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📄 csdn_文档中心_多路复用i-o模型支持多client的实现及效率讨论.htm

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            </SPAN><SPAN 
            style="mso-tab-count: 2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>closesocket(clientsockarray[nIndex]);</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN><SPAN 
            style="mso-tab-count: 2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>clientsockarray[nIndex] = INVALID_SOCKET;</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><FONT 
            size=2><SPAN lang=EN-US><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN><SPAN 
            style="mso-tab-count: 2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>continue;<SPAN 
            style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>// </SPAN><SPAN 
            style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">继续处理套接字句柄数组中的其它套接字</SPAN></FONT></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN><SPAN 
            style="mso-tab-count: 2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>}</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><FONT 
            size=2><SPAN lang=EN-US><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN><SPAN 
            style="mso-tab-count: 2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>// </SPAN><SPAN 
            style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">将接受到的数据进行处理</SPAN><SPAN 
            lang=EN-US>,</SPAN><SPAN 
            style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">此处只将其输出</SPAN></FONT></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>printf("%s\n", buff);</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>}</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>}</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2>&nbsp;<?xml:namespace prefix = o ns = 
            "urn:schemas-microsoft-com:office:office" 
            /><o:p></o:p></FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><FONT 
            size=2><SPAN lang=EN-US><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>// </SPAN><SPAN 
            style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">初始化套接字集合</SPAN></FONT></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>FD_ZERO(&amp;readfds);</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>FD_SET(listensock, &amp;readfds);</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><FONT 
            size=2><SPAN lang=EN-US><SPAN 
            style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            &nbsp;</SPAN>// </SPAN><SPAN 
            style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">将所有有效的套接字句柄加入到套接字句柄数组中</SPAN></FONT></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>for (nIndex = 0; nIndex &lt; FD_SETSIZE - 1; 
            nIndex++)</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>{</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 84pt; mso-char-indent-count: 8.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2>if (clientsockarray[nIndex] != 
            INVALID_SOCKET)</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>FD_SET(clientsockarray[nIndex], 
            &amp;readfds);</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN 
            style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>}</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2>}</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2>&nbsp;<o:p></o:p></FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2>BOOL InsertSock(SOCKET* pSock,<SPAN 
            style="mso-spacerun: yes">&nbsp; </SPAN>SOCKET 
            sock)</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2>{</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN 
            style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>for&nbsp;&nbsp; (int &nbsp;nIndex &nbsp;= &nbsp;0; 
            &nbsp;nIndex&nbsp; &lt;&nbsp; FD_SETSIZE – 1;&nbsp; 
            nIndex++)</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN 
            style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>{<BR><SPAN 
            style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            &nbsp;</SPAN>if<SPAN style="mso-spacerun: yes">&nbsp; 
            &nbsp;</SPAN>(pSock[nIndex] &nbsp;= =&nbsp; 
            INVALID_SOCKET)</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN 
            style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>{</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN 
            style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            &nbsp;</SPAN>pSock[nIndex] = sock;</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN 
            style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN>break;</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN style="mso-spacerun: yes">&nbsp; 
            </SPAN><SPAN 
            style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>}</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN 
            style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>}</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2>&nbsp;<o:p></o:p></FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN 
            style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>if&nbsp;&nbsp; (nIndex = = FD_SETSIZE – 1)</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN 
            style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </SPAN>return FALSE;</FONT></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><SPAN style="mso-spacerun: yes"><FONT 
            size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT></SPAN></SPAN></P>
            <P class=MsoNormal 
            style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0; mso-char-indent-size: 10.5pt"><SPAN 
            lang=EN-US><FONT size=2><SPAN 
            style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
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