{"id":2362,"date":"2015-04-27T09:12:58","date_gmt":"2015-04-27T01:12:58","guid":{"rendered":"http:\/\/blog.qdac.cc\/?p=2362"},"modified":"2015-04-27T09:20:52","modified_gmt":"2015-04-27T01:20:52","slug":"diocp-%e8%bf%90%e4%bd%9c%e6%a0%b8%e5%bf%83%e6%8e%a2%e5%af%86","status":"publish","type":"post","link":"https:\/\/blog.qdac.cc\/?p=2362","title":{"rendered":"DIOCP \u8fd0\u4f5c\u6838\u5fc3\u63a2\u5bc6"},"content":{"rendered":"

\u6765\u81ea\u7f51\u53cb\u5929\u5730\u5f26\u7684DIOCP\u65e9\u5df2\u7ecf\u5e7f\u4e3a\u4eba\u77e5\u4e86\uff0c\u6709\u5f88\u591a\u7684\u540c\u5b66\u90fd\u7528\u4e0a\u4e86\u5b83\uff0c\u751a\u81f3\u5404\u79cd\u53d8\u5f02\u3001\u4fee\u6539\u7248\u672c\u4e5f\u51fa\u4e86\u4e0d\u5c11\u3002\u6211\u6700\u8fd1\u4e5f\u5728\u5b66\u4e60DIOCP\uff0c\u6253\u7b97\u5c06\u5b83\u7528\u4e8e\u81ea\u5df1\u7684\u670d\u52a1\u7aef\uff0c\u4eca\u5929\u8ba9\u6211\u4eec\u6765\u4e00\u8d77\u63a2\u5bc6\u5b83\uff08DIOCP\uff09\u7684\u8fd0\u4f5c\u6838\u5fc3\u5427\u3002<\/p>\n

 <\/p>\n

DIOCP\u4f5c\u4e3a\u5bf9Windows\u7684IOCP\u5b8c\u6210\u7aef\u53e3\u5c01\u88c5\uff0c\u62e5\u6709\u4e86\u5f88\u9ad8\u7684\u6027\u80fd\uff0c\u7ecf\u8fc7\u5bf9ECHO\u793a\u4f8b\u7684\u6d4b\u8bd5\uff0c\u5b83\u80fd\u8f7b\u677e\u5e94\u5bf9\u51e0\u4e07\u8fde\u63a5\u548c\u5e76\u53d1\u3002\u7f51\u7edc\u901a\u8baf\u4e00\u822c\u5206\u4e3a6\u5927\u9636\u6bb5\uff1a\u8bf7\u6c42\u8fde\u63a5\u3001\u63a5\u53d7\u8fde\u63a5\u3001\u63a5\u6536\u6570\u636e\u3001\u5904\u7406\u6570\u636e\u3001\u56de\u590d\u6570\u636e\u3001\u65ad\u5f00\u8fde\u63a5\uff0c\u4e0b\u9762\u6211\u5c31\u4ece\u8fd96\u5927\u9636\u6bb5\u5165\u624b\uff0c\u6765\u770b\u770bDIOCP\u662f\u5982\u4f55\u5b9e\u73b0\u7684\u3002<\/p>\n

 <\/p>\n

\u4e00\u3001 \u8bf7\u6c42\u8fde\u63a5<\/strong><\/p>\n

 <\/p>\n

\u5b9e\u9645\u4e0a\u8fd9\u7b2c\u4e00\u9636\u6bb5\u7531\u5ba2\u6237\u7aef\u53d1\u8d77\uff0c\u6307\u5b9aHOST\u548cPort\u8bf7\u6c42\u8fde\u63a5\u6211\u4eec\u7684DIOCP\u670d\u52a1\u3002<\/p>\n

 <\/p>\n

\u4e8c\u3001 \u63a5\u53d7\u8fde\u63a5<\/strong><\/p>\n

 <\/p>\n

\u5728\u7b2c\u4e00\u9636\u6bb5\uff0c\u5ba2\u6237\u7aef\u8bf7\u6c42\u8fde\u63a5\u540e\uff0c\u6211\u4eec\u7684DIOCP\u670d\u52a1\u4f1a\u6536\u5230\u4e00\u4e2a\u8fde\u63a5\u8bf7\u6c42\uff0c\u8fd9\u65f6\u9ed8\u8ba4\u4f1a\u63a5\u53d7\u8fde\u63a5\u3002\u5728iocp.Sockets\u4e2d\uff0c\u53ef\u4ee5\u770b\u5230\u6211\u4eec\u7684\u670d\u52a1\u7c7bTIocpCustomTcpServer\uff0c\u5b83\u7ee7\u627f\u81eaTIocpCustom\uff0c\u5c31\u662fTIocpCustomTcpServer\u5b8c\u6210\u4e86\u8fd9\u6574\u4e2a\u7f51\u7edc\u901a\u8baf\u7684\u5404\u79cd\u8bf7\u6c42\u7684\u7ba1\u7406\u3002<\/p>\n

