diff --git a/logstash/fake-logstash-agent.rb b/logstash/fake-logstash-agent.rb
new file mode 100644
index 0000000..7cb5911
--- /dev/null
+++ b/logstash/fake-logstash-agent.rb
@@ -0,0 +1,17 @@
+# vim:fileencoding=utf-8
+
+require 'socket'
+
+
+def main
+  server = TCPServer.new(55784)
+  loop do
+    client = server.accept
+    $stderr.puts client.gets
+  end
+end
+
+
+if __FILE__ == $0
+  main
+end