{"id":206579,"date":"2025-06-12T13:53:57","date_gmt":"2025-06-12T05:53:57","guid":{"rendered":"https:\/\/server.hk\/cnblog\/206579\/"},"modified":"2025-06-12T13:53:57","modified_gmt":"2025-06-12T05:53:57","slug":"golang-%e5%8d%8f%e7%a8%8b-tcp-%e6%89%ab%e6%8f%8f%e6%8f%90%e5%89%8d%e9%80%80%e5%87%ba%ef%bc%9a%e5%a6%82%e4%bd%95%e7%a1%ae%e4%bf%9d%e6%89%80%e6%9c%89%e5%8d%8f%e7%a8%8b%e5%ae%8c%e6%88%90%e4%bb%bb","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/206579\/","title":{"rendered":"Golang \u534f\u7a0b TCP \u626b\u63cf\u63d0\u524d\u9000\u51fa\uff1a\u5982\u4f55\u786e\u4fdd\u6240\u6709\u534f\u7a0b\u5b8c\u6210\u4efb\u52a1\uff1f"},"content":{"rendered":"<p>\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u52aa\u529b\u5b66\u4e60\u5427\uff01\u672c\u6587<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aGOLANG \u534f\u7a0b TCP \u626b\u63cf\u63d0\u524d\u9000\u51fa\uff1a\u5982\u4f55\u786e\u4fdd\u6240\u6709\u534f\u7a0b\u5b8c\u6210\u4efb\u52a1\uff1f \u300b<\/span>\u4e3b\u8981\u8bb2\u89e3\u4e86<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6211\u4f1a\u5728GOLANG\u4e2d\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u7684\u7cfb\u5217\u6587\u7ae0\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u5e76\u79ef\u6781\u7559\u8a00\u5efa\u8bae\u3002\u4e0b\u9762\u5c31\u5148\u4e00\u8d77\u6765\u770b\u4e00\u4e0b\u672c\u7bc7\u6b63\u6587\u5185\u5bb9\u5427\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01,<br \/>\n<img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241116\/17317182996737ec9b9f98e.jpg\" class=\"aligncenter\">,<br \/>\n<strong>golang \u534f\u7a0btcp\u626b\u63cf\u63d0\u524d\u9000\u51fa\u8be6\u89e3<\/strong>,\u5728\u8fdb\u884ctcp\u626b\u63cf\u65f6\uff0c\u6211\u4eec\u671f\u671b\u534f\u7a0b\u5728\u5904\u7406\u5b8c\u4efb\u52a1\u540e\u624d\u9000\u51fa\uff0c\u7136\u800c\u6709\u65f6\u5019\u5374\u51fa\u73b0\u534f\u7a0b\u63d0\u524d\u9000\u51fa\u5bfc\u81f4\u4efb\u52a1\u672a\u5b8c\u6210\u7684\u60c5\u51b5\u3002\u672c\u6587\u5bf9\u8fd9\u4e00\u95ee\u9898\u8fdb\u884c\u6df1\u5165\u5206\u6790\uff0c\u7ed9\u51fa\u89e3\u51b3\u65b9\u6848\u3002,<br \/>\n<strong>\u95ee\u9898\u63cf\u8ff0<\/strong>,\u76ee\u6807\u662f\u901a\u8fc7\u534f\u7a0b\u626b\u63cf\u76ee\u6807\u4e3b\u673a\u8303\u56f4\u5185\u7684\u5f00\u653e\u7aef\u53e3\uff0c\u4f8b\u5982\u626b\u63cf149.129.68.235\u76841-1024\u7aef\u53e3\u3002\u4f46\u4ee3\u7801\u8fd0\u884c\u540e\u5374\u53d1\u73b0\u534f\u7a0b\u5728\u5c06\u7ed3\u679c\u5199\u5165\u901a\u9053\u4e4b\u524d\u5c31\u79bb\u5f00\u4e86\u3002,<br \/>\n<strong>\u89e3\u51b3\u65b9\u6848<\/strong>,\u95ee\u9898\u5728\u4e8e\u4e3b\u534f\u7a0b\u5728\u534f\u7a0b\u5904\u7406\u5b8c\u4efb\u52a1\u4e4b\u524d\u5c31\u5173\u95ed\u4e86\u7ba1\u9053\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528sync.waitgroup\u6765\u4fdd\u8bc1\u5728\u6240\u6709\u534f\u7a0b\u5b8c\u6210\u4efb\u52a1\u4e4b\u524d\uff0c\u4e3b\u534f\u7a0b\u4e0d\u4f1a\u5173\u95ed\u7ba1\u9053\u3002,<br \/>\n<strong>\u4fee\u6539\u540e\u7684\u4ee3\u7801<\/strong>,\u5728\u4fee\u6539\u540e\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528sync.waitgroup\u6765\u8ddf\u8e2a\u6b63\u5728\u5de5\u4f5c\u7684\u534f\u7a0b\u6570\u91cf\u3002\u5f53\u6240\u6709\u534f\u7a0b\u6267\u884c\u5b8c\u6bd5\uff08wg.done()\uff09\uff0c\u4e14\u5df2\u7ecf\u5904\u7406\u5b8c\u4efb\u52a1\u7ba1\u9053\u4e2d\u7684\u6240\u6709\u7ed3\u679c\u540e\uff0c\u4e3b\u534f\u7a0b\u624d\u4f1a\u5173\u95ed\u7ba1\u9053\u3002\u8fd9\u6837\u5c31\u53ef\u4ee5\u786e\u4fdd\u534f\u7a0b\u4e0d\u4f1a\u63d0\u524d\u9000\u51fa\u3002,\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8eGOLANG\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~,golang \u534f\u7a0btcp\u626b\u63cf\u63d0\u524d\u9000\u51fa\u8be6\u89e3,\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u52aa\u529b\u5b66\u4e60\u5427\uff01\u672c\u6587<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aGOLANG \u534f\u7a0b TCP \u626b\u63cf\u63d0\u524d\u9000\u51fa\uff1a\u5982\u4f55\u786e\u4fdd\u6240\u6709\u534f\u7a0b\u5b8c\u6210\u4efb\u52a1\uff1f \u300b<\/span>\u4e3b\u8981\u8bb2\u89e3\u4e86<br \/>\n<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6211\u4f1a\u5728GOLANG\u4e2d\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u7684\u7cfb\u5217\u6587\u7ae0\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u5e76\u79ef\u6781\u7559\u8a00\u5efa\u8bae\u3002\u4e0b\u9762\u5c31\u5148\u4e00\u8d77\u6765\u770b\u4e00\u4e0b\u672c\u7bc7\u6b63\u6587\u5185\u5bb9\u5427\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01,<br \/>\n<b><\/b> <\/p>\n<p>\u5f53\u524d\u4f4d\u7f6e\uff1a <span>&gt;<\/span>  <span>&gt;<\/span>  <span>&gt;<\/span>  <span>&gt;<\/span> <span>GOLANG \u534f\u7a0b TCP \u626b\u63cf\u63d0\u524d\u9000\u51fa\uff1a\u5982\u4f55\u786e\u4fdd\u6240\u6709\u534f\u7a0b\u5b8c\u6210\u4efb\u52a1\uff1f <\/span><\/p>\n<h1>GOLANG \u534f\u7a0b TCP \u626b\u63cf\u63d0\u524d\u9000\u51fa\uff1a\u5982\u4f55\u786e\u4fdd\u6240\u6709\u534f\u7a0b\u5b8c\u6210\u4efb\u52a1\uff1f <\/h1>\n<p><span>2024-11-16 08:51:55<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u52aa\u529b\u5b66\u4e60\u5427\uff01\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aGOLANG \u534f\u7a0b TCP \u626b\u63cf\u63d0\u524d\u9000\u51fa\uff1a\u5982\u4f55\u786e\u4fdd\u6240\u6709\u534f\u7a0b\u5b8c\u6210\u4efb\u52a1\uff1f \u300b<\/span>\u4e3b\u8981\u8bb2\u89e3\u4e86<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6211\u4f1a\u5728GOLANG\u4e2d\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u7684\u7cfb\u5217\u6587\u7ae0\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u5e76\u79ef\u6781\u7559\u8a00\u5efa\u8bae\u3002\u4e0b\u9762\u5c31\u5148\u4e00\u8d77\u6765\u770b\u4e00\u4e0b\u672c\u7bc7\u6b63\u6587\u5185\u5bb9\u5427\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241116\/17317182996737ec9b9f98e.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>golang \u534f\u7a0btcp\u626b\u63cf\u63d0\u524d\u9000\u51fa\u8be6\u89e3<\/strong><\/p>\n<p>\u5728\u8fdb\u884ctcp\u626b\u63cf\u65f6\uff0c\u6211\u4eec\u671f\u671b\u534f\u7a0b\u5728\u5904\u7406\u5b8c\u4efb\u52a1\u540e\u624d\u9000\u51fa\uff0c\u7136\u800c\u6709\u65f6\u5019\u5374\u51fa\u73b0\u534f\u7a0b\u63d0\u524d\u9000\u51fa\u5bfc\u81f4\u4efb\u52a1\u672a\u5b8c\u6210\u7684\u60c5\u51b5\u3002\u672c\u6587\u5bf9\u8fd9\u4e00\u95ee\u9898\u8fdb\u884c\u6df1\u5165\u5206\u6790\uff0c\u7ed9\u51fa\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<p><strong>\u95ee\u9898\u63cf\u8ff0<\/strong><\/p>\n<p>\u76ee\u6807\u662f\u901a\u8fc7\u534f\u7a0b\u626b\u63cf\u76ee\u6807\u4e3b\u673a\u8303\u56f4\u5185\u7684\u5f00\u653e\u7aef\u53e3\uff0c\u4f8b\u5982\u626b\u63cf149.129.68.235\u76841-1024\u7aef\u53e3\u3002