{"id":10006154,"date":"2022-08-09T21:33:40","date_gmt":"2022-08-09T13:33:40","guid":{"rendered":"https:\/\/ityet.com\/?p=10006154"},"modified":"2022-08-09T21:33:40","modified_gmt":"2022-08-09T13:33:40","slug":"%e4%b8%80%e6%96%87%e8%af%a6%e8%a7%a3%e7%94%a8ebpf%e8%a7%82%e6%b5%8bhttp","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10006154","title":{"rendered":"\u4e00\u6587\u8be6\u89e3\u7528eBPF\u89c2\u6d4bHTTP"},"content":{"rendered":"<p>\u7b80\u4ecb\uff1a\u00a0\u968f\u7740eBPF\u63a8\u51fa\uff0c\u7531\u4e8e\u5177\u6709\u9ad8\u6027\u80fd\u3001\u9ad8\u6269\u5c55\u3001\u5b89\u5168\u6027\u7b49\u4f18\u52bf\uff0c\u76ee\u524d\u5df2\u7ecf\u5728\u7f51\u7edc\u3001\u5b89\u5168\u3001\u53ef\u89c2\u5bdf\u7b49\u9886\u57df\u5e7f\u6cdb\u5e94\u7528\uff0c\u540c\u65f6\u4e5f\u8bde\u751f\u4e86\u8bb8\u591a\u4f18\u79c0\u7684\u5f00\u6e90\u9879\u76ee\uff0c\u5982Cilium\u3001Pixie\u7b49\uff0c\u800ciLogtail 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SEC(&#8220;tracepoint\/syscalls\/sys_enter_accept4&#8221;) SEC(&#8220;tracepoint\/syscalls\/sys_exit_accept4&#8221;) SEC(&#8220;tracepoint\/syscalls\/sys_enter_close&#8221;) SEC(&#8220;tracepoint\/syscalls\/sys_exit_close&#8221;) SEC(&#8220;tracepoint\/syscalls\/sys_enter_write&#8221;) SEC(&#8220;tracepoint\/syscalls\/sys_exit_write&#8221;) SEC(&#8220;tracepoint\/syscalls\/sys_enter_read&#8221;) SEC(&#8220;tracepoint\/syscalls\/sys_exit_read&#8221;) SEC(&#8220;tracepoint\/syscalls\/sys_enter_sendmsg&#8221;) SEC(&#8220;tracepoint\/syscalls\/sys_exit_sendmsg&#8221;) SEC(&#8220;tracepoint\/syscalls\/sys_enter_recvmsg&#8221;) SEC(&#8220;tracepoint\/syscalls\/sys_exit_recvmsg&#8221;) &#8230;.\u7ed3\u5408\u4e0a\u8ff0\u6982\u5ff5\uff0c\u6211\u4eec\u4ee5iLogtail\u7684eBPF \u5de5\u4f5c\u6a21\u578b\u4e3a\u4f8b\uff0c\u4ecb\u7ecd\u4e00\u4e2a\u53ef\u89c2\u6d4b\u9886\u57df\u7684eBPF \u7a0b\u5e8f\u662f\u5982\u4f55\u771f\u6b63\u5de5\u4f5c\u7684\u3002\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u53ef\u4ee5\u53c2\u8003\u6b64\u5206\u4eab\uff1a \u57fa\u4e8eeBPF\u7684\u5e94\u7528\u53ef\u89c2\u6d4b\u6280\u672f\u5b9e\u8df5\u3002\u5982\u4e0b\u56fe\u6240\u793a\uff0ciLogtaileBPF \u7a0b\u5e8f\u7684\u5de5\u4f5c\u7a7a\u95f4\u5206\u4e3aKernel Space\u4e0eUser Space\u3002Kernel Space \u4e3b\u8981\u8d1f\u8d23\u6570\u636e\u7684\u6293\u53d6\u4e0e\u9884\u5904\u7406\uff1a\u6293\u53d6\uff1aHook\u6a21\u5757\u4f1a\u4f9d\u636eKProbe\u5b9a\u4e49\u62e6\u622a\u7f51\u7edc\u6570\u636e\uff0c\u865a\u7ebf\u4e2d\u4e3a\u5177\u4f53\u7684KProbe \u62e6\u622a\u7684\u5185\u6838\u51fd\u6570\uff08\u4f7f\u7528\u4e0a\u8ff0\u63cf\u8ff0\u7684SEC\u8fdb\u884c\u5b9a\u4e49\uff09\uff0c\u5982connect\u3001accept \u4ee5\u53cawrite \u7b49\u3002\u9884\u5904\u7406\uff1a\u9884\u5904\u7406\u6a21\u5757\u4f1a\u6839\u636e\u7528\u6237\u6001\u914d\u7f6e\u8fdb\u884c\u6570\u636e\u7684\u62e6\u622a\u4e22\u5f03\u4ee5\u53ca\u6570\u636e\u534f\u8bae\u7684\u63a8\u65ad\uff0c\u53ea\u6709\u7b26\u5408\u9700\u6c42\u7684\u6570\u636e\u624d\u4f1a\u4f20\u9012\u7ed9SendToUserSpace\u6a21\u5757\uff0c\u800c\u5176\u4ed6\u6570\u636e\u5c06\u4f1a\u88ab\u4e22\u5f03\u3002\u5176\u540eSendToUserSpace \u6a21\u5757\u901a\u8fc7eBPF Map \u5c06\u8fc7\u6ee4\u540e\u7684\u6570\u636e\u7531\u5185\u6838\u6001\u6570\u636e\u4f20\u8f93\u5230\u7528\u6237\u6001\u3002User Space \u7684\u6a21\u5757\u4e3b\u8981\u8d1f\u8d23\u6570\u636e\u5206\u6790\u3001\u805a\u5408\u4ee5\u53ca\u7ba1\u7406\uff1a\u5206\u6790\uff1aProcess \u6a21\u5757\u4f1a\u4e0d\u65ad\u5904\u7406eBPF Map\u4e2d\u5b58\u50a8\u7684\u7f51\u7edc\u6570\u636e\uff0c\u9996\u5148\u7531\u4e8eKernel \u5df2\u7ecf\u63a8\u65ad\u534f\u8bae\u7c7b\u578b\uff0cProcess \u6a21\u5757\u5c06\u6839\u636e\u6b64\u7c7b\u578b\u8fdb\u884c\u7ec6\u7c92\u5ea6\u7684\u534f\u8bae\u5206\u6790\uff0c\u5982\u5206\u6790MySQL \u534f\u8bae\u7684SQL\u3001\u5206\u6790HTTP \u534f\u8bae\u7684\u72b6\u6001\u7801\u7b49\u3002\u5176\u6b21\u7531\u4e8e Kernel \u6240\u4f20\u9012\u7684\u8fde\u63a5\u5143\u6570\u636e\u4fe1\u606f\u53ea\u6709Pid \u4e0eFD \u7b49\u8fdb\u7a0b\u7c92\u5ea6\u5143\u4fe1\u606f\uff0c\u800c\u5bf9\u4e8eKubernetes \u53ef\u89c2\u6d4b\u573a\u666f\u6765\u8bf4\uff0cPod\u3001Container \u7b49\u8d44\u6e90\u5b9a\u4e49\u66f4\u6709\u610f\u4e49\uff0c\u6240\u4ee5Correlate Meta \u6a21\u5757\u4f1a\u4e3aProcess \u5904\u7406\u540e\u7684\u6570\u636e\u7ed1\u5b9a\u5bb9\u5668\u76f8\u5173\u7684\u5143\u6570\u636e\u4fe1\u606f\u3002\u805a\u5408\uff1a\u5f53\u7ed1\u5b9a\u5143\u6570\u636e\u4fe1\u606f\u540e\uff0cAggreate \u6a21\u5757\u4f1a\u5bf9\u6570\u636e\u8fdb\u884c\u805a\u5408\u64cd\u4f5c\u4ee5\u907f\u514d\u91cd\u590d\u6570\u636e\u4f20\u8f93\uff0c\u6bd4\u5982\u805a\u5408\u5468\u671f\u5185\u67d0SQL \u8c03\u75281000\u6b21\uff0cAggreate \u6a21\u5757\u4f1a\u5c06\u6700\u7ec8\u6570\u636e\u62bd\u8c61\u4e3a XSQL\uff1a1000 \u7684\u5f62\u5f0f\u8fdb\u884c\u4e0a\u4f20\u3002\u7ba1\u7406\uff1a\u6574\u4e2aeBPF \u7a0b\u5e8f\u4ea4\u4e92\u7740\u5927\u91cf\u7740\u8fdb\u7a0b\u4e0e\u8fde\u63a5\u6570\u636e\uff0c\u56e0\u6b64eBPF \u7a0b\u5e8f\u4e2d\u5bf9\u8c61\u7684\u751f\u547d\u5468\u671f\u9700\u8981\u4e0e\u673a\u5668\u5b9e\u9645\u72b6\u6001\u76f8\u7b26\uff0c\u5f53\u8fdb\u7a0b\u6216\u94fe\u63a5\u91ca\u653e\uff0c\u76f8\u5e94\u7684\u5bf9\u8c61\u4e5f\u9700\u8981\u91ca\u653e\uff0c\u8fd9\u4e5f\u6b63\u5bf9\u5e94\u7740Connection Management \u4e0eGarbage Collection \u7684\u804c\u8d23\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042291597\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>eBPF \u6570\u636e\u89e3\u6790HTTP 1 \u3001HTTP1.1\u4ee5\u53caHTTP2 \u6570\u636e\u534f\u8bae\u90fd\u662f\u57fa\u4e8eTCP\u7684\uff0c\u53c2\u8003\u4e0a\u6587\uff0c\u4e00\u5b9a\u6709\u4ee5\u4e0b\u51fd\u6570\u8c03\u7528:connect \u51fd\u6570\uff1a\u51fd\u6570\u7b7e\u540d\u4e3aint connect(int sockfd, const struct sockaddr <em>addr, socklen_t addrlen), \u4ece\u51fd\u6570\u7b7e\u540d\u5165\u53c2\u53ef\u4ee5\u83b7\u53d6\u4f7f\u7528\u7684socket \u7684fd\uff0c\u4ee5\u53ca\u5bf9\u7aef\u5730\u5740\u7b49\u4fe1\u606f\u3002accept \u51fd\u6570\uff1a\u51fd\u6570\u7b7e\u540d\u4e3aint accept(int sockfd, struct sockaddr\u00a0addr, socklen_t\u00a0addrlen), \u4ece\u51fd\u6570\u7b7e\u540d\u5165\u53c2\u540c\u6837\u53ef\u4ee5\u83b7\u53d6\u4f7f\u7528\u7684socket \u7684fd\uff0c\u4ee5\u53ca\u5bf9\u7aef\u5730\u5740\u7b49\u4fe1\u606f\u3002sendmsg\u51fd\u6570\uff1a\u51fd\u6570\u7b7e\u540d\u4e3a ssize_t sendmsg(int sockfd, const struct msghdr <\/em>msg, int flags),\u4ece\u51fd\u6570\u7b7e\u540d\u53ef\u4ee5\u770b\u51fa\uff0c\u57fa\u4e8e\u6b64\u51fd\u6570\u53ef\u4ee5\u62ff\u5230\u53d1\u9001\u7684\u6570\u636e\u5305\uff0c\u4ee5\u53ca\u4f7f\u7528\u7684socket \u7684fd\u4fe1\u606f\uff0c\u4f46\u65e0\u6cd5\u76f4\u63a5\u57fa\u4e8e\u5165\u53c2\u77e5\u6653\u5bf9\u7aef\u5730\u5740\u3002recvmsg\u51fd\u6570\uff1a\u51fd\u6570\u7b7e\u540d\u4e3a ssize_t recvmsg(int sockfd, struct msghdr *msg, int flags),\u4ece\u51fd\u6570\u7b7e\u540d\u53ef\u4ee5\u770b\u51fa\uff0c\u57fa\u4e8e\u6b64\u51fd\u6570\u6211\u4eec\u62ff\u5230\u63a5\u6536\u7684\u6570\u636e\u5305\uff0c\u4ee5\u53ca\u4f7f\u7528\u7684socket \u7684fd\u4fe1\u606f\uff0c\u4f46\u65e0\u6cd5\u76f4\u63a5\u57fa\u4e8e\u5165\u53c2\u77e5\u6653\u5bf9\u7aef\u5730\u5740\u3002close \u51fd\u6570\uff1a\u51fd\u6570\u7b7e\u540d\u4e3a int close(int fd),\u4ece\u51fd\u6570\u7b7e\u540d\u53ef\u4ee5\u770b\u51fa\uff0c\u57fa\u4e8e\u6b64\u51fd\u6570\u53ef\u4ee5\u62ff\u5230\u5373\u5c06\u5173\u95ed\u7684fd\u4fe1\u606f\u3002HTTP 1 \/ HTTP 1.1 \u77ed\u8fde\u63a5\u6a21\u5f0fHTTP \u4e8e1996\u5e74\u63a8\u51fa\uff0cHTTP 1 \u5728\u7528\u6237\u5c42\u662f\u77ed\u8fde\u63a5\u6a21\u578b\uff0c\u4e5f\u5c31\u610f\u5473\u7740\u6bcf\u4e00\u6b21\u53d1\u9001\u6570\u636e\uff0c\u90fd\u4f1a\u4f34\u968f\u7740connect\u3001accept\u4ee5\u53caclose \u51fd\u6570\u7684\u8c03\u7528\uff0c\u8fd9\u5c31\u4ee5\u4e3a\u8fd9eBPF\u7a0b\u5e8f\u53ef\u4ee5\u5f88\u5bb9\u6613\u7684\u5bfb\u627e\u5230connect \u7684\u8d77\u59cb\u70b9\uff0c\u5c06\u4f20\u8f93\u6570\u636e\u4e0e\u5730\u5740\u8fdb\u884c\u7ed1\u5b9a\uff0c\u8fdb\u800c\u6784\u5efa\u670d\u52a1\u7684\u4e0a\u4e0b\u6e38\u8c03\u7528\u5173\u7cfb\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042291598\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u53ef\u4ee5\u770b\u51faHTTP 1 \u6216\u8005HTTP1.1 \u77ed\u8fde\u63a5\u6a21\u5f0f\u662f\u5bf9\u4e8eeBPF \u662f\u975e\u5e38\u53cb\u597d\u7684\u534f\u8bae\uff0c\u56e0\u4e3a\u53ef\u4ee5\u8f7b\u677e\u7684\u5173\u8054\u5730\u5740\u4fe1\u606f\u4e0e\u6570\u636e\u4fe1\u606f\uff0c\u4f46\u56de\u5230HTTP 1\/HTTP1.1 \u77ed\u8fde\u63a5\u6a21\u5f0f \u672c\u8eab\u6765\u8bf4\uff0c\u2018\u53cb\u597d\u7684\u4ee3\u4ef7\u2019\u4e0d\u4ec5\u610f\u5473\u7740\u5e26\u6765\u6bcf\u6b21TCP \u8fde\u63a5\u4e0e\u91ca\u653e\u8fde\u63a5\u7684\u6d88\u8017\uff0c\u5982\u679c\u4e24\u6b21\u4f20\u8f93\u6570\u636e\u7684HTTP Header \u5934\u76f8\u540c\uff0cHeader \u5934\u4e5f\u5b58\u5728\u5197\u4f59\u4f20\u8f93\u95ee\u9898\uff0c\u6bd4\u5982\u4e0b\u5217\u6570\u636e\u7684\u5934Host\u3001Accept \u7b49\u5b57\u6bb5\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042291599\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>HTTP 1.1 \u957f\u8fde\u63a5HTTP 1.1 \u4e8eHTTP 1.0 \u53d1\u5e03\u7684\u4e00\u5e74\u540e\u53d1\u5e03\uff081997\u5e74\uff09\uff0c\u63d0\u4f9b\u4e86\u7f13\u5b58\u5904\u7406\u3001\u5e26\u5bbd\u4f18\u5316\u3001\u9519\u8bef\u901a\u77e5\u7ba1\u7406\u3001host\u5934\u5904\u7406\u4ee5\u53ca\u957f\u8fde\u63a5\u7b49\u7279\u6027\u3002\u800c\u957f\u8fde\u63a5\u7684\u5f15\u5165\u4e5f\u90e8\u5206\u89e3\u51b3\u4e86\u4e0a\u8ff0HTTP1\u4e2d\u6bcf\u6b21\u53d1\u9001\u6570\u636e\u90fd\u9700\u8981\u7ecf\u8fc7\u4e09\u6b21\u63e1\u624b\u4ee5\u53ca\u56db\u6b21\u6325\u624b\u7684\u8fc7\u7a0b\uff0c\u63d0\u5347\u4e86\u6570\u636e\u7684\u53d1\u9001\u6548\u7387\u3002\u4f46\u5bf9\u4e8e\u4f7f\u7528eBPF \u89c2\u5bdfHTTP\u6570\u636e\u6765\u8bf4\uff0c\u4e5f\u5e26\u6765\u4e86\u65b0\u7684\u95ee\u9898\uff0c\u4e0a\u6587\u63d0\u5230\u5efa\u7acb\u5730\u5740\u4e0e\u6570\u636e\u7684\u7ed1\u5b9a\u4f9d\u8d56\u4e8e\u5728connect \u65f6\u8fdb\u884cprobe\uff0c\u901a\u8fc7connect \u53c2\u6570\u62ff\u5230\u6570\u636e\u5730\u5740\uff0c\u4ece\u800c\u4e0e\u540e\u7eed\u7684\u6570\u636e\u5305\u7ed1\u5b9a\u3002\u4f46\u56de\u5230\u957f\u8fde\u63a5\u60c5\u51b5\uff0c\u5047\u5982connect \u4e8e1\u5c0f\u65f6\u4e4b\u524d\u5efa\u7acb\uff0c\u800c\u6b64\u65f6\u624d\u542f\u52a8eBPF\u7a0b\u5e8f\uff0c\u6240\u4ee5\u6211\u4eec\u53ea\u80fd\u63a2\u6d4b\u5230\u6570\u636e\u5305\u51fd\u6570\u7684\u8c03\u7528\uff0c\u5982send\u6216recv\u51fd\u6570\u3002\u6b64\u65f6\u5e94\u8be5\u5982\u4f55\u5efa\u7acb\u5730\u5740\u4e0e\u6570\u636e\u7684\u5173\u7cfb\u5462\uff1f<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042291600\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u9996\u5148\u53ef\u4ee5\u56de\u5230\u63a2\u6d4b\u51fd\u6570\u7684\u5b9a\u4e49\uff0c\u53ef\u4ee5\u53d1\u73b0\u6b64\u65f6\u867d\u7136\u6ca1\u6709\u660e\u786e\u7684\u5730\u5740\u4fe1\u606f\uff0c\u4f46\u662f\u53ef\u4ee5\u77e5\u9053\u6b64TCP \u62a5\u6587\u4f7f\u7528\u7684Socket \u4e0eFD \u4fe1\u606f\u3002\u56e0\u6b64\u53ef\u4ee5\u4f7f\u7528 netlink \u83b7\u53d6\u6b64Socket \u7684\u5143\u4fe1\u606f\uff0c\u8fdb\u884c\u5bf9\u957f\u8fde\u63a5\u8865\u5145\u5bf9\u7aef\u5730\u5740\uff0c\u8fdb\u800c\u5728HTTP 1.1 \u957f\u8fde\u63a5\u534f\u8bae\u6784\u5efa\u670d\u52a1\u62d3\u6251\u4e0e\u5206\u6790\u6570\u636e\u660e\u7ec6\u3002ssize_t sendmsg(int sockfd, const struct msghdr\u00a0msg, int flags) ssize_t recvmsg(int