linuxÏÂIP v6 tcp¿Í»§¶ËÔ´ÂëʾÀý

/***********************************
*
*client.c
*
**********************************/

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

#define MAXSIZE 1024
//**************main()**************
int main(int argc,char *argv[])
{
int sockfd;
int n;
char recv_buf[MAXSIZE+1];
char send_buf[MAXSIZE+1];
struct timeval tv;
fd_set readfd;

// ²ÎÊýÅжÏ
if ( argc != 3 )
{
printf("USAGE: %s [serv_address][serv_port]\n", argv[0]);
exit(1);
}

// ´´½¨IPV6Ð͵Äsocket
if ( (sockfd = socket(PF_INET6, SOCK_STREAM, 0)) < 0 )
{
perror("socket");
exit(1);
}

// ת»»·þÎñÆ÷IPµØÖ·
struct sockaddr_in6 serv_addr;
bzero(&serv_addr,sizeof(serv_addr));
serv_addr.sin6_family = AF_INET6;
serv_addr.sin6_port = htons( atoi(argv[2]) );
if ( inet_pton(AF_INET6, argv[1], &serv_addr.sin6_addr ) < 0 )
{
perror(argv[1]);
exit(1);
}

// Óë·þÎñÆ÷½¨Á¢Á¬½Ó
if ( connect(sockfd,(struct sockaddr *)&serv_addr,sizeof(serv_addr) ) < 0 )
{
perror("connect");
exit(1);
}
printf("Connected to server\n");
while (1)
{
//----------set last time---------
tv.tv_sec=600;
tv.tv_usec=0;

FD_ZERO(&readfd);
// ½«±ê×¼ÊäÈëºÍÓë·þÎñÁ¬½ÓµÄÎļþ¾ä±ú¶Áʼþ¼ÓÈëSET
FD_SET(0,&readfd);
FD_SET(sockfd,&readfd);

// ¼ì²éÊÇ·ñÓÐ