Hello Everybody,
http://cr.openjdk.java.net/~dsamersoff/JDK-8250630/webrev.02/
Webrev is updated, all comments accepted and addressed.
Except:
> The error code from the inet_pton is not checked.
inet_pton performs conversion of the constant value in our case and the
only possible reason for it to fail is that the system doesn't support
IPv6 at all.
-Dmitry
On 18.08.2020 3:20, [email protected] wrote:
Hi Dmitry,
I agree with Alex, it is better to rename compareIPv6Addr to
isEqualIPv6Addr.
705 static int compareIPv6Addr(struct addrinfo *ai, struct in6_addr in6Addr)
706 {
707
708 if (ai->ai_addr->sa_family == AF_INET6) {
709 const struct sockaddr_in6 sa = *((struct sockaddr_in6*) ai->ai_addr);
710 return (memcmp(&sa.sin6_addr, &in6Addr, sizeof(in6Addr)) == 0);
711 }
712
713 return 0;
714 }
I think, the lines 707 and 712 are not needed.
725 struct in6_addr mappedAny; ... 761 inet_pton(AF_INET6,
"::ffff:0.0.0.0", &mappedAny);
The error code from the inet_pton is not checked.
Also, it can be useful to pre-initialize the mappedAny.
737 // Try to find bind address of preferred address familty first A dot
at the end of comment is missed.
745 if (listenAddr == NULL) {
746 // No address of preferred addres family found, grab the first one
747 listenAddr = &(addrInfo[0]);
748 }
The indent has to be 4, not 3.
The () brackets are not actually needed but I do not object if you keep
them.
A dot at the end of comment is missed.
755 // Binding to IN6ADDR_ANY allow us to serve both IPv4 and IPv6
connections,
756 // but binding to mapped INADDR_ANY (::ffff:0.0.0.0) allow us to
serve IPv4
757 // connections only. So make sure, that IN6ADDR_ANY is preferred over
758 // mapped INADDR_ANY if preferredAddressFamily is AF_INET6 or not set
I'd suggest to replace "allow us" => "allows" in two places:
"IN6ADDR_ANY allow us" and "(::ffff:0.0.0.0) allow us".
Also, it'd better to replace: "So make sure,that" => "Make sure that".
A dot at the end of comment is missed.
I don't know the network protocols well enough to comment on
Thanks,
Serguei
On 8/17/20 00:21, Dmitry Samersoff wrote:
Hello Everybody,
Please review the fix:
https://cr.openjdk.java.net/~dsamersoff/JDK-8250630/webrev.01/
Binding to IN6ADDR_ANY allow us to serve both IPv4 and IPv6
connections, but binding to mapped INADDR_ANY (::ffff:0.0.0.0) allow
us to serve IPv4 connections only.
So make sure, that IN6ADDR_ANY is preferred over mapped INADDR_ANY if
preferredAddressFamily is not AF_INET
-Dmitry\S
