{"id":46924,"date":"2025-07-30T04:47:45","date_gmt":"2025-07-29T20:47:45","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/46924.html"},"modified":"2025-07-30T04:47:45","modified_gmt":"2025-07-29T20:47:45","slug":"moduo%e4%b9%8b%e6%9c%8d%e5%8a%a1%e5%99%a8tcpserver","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/46924.html","title":{"rendered":"moduo\u4e4b\u670d\u52a1\u5668TcpServer"},"content":{"rendered":"<h2>\u7b80\u4ecb<\/h2>\n<p>TcpServer\u5b9e\u73b0\u4e86\u591a\u7ebf\u7a0b\u4e3b\u4eceReactor\u670d\u52a1\u5668<\/p>\n<h2>\u7ed3\u6784<\/h2>\n<p>#mermaid-svg-NpKBEy7p5qZMONaq {font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:16px;fill:#333;}#mermaid-svg-NpKBEy7p5qZMONaq .error-icon{fill:#552222;}#mermaid-svg-NpKBEy7p5qZMONaq .error-text{fill:#552222;stroke:#552222;}#mermaid-svg-NpKBEy7p5qZMONaq .edge-thickness-normal{stroke-width:2px;}#mermaid-svg-NpKBEy7p5qZMONaq 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.aggregation{fill:#ECECFF!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-NpKBEy7p5qZMONaq #aggregationEnd,#mermaid-svg-NpKBEy7p5qZMONaq .aggregation{fill:#ECECFF!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-NpKBEy7p5qZMONaq .edgeTerminals{font-size:11px;}#mermaid-svg-NpKBEy7p5qZMONaq :root{&#8211;mermaid-font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;}<span class=\"edgeLabel\"><\/span><span class=\"edgeLabel\"><\/span><span class=\"edgeLabel\"><\/span><span class=\"nodeLabel\"><\/span><span class=\"nodeLabel\">TcpServer<\/span><span class=\"nodeLabel\"><\/span><span class=\"nodeLabel\">Acceptor<\/span><span class=\"nodeLabel\"><\/span><span class=\"nodeLabel\">TcpConnection<\/span><span class=\"nodeLabel\"><\/span><span class=\"nodeLabel\">EventLoopThreadPool<\/span><\/p>\n<p>Acceptor\u65b0\u8fde\u63a5\u56de\u8c03&#xff1a;<\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">newConnection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> sockfd<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> InetAddress<span class=\"token operator\">&amp;<\/span> peerAddr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>TcpConnection\u7684\u56db\u4e2a\u56de\u8c03<\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">setConnectionCallback<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> ConnectionCallback<span class=\"token operator\">&amp;<\/span> cb<span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">{<\/span> connectionCallback_ <span class=\"token operator\">&#061;<\/span> cb<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/\/ Set message callback.<\/span><br \/>\n  <span class=\"token comment\">\/\/\/ Not thread safe.<\/span><br \/>\n  <span class=\"token keyword\">void<\/span> <span class=\"token function\">setMessageCallback<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> MessageCallback<span class=\"token operator\">&amp;<\/span> cb<span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">{<\/span> messageCallback_ <span class=\"token operator\">&#061;<\/span> cb<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/\/ Set write complete callback.<\/span><br \/>\n  <span class=\"token comment\">\/\/\/ Not thread safe.<\/span><br \/>\n  <span class=\"token keyword\">void<\/span> <span class=\"token function\">setWriteCompleteCallback<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> WriteCompleteCallback<span class=\"token operator\">&amp;<\/span> cb<span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">{<\/span> writeCompleteCallback_ <span class=\"token operator\">&#061;<\/span> cb<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">removeConnection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> TcpConnectionPtr<span class=\"token operator\">&amp;<\/span> conn<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u4e8b\u4ef6\u5faa\u73af\u7ebf\u7a0b\u6c60\u7ebf\u7a0b\u542f\u52a8\u521d\u59cb\u56de\u8c03&#xff1a;<\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">setThreadInitCallback<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> ThreadInitCallback<span class=\"token operator\">&amp;<\/span> cb<span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">{<\/span> threadInitCallback_ <span class=\"token operator\">&#061;<\/span> cb<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><\/p>\n<h3>Acceptor\u8fde\u63a5\u56de\u8c03<\/h3>\n<ul>\n<li>\u4ece\u4e8b\u4ef6\u5faa\u73af\u6c60\u4e2d\u8f6e\u5faa\u65b9\u5f0f\u9009\u53d6\u4e00\u4e2a<\/li>\n<li>\u521b\u5efaTcpConnection&#xff0c;\u5c06TcpServer\u8bbe\u7f6e\u7684connectionCallback_, messageCallback_\u548cwriteCompleteCallback_\u4f20\u9012\u5230TcpConnection&#xff0c;\u540c\u65f6\u8bbe\u7f6e\u5173\u95ed\u8fde\u63a5\u7684\u56de\u8c03removeConnection<\/li>\n<li>\u521b\u5efa\u8fde\u63a5\u5efa\u7acb\u7684\u4efb\u52a1connectEstablished\u653e\u5165\u8fde\u63a5\u4e8b\u4ef6\u5faa\u73af\u7684\u961f\u5217\u4e2d\u5f02\u6b65\u6267\u884c<\/li>\n<\/ul>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token