sockfd, struct msghdr\u00a0msg, int flags)<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042291601\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>HTTP 2\u5728HTTP 1.1 \u53d1\u5e03\u540e\uff0c\u7531\u4e8e\u5197\u4f59\u4f20\u8f93\u4ee5\u53ca\u4f20\u8f93\u6a21\u578b\u4e32\u884c\u7b49\u95ee\u9898\uff0cRPC \u6846\u67b6\u57fa\u672c\u4e0a\u90fd\u662f\u8fdb\u884c\u4e86\u79c1\u6709\u5316\u534f\u8bae\u5b9a\u4e49\uff0c\u5982Dubbo \u7b49\u3002\u800c\u57282015\u5e74\uff0cHTTP2 \u7684\u53d1\u5e03\u6253\u7834\u4e86\u4ee5\u5f80\u5bf9HTTP \u534f\u8bae\u7684\u5f88\u591a\u8bdf\u75c5\uff0c\u9664\u89e3\u51b3\u5728\u4e0a\u8ff0\u6211\u4eec\u63d0\u5230\u7684Header \u5934\u5197\u4f59\u4f20\u8f93\u95ee\u9898\uff0c\u8fd8\u89e3\u51b3TCP\u8fde\u63a5\u6570\u9650\u5236\u3001\u4f20\u8f93\u6548\u7387\u3001\u961f\u5934\u62e5\u585e\u7b49\u95ee\u9898\uff0c\u800c gRPC\u6b63\u5f0f\u57fa\u4e8eHTTP2 \u6784\u5efa\u4e86\u9ad8\u6027\u80fdRPC \u6846\u67b6\uff0c\u4e5f\u8ba9HTTP 1 \u65f6\u4ee3\u5c42\u51fa\u4e0d\u7a77\u7684\u901a\u4fe1\u534f\u8bae\uff0c\u4e5f\u9010\u6e10\u8d70\u5411\u4e86\u5f52\u4e00\u65f6\u4ee3\uff0c\u6bd4\u5982Dubbo3 \u5168\u9762\u517c\u5bb9gRPC\/HTTP2 \u534f\u8bae\u3002\u7279\u6027\u4ee5\u4e0b\u5185\u5bb9\u9996\u5148\u4ecb\u7ecd\u4e00\u4e9bHTTP2 \u4e0eeBPF \u53ef\u89c2\u5bdf\u6027\u76f8\u5173\u7684\u5173\u952e\u7279\u6027\u3002\u591a\u8def\u590d\u7528HTTP 1 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\u4e5f\u8fdb\u884c\u4e86\u5206\u79bb\u8bbe\u8ba1\uff0c\u6bcf\u6b21\u4f20\u8f93\u6570\u636eHeaer \u5e27\u53d1\u9001\u540e\u4e3a\u6b64\u540eData\u5e27\u7684\u7edf\u4e00\u5934\u90e8\uff0c\u8fdb\u4e00\u6b65\u63d0\u793a\u4e86\u4f20\u8f93\u6548\u7387\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042291602\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u9996\u90e8\u538b\u7f29HTTP \u9996\u90e8\u7528\u4e8e\u53d1\u9001\u4e0e\u8bf7\u6c42\u548c\u54cd\u5e94\u76f8\u5173\u7684\u989d\u5916\u4fe1\u606f\uff0cHTTP2\u5f15\u5165\u9996\u90e8\u538b\u7f29\u6982\u5ff5\uff0c\u4f7f\u7528\u4e0e\u6b63\u6587\u538b\u7f29\u4e0d\u540c\u7684\u6280\u672f\uff0c\u652f\u6301\u8de8\u8bf7\u6c42\u538b\u7f29\u9996\u90e8\uff0c\u53ef\u4ee5\u907f\u514d\u6b63\u6587\u538b\u7f29\u4f7f\u7528\u7b97\u6cd5\u7684\u5b89\u5168\u95ee\u9898\u3002HTTP2\u91c7\u7528\u4e86\u57fa\u4e8e\u67e5\u8be2\u8868\u548cHuffman\u7f16\u7801\u7684\u538b\u7f29\u65b9\u5f0f\uff0c\u4f7f\u7528\u7531\u9884\u5148\u5b9a\u4e49\u7684\u9759\u6001\u8868\u548c\u4f1a\u8bdd\u8fc7\u7a0b\u4e2d\u521b\u5efa\u7684\u52a8\u6001\u8868\uff0c\u6ca1\u6709\u5f15\u7528\u7d22\u5f15\u8868\u7684\u9996\u90e8\u53ef\u4ee5\u4f7f\u7528ASCII\u7f16\u7801\u6216\u8005Huffman\u7f16\u7801\u4f20\u8f93\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042291603\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u4f46\u968f\u7740\u6027\u80fd\u7684\u63d0\u5347\uff0c\u4e5f\u610f\u5473\u7740\u8d8a\u6765\u8d8a\u591a\u7684\u6570\u636e\u907f\u514d\u4f20\u8f93\uff0c\u8fd9\u4e5f\u540c\u65f6\u610f\u5473\u7740\u5bf9eBPF \u7a0b\u5e8f\u53ef\u611f\u77e5\u7684\u6570\u636e\u4f1a\u66f4\u5c11\uff0c\u56e0\u6b64HTTP2\u534f\u8bae\u7684\u53ef\u89c2\u5bdf\u6027\u4e5f\u5e26\u6765\u4e86\u65b0\u7684\u95ee\u9898\uff0c\u4ee5\u4e0b\u6211\u4eec\u4f7f\u7528gRPC\u4e0d\u540c\u6a21\u5f0f\u4ee5\u53caWireshark \u5206\u6790HTTP2\u534f\u8bae\u5bf9eBPF \u7a0b\u5e8f\u53ef\u89c2\u6d4b\u6027\u7684\u6311\u6218\u3002GRPCSimple RPCSimple RPC \u662fGRPC \u6700\u7b80\u5355\u7684\u901a\u4fe1\u6a21\u5f0f\uff0c\u8bf7\u6c42\u548c\u54cd\u5e94\u90fd\u662f\u4e00\u6761\u4e8c\u8fdb\u5236\u6d88\u606f\uff0c\u5982\u679c\u4fdd\u6301\u8fde\u63a5\u53ef\u4ee5\u7c7b\u6bd4\u4e3aHTTP 1.1 \u7684\u957f\u8fde\u63a5\u6a21\u5f0f\uff0c\u6bcf\u6b21\u53d1\u9001\u6536\u5230\u54cd\u5e94\uff0c\u4e4b\u540e\u518d\u7ee7\u7eed\u53d1\u9001\u6570\u636e\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042291604\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u4f46\u4e0eHTTP 