Dne 23. 07. 19 v 17:46 Alan Bateman napsal(a):
On 22/07/2019 09:16, František Kučera wrote:
It is a stream or a datagram socket – just from different domain
(UNIX instead of INET or INET6) – but they work the same way. So yes,
when I create a stream or datagram unix domain socket e.g. in systemd
(parent process), I can inherit it in Java and get
ServerSocketChannel or DatagramChannel from System.inheritedChannel()
and it really works. Recently, I wrote an article about it:
https://blog.frantovo.cz/c/372/ – it is in Czech, but code and config
examples should be readable to anyone.
:
BTW: the inheritedChannel() JavaDoc says:
> In addition to the network-oriented channels described, this method
may return other kinds of channels in the future.
Yes, we added this method in Java SE 5 with a view to supporting other
channel types (e.g. console) in the future.
I'll get back to you on the other points soon but I was curious about
your observation that the inheritedChannel returns a channels with
"garbage" local/remote addresses when fd 0 is a Unix domain socket.
The bug is that the probe is missing a call to getsockname that it
needs to check if the family is AF_INET or AF_INET6. So we should
minimally fix that.
-Alan
Hello,
can anyone tell me how to continue? I can change the code (the patch was
only proof-of-concept, fast hack) or change the design (e.g. creating a
new module instead of patching existing classes) but before I spend more
time with this task, I need to know, whether there is interest to have
AF_UNIX (AF_LOCAL) support in the OpenJDK (see the first e-mail in this
thread for what I mean by "support").
Franta
