269\u4e0b\u7684\u5ba2\u6237\u7aef\u53d1\u6765\u7684\u6570\u636e\uff0c\u6240\u4ee5 Nginx \u4f1a\u6709\u4e00\u4e2a\u8bfb\u8d85\u65f6\u65f6\u95f4\uff0c\u901a\u8fc7 lingering_timeout \u9009\u9879\u6765\u8bbe\u7f6e\uff0c\u5982\u679c\u5728 lingering_timeout \u65f6\u95f4\u5185\u8fd8\u6ca1\u6709\u6536\u5230\u6570\u636e\uff0c\u5219\u76f4\u63a5\u5173\u6389\u8fde\u63a5\u3002Nginx \u8fd8\u652f\u6301\u8bbe\u7f6e\u4e00\u4e2a\u603b\u7684\u8bfb\u53d6\u65f6\u95f4\uff0c\u901a\u8fc7 lingering_time \u6765\u8bbe\u7f6e\uff0c\u8fd9\u4e2a\u65f6\u95f4\u4e5f\u5c31\u662f Nginx \u5728\u5173\u95ed\u5199\u4e4b\u540e\uff0c\u4fdd\u7559 socket \u7684\u65f6\u95f4\uff0c\u5ba2\u6237\u7aef\u9700\u8981\u5728\u8fd9\u4e2a\u65f6\u95f4\u5185\u53d1\u9001\u5b8c\u6240\u6709\u7684\u6570\u636e\uff0c\u5426\u5219 Nginx \u5728\u8fd9\u4e2a\u65f6\u95f4\u8fc7\u540e\uff0c\u4f1a\u76f4\u63a5\u5173\u6389\u8fde\u63a5\u3002\u5f53\u7136\uff0cNginx \u662f\u652f\u6301\u914d\u7f6e\u662f\u5426\u6253\u5f00 lingering_close \u9009\u9879\u7684\uff0c\u901a\u8fc7 lingering_close \u9009\u9879\u6765\u914d\u7f6e\u3002<\/p>\n
    \u90a3\u4e48\uff0c\u6211\u4eec\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u662f\u5426\u5e94\u8be5\u6253\u5f00 lingering_close \u5462\uff1f\u8fd9\u4e2a\u5c31\u6ca1\u6709\u56fa\u5b9a\u7684\u63a8\u8350\u503c\u4e86\uff0c\u5982 Maxim Dounin\u6240\u8bf4\uff0clingering_close \u7684\u4e3b\u8981\u4f5c\u7528\u662f\u4fdd\u6301\u66f4\u597d\u7684\u5ba2\u6237\u7aef\u517c\u5bb9\u6027\uff0c\u4f46\u662f\u5374\u9700\u8981\u6d88\u8017\u66f4\u591a\u7684\u989d\u5916\u8d44\u6e90\uff08\u6bd4\u5982\u8fde\u63a5\u4f1a\u4e00\u76f4\u5360\u7740\uff09\u3002<\/p>\n
    \u8fd9\u8282\uff0c\u6211\u4eec\u4ecb\u7ecd\u4e86 Nginx \u4e2d\uff0c\u8fde\u63a5\u4e0e\u8bf7\u6c42\u7684\u57fa\u672c\u6982\u5ff5\uff0c\u4e0b\u8282\uff0c\u6211\u4eec\u8bb2\u57fa\u672c\u7684\u6570\u636e\u7ed3\u6784\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    connection \u5728 Nginx \u4e2d connection \u5c31\u662f\u5bf9 tcp \u8fde\u63a5\u7684\u5c01\u88c5\uff0c\u5176\u4e2d\u5305\u62ec\u8fde\u63a5\u7684 s […]<\/p>\n","protected":false},"author":1,"featured_media":185854,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[42],"tags":[],"class_list":["post-185853","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nginx"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/185853","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=185853"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/185853\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media\/185854"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=185853"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=185853"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=185853"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}