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Handling Multiple Pending Socket Read and Write Operations

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17 Aug 2002CPOL13 min read 695K   8.8K   153  
This article explains the potential problems with having multiple pending recvs calls on a single socket.
// ServerShutdownDlg.h : header file
//

#if !defined(AFX_SERVERSHUTDOWNDLG_H__66169577_AD59_49B9_9CE0_D46B08D16814__INCLUDED_)
#define AFX_SERVERSHUTDOWNDLG_H__66169577_AD59_49B9_9CE0_D46B08D16814__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include "JetByteTools\Win32Tools\ManualResetEvent.h"

/////////////////////////////////////////////////////////////////////////////
// CServerShutdownDlg dialog

class CServerShutdownDlg : public CDialog
{
// Construction
public:
	CServerShutdownDlg(CWnd* pParent = NULL);	// standard constructor

// Dialog Data
	//{{AFX_DATA(CServerShutdownDlg)
	enum { IDD = IDD_SERVERSHUTDOWN_DIALOG };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CServerShutdownDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);	// DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	HICON m_hIcon;

	// Generated message map functions
	//{{AFX_MSG(CServerShutdownDlg)
	virtual BOOL OnInitDialog();
	afx_msg void OnPaint();
	afx_msg HCURSOR OnQueryDragIcon();
	afx_msg void OnShutdown();
	afx_msg void OnPauseResume();
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()

private :

   JetByteTools::Win32::CManualResetEvent m_shutdownEvent;
   JetByteTools::Win32::CManualResetEvent m_pauseResumeEvent;

};

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_SERVERSHUTDOWNDLG_H__66169577_AD59_49B9_9CE0_D46B08D16814__INCLUDED_)

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Software Developer (Senior) JetByte Limited
United Kingdom United Kingdom
Len has been programming for over 30 years, having first started with a Sinclair ZX-80. Now he runs his own consulting company, JetByte Limited and has a technical blog here.

JetByte provides contract programming and consultancy services. We can provide experience in COM, Corba, C++, Windows NT and UNIX. Our speciality is the design and implementation of systems but we are happy to work with you throughout the entire project life-cycle. We are happy to quote for fixed price work, or, if required, can work for an hourly rate.

We are based in London, England, but, thanks to the Internet, we can work 'virtually' anywhere...

Please note that many of the articles here may have updated code available on Len's blog and that the IOCP socket server framework is also available in a licensed, much improved and fully supported version, see here for details.

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