::Socket.getsockname returns string instead of struct sockaddr
--------------------------------------------------------------

                 Key: JRUBY-5232
                 URL: http://jira.codehaus.org/browse/JRUBY-5232
             Project: JRuby
          Issue Type: Bug
    Affects Versions: JRuby 1.5.5, JRuby 1.5.3
            Reporter: James Lee
            Assignee: Thomas E Enebo


Before calling Socket#bind, it returns a packed sockaddr, but afterward it's a 
string.


The following IRB session illustrates the issue:

jruby-1.5.5 > server = ::Socket.new( ::Socket::AF_INET, ::Socket::SOCK_STREAM, 
0 )
 => #<Socket:0x6fa8bd74> 
jruby-1.5.5 > server.getsockname                                                
  
 => "\002\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000" 
jruby-1.5.5 > server.bind( ::Socket.sockaddr_in( 0, "127.0.0.1") )              
  
 => 0 
jruby-1.5.5 > server.getsockname                                  
 => "/127.0.0.1:44603" 
jruby-1.5.5 > ::Socket.unpack_sockaddr_in( server.getsockname )
ArgumentError: can't resolve socket address of wrong type
        from (irb):14



Note that the above works as expected in MRI and YARV.

Possibly related to this bug: http://jira.codehaus.org/browse/JRUBY-3563



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