{"id":206198,"date":"2025-06-12T08:41:02","date_gmt":"2025-06-12T00:41:02","guid":{"rendered":"https:\/\/server.hk\/cnblog\/206198\/"},"modified":"2025-06-12T08:41:02","modified_gmt":"2025-06-12T00:41:02","slug":"%e5%a6%82%e4%bd%95%e5%88%a4%e6%96%ad-go-%e4%b8%ad%e6%98%a0%e5%b0%84%e4%b8%ad-net-conn-%e7%b1%bb%e5%9e%8b%e7%9a%84%e5%8f%98%e9%87%8f%e7%b1%bb%e5%9e%8b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/206198\/","title":{"rendered":"\u5982\u4f55\u5224\u65ad Go \u4e2d\u6620\u5c04\u4e2d net.Conn \u7c7b\u578b\u7684\u53d8\u91cf\u7c7b\u578b\uff1f"},"content":{"rendered":"

\u5728GOLANG\u5b9e\u6218\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e9b\u8fd9\u6837\u90a3\u6837\u7684\u95ee\u9898\uff0c\u7136\u540e\u8981\u5361\u597d\u534a\u5929\uff0c\u7b49\u95ee\u9898\u89e3\u51b3\u4e86\u624d\u53d1\u73b0\u539f\u6765\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u662f\u6ca1\u6709\u638c\u63e1\u597d\u3002\u4eca\u5929GOLANG\u5c31\u6574\u7406\u5206\u4eab\u300a\u5982\u4f55\u5224\u65ad Go \u4e2d\u6620\u5c04\u4e2d net.Conn \u7c7b\u578b\u7684\u53d8\u91cf\u7c7b\u578b\uff1f\u300b\uff0c\u804a\u804a\uff0c\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u5230\u6b63\u5728\u52aa\u529b\u8d5a\u94b1\u7684\u4f60\u3002,
\n,
\n\u5982\u4f55\u5224\u65ad go \u4e2d\u6620\u5c04\u4e2d net.conn \u7c7b\u578b\u7684\u53d8\u91cf\u7c7b\u578b<\/strong>,\u5728 go \u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u6620\u5c04\u5b58\u50a8\u5404\u79cd\u7c7b\u578b\u7684\u6570\u636e\u3002\u5982\u679c\u9700\u8981\u5904\u7406\u6620\u5c04\u4e2d\u7684 net.conn \u53d8\u91cf\uff0c\u9700\u8981\u5224\u65ad\u5176\u7c7b\u578b\u3002\u4e0b\u9762\u4ecb\u7ecd\u4e00\u4e2a\u89e3\u51b3\u6b64\u95ee\u9898\u7684\u7b80\u5355\u65b9\u6cd5\u3002,
\n\u7c7b\u578b\u65ad\u8a00\u8bed\u6cd5<\/strong>,\u7c7b\u578b\u65ad\u8a00\u662f\u4e00\u79cd\u8bed\u6cd5\u7ed3\u6784\uff0c\u5141\u8bb8\u4f60\u5728\u8fd0\u884c\u65f6\u68c0\u67e5\u53d8\u91cf\u7684\u7c7b\u578b\u3002\u5176\u8bed\u6cd5\u5982\u4e0b\uff1a,\u5176\u4e2d\uff1a,
\n\u5e94\u7528\u4e8e net.conn \u53d8\u91cf<\/strong>,\u8003\u8651\u4ee5\u4e0b\u793a\u4f8b\uff1a,\u8981\u7ed9\u6bcf\u4e2a\u5ba2\u6237\u7aef\u53d1\u9001\u6d88\u606f\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a,\u901a\u8fc7\u7c7b\u578b\u65ad\u8a00 client[“conn”].(*net.tcpconn)\uff0c\u6211\u4eec\u53ef\u4ee5\u68c0\u67e5\u6bcf\u4e2a\u5ba2\u6237\u7aef\u7684 “conn” \u5b57\u6bb5\u662f\u5426\u4e3a *net.tcpconn \u7c7b\u578b\u7684\u53d8\u91cf\u3002\u5982\u679c\u662f\uff0cconn \u53d8\u91cf\u5c06\u88ab\u8d4b\u503c\u8be5\u503c\uff0c\u5e76\u4e14\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 conn \u6765\u53d1\u9001\u6d88\u606f\u3002,
\n\u6ce8\u610f\uff1a<\/strong>,\u4ee5\u4e0a\u5c31\u662f\u300a\u5982\u4f55\u5224\u65ad Go \u4e2d\u6620\u5c04\u4e2d net.Conn \u7c7b\u578b\u7684\u53d8\u91cf\u7c7b\u578b\uff1f\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8e\u7684\u8d44\u6599\u8bf7\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\uff01,\u5982\u679c\u7c7b\u578b\u65ad\u8a00\u5931\u8d25\uff08ok \u4e3a false\uff09\uff0c\u5219\u5e94\u8be5\u91c7\u53d6\u9002\u5f53\u63aa\u65bd\uff08\u4f8b\u5982\u8df3\u8fc7\u8be5\u5ba2\u6237\u7aef\uff09\u3002,\u5982\u679c\u4f60\u4e0d\u77e5\u9053\u786e\u5207\u7684\u7c7b\u578b\uff0c\u4f46\u77e5\u9053\u5b83\u5b9e\u73b0\u4e86 net.conn \u63a5\u53e3\uff0c\u53ef\u4ee5\u4f7f\u7528 conn, ok := client[“conn”].(net.conn) \u4ee3\u66ff\u3002,<expression> \u662f\u5305\u542b\u53d8\u91cf\u7684\u503c\u7684\u8868\u8fbe\u5f0f,<variable> \u662f\u8981\u5224\u65ad\u7c7b\u578b\u7684\u53d8\u91cf,<type> \u662f\u8981\u65ad\u8a00\u7684\u7c7b\u578b,\u5982\u4f55\u5224\u65ad go \u4e2d\u6620\u5c04\u4e2d net.conn \u7c7b\u578b\u7684\u53d8\u91cf\u7c7b\u578b,\u5728GOLANG\u5b9e\u6218\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e9b\u8fd9\u6837\u90a3\u6837\u7684\u95ee\u9898\uff0c\u7136\u540e\u8981\u5361\u597d\u534a\u5929\uff0c\u7b49\u95ee\u9898\u89e3\u51b3\u4e86\u624d\u53d1\u73b0\u539f\u6765\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u662f\u6ca1\u6709\u638c\u63e1\u597d\u3002\u4eca\u5929GOLANG\u5c31\u6574\u7406\u5206\u4eab\u300a\u5982\u4f55\u5224\u65ad Go \u4e2d\u6620\u5c04\u4e2d net.Conn \u7c7b\u578b\u7684\u53d8\u91cf\u7c7b\u578b\uff1f\u300b\uff0c\u804a\u804a\uff0c\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u5230\u6b63\u5728\u52aa\u529b\u8d5a\u94b1\u7684\u4f60\u3002,
\n<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u5982\u4f55\u5224\u65ad Go \u4e2d\u6620\u5c04\u4e2d net.Conn \u7c7b\u578b\u7684\u53d8\u91cf\u7c7b\u578b\uff1f<\/span><\/p>\n

