ipv6实现udp编程示例

#include <iostream>
#include <WinSock2.h>
#include <ws2tcpip.h>

#pragma comment(lib, "ws2_32.lib")

int main(int argc, char** argv)
{
using namespace std;

cout<<"Server Start…"<<endl;

WORD wVersion = 0;
WSADATA wsaData;
memset(&wsaData, 0, sizeof(wsaData));
wVersion = MAKEWORD(2, 2);

if (0 != WSAStartup(wVersion, &wsaData))
{
return -1;
}

if (2 != LOBYTE(wsaData.wVersion) || 2 != HIBYTE(wsaData.wVersion))
{
WSACleanup();
return -1;
}

struct addrinfo hints;
struct addrinfo* res = NULL;
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_DGRAM;
hints.ai_protocol = IPPROTO_UDP;
hints.ai_flags = AI_PASSIVE;

if (0 != getaddrinfo("192.168.0.19", "6677", &hints, &res))
{
WSACleanup();
return -1;
}

SOCKET sk = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
bind(sk, res->ai_addr, res->ai_addrlen);

char recvBuf[1024] = {'\\0'};
int lenRecv = 0;

struct sockaddr_storage storage;
int len = sizeof(storage);
memset(&storage, 0, len);

lenRecv = recvfrom(sk, recvBuf, 1024, 0, (struct sockaddr*)&storage, &len);
cout<<"Recv From Client:"<<recvBuf<<" Len:"<<lenRecv<<endl;
sendto(sk, recvBuf, lenRecv, 0, (struct sockaddr*)&storage, len);

WSACleanup();
closesocket(sk);

return 0;
}

UdpClient.cpp