{"id":2684,"date":"2015-07-14T17:29:29","date_gmt":"2015-07-14T09:29:29","guid":{"rendered":"http:\/\/blog.qdac.cc\/?p=2684"},"modified":"2015-07-16T08:27:33","modified_gmt":"2015-07-16T00:27:33","slug":"qworker-%e4%bd%bf%e7%94%a8qworker%e7%9a%84%e5%bb%b6%e8%bf%9f%e5%8a%9f%e8%83%bd%e5%bf%ab%e9%80%9f%e6%96%ad%e6%8e%89%e4%b8%80%e4%b8%aa%e6%97%a0%e6%95%88%e7%9a%84tcp%e8%bf%9e%e6%8e%a5","status":"publish","type":"post","link":"https:\/\/blog.qdac.cc\/?p=2684","title":{"rendered":"[QWorker] \u4f7f\u7528QWorker\u7684\u5ef6\u8fdf\u529f\u80fd\u5feb\u901f\u65ad\u6389\u4e00\u4e2a\u65e0\u6548\u7684TCP\u8fde\u63a5"},"content":{"rendered":"<p>TCP \u534f\u8bae\u7ecf\u5386\u4e86\u6f2b\u957f\u7684\u65f6\u95f4\u53d1\u5c55\u5230\u73b0\u5728\uff0c\u5176\u8fde\u63a5\u5230\u4e00\u4e2a\u5730\u5740\u65f6\uff0c\u5982\u679c\u5bf9\u65b9\u5730\u5740\u4e0d\u5b58\u5728\u800c\u4e14\u6ca1\u6709 ICMP \u534f\u8bae\u8fd4\u56de\u76ee\u6807\u4e0d\u53ef\u8fbe\u6d88\u606f\u65f6\uff0c\u8fde\u63a5\u5c31\u4f1a\u6f2b\u957f\u7684\u7b49\u5f85\u91cd\u8bd5\u5931\u8d25\u3002\u8fd9\u663e\u7136\u5728\u7f51\u7edc\u5e26\u5bbd\u6bd4 TCP \u534f\u8bae\u4ea7\u751f\u65f6\u9ad8\u51fa\u4e0d\u77e5\u9053 N \u500d\u7684\u4eca\u5929\uff0c\u662f\u4e00\u4e2a\u6ca1\u6709\u610f\u4e49\u7684\u7b49\u5f85\uff0c\u800c\u5f53\u6211\u4eec\u60f3\u8981\u63a7\u5236\u8fd9\u4e2a\u8fde\u63a5\u65f6\u95f4\uff0c\u6211\u4eec\u4f1a\u53d1\u73b0\u6211\u4eec\u7adf\u7136\u65e0\u4ece\u4e0b\u624b\uff08\u81f3\u5c11\u6211\u4e0d\u77e5\u9053\uff0c\u4e5f\u8bb8\u4f60\u77e5\u9053\uff09\u3002<\/p>\n<p>\u90a3\u4e48\uff0c\u672c\u6587\u5c1d\u8bd5\u5229\u7528 QWorker \u7684\u5ef6\u8fdf\u4f5c\u4e1a\u529f\u80fd\u6765\u65ad\u5f00\u8fde\u63a5\uff08socket \u51fd\u6570\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\uff09\u3002<\/p>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u4f5c\u4e1a\u7684\u552f\u4e00\u5185\u5bb9\u5c31\u662f\u5173\u95ed\u8fd9\u4e2a\u8fde\u63a5\u5bf9\u5e94\u7684\u53e5\u67c4\uff1a<\/p>\n<pre class=\"lang:delphi decode:true\">procedure TForm1.DoCloseSocket(AJob: PQJob);\r\nbegin\r\n  CloseSocket(THandle(AJob.Data));\r\nend;<\/pre>\n<p>\u7136\u540e\uff0c\u6211\u4eec\u5728\u8c03\u7528 connect \u8fde\u63a5\u5230\u8fdc\u7a0b\u4e4b\u524d\uff0cDelay \u4e00\u4e0b\u8fd9\u4e2a\u4f5c\u4e1a\uff0c\u8fd9\u91cc\u5ef6\u8fdf1\u79d2\uff0c\u4e5f\u5c31\u662f\u8bf41\u79d2\u540e\u8fd8\u8fde\u4e0d\u4e0a\uff0c\u5c31\u53d6\u6d88\u8fd9\u4e2a\u8fde\u63a5\uff1a<\/p>\n<pre class=\"lang:delphi decode:true \">AJobHandle:=Workers.Delay(DoCloseSocket, Q1Second, Pointer(AHandle));\r\nif connect(AHandle, sockaddr_in(Addr), SizeOf(Addr)) &lt;&gt; SOCKET_ERROR then\r\n  begin\r\n  Workers.ClearSingleJob(AJobHandle);\r\n  \/\/\u8fde\u63a5\u4e0a\u4e86\uff0c\u6b63\u5e38\u5904\u7406\r\n  end\r\nelse\r\n  begin\r\n  AErrorCode := GetLastError;\r\n  if AErrorCode &lt;&gt; WSAENOTSOCK