/*********************************************************************************
 *      Copyright:  (C) 2018 ligang<2820724771@qq.com>
 *                  All rights reserved.
 *
 *       Filename:  socket_server.c
 *    Description:  This file 
 *                 
 *        Version:  1.0.0(03/16/2018)
 *         Author:  ligang <2820724771@qq.com>
 *      ChangeLog:  1, Release initial version on "03/16/2018 10:24:16 PM"
 *                 
 ********************************************************************************/

#include<stdio.h>
#include<string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include<errno.h>
#include <netinet/in.h>
#include <arpa/inet.h>

int main(int argc,char **argv)
{
    int sock_fd,new_fd;
    int yes=1;
    struct sockaddr_in serv_addr;
    char buf[1024];

    sock_fd = socket(AF_INET,SOCK_STREAM,0);
    if(sock_fd < 0)
    {
        printf("create socket is failure %s",strerror(errno));
        return -1;
    }

    printf("create socket fd [%d]\n",sock_fd);
    
    if (setsockopt(sock_fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int)) == -1)
    {
        perror("setsockopt");
        return -1;
    }

    serv_addr.sin_family = AF_INET;
    serv_addr.sin_port = htons(8555);
    serv_addr.sin_addr.s_addr = inet_addr("192.168.0.5");
    memset(serv_addr.sin_zero, '\0', sizeof(serv_addr.sin_zero));

	printf("begin to bind\n");
	
    if(bind(sock_fd,(const struct sockaddr *)&serv_addr,sizeof(serv_addr))<0)
    {

        printf("bind is failure %s \n",strerror(errno));
        return -2;
    }

	printf("begin to listen\n");
    listen(sock_fd,13);

    while(1)
    {
        printf("begin to accepting!\n");
        new_fd = accept(sock_fd,NULL,NULL);
        if(new_fd<0)
        {
            printf("accept is failure %s\n",strerror(errno));
            return -2;
        }
        memset(buf,0,sizeof(buf));
        printf("begin to read\n");
        read(new_fd,buf,sizeof(buf));
        printf("%s\n",buf);

        write(new_fd,"welcome",7);
        sleep(1);
        close(new_fd);
    
    }

    close(sock_fd);
    return 0;
}