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diff --git a/sample/drb/drbs.rb b/sample/drb/drbs.rb
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+=begin
+ distributed Ruby --- dRuby Sample Server
+ Copyright (c) 1999-2000,2002 Masatoshi SEKI
+=end
+
+=begin
+ How to play.
+
+ Terminal 1
+ | % ruby drbs.rb
+ | druby://yourhost:7640
+
+ Terminal 2
+ | % ruby drbc.rb druby://yourhost:7640
+ | "hello"
+ | ....
+
+=end
+
+require 'drb/drb'
+
+class DRbEx
+ include DRbUndumped
+
+ def initialize
+ @hello = 'hello'
+ end
+
+ def hello
+ cntxt = Thread.current['DRb']
+ if cntxt
+ p cntxt['server'].uri
+ p cntxt['client'].peeraddr
+ end
+ Foo::Unknown.new
+ end
+
+ def err
+ raise FooError
+ end
+
+ def sample(a, b, c)
+ a.to_i + b.to_i + c.to_i
+ end
+end
+
+class Foo
+ class Unknown
+ end
+end
+
+class FooError < RuntimeError
+end
+
+if __FILE__ == $0
+ DRb.start_service(ARGV.shift || 'druby://:7640', DRbEx.new)
+ puts DRb.uri
+ Thread.new do
+ sleep 10
+ DRb.stop_service
+ end
+ DRb.thread.join
+end
+