1 \u4e0d\u540c\u7684\u662f\u9996\u90e8\u538b\u7f29\u7684\u5f15\u5165\uff0c\u5982\u679c\u7ef4\u6301\u957f\u8fde\u63a5\u72b6\u6001\uff0c\u540e\u7eed\u53d1\u7684\u6570\u636e\u5305Header \u4fe1\u606f\u5c06\u53ea\u5b58\u50a8\u7d22\u5f15\u503c\uff0c\u800c\u4e0d\u662f\u539f\u59cb\u503c\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u4e0b\u56fe\u4e3aWirshark \u6293\u53d6\u7684\u6570\u636e\u5305\uff0c\u9996\u6b21\u53d1\u9001\u662f\u5305\u542b\u5b8c\u6574Header\u5e27\u6570\u636e\uff0c\u800c\u540e\u7eedHeders \u5e27\u957f\u5ea6\u964d\u4f4e\u4e3a15\uff0c\u51cf\u5c11\u4e86\u5927\u91cf\u91cd\u590d\u6570\u636e\u7684\u4f20\u8f93\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042291605\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042291606\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>Stream \u6a21\u5f0fStream \u6a21\u5f0f\u662fgRPC \u5e38\u7528\u7684\u6a21\u5f0f\uff0c\u5305\u542bServer-side streaming RPC\uff0cClient-side streaming RPC\uff0cBidirectional streaming RPC\uff0c\u4ece\u4f20\u8f93\u7f16\u7801\u4e0a\u6765\u8bf4\u4e0eSimple RPC \u6a21\u5f0f\u6ca1\u6709\u4e0d\u540c\uff0c\u90fd\u5206\u4e3aHeader \u5e27\u3001Data\u5e27\u7b49\u3002\u4f46\u4e0d\u540c\u7684\u5728\u4e8eData \u5e27\u7684\u6570\u91cf\uff0cSimple RPC \u4e00\u6b21\u53d1\u9001\u6216\u54cd\u5e94\u53ea\u5305\u542b\u4e00\u4e2aData\u5e27 \u6a21\u5f0f\uff0c\u800cStream \u6a21\u5f0f\u53ef\u4ee5\u5305\u542b\u591a\u4e2a\u30021\u3001Server-side streaming RPC\uff1a\u4e0eSimple RPC \u6a21\u5f0f\u4e0d\u540c\uff0c\u5728Server-side streaming RPC \u4e2d\uff0c\u5f53\u4ece\u5ba2\u6237\u7aef\u63a5\u6536\u5230\u8bf7\u6c42\u65f6\uff0c\u670d\u52a1\u5668\u4f1a\u53d1\u56de\u4e00\u7cfb\u5217\u54cd\u5e94\u3002\u6b64\u54cd\u5e94\u6d88\u606f\u5e8f\u5217\u5728\u5ba2\u6237\u7aef\u53d1\u8d77\u7684\u540c\u4e00 HTTP \u6d41\u4e2d\u53d1\u9001\u3002\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u670d\u52a1\u5668\u6536\u5230\u6765\u81ea\u5ba2\u6237\u7aef\u7684\u6d88\u606f\uff0c\u5e76\u4ee5\u5e27\u6d88\u606f\u7684\u5f62\u5f0f\u53d1\u9001\u591a\u4e2a\u54cd\u5e94\u6d88\u606f\u3002\u6700\u540e\uff0c\u670d\u52a1\u5668\u901a\u8fc7\u53d1\u9001\u5e26\u6709\u547c\u53eb\u72b6\u6001\u8be6\u7ec6\u4fe1\u606f\u7684\u5c3e\u968f\u5143\u6570\u636e\u6765\u7ed3\u675f\u6d41\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042291607\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>2\u3001Client-side streaming RPC\uff1a \u5728\u5ba2\u6237\u7aef\u6d41\u5f0f RPC \u6a21\u5f0f\u4e2d\uff0c\u5ba2\u6237\u7aef\u5411\u670d\u52a1\u5668\u53d1\u9001\u591a\u6761\u6d88\u606f\uff0c\u800c\u670d\u52a1\u5668\u53ea\u8fd4\u56de\u4e00\u6761\u6d88\u606f\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042291608\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>3\u3001Bidirectional streaming RPC\uff1a\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u90fd\u5411\u5bf9\u65b9\u53d1\u9001\u6d88\u606f\u6d41\u3002\u5ba2\u6237\u7aef\u901a\u8fc7\u53d1\u9001\u6807\u5934\u5e27\u6765\u8bbe\u7f6e HTTP \u6d41\u3002\u5efa\u7acb\u8fde\u63a5\u540e\uff0c\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u90fd\u53ef\u4ee5\u540c\u65f6\u53d1\u9001\u6d88\u606f\uff0c\u800c\u65e0\u9700\u7b49\u5f85\u5bf9\u65b9\u5b8c\u6210\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042291609\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>tracepoint\/kprobe\u7684\u6311\u6218\u4ece\u4e0a\u8ff0wirshark \u62a5\u6587\u4ee5\u53ca\u534f\u8bae\u6a21\u5f0f\u53ef\u4ee5\u770b\u51fa\uff0c\u5386\u53f2\u9488\u5bf9HTTP1\u65f6\u4ee3\u4f7f\u7528\u7684tracepoint\/kprobe \u4f1a\u5b58\u5728\u4ee5\u4e0b\u6311\u6218\uff1aStream \u6a21\u5f0f: \u6bd4\u5982\u5728Server-side stream \u4e0b\uff0c\u5047\u5982tracepoint\/kprobe \u63a2\u6d4b\u7684\u70b9\u4e3aData\u5e27\uff0c\u56e0Data \u5e27\u56e0\u4e3a\u65e0\u6cd5\u5173\u8054Header \u5e27\uff0c\u90fd\u5c06\u53d8\u6210\u65e0\u6548Data \u5e27\uff0c\u4f46\u5bf9\u4e8egRPC \u4f7f\u7528\u573a\u666f\u6765\u8bf4\u8fd8\u597d\uff0c\u4e00\u822cRPC \u53d1\u9001\u6570\u636e\u548c\u63a5\u53d7\u6570\u636e\u90fd\u5f88\u5feb\uff0c\u6240\u4ee5\u5f88\u5feb\u5c31\u4f1a\u6709\u65b0\u7684Header 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\u7684\u5c3e\u90e8\u5e27\u624d\u8fdb\u884cprobe\uff0c\u5bf9\u4e8e\u540e\u7eed\u7684Header2 \u5e27\u5927\u6982\u7387\u4e0d\u4f1a\u5b58\u5728\u5b8c\u6574\u7684Header \u5143\u6570\u636e\uff0c\u5982\u4e0b\u56feWireshark \u622a\u56fe\uff0c\u5305\u542b\u4e86\u5f88\u591aHeader \u4fe1\u606f\u7684Header \u957f\u5ea6\u4ec5\u4ec5\u4e3a15\uff0c\u53ef\u4ee5\u770b\u51faeBPF tracepoints\/kprobe \u5bf9\u4e8e\u8fd9\u79cd\u60c5\u51b5\u5f88\u96be\u5904\u7406\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042291611\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><\/p>\n<p><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042291612\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u4ece\u4e0a\u6587\u53ef\u77e5\uff0cHTTP2 \u53ef\u4ee5\u5f52\u5c5e\u4e8e\u6709\u72b6\u6001\u7684\u534f\u8bae\uff0c\u800cTracepoint\/Kprobe \u5bf9\u6709\u72b6\u6001\u7684\u534f\u8bae\u6570\u636e\u5f88\u96be\u5904\u7406\u5b8c\u5584\uff0c\u67d0\u4e9b\u573a\u666f\u4e0b\u53ea\u80fd\u505a\u5230\u9000\u5316\u5904\u7406\uff0c\u4ee5\u4e0b\u4e3a\u4f7f\u7528Tracepoint\/Kprobe \u5904\u7406\u7684\u57fa\u672c\u6d41\u7a0b\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042291613\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>Uprobe \u53ef\u884c\u5417\uff1f\u4ece\u4e0a\u8ff0tracepoint\/kprobe \u7684\u6311\u6218\u53ef\u4ee5\u770b\u5230\uff0cHTTP 2 \u662f\u4e00\u79cd\u5f88\u96be\u88ab\u89c2\u6d4b\u7684\u534f\u8bae\uff0c\u5728HTTP2 \u7684\u534f\u8bae\u89c4\u8303\u4e0a\uff0c\u4e3a\u51cf\u5c11Header \u7684\u4f20\u8f93\uff0cclient \u7aef\u4ee5\u53caserver \u7aef\u90fd\u9700\u8981\u7ef4\u62a4Header \u7684\u6570\u636e\uff0c\u4e0b\u56fe\u662fgrpc \u5b9e\u73b0\u7684HTTP2 \u5ba2\u6237\u7aef\u7ef4\u62a4Header \u5143\u4fe1\u606f\u7684\u622a\u56fe\uff0c\u6240\u4ee5\u5728\u5e94\u7528\u5c42\u53ef\u4ee5\u505a\u5230\u62ff\u5230\u5b8c\u6574Header\u6570\u636e\uff0c\u4e5f\u5c31\u7ed5\u8fc7\u6765\u9996\u90e8\u538b\u7f29\u95ee\u9898\uff0c\u800c\u9488\u5bf9\u5e94\u7528\u5c42\u534f\u8bae\uff0ceBPF \u63d0\u4f9b\u7684\u63a2\u6d4b\u624b\u6bb5\u662fUprobe\uff08\u7528\u6237\u6001\uff09\uff0c\u800cPixie \u9879\u76ee\u4e5f\u6b63\u662f\u57fa\u4e8eUprobe \u5b9e\u8df5\u4e86gRPC HTTP2 \u6d41\u91cf\u7684\u63a2\u6d4b\uff0c\u8be6\u7ec6\u5185\u5bb9\u53ef\u4ee5\u53c2\u8003\u6b64\u6587\u7ae0[1]\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042291614\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u4e0b\u56fe\u5c55\u793a\u4e86\u4f7f\u7528Uprobe \u89c2\u6d4bGo gRPC \u6d41\u91cf\u7684\u57fa\u672c\u6d41\u7a0b\uff0c\u5982\u5176\u4e2dwriteHeader \u7684\u51fd\u6570\u5b9a\u4e49\u4e3a func (l *loopyWriter) writeHeader(streamID uint32, endStream bool, hf []hpack.HeaderField, onWrite func()), \u53ef\u4ee5\u770b\u5230\u660e\u786e\u7684Header \u6587\u672c\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042291615\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>Kprobe \u4e0eUprobe \u5bf9\u6bd4\u4ece\u4e0a\u6587\u53ef\u4ee5\u770b\u51faUprobe \u5b9e\u73b0\u7b80\u5355\uff0c\u4e14\u4e0d\u5b58\u5728\u6570\u636e\u9000\u5316\u7684\u95ee\u9898\uff0c\u4f46Uprobe \u771f\u7684\u5b8c\u7f8e\u5417\uff1f\u517c\u5bb9\u6027\uff1a\u4e0a\u8ff0\u65b9\u6848\u4ec5\u4ec5\u662f\u57fa\u4e8eGolang gRPC \u7684 \u7279\u5b9a\u65b9\u6cd5\u8fdb\u884c\u63a2\u6d4b\uff0c\u4e5f\u5c31\u610f\u5473\u7740\u4e0a\u8ff0\u4ec5\u80fd\u8986\u76d6Golang