使用WSASend后导致GetQueuedCompletionStatus多次返回

[yangyanzhao]

errorInfo CIOCPModel::Send(PER_IO_CONTEXT* pIoContext, SOCKET socket, char* strBuff, int offset, int length){
	errorInfo back;
	int result = -1;
	int temp = strlen((char*)strBuff);
	int err = 0;
	WSABUF DataBuf;
	DWORD SendBytes, Flags;
	char buffer[1024];

	DataBuf.len = length;
	DataBuf.buf = strBuff;
	pIoContext->m_Overlapped.hEvent = WSACreateEvent();
	result = WSASend(socket, &DataBuf,1, &SendBytes, 0, &pIoContext->m_Overlapped, NULL);
	DWORD a = GetLastError();

	//result = send(socket, (const char*)(char*)strBuff, strlen((char*)strBuff) + 1, 0);
	if (result < 0){
		if (WSAGetLastError() != ERROR_IO_PENDING)
		{
			DWORD a = WSAGetLastError();
			str.Format("WSASend failed!,errorcode=%d\n", WSAGetLastError());
			logFile.write(str, str.GetLength());
			//printf("WSASend() failed with error %d\n", WSAGetLastError());
		}
		back.errorCode = WSAGetLastError();
		back.errorStr = "send error";
	}
	else{
		back.errorCode = 0;
	}
	_PostSend(pIoContext);
	return back;

发送后，GetQueuedCompletionStatus多次返回，除第一个消息是正确的外，其他都为空，不知道是什么原因

[oyljerry]

http://blog.csdn.net/smartfox80/article/details/41823101

[zgl7903]

1 WSACreateEvent 应该有配对的 WSACloseEvent 2 (WSAGetLastError() == ERROR_IO_PENDING) 时 建议 WSAGetOverlappedResult

[yangyanzhao]

PER_IO_CONTEXT* pNewIOContext = pSocketContext->GetNewIoContext(); pNewIOContext->m_OpType = RECV_POSTED; pNewIOContext->m_sockAccept = pIoContext->m_sockAccept; memcpy(pNewIOContext->m_szBuffer, pIoContext->m_szBuffer, MAX_BUFFER_LEN); switch( pIoContext->m_OpType ) { // Accept case ACCEPT_POSTED: { // 为了增加代码可读性，这里用专门的_DoAccept函数进行处理连入请求 pIOCPModel->_DoAccept( pSocketContext, pIoContext ); } break; // RECV case RECV_POSTED: { // 为了增加代码可读性，这里用专门的_DoRecv函数进行处理接收请求 //pIOCPModel->_DoRecv( pSocketContext,pIoContext ); pIOCPModel->_DoRecv(pSocketContext, pNewIOContext); } break; 我新建了PER_IO_CONTEXT结构，但问题似乎并没有解决

[yangyanzhao]

PER_IO_CONTEXT* pNewIoContext = pSocketContext->GetNewIoContext(); pNewIoContext->m_OpType = RECV_POSTED; pNewIoContext->m_sockAccept = pSocketContext->m_Socket; pNewIoContext->m_Overlapped = pIoContext->m_Overlapped; if (strcmp(pIoContext->m_szBuffer, "register") == 0){ this->_ShowMessage(_T("message from %s port %d:%s\n"), inet_ntoa(ClientAddr->sin_addr), ntohs(ClientAddr->sin_port), pNewIoContext->m_szBuffer); //printf("message from %s port %d:%s\n", inet_ntoa(ClientAddr->sin_addr), ntohs(ClientAddr->sin_port), pNewIoContext->m_szBuffer); str.Format("message from %s port %d:%s\n", inet_ntoa(ClientAddr->sin_addr), ntohs(ClientAddr->sin_port), pNewIoContext->m_szBuffer); logFile.write(str, str.GetLength()); sprintf(pThis->pThis->sendBuf, "registered :%d:", index2); pThis->pThis->registered[index2] = true; pThis->pThis->m_bHeart[index2] = true; pThis->pThis->Send(pNewIoContext, pNewIoContext->m_sockAccept, pThis->pThis->sendBuf, 0, strlen(pThis->pThis->sendBuf) + 1); } 这是我调用SEND的地方

[亚细亚]

我也遇到同样的问题，不知哪里出了问题？