{"id":207855,"date":"2025-07-08T08:05:01","date_gmt":"2025-07-08T00:05:01","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207855\/"},"modified":"2025-07-08T08:05:01","modified_gmt":"2025-07-08T00:05:01","slug":"bufio-%e6%89%ab%e6%8f%8f%e4%bb%aa%e5%92%8c%e5%a4%84%e7%90%86%e6%96%b0%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207855\/","title":{"rendered":"bufio \u626b\u63cf\u4eea\u548c\u5904\u7406\u65b0\u884c"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> bufio \u626b\u63cf\u4eea\u548c\u5904\u7406\u65b0\u884c<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-26 09:27:37<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4eca\u65e5\u4e0d\u80af\u57cb\u5934\uff0c\u660e\u65e5\u4f55\u4ee5\u62ac\u5934\uff01\u6bcf\u65e5\u4e00\u53e5\u52aa\u529b\u81ea\u5df1\u7684\u8bdd\u54c8\u54c8~\u54c8\u55bd\uff0c\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\u300abufio \u626b\u63cf\u4eea\u548c\u5904\u7406\u65b0\u884c\u300b<\/span>\uff0c\u4e3b\u8981\u5185\u5bb9\u662f\u8bb2\u89e3<\/span>\u7b49\u7b49\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u53ef\u4ee5\u6536\u85cf\u6216\u8005\u6709\u66f4\u597d\u7684\u5efa\u8bae\u5728\u8bc4\u8bba\u63d0\u51fa\uff0c\u6211\u90fd\u4f1a\u8ba4\u771f\u770b\u7684\uff01\u5927\u5bb6\u4e00\u8d77\u8fdb\u6b65\uff0c\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u6211\u6709 2 \u4e2a\u8fdb\u7a0b\u901a\u8fc7 tcp \u5957\u63a5\u5b57\u8fdb\u884c\u901a\u4fe1\u3002 a \u65b9\u5411 b \u65b9\u53d1\u9001\u5b57\u7b26\u4e32\uff0c\u6709\u65f6\u4f7f\u7528\u6807\u51c6\u52a0\u5bc6\/\u5bc6\u7801\u5305\u5bf9\u5176\u8fdb\u884c\u52a0\u5bc6\u3002\u751f\u6210\u7684\u5b57\u7b26\u4e32\u53ef\u80fd\u5305\u542b\u6362\u884c\u7b26\uff0c\u4f46 b \u65b9\u7684 bufio \u626b\u63cf\u5668\u5c06\u5176\u89e3\u91ca\u4e3a\u8bf7\u6c42\u7684\u7ed3\u675f\u3002\u6211\u5e0c\u671b b \u65b9\u7ee7\u7eed\u63a5\u53d7\u884c\u3001\u8ffd\u52a0\u5b83\u4eec\u5e76\u7b49\u5f85\u5df2\u77e5\u7684\u547d\u4ee4\u7ed3\u675f\u5b57\u7b26\uff0c\u7136\u540e\u518d\u8fdb\u4e00\u6b65\u5904\u7406\u5b83\u3002 b \u7aef\u5c06\u5411 a \u7aef\u8fd4\u56de\u54cd\u5e94\uff0c\u56e0\u6b64\u8fde\u63a5\u4fdd\u6301\u6253\u5f00\u72b6\u6001\uff0c\u56e0\u6b64\u4e0d\u80fd\u4f7f\u7528\u5173\u95ed\u8fde\u63a5\u4e8b\u4ef6\u4f5c\u4e3a\u547d\u4ee4\u5206\u9694\u7b26\u3002<\/p>\n

\u5355\u884c\u547d\u4ee4\u4e00\u5207\u6b63\u5e38\uff0c\u4f46\u52a0\u5bc6\u8f93\u51fa\u4e2d\u7684\u8fd9\u4e9b\u65b0\u884c\u5b57\u7b26\u4f1a\u5bfc\u81f4\u95ee\u9898\uff08\u5927\u7ea6 10% \u7684\u65f6\u95f4\uff09\u3002<\/p>\n

a \u65b9\u5c06\u4ee5\u4ee5\u4e0b\u683c\u5f0f\u53d1\u9001\uff08\u7b2c\u4e09\u4e2a\u662f\u6211\u5c1d\u8bd5\u6b63\u786e\u5904\u7406\u7684\u95ee\u9898\u5b57\u7b26\u4e32\u7684\u5408\u6cd5\u793a\u4f8b\uff09\uff1a<\/p>\n