gRPC \u6d41\u91cf\u7684\u89c2\u5bdf\uff0c\u5bf9\u4e8eGolang \u5176\u4ed6HTTP2 \u5e93\u65e0\u6cd5\u652f\u6301\u3002\u591a\u8bed\u8a00\u6027\uff1aUprobe \u53ea\u80fd\u57fa\u4e8e\u65b9\u6cd5\u7b7e\u540d\u8fdb\u884c\u63a2\u6d4b\uff0c\u66f4\u9002\u7528\u4e8eC\/GO \u8fd9\u79cd\u7eaf\u7f16\u8bd1\u578b\u8bed\u8a00\uff0c\u800c\u5bf9\u4e8eJava \u8fd9\u79cdJVM \u8bed\u8a00\uff0c\u56e0\u4e3a\u8fd0\u884c\u65f6\u52a8\u6001\u751f\u6210\u7b26\u53f7\u8868\uff0c\u867d\u7136\u53ef\u4ee5\u4f9d\u9760\u4e00\u4e9bjavaagent \u5c06java \u7a0b\u5e8f\u7528\u4e8eUprobe\uff0c\u4f46\u662f\u76f8\u5bf9\u4e8e\u7eaf\u7f16\u8bd1\u578b\u8bed\u8a00\uff0c\u7528\u6237\u4f7f\u7528\u6210\u672c\u6216\u6539\u9020\u6210\u672c\u8fd8\u662f\u4f1a\u66f4\u9ad8\u4e00\u4e9b\u3002\u7a33\u5b9a\u6027\uff1aUprobe \u76f8\u5bf9\u4e8etracepoint\/kprobe \u6765\u8bf4\u662f\u4e0d\u7a33\u5b9a\u7684\uff0c\u5047\u5982\u63a2\u6d4b\u7684\u51fd\u6570\u51fd\u6570\u7b7e\u540d\u6709\u6539\u53d8\uff0c\u8fd9\u5c31\u610f\u5473\u7740Uprobe \u7a0b\u5e8f\u5c06\u65e0\u6cd5\u5de5\u4f5c\uff0c\u56e0\u4e3a\u51fd\u6570\u6ce8\u518c\u8868\u7684\u6539\u53d8\u5c06\u4f7f\u5f97Uprobe \u65e0\u6cd5\u627e\u5230\u5207\u5165\u70b9\u3002\u7efc\u5408\u4e0b\u67652\u79cd\u65b9\u6848\u5bf9\u6bd4\u5982\u4e0b\uff0c\u53ef\u4ee5\u770b\u52302\u79cd\u65b9\u6848\u5bf9\u4e8eHTTP2\uff08\u6709\u72b6\u6001\uff09\u7684\u89c2\u6d4b\u90fd\u5b58\u5728\u90e8\u5206\u53d6\u820d\uff1a<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042291616\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u603b\u7ed3\u4e0a\u8ff0\u6211\u4eec\u56de\u987e\u4e86HTTP1\u5230HTTP2 \u65f6\u4ee3\u7684\u534f\u8bae\u53d8\u8fc1\uff0c\u4e5f\u770b\u5230HTTP2 \u63d0\u5347\u4f20\u8f93\u6548\u7387\u505a\u7684\u79cd\u79cd\u52aa\u529b\uff0c\u800c\u6b63\u662fHTTP2\u7684\u5de8\u5927\u6548\u7387\u63d0\u5347\uff0c\u4e5f\u8ba9gRPC\u9009\u62e9\u4e86\u76f4\u63a5\u57fa\u4e8eHTTP2 \u534f\u8bae\u6784\u5efa\uff0c\u800c\u4e5f\u662f\u8fd9\u79cd\u9009\u62e9\uff0c\u8ba9gRPC \u6210\u4e3a\u4e86RPC \u767e\u5bb6\u4e89\u9e23\u540e\u662f\u9690\u5f62\u4e8b\u5b9e\u534f\u8bae\u3002\u4f46\u6211\u4eec\u4e5f\u770b\u5230\u4e86\u534f\u8bae\u7684\u8fdb\u6b65\u610f\u5473\u7740\u66f4\u5c11\u7684\u6570\u636e\u4ea4\u4e92\uff0c\u4e5f\u8ba9\u6570\u636e\u53ef\u89c2\u5bdf\u53d8\u5f97\u66f4\u52a0\u56f0\u96be\uff0c\u6bd4\u5982HTTP2 \u4f7f\u7528eBPF\u76ee\u524d\u5c1a\u65e0\u5b8c\u7f8e\u7684\u89e3\u51b3\u65b9\u6cd5\uff0c\u6216\u4f7f\u7528Kprobe \u89c2\u5bdf\uff0c\u9009\u62e9\u7684\u591a\u8bed\u8a00\u6027\u3001\u6d41\u91cf\u62d3\u6251\u5206\u6790\u3001\u4f46\u5bb9\u8bb8\u4e86\u5931\u53bb\u6d41\u91cf\u7ec6\u8282\u7684\u98ce\u9669\uff1b\u6216\u4f7f\u7528Uprobe \u89c2\u5bdf\uff0c\u9009\u62e9\u4e86\u6570\u636e\u7684\u7ec6\u8282\uff0c\u62d3\u6251\uff0c\u4f46\u5bb9\u8bb8\u4e86\u591a\u8bed\u8a00\u7684\u517c\u5bb9\u6027\u95ee\u9898\u3002iLogtail\u81f4\u529b\u4e8e\u6253\u9020\u8986\u76d6Trace\u3001Metrics \u4ee5\u53caLogging \u7684\u53ef\u89c2\u6d4b\u6027\u7684\u7edf\u4e00Agent\uff0c\u800ceBPF \u4f5c\u4e3a\u76ee\u524d\u53ef\u89c2\u6d4b\u9886\u57df\u7684\u70ed\u95e8\u91c7\u96c6\u6280\u672f\uff0c\u63d0\u4f9b\u4e86\u65e0\u4fb5\u5165\u3001\u5b89\u5168\u3001\u9ad8\u6548\u89c2\u6d4b\u6d41\u91cf\u7684\u80fd\u529b\uff0c\u9884\u8ba18\u6708\u4efd\uff0c\u6211\u4eec\u5c06\u5728iLogtail Cpp\u6b63\u5f0f\u5f00\u6e90\u540e\u53d1\u5e03\u6b64\u90e8\u5206\u529f\u80fd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u548c\u4e92\u76f8\u4ea4\u6d41\u3002\u53c2\u8003\uff1aTCP \u7684\u51e0\u4e2a\u72b6\u6001:<a href=\"https:\/\/link.segmentfault.com\/?enc=uQFBwKvXAnwi3r7OM4SYpw%3D%3D.9aaRQrI32kSMVbU03plFfQMIIr15bx%2FJUG8Db87fKM6SlnoeJ52bb1W6rLAH4zdVmSe8QVE4%2BlC6cCWI4%2FDgVA%3D%3D\" rel=\"nofollow\">https:\/\/www.s0nnet.com\/archiv&#8230;<\/a>\u7684\u603b\u7ed3:<a