 <\/p>\n

TIocpCustomTcpServer\u662f\u4e00\u4e2a\u7528\u6237\u80fd\u76f4\u63a5\u4f7f\u7528\u7684DIOCP\u670d\u52a1\u7aef\u7c7b\uff0c\u5728TIocpCustomTcpServer\u88ab\u8c03\u7528Open\uff08\u6216Start\uff09\u65b9\u6cd5\u540e\uff0c\u5b83\u5148\u662f\u5f00\u542fIOCP\u4efb\u52a1\u5f15\u64ceIocpEngine\uff0c\u521d\u59cb\u5316\u76d1\u542cSocket\uff0c\u7ed1\u5b9a\u76d1\u542c\u7aef\u53e3\uff0c\u5f00\u59cb\u76d1\u542c\u5e76\u5c06Socket\u7ed1\u5b9a\u5230IOCP\u53e5\u67c4\u3002\u63a5\u4e0b\u6765\u5b83\u4f1a\u521d\u59cb\u5316\u6307\u5b9a\u6570\u91cf\u7684\u8bf7\u6c42\u63a5\u53d7\u5bf9\u8c61\uff0c\u7136\u540e\u518d\u8c03\u7528TiocpAcceptExRequest.PostRequest\uff08\u5185\u90e8\u8c03\u7528IocpAcceptEx\uff09\uff0c\u50cf\u671b\u592b\u77f3\u4e00\u6837\u7684\u5b88\u5019\u7740\u76d1\u542c\u7aef\u53e3\uff0c\u7b49\u7740\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u3002\u6709\u4eba\u53ef\u80fd\u4f1a\u95ee\u4e86\uff0c\u4efb\u52a1\u5f15\u64ce\u600e\u4e48\u77e5\u9053\u4efb\u52a1\u662f\u4ec0\u4e48\uff0c\u8ba9\u8c01\u6765\u5904\u7406\uff1f\u597d\u5427\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u770bTiocpRequest\uff0c\u5b83\u5185\u90e8\u6709\u4e00\u4e2aFoverlapped\uff0c\u5728Create\u65f6\uff0cFoverlapped.iocpRequest\u88ab\u8bbe\u5b9a\u4e3aSelf\uff0c TiocpAcceptExRequest\u662f\u7ee7\u627f\u81eaTiocpRequest\u7684\u3002\u5728PostRequest\u65b9\u6cd5\u4e2d\u8c03\u7528AcceptEx\u65f6\uff0c\u6709\u4e00\u4e2a\u53c2\u6570\u5c31\u662f@FOverlapped\uff0c\u5728\u4efb\u52a1\u5f15\u64ce\u4e2dGetQueuedCompletionStatus\u51fd\u6570\u4f1a\u8fd4\u56deOverlapped\uff0c\u8fd9\u4e0b\u660e\u767d\u4e86\u5427\u3002<\/p>\n

 <\/p>\n

\u76d1\u542cSocket\uff1a\u7528\u4e8e\u76d1\u542c\u5ba2\u6237\u8fde\u63a5\u8bf7\u6c42\uff0c\u5f00\u542f\u6307\u5b9a\u7684\u7aef\u53e3\u8fdb\u5165\u4fa6\u542c\u72b6\u6001\uff0c\u5e76\u8c03\u7528\u4efb\u52a1\u5f15\u64ce\u4e2d\u7684IocpCore\u5bf9\u8c61Bind\u81ea\u5df1\u7684Socket\u53e5\u67c4\u5230\u4efb\u52a1\u5f15\u64ce\u7684IOCP\u53e5\u67c4\uff08\u5b9e\u9645\u5c31\u662f\u8c03\u7528CreateIoCompletionPort\u51fd\u6570\u6765\u5b9e\u73b0\uff09\uff0c\u8fd9\u6837\u76d1\u542cSocket\u5c31\u53ef\u4ee5\u5728\u63a5\u6536\u5230IO\u8bf7\u6c42\u65f6\uff0c\u7531\u5185\u6838\u5c06\u8bf7\u6c42\u52a0\u5165IOCP\u4efb\u52a1\u961f\u5217\uff0c\u5728IOCP\u5f15\u64ce\u7684\u5de5\u4f5c\u7ebf\u7a0b\u4e2d\u5c31\u53ef\u4ee5\u901a\u8fc7GetQueuedCompletionStatus\u51fd\u6570\u6765\u76f4\u63a5\u53d6\u5230\u4efb\u52a1\u8fdb\u884c\u5904\u7406\u4e86\u3002\u8bf7\u6c42\u54cd\u5e94\u3001\u5206\u914d\u5de5\u4f5c\u7ebf\u7a0b\u90fd\u662f\u7531\u4efb\u52a1\u5f15\u64ce\u5b8c\u6210\u7684\u3002<\/p>\n