\u5982\u4f55\u5224\u65ad Go \u4e2d\u6620\u5c04\u4e2d net.Conn \u7c7b\u578b\u7684\u53d8\u91cf\u7c7b\u578b\uff1f<\/h1>\n

2024-11-06 11:25:03<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u5728GOLANG\u5b9e\u6218\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e9b\u8fd9\u6837\u90a3\u6837\u7684\u95ee\u9898\uff0c\u7136\u540e\u8981\u5361\u597d\u534a\u5929\uff0c\u7b49\u95ee\u9898\u89e3\u51b3\u4e86\u624d\u53d1\u73b0\u539f\u6765\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u662f\u6ca1\u6709\u638c\u63e1\u597d\u3002\u4eca\u5929GOLANG\u5c31\u6574\u7406\u5206\u4eab\u300a\u5982\u4f55\u5224\u65ad Go \u4e2d\u6620\u5c04\u4e2d net.Conn \u7c7b\u578b\u7684\u53d8\u91cf\u7c7b\u578b\uff1f\u300b\uff0c\u804a\u804a\uff0c\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u5230\u6b63\u5728\u52aa\u529b\u8d5a\u94b1\u7684\u4f60\u3002<\/p>\n

<\/p>\n

\u5982\u4f55\u5224\u65ad go \u4e2d\u6620\u5c04\u4e2d net.conn \u7c7b\u578b\u7684\u53d8\u91cf\u7c7b\u578b<\/strong><\/p>\n

\u5728 go \u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u6620\u5c04\u5b58\u50a8\u5404\u79cd\u7c7b\u578b\u7684\u6570\u636e\u3002\u5982\u679c\u9700\u8981\u5904\u7406\u6620\u5c04\u4e2d\u7684 net.conn \u53d8\u91cf\uff0c\u9700\u8981\u5224\u65ad\u5176\u7c7b\u578b\u3002\u4e0b\u9762\u4ecb\u7ecd\u4e00\u4e2a\u89e3\u51b3\u6b64\u95ee\u9898\u7684\u7b80\u5355\u65b9\u6cd5\u3002<\/p>\n