then\/\/\u5982\u679c\u662f\u7531\u4f5c\u4e1a\u5173\u95ed\u7684\u8bdd\uff0c\u8fd4\u56de\u7684\u9519\u8bef\u4ee3\u7801\u662fWSANOTSOCK\r\n     begin\r\n     \/\/\u5904\u7406\u5176\u5b83\u9519\u8bef\r\n     end;\r\n  end;<\/pre>\n<p>OK\uff0c\u4f7f\u7528 QWorker \u5904\u7406\u8fd9\u4e2a\u95ee\u9898\u5c31\u8fd9\u4e48\u7b80\u5355\u3002\u7528 QWorker \uff0c\u5c31\u8fd9\u4e48\u81ea\u4fe1\uff01\uff08\u6d77\u98de\u4e1d\u5462\uff1f\u627e\u4f5c\u8005\u8981\u7248\u6743\u8d39\uff09<\/p>\n<p>\u597d\u4e86\uff0c\u6211\u4eec\u6765\u4e00\u4e2a\u4e0d\u4f9d\u8d56QWorker\u7684\u6807\u51c6\u7684\u5b9e\u73b0\u5427\uff0c\u76f4\u63a5\u8c03\u7528ConnectTo\uff08\u76ee\u6807IP\uff0c\u76ee\u6807\u7aef\u53e3\uff0c\u8d85\u65f6\u65f6\u95f4\uff09\u5c31\u8981\u4ee5\u4e86\uff1a<\/p>\n<pre class=\"lang:delphi decode:true \">function ConnectTo(const Addr: TInAddr; const APort: Word;\r\n  ATimeout: Cardinal): TSocket;\r\nvar\r\n  ARemote: TSockAddrIn;\r\n  AErrorCode: Cardinal;\r\n  tm: TTimeVal;\r\n  AFlag: Integer;\r\n  AConnected: Boolean;\r\n  AFd: TFdSet;\r\nbegin\r\n  AConnected := False;\r\n  Result := socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);\r\n  if Result &lt;&gt; INVALID_SOCKET then\r\n  begin\r\n    FillChar(ARemote, SizeOf(TSockAddrIn), 0);\r\n    ARemote.sin_family := AF_INET;\r\n    ARemote.sin_port := htons(APort);\r\n    ARemote.sin_addr := Addr;\r\n    AFlag := 1;\r\n    if ioctlsocket(Result, FIONBIO, AFlag) &lt;&gt; SOCKET_ERROR then\r\n    begin\r\n      AConnected := connect(Result, sockaddr_in(ARemote), SizeOf(ARemote)) &lt;&gt;\r\n        SOCKET_ERROR;\r\n      if not AConnected then\r\n      begin\r\n        tm.tv_sec := ATimeout div 1000;\r\n        tm.tv_usec := (ATimeout mod 1000) * 1000;\r\n        FD_Zero(AFd);\r\n        FD_Set(Result, AFd);\r\n        if select(1, nil, @AFd, nil, @tm) &lt;&gt; SOCKET_ERROR then\r\n        begin\r\n          AConnected := Fd_IsSet(Result, AFd);\r\n          if not AConnected then\r\n          begin\r\n            CloseSocket(Result);\r\n            AErrorCode := WSAETIMEDOUT;\r\n          end;\r\n        end\r\n        else\r\n        begin\r\n          AErrorCode := GetLastError;\r\n          CloseSocket(Result);\r\n        end;\r\n      end;\r\n    end\r\n    else\r\n      AErrorCode := GetLastError;\r\n  end\r\n  else\r\n    AErrorCode := GetLastError;\r\n  if not AConnected then\r\n  begin\r\n    Result := INVALID_SOCKET;\r\n    SetLastError(AErrorCode);\r\n  end\r\n  else \/\/ \u8fd8\u539f\u56de\u540c\u6b65\u6a21\u5f0f\r\n  begin\r\n    AFlag := 0;\r\n    ioctlsocket(Result, FIONBIO, AFlag);\r\n  end;\r\nend;<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>TCP \u534f\u8bae\u7ecf\u5386\u4e86\u6f2b\u957f\u7684\u65f6\u95f4\u53d1\u5c55\u5230\u73b0\u5728\uff0c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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