 <\/p>\n

\u5728\u76d1\u542cSocket\u6536\u5230\u8fde\u63a5\u8bf7\u6c42\u65f6\uff0c\u4f1a\u5bf9Request\u8fdb\u884c\u5fc5\u8981\u7684\u521d\u59cb\u5316\uff08\u5982\u72b6\u6001\u8bbe\u7f6e\u3001\u8bb0\u5f55\u5de5\u4f5c\u5f00\u59cb\u65f6\u95f4\u7b49\uff09\uff0c\u7136\u540e\u8c03\u7528Request\u7684FonResponse\u6216HandleResponse\u3002\u8fd9\u91cc\u4f1a\u4f18\u5148\u8c03\u7528FonResponse\uff0c\u76ee\u7684\u662f\u5982\u679c\u6709\u6307\u5b9a\u5916\u90e8\u7684\u54cd\u5e94\u51fd\u6570\uff0c\u5c31\u5b8c\u5168\u7531\u5916\u90e8\u63a5\u7ba1\uff0c\u8fd9\u6837\u7684\u5c01\u88c5\u589e\u52a0\u4e86\u6574\u4f53\u7684\u7075\u6d3b\u6027\u3002<\/p>\n

 <\/p>\n

\u5728TIocpAcceptExRequest.HandleResponse\u4e2d\uff0c\u4f1a\u8c03\u7528getPeerInfo\u51fd\u6570\u83b7\u53d6\u8fdc\u7a0b\u5ba2\u6237\u7aef\u7684IP\u5730\u5740\u548c\u5f53\u524d\u8fde\u63a5\u901a\u8baf\u7aef\u53e3\uff0c\u518d\u4ea7\u751f\u4e00\u4e2aOnAcceptedEx\u4e8b\u4ef6\u3002\u63a5\u7740\u8c03\u7528Owner\uff08TiocpCustomTcpServer)\u7684DoAcceptExResponse\u65b9\u6cd5\uff0c\u8fd9\u65f6\u5982\u679c\u8bbe\u7f6e\u4e86OnContextAccept\u4e8b\u4ef6\uff0c\u5219\u4f1a\u4ea7\u751f\u6b64\u4e8b\u4ef6\uff0c\u4f60\u53ef\u4ee5\u5728\u8fd9\u4e2a\u4e8b\u4ef6\u4e2d\u786e\u5b9a\u662f\u5426\u63a5\u53d7\u8fde\u63a5\uff0c\u9ed8\u8ba4\u4f1a\u63a5\u53d7\u8fde\u63a5\u3002\u63a5\u53d7\u8fde\u63a5\u540e\uff0c\u6839\u636eKeepAlive\u5f00\u5173\u5224\u65ad\u662f\u5426\u8bbe\u7f6eTCP\u5fc3\u8df3\u3002\u518d\u8c03\u7528IocpCore.Bind\u5c06\u5f53\u524d\u8fde\u63a5\u7684SocketHandle\u7ed1\u5b9a\u5230IOCP\u7aef\u53e3\uff0c\u5982\u679c\u6210\u529f\u4f1a\u8c03\u7528Context\u7684DoConnected\u65b9\u6cd5\uff0c\u5728DoConnected\u91cc\u9762\u4f1a\u4e3a\u5f53\u524d\u8fde\u63a5\u5206\u914d\u4e00\u4e2a\u6807\u8bc6\u53e5\u67c4\uff08\u5b9e\u9645\u4e0a\u662f\u4e00\u4e2a\u8ba1\u6570\u5668\uff09\uff0c\u8bbe\u7f6eActive\u72b6\u6001\u4e3aTrue\uff0c\u6dfb\u52a0\u5230\u5728\u7ebf\u5217\u8868\uff0c\u7136\u540e\u4ea7\u751fOnContextConnected\u4e8b\u4ef6\uff0c\u5e76\u8c03\u7528OnConnected\u65b9\u6cd5\uff08\u4f60\u53ef\u4ee5\u5728\u5b50\u7c7b\u4e2d\u5728\u8fd9\u4e2a\u5730\u65b9\u505a\u989d\u5916\u7684\u5904\u7406\uff09\uff0cContext\u5c06\u72b6\u6001\u8bbe\u7f6e\u4e3a\u8fde\u63a5\u6210\u529f\u72b6\u6001\uff0c\u5e76\u8bf7\u6c42\u63a5\u6536\u6570\u636e\u3002\u5982\u679c\u5728\u5efa\u7acb\u8fde\u63a5\u7684\u8fc7\u7a0b\u4e2d\u53d1\u751f\u4e86\u9519\u8bef\uff0c\u4f1a\u5173\u95ed\u5f53\u524d\u8fde\u63a5\uff0c\u4ea7\u751fOnContextError\u4e8b\u4ef6\u3002<\/p>\n