href=\"https:\/\/link.segmentfault.com\/?enc=SzzfIlvuQPEpE%2BTPRtxQrQ%3D%3D.AZYRoQFHHlRf%2FWc%2FssCGBnTieRbX78PcW2%2FYNsjkdSItKYrBedY%2FfXyhuC77hH%2B6qYB4TgXz15ygCfDDRKQyRg%3D%3D\" rel=\"nofollow\">https:\/\/liyaoli.com\/2015-04-1&#8230;<\/a> Control Protocol:<a href=\"https:\/\/link.segmentfault.com\/?enc=NPMmhTT1ArHgMKfI6QePkQ%3D%3D.M1zMbZclJwIFPqpsd35UvWZc%2FU4wV0rw3KzItfIjkAW9wbQFtZSycELKOgrAsL9634yQSwgbKhdiv%2FkuwBlhxMWJBDRQxqPZDCk%2B6ItmF6c%3D\" rel=\"nofollow\">https:\/\/en.wikipedia.org\/wiki&#8230;<\/a> Networks:<a href=\"https:\/\/link.segmentfault.com\/?enc=K1etuqvRGdl10iFBG0HXlQ%3D%3D.qqajKdEK6qkg2PS5vcS%2Fiv0fzbyGeEsdgbzDnTcIFSPKJudwJ3z9UxMfXcf7frHBhIFvn5JZlBc25yo1%2FyiUbsYYoJl5fm7LvXm%2BCecaBgGUyFzIeTNUxoBtZRqnMHc3uPqwQ0Rm%2FN54H0wk%2BD12wCeiCW%2FCHfVGjZ9jiVtDzSpDsmA%2BhySgPrO3ZD8xD%2BPGUWalwMtMBpKVD6Ci8gu1lw%3D%3D\" rel=\"nofollow\">https:\/\/www.cse.iitk.ac.in\/us&#8230;<\/a> A Deep Dive into the Communication Pattern:<a href=\"https:\/\/link.segmentfault.com\/?enc=S2j5QJMVYa3%2BwdBTIOOE7Q%3D%3D.zmOJ%2FCB3X4aT%2BXk9rtx1MhxvzORpkw4ismhWj%2BZLtnXM972%2BNANe791ac2tXiln%2F0jul97bxZpUw8BZb4dSKTwtEAzlqBGiN938lXH7Lok78MAvhksBrsLhfnVIyeoZt0nauZ3HzBKTgMyb5aT97GMx7EDU8o8agr2ml%2Fs4FnnH%2FDPkMjb8FKjJ%2By0AezTX7\" rel=\"nofollow\">https:\/\/thenewstack.io\/grpc-a&#8230;<\/a>\u6df1\u5165\u7406\u89e3Linux socket:<a href=\"https:\/\/link.segmentfault.com\/?enc=sqpxuZdNr55woR0ozffpNg%3D%3D.bd8gU4XwU0NuWUcRhwB83uBOgRfkY3ElRPX4i7aP2cQ%3D\" rel=\"nofollow\">https:\/\/www.modb.pro\/db\/153725<\/a>\u57fa\u4e8eeBPF\u7684\u5e94\u7528\u53ef\u89c2\u6d4b\u6280\u672f\u5b9e\u8df5:<a href=\"https:\/\/www.bilibili.com\/video\/BV1Gg411d7tq\">https:\/\/www.bilibili.com\/vide&#8230;<\/a>\u00a0\u91cd\u78c5\u6765\u88ad\uff012022\u4e0a\u534a\u5e74\u963f\u91cc\u4e91\u793e\u533a\u6700\u70ed\u7535\u5b50\u4e66\u699c\u5355\uff01\u00a0\u5343\u4e07\u9605\u8bfb\u91cf\u3001\u767e\u4e07\u4e0b\u8f7d\u91cf\u3001\u4e0a\u767e\u672c\u7535\u5b50\u4e66\uff0c\u8fd1200\u4f4d\u963f\u91cc\u4e13\u5bb6\u53c2\u4e0e\u7f16\u5199\u3002\u591a\u5143\u5316\u9009\u62e9\u3001\u5168\u9886\u57df\u8986\u76d6\uff0c\u6c47\u805a\u963f\u91cc\u5df4\u5df4\u6280\u672f\u5b9e\u8df5\u7cbe\u534e\uff0c\u8bfb\u3001\u5b66\u3001\u7ec3\u4e00\u952e\u4e09\u8fde\u3002\u5f00\u53d1\u8005\u85cf\u7ecf\u9601\uff0c\u5f00\u53d1\u8005\u7684\u5de5\u4f5c\u4f34\u4fa3~\u70b9\u51fb\u8fd9\u91cc\uff0c\u67e5\u770b\u8be6\u60c5\u3002\u539f\u6587\u94fe\u63a5\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=yAl9JJPPcZbJz01r94bp1A%3D%3D.mfoMUPDFrtijHjycTzwvG0Q71RR4rza5X8OJjIIHxbddMmi3qGt2I%2Fd%2FaLlSWD42\" rel=\"nofollow\">https:\/\/click.aliyun.com\/m\/10&#8230;<\/a>\u672c\u6587\u4e3a\u963f\u91cc\u4e91\u539f\u521b\u5185\u5bb9\uff0c\u672a\u7ecf\u5141\u8bb8\u4e0d\u5f97\u8f6c\u8f7d\u3002<\/p>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000042291589\">https:\/\/segmentfault.com\/a\/1190000042291589<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u4ecb\uff1a\u00a0\u968f\u7740eBPF\u63a8\u51fa\uff0c\u7531\u4e8e\u5177\u6709\u9ad8\u6027\u80fd\u3001\u9ad8\u6269\u5c55\u3001\u5b89\u5168\u6027\u7b49\u4f18\u52bf\uff0c\u76ee\u524d\u5df2\u7ecf\u5728\u7f51\u7edc\u3001\u5b89\u5168\u3001\u53ef\u89c2\u5bdf\u7b49\u9886\u57df\u5e7f\u6cdb\u5e94\u7528\uff0c\u540c [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[],"tags":[],"class_list":["post-10006154","post","type-post","status-publish","format-standard","hentry"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006154","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10006154"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006154\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10006154"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10006154"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10006154"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}