{"id":16823,"date":"2024-03-15T13:45:58","date_gmt":"2024-03-15T13:45:58","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-can-the-continuous-connection-be-maintained-when-implementing-hot-updates-in-go\/"},"modified":"2025-08-07T06:11:18","modified_gmt":"2025-08-07T06:11:18","slug":"how-can-the-continuous-connection-be-maintained-when-implementing-hot-updates-in-go","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-can-the-continuous-connection-be-maintained-when-implementing-hot-updates-in-go\/","title":{"rendered":"How can the continuous connection be maintained when im&#8230;"},"content":{"rendered":"<p>The steps to implement hot updating to maintain connections in Go language are as follows:<\/p>\n<ol>\n<li>operating system signals<\/li>\n<li>SIGINT is an abbreviation for Signal Interrupt.<\/li>\n<li>Terminate Signal<\/li>\n<li>establish a network connection<\/li>\n<li>Accept network connections.<\/li>\n<li>a reader that buffers input<\/li>\n<li>Please read the string.<\/li>\n<li>Execute a command on the operating system.<\/li>\n<li>After rebooting, you can re-listen on the address and port, and accept new connections.<\/li>\n<\/ol>\n<p>Here is a simple example code:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">package<\/span> main\r\n\r\n<span class=\"hljs-keyword\">import<\/span> (\r\n    <span class=\"hljs-string\">\"bufio\"<\/span>\r\n    <span class=\"hljs-string\">\"fmt\"<\/span>\r\n    <span class=\"hljs-string\">\"net\"<\/span>\r\n    <span class=\"hljs-string\">\"os\"<\/span>\r\n    <span class=\"hljs-string\">\"os\/exec\"<\/span>\r\n    <span class=\"hljs-string\">\"os\/signal\"<\/span>\r\n    <span class=\"hljs-string\">\"syscall\"<\/span>\r\n)\r\n\r\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span> <span class=\"hljs-title\">handleConnection<\/span><span class=\"hljs-params\">(conn net.Conn)<\/span><\/span> {\r\n    <span class=\"hljs-keyword\">defer<\/span> conn.Close()\r\n\r\n    reader := bufio.NewReader(conn)\r\n    <span class=\"hljs-keyword\">for<\/span> {\r\n        line, err := reader.ReadString(<span class=\"hljs-string\">'\\n'<\/span>)\r\n        <span class=\"hljs-keyword\">if<\/span> err != <span class=\"hljs-literal\">nil<\/span> {\r\n            fmt.Println(<span class=\"hljs-string\">\"Error reading from connection:\"<\/span>, err)\r\n            <span class=\"hljs-keyword\">return<\/span>\r\n        }\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u5904\u7406\u8bfb\u53d6\u5230\u7684\u6570\u636e<\/span>\r\n        fmt.Println(<span class=\"hljs-string\">\"Received:\"<\/span>, line)\r\n    }\r\n}\r\n\r\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span> <span class=\"hljs-title\">main<\/span><span class=\"hljs-params\">()<\/span><\/span> {\r\n    <span class=\"hljs-comment\">\/\/ \u6355\u83b7SIGINT\u548cSIGTERM\u4fe1\u53f7<\/span>\r\n    sigChan := <span class=\"hljs-built_in\">make<\/span>(<span class=\"hljs-keyword\">chan<\/span> os.Signal, <span class=\"hljs-number\">1<\/span>)\r\n    signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM)\r\n    <span class=\"hljs-keyword\">go<\/span> <span class=\"hljs-function\"><span class=\"hljs-keyword\">func<\/span><span class=\"hljs-params\">()<\/span><\/span> {\r\n        &lt;-sigChan\r\n        <span class=\"hljs-comment\">\/\/ \u63a5\u6536\u5230\u4fe1\u53f7\u65f6\u6267\u884c\u4e00\u4e9b\u6e05\u7406\u64cd\u4f5c<\/span>\r\n        fmt.Println(<span class=\"hljs-string\">\"Received signal, shutting down...