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<TD align=right><A href="http://www.csdn.net/">CSDN</A> - <A
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<TD align=middle bgColor=#003399 height=10><FONT
color=#ffffff>標題</FONT></TD>
<TD><B> 一個驗證連接超時的類CSock</B> 7nightlove（翻譯）
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<TD align=middle bgColor=#003399><FONT color=#ffffff>關(guān)鍵字</FONT></TD>
<TD width=500> 連接超時</TD></TR>
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<TD align=middle bgColor=#003399 height=10><FONT
color=#ffffff>出處</FONT></TD>
<TD height=10> <A
href="http://www.codeguru.com/Cpp/I-N/internet/network/">http://www.codeguru.com/Cpp/I-N/internet/network/</A></TD></TR>
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<P>在用CSocket類進行網(wǎng)絡通信時，我們會遇到驗證連接超時的問題，CSocket在斷開socket連接時不返回固定的時間，這樣就降低了程序性能。下面介紹的這個類解決了這個問題。<BR>
只要輸入超時的時間，程序就會返回這個時間值。<BR>
CSock類重載了CSocket類的成員函數(shù)ConnectHelper。</P>
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src="CSDN_文檔中心_一個驗證連接超時的類CSock.files/CSDN_Dev_Image_2004-4-121730540.gif"></P>
<P><BR>/// CSocket modify - timeout module.<BR>BOOL
CSock::ConnectHelper(const SOCKADDR* lpSockAddr, int
nSockAddrLen)<BR>{<BR>if (m_pbBlocking !=
NULL)<BR>{<BR>WSASetLastError(WSAEINPROGRESS);<BR>return
FALSE;<BR>}<BR><BR>m_nConnectError = -1;<BR><BR>if
(!CAsyncSocket::ConnectHelper(lpSockAddr, nSockAddrLen))<BR>{<BR>if
(GetLastError() == WSAEWOULDBLOCK)<BR>{<BR>// Insert....<BR>CTime
curt, st;<BR>CTimeSpan span(0, 0, 0, m_nTimeOut);<BR><BR>st =
CTime().GetCurrentTime();<BR>//.......<BR>while
(PumpMessages(FD_CONNECT))<BR>{<BR>if (m_nConnectError !=
-1)<BR>{<BR>WSASetLastError(m_nConnectError);<BR>return
(m_nConnectError == 0);<BR>}<BR>// Insert....<BR>curt =
CTime().GetCurrentTime();<BR>if(curt > (st+span))<BR>return
FALSE;<BR>//..............<BR>}<BR>}<BR>return FALSE;<BR>}<BR>m_Kill
= FALSE;<BR>return
TRUE;<BR>}<BR><BR></P><BR></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE><BR>
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