\u7c7b\u578b\u65ad\u8a00\u8bed\u6cd5<\/strong><\/p>\n

\u7c7b\u578b\u65ad\u8a00\u662f\u4e00\u79cd\u8bed\u6cd5\u7ed3\u6784\uff0c\u5141\u8bb8\u4f60\u5728\u8fd0\u884c\u65f6\u68c0\u67e5\u53d8\u91cf\u7684\u7c7b\u578b\u3002\u5176\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n

if <variable>, ok := <expression>.(<type>) {\n    \/\/ do something with variable\n}<\/pre>\n
\u5176\u4e2d\uff1a<\/p>\n
    \n
  • <variable> \u662f\u8981\u5224\u65ad\u7c7b\u578b\u7684\u53d8\u91cf<\/li>\n
  • <expression> \u662f\u5305\u542b\u53d8\u91cf\u7684\u503c\u7684\u8868\u8fbe\u5f0f<\/li>\n
  • <type> \u662f\u8981\u65ad\u8a00\u7684\u7c7b\u578b<\/li>\n<\/ul>\n
    \u5e94\u7528\u4e8e net.conn \u53d8\u91cf<\/strong><\/p>\n
    \u8003\u8651\u4ee5\u4e0b\u793a\u4f8b\uff1a<\/p>\n
    type connmap map[string]interface{}\n\n\/\/ \u5047\u8bbe\u8fd9\u4e2a\u6620\u5c04\u5305\u542b\u4e00\u4e2a\u5ba2\u6237\u7aef\u5217\u8868\uff0c\u5176\u4e2d\u6bcf\u4e2a\u5ba2\u6237\u7aef\u90fd\u6709\u4e00\u4e2a \"conn\" \u5b57\u6bb5\uff0c\u5176\u503c\u4e3a net.conn\u3002\nvar clientmap connmap = ... \/\/ \u7701\u7565\u521b\u5efa\u6620\u5c04\u7684\u4ee3\u7801<\/pre>\n
    \u8981\u7ed9\u6bcf\u4e2a\u5ba2\u6237\u7aef\u53d1\u9001\u6d88\u606f\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n
    for _, client := range clientMap {\n    if conn, ok := client[\"conn\"].(*net.TCPConn); ok {\n        conn.Write([]byte(\"\u540c\u5fd7\u4eec\u597d\"))\n    }\n}<\/pre>\n
    \u901a\u8fc7\u7c7b\u578b\u65ad\u8a00 client[“conn”].(*net.tcpconn)\uff0c\u6211\u4eec\u53ef\u4ee5\u68c0\u67e5\u6bcf\u4e2a\u5ba2\u6237\u7aef\u7684 “conn” \u5b57\u6bb5\u662f\u5426\u4e3a *net.tcpconn \u7c7b\u578b\u7684\u53d8\u91cf\u3002\u5982\u679c\u662f\uff0cconn \u53d8\u91cf\u5c06\u88ab\u8d4b\u503c\u8be5\u503c\uff0c\u5e76\u4e14\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 conn \u6765\u53d1\u9001\u6d88\u606f\u3002<\/p>\n
    \u6ce8\u610f\uff1a<\/strong><\/p>\n
      \n
    • \u5982\u679c\u4f60\u4e0d\u77e5\u9053\u786e\u5207\u7684\u7c7b\u578b\uff0c\u4f46\u77e5\u9053\u5b83\u5b9e\u73b0\u4e86 net.conn \u63a5\u53e3\uff0c\u53ef\u4ee5\u4f7f\u7528 conn, ok := client[“conn”].(net.conn) \u4ee3\u66ff\u3002<\/li>\n
    • \u5982\u679c\u7c7b\u578b\u65ad\u8a00\u5931\u8d25\uff08ok \u4e3a false\uff09\uff0c\u5219\u5e94\u8be5\u91c7\u53d6\u9002\u5f53\u63aa\u65bd\uff08\u4f8b\u5982\u8df3\u8fc7\u8be5\u5ba2\u6237\u7aef\uff09\u3002<\/li>\n<\/ul>\n
      \u4ee5\u4e0a\u5c31\u662f\u300a\u5982\u4f55\u5224\u65ad Go \u4e2d\u6620\u5c04\u4e2d net.Conn \u7c7b\u578b\u7684\u53d8\u91cf\u7c7b\u578b\uff1f\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8e\u7684\u8d44\u6599\u8bf7\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\uff01<\/p>\n
      \n
      \n <\/dt>\n
      \n   \u63ed\u79d8\u7535\u8111\u566a\u97f3\uff1a\u4e3a\u4ec0\u4e48\u4f1a\u4ea7\u751f\uff1f\u5982\u4f55\u89e3\u51b3\uff1f\n <\/dd>\n<\/dl>\n
      \n
      \n <\/dt>\n
      \n   \u5982\u4f55\u8ba9 div \u7684\u5927\u5c0f\u6839\u636e\u5185\u5bb9\u81ea\u9002\u5e94\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
      \u5728GOLANG\u5b9e\u6218\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c...<\/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-206198","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206198","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=206198"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206198\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=206198"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=206198"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=206198"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}