Socket.gethostname ignores encoding settings #2558
Description
tested on windows but also happens on macosx. I can't make Socket.gethostname return a UTF-8 string even when fiddling with Encoding.default_internal and external settings.
Example:
C:\Users\Jsvd>irb
io/console not supported; tty will not be manipulated
irb(main):001:0> puts ''.encoding; require 'socket'; puts Socket.gethostname.encoding
Windows-1252
Windows-1252
=> nil
irb(main):002:0>
C:\Users\Jsvd>irb -EUTF-8
io/console not supported; tty will not be manipulated
irb(main):001:0> puts ''.encoding; require 'socket'; puts Socket.gethostname.encoding
UTF-8
Windows-1252
=> nil
irb(main):002:0>
C:\Users\Jsvd>jruby -v
jruby 1.7.17 (1.9.3p392) 2014-12-09 fafd1a7 on Java HotSpot(TM) 64-Bit Server VM 1.8.0_31-b13 +jit [Windows 7-amd64]