callcommand()<\/p>\n

callcommand(“\u4e00”,”\u4e8c”,”\u4e09”)<\/p>\n

callcommand(“string”,”\u8981\u5173\u6ce8\u7684\u52a0\u5bc6\u6570\u636e”,”[7b\ufffd\ufffdcr\ufffd\ufffdl\ufffd\ufffdg\ufffd\ufffd\ufffdbh\ufffd@x\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd\ufffd \ufffd(z \ufffd$\ufffd0\ufffd\u5e265y7+\ufffdu\ufffdqt\ufffd\u0390l\ufffdk\ufffd(\ufffdn\ufffdu\ufffd\ufffdj\ufffd\ufffd\ufffdqk\ufffdbx\ufffd+\ufffdl\\8h\ufffd\ufffd-g\ufffdy.\ufffd. \ufffd1\ufffdf\ufffdi\ufffdc\ufffd\u015f\u3cff\ufffd\ufffdo\ufffdxz\ufffd8?\ufffd\ufffdc\ufffde \ufffdtb\ufffd?4\ufffdhd w\ufffd\ufffd\ufffd \ufffd<\ufffd\ufffd\u0415\ufffdgc\ufffd\ufffd\ufffd\ufffdn\ufffdv\ufffd\ufffd\ufffd\ufffdp8\ufffd\ufffd\ufffd\ufffdo3″)<\/p>\n

\u6211\u4eec\u53ef\u4ee5\u76f8\u5f53\u53ef\u9760\u5730\u8bf4\u547d\u4ee4\u7ed3\u675f\u952e\u662f\u4e00\u4e2a\u53f3\u62ec\u53f7\u201c)\u201d\u548c\u4e00\u4e2a\u6362\u884c\u7b26\u3002<\/p>\n

