RFR 8216417: cleanup of IPv6 scope-id handling

[Daniel Fuchs]

Hi Michael,

AbstractPlainDatagramSocketImpl.java:

in `send` maybe the packet should only be recreated if the address
is different.

best regards,

-- daniel

On 10/06/2019 15:18, Michael McMahon wrote:
> Hi,
> 
> Could I get the following change to net/nio reviewed please?
> 
> It is a general cleanup of IPv6 scope_id handling which removes
> a lot of native code trickery (mostly in Linux) and simplifies the handling
> of scope_ids such that:
> 
> a) when binding/connecting/sending to a link-local address on the same 
> machine,
>     it is allowed to use addresses without a scope_id. In this case, we 
> check local NetworkInterfaces
>     for the correct scope_id to use.
> 
> b) when connecting/sending to a remote link-local address, then a 
> scope_id must be specified
>      at all times.
> 
> Scope_ids should be handled consistently between net and NIO and across 
> all platforms now.
> 
> http://cr.openjdk.java.net/~michaelm/8216417/webrev.2/index.html
> 
> Thanks,
> Michael