 <\/p>\n

\u53e6\u5916\uff0c\u5728TiocpCustomTcpServer\u4e2d\u5185\u8bbe\u4e86\u4e00\u4e2a\u8fde\u63a5\u8bf7\u6c42\u7ba1\u7406\u5668IocpAcceptorMgr\uff0c\u5b83\u5185\u90e8\u6709\u4e00\u4e2aTIocpAcceptExRequest\u5bf9\u8c61\u6c60\uff0c\u76ee\u7684\u662f\u4e3a\u4e86\u63d0\u5347\u6027\u80fd\u3002IocpAcceptorMgr\u8fd8\u80fd\u63a7\u5236\u5e76\u53d1\u7684\u6700\u5927\u8bf7\u6c42\u6570\uff0c\u8d85\u8fc7\u4e0a\u9650\u65f6\u4e0d\u518d\u7acb\u5373\u63a5\u53d7\u8fde\u63a5\uff0c\u800c\u662f\u7b49\u5f85\u5bf9\u50cf\u6c60\u6709\u7a7a\u95f2\u7684\u5bf9\u8c61\u65f6\u624d\u8fd4\u56de\u3002\u8fd9\u91cc\u5b9e\u9645\u4e0a\u5c31\u662f\u4e00\u4e2a\u6392\u961f\u6548\u679c\u4e86\u3002<\/p>\n

 <\/p>\n

\u4e09\u3001 \u63a5\u6536\u6570\u636e<\/strong><\/p>\n

 <\/p>\n

\u5728\u7b2c\u4e8c\u9636\u6bb5\uff0c\u8fde\u63a5\u6210\u529f\u540e\u4f1a\u9a6c\u4e0a\u8c03\u7528\u5f53\u524d\u8fde\u63a5\u7684PostWSARecvRequest\u65b9\u6cd5\uff0c\u8bf7\u6c42\u63a5\u53d7\u6570\u636e\u3002\u5728TiocpCustomContext\u4e2d\uff0c\u672c\u8eab\u4f1a\u521d\u59cb\u5316\u4e00\u4e2aTIocpRecvRequest\u5bf9\u8c61\uff0c\u5b83\u7684\u4f5c\u7528\u5c31\u662f\u4ea7\u751f\u4e00\u4e2a\u6570\u636e\u63a5\u6536\u8bf7\u6c42\uff0c\u5e76\u5728\u6536\u5230\u8bf7\u6c42\u65f6\uff0c\u5728HandleResponse\u65b9\u6cd5\u4e2d\u8fdb\u884c\u521d\u6b65\u5904\u7406\u3002<\/p>\n

 <\/p>\n

\u5148\u6765\u770b\u770bPostWSARecvRequest\uff0c\u5b83\u7684\u5b9e\u73b0\u5f88\u7b80\u5355\uff0c\u5c31\u662f\u76f4\u63a5\u53bb\u8c03\u7528TiocpRecvRequest. PostRequest\u3002 PostRequest\u51fd\u6570\u4f1a\u8c03\u7528\u7cfb\u7edfWSARecv\u51fd\u6570\u4ea7\u751f\u4e00\u4e2a\u63a5\u6536\u6570\u636e\u7684\u8bf7\u6c42\u3002\u8fd9\u4e2a\u8bf7\u6c42\u5f53\u7136\u4e5f\u662f\u5f02\u6b65\u7684\u3002\u7531\u4e8eTiocpRecvRequest\u4e5f\u662f\u7ee7\u627f\u4e8eTiocpRequest\uff0c\u6240\u4ee5\u5728\u8c03\u7528WSARecv\u65f6\u4e5f\u901a\u8fc7Foverlapped\u53c2\u6570\u5c06\u81ea\u5df1\u4e0e\u4e00\u6b21IO\u4e8b\u4ef6\u7ed1\u5b9a\u4e86\uff0c\u5728\u4efb\u52a1\u5f15\u64ce\u4e2d\u63a5\u6536\u5230\u6570\u636e\u65f6\uff0c\u4f1a\u81ea\u52a8\u8fdb\u5165TiocpRecvRequest\u7684HandleResponse\u65b9\u6cd5\u3002\u5982\u679cPostRequest\u5931\u8d25\uff0c\u4f1a\u89e6\u53d1OnContextError\u4e8b\u4ef6\u3002<\/p>\n

