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#define MAXBUF 1024
/************¹ØÓÚ±¾Îĵµ********************************************
*filename: async-server.c
*purpose: ÑÝÊ¾ÍøÂçÒ첽ͨѶ£¬ÕâÊÇ·þÎñÆ÷¶Ë³ÌÐò
*wrote by: zhoulifa(zhoulifa@163.com) ÖÜÁ¢·¢(http://zhoulifa.bokee.com)
Linux°®ºÃÕß Linux֪ʶ´«²¥Õß SOHO×å ¿ª·¢Õß ×îÉó¤CÓïÑÔ
*date time:2007-01-25 21:22
*Note: ÈκÎÈË¿ÉÒÔÈÎÒâ¸´ÖÆ´úÂë²¢ÔËÓÃÕâЩÎĵµ£¬µ±È»°üÀ¨ÄãµÄÉÌÒµÓÃ;
* µ«Çë×ñÑ­GPL
*Thanks to: Google.com
*Hope:Ï£ÍûÔ½À´Ô½¶àµÄÈ˹±Ï××Ô¼ºµÄÁ¦Á¿£¬Îª¿ÆÑ§¼¼Êõ·¢Õ¹³öÁ¦
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int main(int argc, char **argv)
{
    int sockfd, new_fd;
    socklen_t len;
    struct sockaddr_in my_addr, their_addr;
    unsigned int myport, lisnum;
    char buf[MAXBUF + 1];
    fd_set rfds;
    struct timeval tv;
    int retval, maxfd = -1;
    if (argv[1])
        myport = atoi(argv[1]);
    else
        myport = 7838;
    if (argv[2])
        lisnum = atoi(argv[2]);
    else
        lisnum = 2;
    if ((sockfd = socket(PF_INET, SOCK_STR


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