Re: [libuv] determine client ipv4 or ipv6
using second AF_INETXx seems more robust approach, thank you.
On 9/19/16, Ben Noordhuis wrote:
> On Mon, Sep 19, 2016 at 4:46 AM, kang joni wrote:
>> how to check if client is connected using ipv4 or ipv6 in libuv?
>> I have this code,
>>
>> struct sockaddr_storage cp;
>> int ilen=sizeof(cp);
>> uv_tcp_getpeername((uv_tcp_t*)client, (struct sockaddr*)&cp,&ilen);
>> int ret=uv_ip6_name((const struct
>> sockaddr_in6*)&cp,(char*)ipname,sizeof(ipname));
>> //I don't think this is correct, but I haven't any clues
>> if (retip<0 || std::string("::")==ipname)
>> {
>> retip=uv_ip4_name((const struct sockaddr_in*)&cp,(char*)ipname,
>> sizeof(ipname));
>>
>> }
>>
>> any corrections ? thanks
>
> You can simply check if ilen == sizeof(struct sockaddr_in) or ilen ==
> sizeof(struct sockaddr_in6) but a more thorough solution is to check
> the address family:
>
> struct sockaddr *sa = (struct sockaddr *) &cp;
> switch (sa->sa_family) {
> case AF_INET: /* ... */; break;
> case AF_INET6: /* ... */; break;
> }
>
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Re: [libuv] determine client ipv4 or ipv6
On Mon, Sep 19, 2016 at 4:46 AM, kang joni wrote:
> how to check if client is connected using ipv4 or ipv6 in libuv?
> I have this code,
>
> struct sockaddr_storage cp;
> int ilen=sizeof(cp);
> uv_tcp_getpeername((uv_tcp_t*)client, (struct sockaddr*)&cp,&ilen);
> int ret=uv_ip6_name((const struct
> sockaddr_in6*)&cp,(char*)ipname,sizeof(ipname));
> //I don't think this is correct, but I haven't any clues
> if (retip<0 || std::string("::")==ipname)
> {
> retip=uv_ip4_name((const struct sockaddr_in*)&cp,(char*)ipname,
> sizeof(ipname));
>
> }
>
> any corrections ? thanks
You can simply check if ilen == sizeof(struct sockaddr_in) or ilen ==
sizeof(struct sockaddr_in6) but a more thorough solution is to check
the address family:
struct sockaddr *sa = (struct sockaddr *) &cp;
switch (sa->sa_family) {
case AF_INET: /* ... */; break;
case AF_INET6: /* ... */; break;
}
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[libuv] determine client ipv4 or ipv6
how to check if client is connected using ipv4 or ipv6 in libuv?
I have this code,
struct sockaddr_storage cp;
int ilen=sizeof(cp);
uv_tcp_getpeername((uv_tcp_t*)client, (struct sockaddr*)&cp,&ilen);
int ret=uv_ip6_name((const struct
sockaddr_in6*)&cp,(char*)ipname,sizeof(ipname));
//I don't think this is correct, but I haven't any clues
if (retip<0 || std::string("::")==ipname)
{
retip=uv_ip4_name((const struct sockaddr_in*)&cp,(char*)ipname,
sizeof(ipname));
}
any corrections ? thanks
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