 <\/p>\n

\u5728TiocpRecvRequest. HandleResponse\u4e2d\uff0c\u5982\u679c\u524d\u9762\u6ca1\u6709\u51fa\u9519\uff0c\u4f1a\u8c03\u7528DoReceiveData\uff0c\u89e6\u53d1Context.OnRecvBuffer\u865a\u65b9\u6cd5\u548cIocpTcpServer\u7684OnDataReceived\u4e8b\u4ef6\uff0c\u5728\u8fd9\u4e24\u4e2a\u5730\u65b9\uff0c\u7528\u6237\u53ef\u4ee5\u5bf9\u6570\u636e\u8fdb\u884c\u5904\u7406\u3002\u7d27\u63a5\u7740\uff0cHandleResponse\u51fd\u6570\u4f1a\u518d\u6b21\u4ea7\u751f\u4e00\u4e2a\u63a5\u6536\u8bf7\u6c42\uff0c\u7528\u4e8e\u63a5\u6536\u65b0\u7684\u6570\u636e\u3002\uff08\u5fc5\u987b\u7684\u54e6\uff0c\u6bd4\u59821G\u7684\u6587\u4ef6\uff0c\u663e\u7136\u4e0d\u80fd\u4e00\u4e2a\u5305\u5c31\u53d1\u9001\u5b8c^_^\uff09<\/p>\n

 <\/p>\n

\u56db\u3001 \u5904\u7406\u6570\u636e<\/strong><\/p>\n

 <\/p>\n

\u6211\u4eec\u5728\u4f7f\u7528TiocpCustomTcpServer\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u6ce8\u518c\u4e00\u4e2a\u88ab\u91cd\u8f7dOnRecvBuffer\u7684Context\u7c7b\u6765\u5904\u7406\u6570\u636e\uff0c\u4e5f\u53ef\u4ee5\u5728OnDataReceived\u4e8b\u4ef6\u4e2d\u5904\u7406\u3002\u6574\u4f53\u6765\u8bf4\u8fd9\u4e2a\u5c01\u88c5\u8fd8\u662f\u5f88\u81ea\u7531\u7684\u3002<\/p>\n

 <\/p>\n

\u4e94\u3001 \u56de\u590d\u6570\u636e<\/strong><\/p>\n

 <\/p>\n

\u5728\u5904\u7406\u6570\u636e\u65f6\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u56de\u590d\u4e00\u4e9b\u4e1c\u897f\u7ed9\u5ba2\u6237\u7aef\u3002\u4ee5\u4f7f\u7528OnDataReceived\u5904\u7406\u6570\u636e\u4e3a\u4f8b\uff0c\u6211\u4eec\u5148\u770b\u770b\u8fd9\u4e2a\u4e8b\u4ef6\u7684\u58f0\u660e\uff1a<\/p>\n

