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ÎÊÌ⣺select()º¯Êý²»Æð×÷Ó㬳ÌÐò²»»áÔÚselectµÄµØ·½×èÈûÒ»Ã룬²¢ÇÒµ±ÍøÂçÉÏÓÐÊý¾ÝµÄʱºò£¬selectµÄ·µ»ØÖµÈÔȻСÓÚ0
    #include <sys/types.h>
    #include <sys/socket.h>
    #include <sys/select.h>
    #include <arpa/inet.h>
    #include <netinet/in.h>
    #include <pthread.h>   
    #include <cstring>
    #include <cstdlib>
    #include <iostream>
    #include <time.h>

int main()
{
    struct sockaddr_in server_sockaddr,client_sockaddr;
    int sin_size,recvBytes;
    int sockfd,client_fd;
    char buf[256];
    sin_size = sizeof(struct sockaddr);
    sockfd = socket(AF_INET,SOCK_STREAM,0);

    server_sockaddr.sin_family = AF_INET;
    server_sockaddr.sin_port = htons(1504);
    server_sockaddr.sin_addr.s_addr = INADDR_ANY;

    bzero(&(server_sockaddr.sin_zero),8);
    fd_set readfds;

    if( -1 == bind(sockfd,(struct sockaddr*)&server_sockaddr,sizeof(struct sockaddr)))
    {
     


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