/************************************************************
Copyright (C), 2017, Leon, All Rights Reserved.
FileName: server_v6.c
Description: IPV6网络编程练习
Author: Leon
Version: 1.0
Date: 2017-2-9 11:09:39
Function:
History:
<author>    <time>  <version>   <description>
 Leon
************************************************************/#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>#define BUF_LEN 2048
#define PORT 10023int main(int argc, char *argv[])
{int serv_sock = -1, client_sock = -1;socklen_t addr_len = 0;struct sockaddr_in6 local_addr = {0}, client_addr = {0};char buf[BUF_LEN] = {0};int err = -1;/* 建立socket */serv_sock = socket(PF_INET6, SOCK_STREAM, 0);if(-1 == serv_sock){perror("socket error: ");return -1;}/* 填充地址结构 */local_addr.sin6_family = AF_INET6;local_addr.sin6_port = htons(PORT);local_addr.sin6_addr = in6addr_any;/* 绑定地址 */err = bind(serv_sock, (struct sockaddr *)&local_addr, sizeof(struct sockaddr_in6));if(-1 == err){perror("bind error: ");close(serv_sock);return -1;}/* 监听 */err = listen(serv_sock, 5);if(-1 == err){perror("listen error: ");close(serv_sock);return -1;}/* 循环等待客户连接请求 */while(1){memset(&client_addr, 0x0, sizeof(client_addr));addr_len = sizeof(struct sockaddr_in6);client_sock = accept(serv_sock, (struct sockaddr *)&client_addr, &addr_len);if(-1 == client_sock){perror("accept error:");close(serv_sock);return -1;}/* 转换client地址为字符串并打印 */inet_ntop(AF_INET6, &client_addr.sin6_addr, buf, BUF_LEN);printf("A clinet connected, ip: %s, port %d\n", buf, ntohs(client_addr.sin6_port));/* 接收消息 */memset(buf, 0x0, BUF_LEN);err = recv(client_sock, buf, BUF_LEN, 0);if(err < 0){perror("recv error:");close(serv_sock);close(client_sock);return -1;}printf("recv %d bytes: %s\n", err, buf);/* 回送消息 */err = send(client_sock, buf, strlen(buf), 0);if(err < 0){perror("send error:");close(serv_sock);close(client_sock);return -1;}/* 关闭这个client连接 */close(client_sock);}return 0;
}

/************************************************************
Copyright (C), 2017, Leon, All Rights Reserved.
FileName: client_v6.c
Description: IPV6网络编程练习
Author: Leon
Version: 1.0
Date: 2017-2-9 11:09:39
Function:
History:
<author>    <time>  <version>   <description>
 Leon
************************************************************/// connect时地址长度填错，一直报这个错 connect error:: Invalid argument#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>#define BUF_LEN 2048
#define PORT 10023int main(int argc, char *argv[])
{int sock = -1;socklen_t addr_len = 0;struct sockaddr_in6 serv_addr = {0};char buf[BUF_LEN] = {0};int err = -1;/* 建立socket */sock = socket(AF_INET6, SOCK_STREAM, 0);if(-1 == sock){perror("socket error: ");return -1;}memset(&serv_addr, 0x0, sizeof(serv_addr));/* 填充地址结构 */serv_addr.sin6_family = AF_INET6;serv_addr.sin6_port = htons(PORT);serv_addr.sin6_addr = in6addr_loopback;    /* 连接到环回地址 */// 不能connect到链路本地地址// inet_pton(AF_INET6, "fe80::20c:29ff:fe8f:c168", &serv_addr.sin6_addr);addr_len = sizeof(serv_addr);err = connect(sock, (struct sockaddr *)&serv_addr, addr_len);if(-1 == err){perror("connect error:");close(sock);return -1;}/* 发送消息 */memset(buf, 0x0, BUF_LEN);snprintf(buf, BUF_LEN - 1, "hello server, I'm client\n");err = send(sock, buf, strlen(buf), 0);if(err < 0){perror("send error:");close(sock);return -1;}/* 接收消息 */memset(buf, 0x0, BUF_LEN);err = recv(sock, buf, BUF_LEN, 0);if(err < 0){perror("recv error:");close(sock);return -1;}printf("recv %d bytes: %s\n", err, buf);close(sock);return 0;
}