 <\/p>\n

TOnBufferReceived = procedure(Context: TIocpCustomContext; buf: Pointer; len: Cardinal; ErrorCode: Integer) of object;<\/pre>\n
 <\/p>\n
\u5728\u4e8b\u4ef6\u4e2d\uff0c\u6709\u5f53\u524d\u63a5\u6536\u7684\u6570\u636e\u7f13\u51b2\u533a\u5730\u5740\u3001\u957f\u5ea6\uff0c\u8fd8\u6709\u4e00\u4e2aContext\u3002\u6211\u4eec\u8981\u56de\u590d\u6570\u636e\u6216\u662f\u67e5\u770b\u8fdc\u7a0b\u5ba2\u6237\u7aef\u7684IP\u7aef\u53e3\u7b49\u4fe1\u606f\uff0c\u5c31\u9700\u8981\u7528\u5230\u5b83\u3002\u4f7f\u7528Context.Send()\u51fd\u6570\u5c31\u53ef\u4ee5\u53d1\u9001\u6211\u4eec\u7684\u6570\u636e\u4e86\u3002Send\u51fd\u6570\u6709\u51e0\u4e2a\u91cd\u8f7d\u7248\u672c\uff0c\u5176\u4e2d\u6709\u4e00\u4e2a\u91cc\u9762\u5305\u542bBufReleaseType\u53c2\u6570\u7684\uff0c\u662f\u6307\u5b9a\u6b63\u8981\u88ab\u53d1\u9001\u7684\u6570\u636e\u7f13\u51b2\u533a\u91ca\u653e\u65b9\u5f0f\uff0c\u9ed8\u8ba4dtNone\uff0c\u5373\u4e0d\u7ba1\u5b83\u3002\u5982\u679c\u4f7f\u7528dtFreeMem\u548cdtDispose\uff0c\u5219\u5206\u522b\u662f\u8c03\u7528FreeMem\u6216Dispose\u6765\u81ea\u52a8\u91ca\u653e\u7f13\u51b2\u533a\u5185\u5b58\u3002<\/p>\n
 <\/p>\n
Send\u51fd\u6570\u540c\u6837\u4e5f\u662f\u5f02\u6b65\u7684\uff0c\u4f1a\u7acb\u5373\u8fd4\u56de\u3002\u5728\u5185\u90e8\u5b9e\u9645\u4e0a\u662f\u4ea7\u751f\u4e00\u4e2aPostWSASendRequest\u8bf7\u6c42\u3002\u5f53\u7136\u4f60\u4e5f\u53ef\u4ee5\u76f4\u63a5\u8c03\u7528PostWSASendRequest\u8bf7\u6c42\uff0cSend\u53ea\u662f\u4e00\u4e2a\u7b80\u5316\u4f7f\u7528\u7684\u5c01\u88c5\u3002\u5728PostWSASendRequest\u51fd\u6570\u4e2d\uff0c\u9996\u5148\u901a\u8fc7\u8c03\u7528Owner\uff08TIocpTcpServer\uff09.GetSendRequest\u51fd\u6570\u4eceFsendRequestPool\u6c60\u4e2d\u83b7\u53d6\u4e00\u4e2a\u8bf7\u6c42\u5bf9\u8c61\uff0c\u5c06\u6570\u636e\u4e0e\u8fd9\u4e2a\u8bf7\u6c42\u5bf9\u8c61\u7ed1\u5b9a\uff0c\u5373\u8c03\u7528SendRequest. SetBuffer\u51fd\u6570\u6765\u521d\u59cb\u5316\u3002\u5728\u521d\u59cb\u5316\u5b8c\u6210\u540e\uff0c\u5c06\u8fd9\u4e2a\u8bf7\u6c42\u52a0\u5165\u5f85\u53d1\u9001\u961f\u5217\u4e2d\uff0c\u6210\u529f\u540e\u7acb\u5373\u8c03\u7528CheckNextSendRequest\u51fd\u6570\u4e00\u6b21\u3002<\/p>\n
 <\/p>\n
\u4e3a\u4f55\u8981\u8c03\u7528CheckNextSendRequest\uff1f \u5176\u5b9eCheckNextSendRequest\u662f\u4e00\u4e2a\u89e6\u53d1\u51fd\u6570\uff0c\u5b83\u4f1a\u4ece\u961f\u5217\u4e2dPop\u4e00\u4e2a\u53d1\u9001\u8bf7\u6c42\uff0c\u6210\u529f\u540e\u518d\u8c03\u7528TiocpSendRequest. ExecuteSend\u51fd\u6570\uff0c\u5728ExecuteSend\u91cc\u9762\u4f1a\u518d\u6b21\u5224\u65ad\u8981\u53d1\u9001\u7684\u6570\u636e\u957f\u5ea6\u662f\u5426\u4e3a0\uff0c\u7136\u540e\u518d\u901a\u8fc7\u5185\u90e8\u7684InnerPostRequest\u6765\u771f\u6b63\u4ea7\u751f\u4e00\u4e2a\u53d1\u9001IO\u8bf7\u6c42\u3002\u8fd9\u91cc\u9762\u662f\u901a\u8fc7WSASend\u6765\u4ea7\u751fIO\u8bf7\u6c42\u7684\uff0c\u7531\u4e8eTiocpSendRequest\u4e5f\u662f\u57fa\u4e8eTiocpRequest,\u6240\u4ee5WSASend\u65f6\u4f7f\u7528\u7684Foverlapped\u53c2\u6570\u5c31\u5c06\u5bf9\u8c61\u4e0e\u672c\u6b21IO\u4e8b\u4ef6\u7ed1\u5b9a\u4e86\u3002\u5728\u7cfb\u7edf\u5185\u6838\u53d1\u9001\u5b8c\u6570\u636e\u6216\u51fa\u9519\u65f6\uff0c\u4efb\u52a1\u5f15\u64ce\u4f1a\u81ea\u52a8\u8c03\u7528\u8fd9\u4e2a\u8bf7\u6c42\u7684HandleResponse\u65b9\u6cd5\u3002<\/p>\n
