基于ipv6的socket通信(TCP)

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一服务器端

#include <winsock2.h>

#include <ws2tcpip.h>

#include <iostream.h>

#include "tpipv6.h"

// 所需库连接

#pragma comment (lib,"Ws2_32.lib")

void main()

{

WSADATA wsaData; //版本协商

if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0)

{

cout<<"装载socket失败!"<<endl;

return ;

}

SOCKET server_sock, client_sock; //服务器端和客户端套接字

//addrinfo结构体是为了消除IPv6协议与IPv4协议之间的差异，编制统一的程序而追加的结构。并且允许多个IPv4地址或IPv6地址链成链表

struct addrinfo server_addr , //服务器端地址信息

*res=NULL; //若有多个地址，res是地址信息链表指针

memset(&server_addr,0,sizeof(server_addr));//如果没有这句话就会出现绑定错误,也就是在调用getaddrinfo()之前该参数必须清0

server_addr.ai_family = AF_INET6; //地址簇,这里指定是ipv6协议,其值可以是 AF_INET:ipv4, AF_INET6:ipv6

server_addr.ai_socktype = SOCK_STREAM; //套接字类型,这里是流式,其值可以是 SOCK_STREAM:流式, SOCK_DGRAM:数据报, SOCK_RAW:原始套接字

server_addr.ai_protocol = IPPROTO_TCP; //传输层协议,这里是TCP协议,其值可以是: IPPROTO_TCP:TCP, IPPROTO_UDP:UDP, 若为0系统根据套接字类型自动选择

int result;

result = getaddrinfo("3ffe:3600:21:3000::1", "2000", &server_addr, &res); //解析本机地址, 服务器地址监听端口

if(result != 0)//地址解析正确时返回0

{

cout<<"服务器地址解析错误!"<<endl;

return ;

}

server_sock = socket(res->ai_family,res->ai_socktype,res->ai_protocol); //创建服务器端socket

if(server_sock == INVALID_SOCKET)

{

cout<<"创建服务器socket失败!"<<endl;

return ;

}

if(bind(server_sock, res->ai_addr, res->ai_addrlen) == SOCKET_ERROR) //绑定

{

cout<<"服务器端绑定失败!"<<endl;

return ;

}

if( listen(server_sock ,2) == SOCKET_ERROR ) //监听

{

cout<<"服务器端监听失败!"<<endl;

return;

}

// struct sockaddr_in6 client_addr; //客户端地址

struct sockaddr_storage client_addr; //结构体sockaddr_storage有足够大的空间来存储任何类型的sockaddr

int clientaddr_len = sizeof(client_addr); //客户端地址长度

while(1)

{

client_sock = accept(server_sock,(struct sockaddr*)&client_addr,&clientaddr_len);//接受客户端连接

if(client_sock == INVALID_SOCKET)

{

cout<<"接受客户端连接失败!"<<endl;

continue; //继续

}

// cout<<"连接来自:"<<inet_pton(client_addr.sin6_addr)<<endl;

char buf[256];//发送和接收缓冲区

int nRecv=0;

while(1)

{

cout<<"服务器端请输入:";

cin>>buf;

send(client_sock,buf,256,0);

nRecv = recv(client_sock,buf,256,0);

if(nRecv>0)

{

buf[nRecv]='/0';

cout<<"服务器收到:"<<buf<<endl;

}

closesocket(server_sock);//关闭服务器端套接字

closesocket(client_sock);//关闭客户端套接字

}

二客户端

#include <winsock2.h>

#include <ws2tcpip.h>

#include <iostream.h>

#include "tpipv6.h"

// 所需库连接

#pragma comment (lib,"Ws2_32.lib")

void main()

{

WSADATA wsaData;

if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0)

{

cout<<"装载socket失败!"<<endl;

return ;

}

SOCKET client_sock; //客户端本地套接字

struct addrinfo server_addr, *addrinfo=NULL; //服务器端地址

memset(&server_addr,0,sizeof(server_addr));//在getaddrinfo()之前必须清0

server_addr.ai_family = AF_INET6; //指定是ipv6协议

server_addr.ai_socktype = SOCK_STREAM; //流式

server_addr.ai_protocol = IPPROTO_TCP; //TCP协议,也可以是0，让系统自己选

int result;

result = getaddrinfo("3ffe:3600:21:3000::1","2000",&server_addr,&addrinfo); //服务器端ipv6地址, 服务器监听的端口

if(result !=0)//地址解析正确时返回0

{

cout<<"客户端解析服务器地址失败!"<<endl;

return;

}

client_sock = socket(addrinfo->ai_family,addrinfo->ai_socktype,addrinfo->ai_protocol); //创建客户端套接字

if(client_sock == INVALID_SOCKET)

{

cout<<"创建客户端socket失败!"<<endl;

return;

}

if( connect(client_sock,addrinfo->ai_addr,addrinfo->ai_addrlen) == SOCKET_ERROR) //连接服务器

{

cout<<"连接服务器出错!"<<endl;

return;

}

char buf[256]; //发送和接收缓冲区

int nRecv=0;

while(1)

{

nRecv=recv(client_sock,buf,256,0);

if(nRecv>0)

{

buf[nRecv]='/0';

cout<<"客户端收到:"<<buf<<endl;

}

cout<<"客户端请输入:";

cin>>buf;

send(client_sock,buf,256,0);

}

closesocket(client_sock); //关闭客户端套接字

}