On Mon, 15 Dec 2025 13:54:49 GMT, Matthias Baesken <[email protected]> wrote:
>> src/java.base/unix/native/libnet/net_util_md.c line 288:
>>
>>> 286: if (family != java_net_InetAddress_IPv4) {
>>> 287: if (ipv6av) {
>>> 288: JNU_ThrowByName(env, JNU_JAVANETPKG "SocketException",
>>> "Protocol family ipv6, ipv6 on machine available");
>>
>> This exception does not really make sense. Are you really sure it's possible
>> to get here?
>
> Looks like to get into the else case starting at line 284 or before the patch
> like 282 , ipv6_available() / ipv6av can be false ; or also the second part
> of the if check can be false
>
> !(family == java_net_InetAddress_IPv4 && v4MappedAddress == JNI_FALSE))
>
> so we should distinguish the 2 cases. Not sure if this really happens, on our
> system showing the error we got the other one `Caused by:
> java.net.SocketException: Protocol family ipv6, ipv6 on machine unavailable`
Or just write the old message `"Protocol family unavailable" ` for this case
and enhance the else case ?
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PR Review Comment: https://git.openjdk.org/jdk/pull/28825#discussion_r2619583618