 <\/p>\n
\u5728TIocpSendRequest.HandleResponse\u4e2d\uff0c\u5982\u679c\u6570\u636e\u53d1\u9001\u5931\u8d25\u4f1a\u4ea7\u751fOnContextError\u4e8b\u4ef6\uff0c\u6210\u529f\u5219\u8c03\u7528Context\u7684\u865a\u65b9\u6cd5DoSendRequestCompleted\u3002\u7136\u540e\u7acb\u5373\u8c03\u7528Conetext. PostNextSendRequest\u65b9\u6cd5\uff0c\u5904\u7406\u961f\u5217\u4e2d\u7684\u4e0b\u4e00\u4e2a\u53d1\u9001\u8bf7\u6c42\u3002\u4ece\u8fd9\u91cc\u53ef\u4ee5\u770b\u51fa\uff0c\u6211\u4eec\u5728Send\u4e4b\u540e\u8c03\u7528CheckNextSendRequest\u65f6\uff0c\u53ef\u80fd\u5e76\u4e0d\u662f\u5f53\u524d\u6295\u9012\u7684\u5f85\u53d1\u9001\u8bf7\u6c42\u88ab\u54cd\u5e94\u3002\u6211\u4eecSend\u7684\u8bf7\u6c42\u53ef\u80fd\u4f1a\u5728\u524d\u9762\u7684\u8bf7\u6c42HandleResponse\u540e\u624d\u771f\u6b63\u53d1\u9001\u3002<\/p>\n
 <\/p>\n
\u5728Send\u6570\u636e\u65f6\uff0c\u6211\u4eec\u7528\u5230\u4e86\u961f\u5217\uff0c\u5176\u76ee\u7684\u4e00\u662f\u4fdd\u8bc1\u6570\u636e\u7684\u53d1\u9001\u987a\u5e8f\uff0c\u4e8c\u662f\u80fd\u901a\u8fc7\u8bbe\u7f6e\u961f\u5217\u7684\u5927\u5c0f\u6765\u589e\u5f3a\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\uff0c\u4e09\u662f\u6211\u4eec\u968f\u65f6\u80fd\u89c2\u6d4b\u5230\u670d\u52a1\u7684\u72b6\u6001\u3002\u53e6\u5916\u6211\u4eec\u8fd8\u4f7f\u7528\u4e86\u53d1\u9001\u8bf7\u6c42\u5bf9\u8c61\u6c60\uff0c\u7528\u6765\u63d0\u5347\u6027\u80fd\u3002<\/p>\n
 <\/p>\n
\u516d\u3001\u65ad\u5f00\u8fde\u63a5<\/strong><\/p>\n
 <\/p>\n
IOCP\u670d\u52a1\u5728\u4e0e\u5ba2\u6237\u5efa\u7acb\u8fde\u63a5\u540e\uff0c\u5185\u90e8\u53ea\u5728\u53d1\u751f\u9519\u8bef\u6216\u7cfb\u7edf\u9000\u51fa\u7684\u65f6\u5019\u624d\u4e3b\u52a8\u65ad\u5f00\u8fde\u63a5\u3002\u5e73\u5e38\u65f6\u5019\u9ed8\u8ba4\u7531\u5ba2\u6237\u7aef\u6765\u65ad\u5f00\u3002\u5728\u5904\u7406\u6570\u636e\u65f6\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u76f4\u63a5\u8c03\u7528Context. Disconnect\u6765\u65ad\u5f00\u5f53\u524d\u8fde\u63a5\u3002\u5728\u8c03\u7528Disconnect\u65f6\uff0c\u4f1a\u5173\u95ed\u5f53\u524d\u8fde\u63a5\u7684Socket\uff0c\u4ea7\u751fOnContextDisconnected\u4e8b\u4ef6\uff0c\u8c03\u7528Context. OnDisconnected\u865a\u65b9\u6cd5\uff0c\u5e76\u4ece\u5728\u7ebf\u5217\u8868\u4e2d\u5220\u9664\u8fd9\u4e2a\u8fde\u63a5\u3002\u5728\u5220\u9664\u65f6Context\u4f1a\u88ab\u8fd8\u56de\u5230ContextPool\u4e2d\u3002<\/p>\n
 <\/p>\n
\u6211\u4eec\u53ef\u4ee5\u5728OnContextDisconnected\u4e8b\u4ef6\uff0c\u6216\u91cd\u8f7d\u7684Context\u7684OnDisconnected\u65b9\u6cd5\u5bf9\u65ad\u5f00\u8fde\u63a5\u4f5c\u989d\u5916\u7684\u5904\u7406\u3002<\/p>\n
 <\/p>\n
\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u524d\u9762\u7684\u63a5\u53d7\u8fde\u63a5\u3001\u63a5\u6536\u6570\u636e\u3001\u56de\u53d1\u6570\u636e\u7b49\u90fd\u662f\u5f02\u6b65\u7684\uff0c\u53ea\u6709\u65ad\u5f00\u8fde\u63a5\u662f\u7acb\u5373\u7684\u3002<\/p>\n
 <\/p>\n
\u4e03\u3001\u7ed3\u675f\u8bed<\/strong><\/p>\n
 <\/p>\n