a\u65b9\u53d1\u9001\u7ed9b\u65b9\u7684\u529f\u80fd\uff1a<\/p>\n

func writer(text string) string {\n    conn, err := net.dial(\"tcp\", tcpdest)\n    t := time.now()\n    if err != nil {\n        if _, t := err.(*net.operror); t {\n            fmt.println(\"some problem connecting.\\r\\n\")\n        } else {\n            fmt.println(\"unknown error: \" + err.error()+\"\\r\\n\")\n        }\n    } else {\n        conn.setwritedeadline(time.now().add(1 * time.second))\n        _, err = conn.write([]byte(text+\"\\r\\n\"))\n        if err != nil {\n            fmt.println(\"error writing to stream.\\r\\n\")\n        } else {\n            timenow := time.now()           \n            if timenow.sub(t.add(time.duration(5*time.second))).seconds() > 5 {\n                return \"timeout\"\n            }\n            scanner := bufio.newscanner(conn)\n            for {\n                ok := scanner.scan()\n                if !ok {\n                    break\n                }\n                if strings.hasprefix(scanner.text(), \"callcommand(\") && strings.hassuffix(scanner.text(), \")\") {\n                    conn.close()\n                    return scanner.text()\n                }\n            }\n        }\n    }\n    return \"unspecified error\"\n}<\/pre>\n
b\u65b9\u5bf9\u4f20\u5165\u8fde\u63a5\u7684\u5904\u7406\uff1a<\/p>\n
src := \"192.168.68.100:9000\"\nlistener, _ := net.Listen(\"tcp\", src)\n\ndefer listener.Close()\n\nfor {\n    conn, err := listener.Accept()\n    if err != nil {\n        fmt.Println(\"Some connection error: %s\\r\\n\", err)\n    }\n    go handleConnection(conn)\n}   \n\nfunc handleConnection(conn net.Conn) {\n    remoteAddr := conn.RemoteAddr().String()\n    fmt.Println(\"Client connected from \" + remoteAddr + \"\\r\\n\")\n\n    scanner := bufio.NewScanner(conn)\n    wholeString := \"\"\n    for {\n        ok := scanner.Scan()\n\n        if !ok {\n            break\n        }\n\n        \/\/Trying to find the index of a new-line character, to help me understand how it's being processed\n        fmt.Println(strings.Index(scanner.Text(), \"\\n\"))\n        fmt.Println(strings.Index(wholeString, \"\\n\"))\n\n        \/\/for the first line received, add it to wholeString\n        if len(wholeString) == 0 {\n            wholeString = scanner.Text()\n        }\n\n        re := regexp.MustCompile(`[a-zA-Z]+\\(.*\\)\\r?\\n?`)\n\n        if re.Match([]byte(wholeString)) {\n            fmt.Println(\"Matched command format\")\n            handleRequest(wholeString, conn)\n        } else if len(wholeString) > 0 && !re.Match([]byte(wholeString)) {\n            \/\/Since we didn't match regex, we can assume there's a new-line mid string, so append to wholeString\n            wholeString += \"\\n\"+scanner.Text()\n        }\n\n    }\n    conn.Close()\n    fmt.Println(\"Client at \" + remoteAddr + \" disconnected.\\r\\n\")\n}\n\nfunc handleRequest(request string, conn net.Conn) {\n    fmt.Println(\"Received: \"+request)\n}<\/pre>\n
\u6211\u4e0d\u592a\u786e\u5b9a b \u4fa7\u7684\u8fd9\u79cd\u65b9\u6cd5\u662f\u5426\u6b63\u786e\uff0c\u4f46\u5728\u4e0a\u9762\u5305\u542b\u4e86\u6211\u7684\u4ee3\u7801\u3002\u6211\u89c1\u8fc7\u4e00\u4e9b\u5b9e\u73b0\uff0c\u4f46\u5f88\u591a\u4f3c\u4e4e\u4f9d\u8d56\u4e8e\u5173\u95ed\u8fde\u63a5\u6765\u5f00\u59cb\u5904\u7406\u8bf7\u6c42\uff0c\u8fd9\u4e0d\u9002\u5408\u6211\u7684\u573a\u666f\u3002<\/p>\n
\u611f\u8c22\u4efb\u4f55\u6307\u70b9\uff0c\u8c22\u8c22\u3002<\/p>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u60a8\u7684\u901a\u4fe1\u201c\u534f\u8bae\u201d\uff08\u4e00\u884c\u662f\u4e00\u6761\u6d88\u606f\uff0c\u4e0d\u5b8c\u5168\u662f\u534f\u8bae\uff09\u663e\u7136\u65e0\u6cd5\u5904\u7406\u4e8c\u8fdb\u5236\u6570\u636e\u3002\u5982\u679c\u60a8\u60f3\u5728\u534f\u8bae\u4e2d\u53d1\u9001\u6587\u672c\u6570\u636e\uff0c\u60a8\u53ef\u4ee5\u5c06\u4e8c\u8fdb\u5236\u6570\u636e\u8f6c\u6362\u4e3a\u6587\u672c\uff0c\u4f8b\u5982\u4f7f\u7528 base64 \u7f16\u7801\u3002\u60a8\u8fd8\u9700\u8981\u4e00\u4e9b\u8bed\u4e49\u6765\u6307\u793a\u67d0\u4e9b\u6587\u672c\u662f\u4ece\u4e8c\u8fdb\u5236\u8f6c\u6362\u800c\u6765\u7684\u3002<\/p>\n
\u6216\u8005\u60a8\u53ef\u4ee5\u66f4\u6539\u534f\u8bae\u4ee5\u672c\u5730\u5904\u7406\u4e8c\u8fdb\u5236\u6570\u636e\u3002\u60a8\u53ef\u4ee5\u5728\u540e\u9762\u6dfb\u52a0\u4e8c\u8fdb\u5236\u6570\u636e\u7684\u957f\u5ea6\uff0c\u8fd9\u6837\u60a8\u5c31\u77e5\u9053\u5fc5\u987b\u5c06\u6b64\u6570\u636e\u8bfb\u53d6\u4e3a\u4e8c\u8fdb\u5236\u6570\u636e\uff0c\u800c\u4e0d\u662f\u5c06\u6362\u884c\u7b26\u89e3\u91ca\u4e3a\u6d88\u606f\u7684\u7ed3\u5c3e\u3002<\/p>\n
\u6709\u8bb8\u591a\u534f\u8bae\u5728\u8fd9\u65b9\u9762\u505a\u5f97\u5f88\u597d\uff0c\u4e5f\u8bb8\u60a8\u4e0d\u9700\u8981\u60f3\u51fa\u60a8\u7684\u81ea\u5b9a\u4e49\u534f\u8bae\u3002\u5982\u679c\u4f60\u60f3\u53d1\u9001\u77ed\u4fe1\uff0chttp \u4f7f\u7528\u8d77\u6765\u975e\u5e38\u7b80\u5355\uff0c\u4f60\u53ef\u4ee5\u5c06\u6570\u636e\u683c\u5f0f\u5316\u4e3a json\uff0c\u4f7f\u7528 base64 \u5c06\u4e8c\u8fdb\u5236\u6570\u636e\u8f6c\u6362\u4e3a\u6587\u672c\uff1a<\/p>\n
{\n    \"command\": \"string\",\n    \"args\": [\n        \"binaryDataAsBase64\"\n    ]\n}\n<\/pre>\n
\u4eca\u5929\u5173\u4e8e\u300abufio \u626b\u63cf\u4eea\u548c\u5904\u7406\u65b0\u884c\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-207855","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207855","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=207855"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207855\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207855"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207855"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207855"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}