class-name\">TcpServer<\/span><span class=\"token operator\">::<\/span><span class=\"token function\">newConnection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> sockfd<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> InetAddress<span class=\"token operator\">&amp;<\/span> peerAddr<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n  loop_<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">assertInLoopThread<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  EventLoop<span class=\"token operator\">*<\/span> ioLoop <span class=\"token operator\">&#061;<\/span> threadPool_<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">getNextLoop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token keyword\">char<\/span> buf<span class=\"token punctuation\">[<\/span><span class=\"token number\">64<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token function\">snprintf<\/span><span class=\"token punctuation\">(<\/span>buf<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">sizeof<\/span> buf<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;-%s#%d&#034;<\/span><span class=\"token punctuation\">,<\/span> ipPort_<span class=\"token punctuation\">.<\/span><span class=\"token function\">c_str<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> nextConnId_<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token operator\">&#043;&#043;<\/span>nextConnId_<span class=\"token punctuation\">;<\/span><br \/>\n  string connName <span class=\"token operator\">&#061;<\/span> name_ <span class=\"token operator\">&#043;<\/span> buf<span class=\"token punctuation\">;<\/span><\/p>\n<p>  LOG_INFO <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;TcpServer::newConnection [&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> name_<br \/>\n           <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;] &#8211; new connection [&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> connName<br \/>\n           <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;] from &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> peerAddr<span class=\"token punctuation\">.<\/span><span class=\"token function\">toIpPort<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  InetAddress <span class=\"token function\">localAddr<\/span><span class=\"token punctuation\">(<\/span>sockets<span class=\"token operator\">::<\/span><span class=\"token function\">getLocalAddr<\/span><span class=\"token punctuation\">(<\/span>sockfd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token comment\">\/\/ FIXME poll with zero timeout to double confirm the new connection<\/span><br \/>\n  <span class=\"token comment\">\/\/ FIXME use make_shared if necessary<\/span><br \/>\n  TcpConnectionPtr <span class=\"token function\">conn<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token function\">TcpConnection<\/span><span class=\"token punctuation\">(<\/span>ioLoop<span class=\"token punctuation\">,<\/span><br \/>\n                                          connName<span class=\"token punctuation\">,<\/span><br \/>\n                                          sockfd<span class=\"token punctuation\">,<\/span><br \/>\n                                          localAddr<span class=\"token punctuation\">,<\/span><br \/>\n                                          peerAddr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  connections_<span class=\"token punctuation\">[<\/span>connName<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> conn<span class=\"token punctuation\">;<\/span><br \/>\n  conn<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">setConnectionCallback<\/span><span class=\"token punctuation\">(<\/span>connectionCallback_<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  conn<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">setMessageCallback<\/span><span class=\"token punctuation\">(<\/span>messageCallback_<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  conn<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">setWriteCompleteCallback<\/span><span class=\"token punctuation\">(<\/span>writeCompleteCallback_<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  conn<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">setCloseCallback<\/span><span class=\"token punctuation\">(<\/span><br \/>\n      std<span class=\"token operator\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>TcpServer<span