\u81f3\u6b64\uff0c\u672c\u6587\u5df2\u7ecf\u5dee\u4e0d\u591a\u7ed3\u675f\u4e86\u3002\u5728\u4e0a\u9762\u6211\u4eec\u5206\u6790\u4e86DIOCP\u6574\u4e2a\u7f51\u7edc\u901a\u8baf\u7684\u8fd0\u4f5c\u6d41\u7a0b\u548c\u57fa\u672c\u4f7f\u7528\u65b9\u6cd5\u3002\u901a\u8fc7\u8fd9\u4e9b\u5206\u6790\uff0c\u4f60\u4f1a\u53d1\u73b0\uff0cDIOCP\u5230\u73b0\u5728\u7684V5\u9636\u6bb5\uff0c\u6574\u4f53\u6d41\u7a0b\u5df2\u7ecf\u5f88\u5408\u7406\u9ad8\u6548\u4e86\uff0c\u81f3\u5c11\u6211\u6682\u65f6\u6ca1\u53d1\u73b0\u660e\u663e\u7684\u6c89\u4f59\u3002\u81f3\u4e8e\u4f18\u5316\u6211\u60f3\u7684\u662f\uff0c\u5728Send\u62f7\u8d1d\u65f6\uff0c\u53ef\u4ee5\u5c06GetMem\u6362\u6210\u73af\u5f62\u5185\u5b58\uff0c\u964d\u4f4e\u5185\u5b58\u788e\u7247\u7684\u4ea7\u751f\u3002<\/p>\n
 <\/p>\n
\u53e6\u5916\uff0c\u672c\u6587\u8bb2\u7684DIOCP\u4e3a\u81ea\u5df1\u4fee\u6539\u540e\u7684\u7248\u672c\uff0c\u5df2\u7ecf\u5c06\u539f\u6765diocp-v5\u4e2d\u7684diocp.sockets.pas\u548cdiocp.tcp.server\u3001diocp.tcp.client\u5408\u5e76\uff0c\u90e8\u5206\u7c7b\u540d\u6709\u4e9b\u7ec6\u5c0f\u7684\u6539\u53d8\u3002\u5c06\u5728\u7ebf\u5217\u8868\u3001HashTable\u6362\u6210\u4e86\u6211\u81ea\u5df1\u7684TYXDHashMapLinkTable\uff0c\u5b83\u662f\u4e00\u4e2a\u5c06HashTable\u548c\u53cc\u5411\u94fe\u8868\u7efc\u5408\u8d77\u6765\u7684\u602a\u7269\uff0c\u4e2a\u4eba\u611f\u89c9\u8fd8\u662f\u6bd4\u8f83\u597d\u7528\u7684\u3002<\/p>\n
 <\/p>\n
\u672c\u6587\u53ea\u662f\u6211\u4e2a\u4eba\u7684\u4e00\u4e9b\u521d\u6b65\u7406\u89e3\uff0c\u5fc5\u7ade\u624d\u5b66\u4e60Diocp\u4e09\u5929\uff08\u4e09\u5929\u6253\u9c7c\u4e24\u5929\u6652\u7f51 \uff1a\uff08 \uff09\uff0c\u5f88\u53ef\u80fd\u5b58\u5728\u4e00\u4e9b\u9519\u8bef\uff0c\u6b22\u8fce\u5927\u5bb6\u6307\u6b63\u3002<\/p>\n
 <\/p>\n
\u6700\u540e\u611f\u8c22\u5f26\u5f26\u54e5\uff0c\u80fd\u5c06\u8fd9\u4e48\u597d\u7684\u4e1c\u897f\u5949\u732e\u7ed9\u5927\u5bb6\uff0c\u771f\u662f\u8f9b\u82e6\u4e86\u3002<\/p>\n
\u6709\u5174\u8da3\u4e86\u89e3\u66f4\u591aDIOCP\u7684\u540c\u5b66\u8fd8\u53ef\u4ee5\u76f4\u63a5\u8bbf\u95ee\u5b83\u7684\u5b98\u65b9\u7f51\u7ad9\uff1a www.diocp.org<\/p>\n
\u4e5f\u53ef\u4ee5\u76f4\u63a5\u52a0\u5165QQ\u7fa4\uff1a\u00a0320641073<\/p>\n
 <\/p>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
\u6765\u81ea\u7f51\u53cb\u5929\u5730\u5f26\u7684DIOCP\u65e9\u5df2\u7ecf\u5e7f\u4e3a\u4eba\u77e5 […]<\/p>\n","protected":false},"author":3,"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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[8],"tags":[346],"class_list":["post-2362","post","type-post","status-publish","format-standard","hentry","category-delphi","tag-diocp"],"views":8702,"_links":{"self":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/2362","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2362"}],"version-history":[{"count":3,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/2362\/revisions"}],"predecessor-version":[{"id":2365,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/2362\/revisions\/2365"}],"wp:attachment":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2362"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2362"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2362"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}