\u4f46\u4ee3\u7801\u8fd0\u884c\u540e\u5374\u53d1\u73b0\u534f\u7a0b\u5728\u5c06\u7ed3\u679c\u5199\u5165\u901a\u9053\u4e4b\u524d\u5c31\u79bb\u5f00\u4e86\u3002<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6848<\/strong><\/p>\n<p>\u95ee\u9898\u5728\u4e8e\u4e3b\u534f\u7a0b\u5728\u534f\u7a0b\u5904\u7406\u5b8c\u4efb\u52a1\u4e4b\u524d\u5c31\u5173\u95ed\u4e86\u7ba1\u9053\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528sync.waitgroup\u6765\u4fdd\u8bc1\u5728\u6240\u6709\u534f\u7a0b\u5b8c\u6210\u4efb\u52a1\u4e4b\u524d\uff0c\u4e3b\u534f\u7a0b\u4e0d\u4f1a\u5173\u95ed\u7ba1\u9053\u3002<\/p>\n<p><strong>\u4fee\u6539\u540e\u7684\u4ee3\u7801<\/strong><\/p>\n<pre>package main\n\nimport (\n    \"fmt\"\n    \"net\"\n    \"sync\"\n    \"time\"\n)\n\nfunc scanPort(jobChan &lt;-chan int, retChan chan&lt;- string, wg *sync.WaitGroup) {\n    defer wg.Done()\n\n    for port := range jobChan {\n        target := fmt.Sprintf(\"149.129.68.235:%d\", port)\n        _, err := net.DialTimeout(\"tcp\", target, 100*time.Millisecond)\n        if err == nil {\n            retChan &lt;- fmt.Sprintf(\"%s is open\", target)\n        }\n    }\n}\n\nfunc main() {\n    jobChan := make(chan int, 5)\n    retChan := make(chan string, 5)\n\n    go func() {\n        for i := 0; i &lt; 1024; i++ {\n            jobChan &lt;- i\n        }\n        close(jobChan)\n    }()\n\n    wg := sync.WaitGroup{}\n\n    \/\/ \u521b\u5efan\u4e2a\u534f\u7a0b\n    for i := 0; i &lt; 10; i++ {\n        wg.Add(1)\n        go scanPort(jobChan, retChan, &amp;wg)\n    }\n\n    \/\/ \u8f93\u51fa\u7ed3\u679c\n    go func() {\n        for ret := range retChan {\n            fmt.Println(ret)\n        }\n    }()\n\n    \/\/ \u7b49\u5f85\u534f\u7a0b\u5b8c\u6210\n    wg.Wait()\n    close(retChan)\n}<\/pre>\n<p>\u5728\u4fee\u6539\u540e\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528sync.waitgroup\u6765\u8ddf\u8e2a\u6b63\u5728\u5de5\u4f5c\u7684\u534f\u7a0b\u6570\u91cf\u3002\u5f53\u6240\u6709\u534f\u7a0b\u6267\u884c\u5b8c\u6bd5\uff08wg.done()\uff09\uff0c\u4e14\u5df2\u7ecf\u5904\u7406\u5b8c\u4efb\u52a1\u7ba1\u9053\u4e2d\u7684\u6240\u6709\u7ed3\u679c\u540e\uff0c\u4e3b\u534f\u7a0b\u624d\u4f1a\u5173\u95ed\u7ba1\u9053\u3002\u8fd9\u6837\u5c31\u53ef\u4ee5\u786e\u4fdd\u534f\u7a0b\u4e0d\u4f1a\u63d0\u524d\u9000\u51fa\u3002<\/p>\n<p>\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8eGOLANG\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   \u4e00\u4f53\u673a\u7535\u8111\u6545\u969c\u53ca\u89e3\u51b3\u65b9\u6848\n <\/dd>\n<\/dl>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   \u5982\u4f55\u4f7f\u7528 JavaScript \u8ba1\u7b97 Canvas \u4e2d\u4e0d\u89c4\u5219\u56fe\u5f62\u7684\u9762\u79ef\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u52aa\u529b\u5b66\u4e60\u5427\uff01\u672c\u6587 \u300a&#46;&#46;&#46;<\/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-206579","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206579","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=206579"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206579\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=206579"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=206579"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=206579"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}