class=\"token operator\">::<\/span>removeConnection<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">,<\/span> _1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ FIXME: unsafe<\/span><br \/>\n  ioLoop<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">runInLoop<\/span><span class=\"token punctuation\">(<\/span>std<span class=\"token operator\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>TcpConnection<span class=\"token operator\">::<\/span>connectEstablished<span class=\"token punctuation\">,<\/span> conn<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>\u8fde\u63a5\u5efa\u7acb\u56de\u8c03connectEstablished<\/h3>\n<ul>\n<li>\u8bbe\u7f6e\u8fde\u63a5\u72b6\u6001\u4e3akConnected<\/li>\n<li>\u4e8b\u4ef6\u901a\u9053\u7ed1\u5b9a\u8fde\u63a5\u5bf9\u8c61&#xff0c;\u5f00\u542f\u8bfb\u4e8b\u4ef6<\/li>\n<li>\u6267\u884c\u4e8b\u4ef6\u56de\u8c03connectionCallback_<\/li>\n<\/ul>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token class-name\">TcpConnection<\/span><span class=\"token operator\">::<\/span><span class=\"token function\">connectEstablished<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n  loop_<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">assertInLoopThread<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token function\">assert<\/span><span class=\"token punctuation\">(<\/span>state_ <span class=\"token operator\">&#061;&#061;<\/span> kConnecting<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token function\">setState<\/span><span class=\"token punctuation\">(<\/span>kConnected<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  channel_<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">tie<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">shared_from_this<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  channel_<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">enableReading<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token function\">connectionCallback_<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">shared_from_this<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>\u5173\u95ed\u8fde\u63a5\u56de\u8c03<\/h3>\n<ul>\n<li>\u6dfb\u52a0\u4efb\u52a1removeConnectionInLoop\u5230acceptor\u6240\u5728\u7684\u4e8b\u4ef6\u5faa\u73af\u961f\u5217\u4e2d\u5f02\u6b65\u6267\u884c<\/li>\n<li>\u8fde\u63a5\u5bb9\u5668\u4e2d\u5220\u9664\u5bf9\u5e94\u8fde\u63a5<\/li>\n<li>\u6dfb\u52a0\u4efb\u52a1connectDestroyed\u5230\u8fde\u63a5\u6240\u5728\u7684\u4e8b\u4ef6\u5faa\u73af\u961f\u5217\u4e2d\u5f02\u6b65\u6267\u884c<\/li>\n<\/ul>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token class-name\">TcpServer<\/span><span class=\"token operator\">::<\/span><span class=\"token function\">removeConnection<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> TcpConnectionPtr<span class=\"token operator\">&amp;<\/span> conn<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token comment\">\/\/ FIXME: unsafe<\/span><br \/>\n  loop_<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">runInLoop<\/span><span class=\"token punctuation\">(<\/span>std<span class=\"token operator\">::<\/span><span class=\"token function\">bind<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>TcpServer<span class=\"token operator\">::<\/span>removeConnectionInLoop<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">,<\/span> conn<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token class-name\">TcpServer<\/span><span class=\"token operator\">::<\/span><span class=\"token function\">removeConnectionInLoop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> TcpConnectionPtr<span class=\"token operator\">&amp;<\/span> conn<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n  loop_<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">assertInLoopThread<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  LOG_INFO <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;TcpServer::removeConnectionInLoop [&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> name_<br \/>\n           <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;] &#8211; connection &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> conn<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">name<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  size_t n <span class=\"token operator\">&#061;<\/span> connections_<span class=\"token punctuation\">.<\/span><span class=\"token function\">erase<\/span><span class=\"token punctuation\">(<\/span>conn<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">name<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">(<\/span><span class=\"token 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