\"<\/span>)\r\n        <span class=\"hljs-comment\">\/\/ \u5173\u95ed\u4e4b\u524d\u7684\u8fde\u63a5<\/span>\r\n        <span class=\"hljs-comment\">\/\/ \u6267\u884c\u4e00\u4e9b\u6e05\u7406\u64cd\u4f5c<\/span>\r\n        <span class=\"hljs-comment\">\/\/ \u91cd\u542f\u7a0b\u5e8f<\/span>\r\n        cmd := exec.Command(os.Args[<span class=\"hljs-number\">0<\/span>])\r\n        cmd.Stdout = os.Stdout\r\n        cmd.Stderr = os.Stderr\r\n        err := cmd.Start()\r\n        <span class=\"hljs-keyword\">if<\/span> err != <span class=\"hljs-literal\">nil<\/span> {\r\n            fmt.Println(<span class=\"hljs-string\">\"Error restarting program:\"<\/span>, err)\r\n        }\r\n        os.Exit(<span class=\"hljs-number\">0<\/span>)\r\n    }()\r\n\r\n    <span class=\"hljs-comment\">\/\/ \u76d1\u542c\u6307\u5b9a\u7684\u5730\u5740\u548c\u7aef\u53e3<\/span>\r\n    listener, err := net.Listen(<span class=\"hljs-string\">\"tcp\"<\/span>, <span class=\"hljs-string\">\"localhost:8080\"<\/span>)\r\n    <span class=\"hljs-keyword\">if<\/span> err != <span class=\"hljs-literal\">nil<\/span> {\r\n        fmt.Println(<span class=\"hljs-string\">\"Error listening:\"<\/span>, err)\r\n        os.Exit(<span class=\"hljs-number\">1<\/span>)\r\n    }\r\n    <span class=\"hljs-keyword\">defer<\/span> listener.Close()\r\n\r\n    fmt.Println(<span class=\"hljs-string\">\"Listening on localhost:8080\"<\/span>)\r\n\r\n    <span class=\"hljs-keyword\">for<\/span> {\r\n        <span class=\"hljs-comment\">\/\/ \u63a5\u6536\u65b0\u7684\u8fde\u63a5<\/span>\r\n        conn, err := listener.Accept()\r\n        <span class=\"hljs-keyword\">if<\/span> err != <span class=\"hljs-literal\">nil<\/span> {\r\n            fmt.Println(<span class=\"hljs-string\">\"Error accepting connection:\"<\/span>, err)\r\n            <span class=\"hljs-keyword\">continue<\/span>\r\n        }\r\n        <span class=\"hljs-comment\">\/\/ \u5904\u7406\u8fde\u63a5<\/span>\r\n        <span class=\"hljs-keyword\">go<\/span> handleConnection(conn)\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>This sample code can listen for TCP connections on localhost:8080 and print the incoming data upon connection. It will perform some cleanup operations and restart the program when receiving a SIGINT or SIGTERM signal.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The steps to implement hot updating to maintain connections in Go language are as follows: operating system signals SIGINT is an abbreviation for Signal Interrupt. Terminate Signal establish a network connection Accept network connections. a reader that buffers input Please read the string. Execute a command on the operating system. After rebooting, you can re-listen [&hellip;]<\/p>\n","protected":false},"author":13,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[453,1402,299,1404,1403],"class_list":["post-16823","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-development","tag-guide","tag-programming","tag-technology","tag-tutorial"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How can the continuous connection be maintained when im... - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn about how can the continuous connection be maintained when implementing hot updates in go?. Comprehensive guide with examples and best practices.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/how-can-the-continuous-connection-be-maintained-when-implementing-hot-updates-in-go\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How can the continuous connection be maintained when im...\" \/>\n<meta property=\"og:description\" content=\"Learn about how can the continuous connection be maintained when implementing hot updates in go?. 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