getaddrinfo错误：不支持ai_socktype

Question

我正在写一个告诉域名ip地址的代码。以下代码工作正常。

MERGE

当我尝试使用void *来存储struct sockaddr_in sin_addr或struct sockaddr_in6 sin6_addr时，我收到了以下错误。 “getaddrinfo错误：不支持ai_socktype”

代码如下

#include  <stdio.h>
#include  <stdlib.h>
#include  <sys/socket.h>
#include  <sys/types.h> 
#include  <netdb.h>
#include  <string.h>
#include  <arpa/inet.h>

#define     SUCCESS 0
#define     FAILURE -1

int main(int argc, char *argv[])
{
if(argc != 2) {
    printf("./a.out <domain>\n");
    return FAILURE;
}
struct addrinfo src,*res,*var;
struct sockaddr_in *ipv4;
struct sockaddr_in6 *ipv6;
char ipstr[INET6_ADDRSTRLEN];
int status;
src.ai_family=AF_UNSPEC;
src.ai_socktype=SOCK_STREAM;
src.ai_flags=AI_PASSIVE;
if((status = getaddrinfo(argv[1],NULL,&src,&res))!=0) {
    fprintf(stderr,"getaddrinfo error:%s\n",gai_strerror(status));
    exit(1);
}
for(var = res;var != NULL;var = var->ai_next) {
    if(var->ai_family == AF_INET) {
        ipv4 = (struct sockaddr_in *) var->ai_addr;
        inet_ntop(var->ai_family,&(ipv4->sin_addr),ipstr,INET6_ADDRSTRLEN);
    }
    else {
        ipv6 = (struct sockaddr_in6 *) var->ai_addr;
        inet_ntop(var->ai_family,&(ipv6->sin6_addr),ipstr,INET6_ADDRSTRLEN);
    }
    printf("IP address:%s\n",ipstr);
}
freeaddrinfo(res);
freeaddrinfo(var);
return SUCCESS;
}

我是套接字编程的初学者。请帮我解决这个问题。