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ÈçÌâ: ³öÏÖÁË´óÁ¿µÄtimewait,
ÓÃÕâÖÖ·½·¨»¹ÊÇ´æÔÚ:
linger m_sLinger;
    m_sLinger.l_onoff = 1;  // ÔÚclosesocket()µ÷ÓÃ,µ«ÊÇ»¹ÓÐÊý¾Ýû·¢ËÍÍê±ÏµÄʱºòÈÝÐí¶ºÁô
    m_sLinger.l_linger = 0; // ÈÝÐí¶ºÁôµÄʱ¼äΪ0Ãë

    setsockopt(sd,
        SOL_SOCKET,
        SO_LINGER,
        &m_sLinger,
        sizeof(m_sLinger));
    setsockopt(sd, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(reuse));


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