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				|  |  | +#!/usr/bin/env ruby
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				|  |  | +# Copyright 2015, Google Inc.
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				|  |  | +# All rights reserved.
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				|  |  | +#
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				|  |  | +# Redistribution and use in source and binary forms, with or without
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				|  |  | +# modification, are permitted provided that the following conditions are
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				|  |  | +# met:
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				|  |  | +#
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				|  |  | +#     * Redistributions of source code must retain the above copyright
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				|  |  | +# notice, this list of conditions and the following disclaimer.
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				|  |  | +#     * Redistributions in binary form must reproduce the above
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				|  |  | +# copyright notice, this list of conditions and the following disclaimer
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				|  |  | +# in the documentation and/or other materials provided with the
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				|  |  | +# distribution.
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				|  |  | +#     * Neither the name of Google Inc. nor the names of its
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				|  |  | +# contributors may be used to endorse or promote products derived from
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				|  |  | +# this software without specific prior written permission.
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				|  |  | +#
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				|  |  | +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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				|  |  | +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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				|  |  | +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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				|  |  | +# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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				|  |  | +# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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				|  |  | +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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				|  |  | +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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				|  |  | +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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				|  |  | +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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				|  |  | +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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				|  |  | +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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				|  |  | +
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				|  |  | +# Sample gRPC server that implements the EchoWithoutProtobuf service.
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				|  |  | +#
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				|  |  | +# Usage: $ path/to/echo_server.rb
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				|  |  | +
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				|  |  | +this_dir = File.expand_path(File.dirname(__FILE__))
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				|  |  | +$LOAD_PATH.unshift(this_dir) unless $LOAD_PATH.include?(this_dir)
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				|  |  | +
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				|  |  | +require 'grpc'
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				|  |  | +require 'echo_services_noprotobuf'
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				|  |  | +
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				|  |  | +# EchoServer is simple server that implements the EchoWithoutProtobuf server.
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				|  |  | +class EchoServer < EchoWithoutProtobuf::Service
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				|  |  | +  # echo implements the EchoWithoutProtobuf 'Echo' rpc method.
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				|  |  | +  def echo(echo_req, _unused_call)
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				|  |  | +    echo_req
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				|  |  | +  end
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				|  |  | +end
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				|  |  | +
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				|  |  | +# main starts an RpcServer that receives requests to EchoWithoutProtobuf at the sample
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				|  |  | +# server port.
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				|  |  | +def main
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				|  |  | +  s = GRPC::RpcServer.new
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				|  |  | +  s.add_http2_port('0.0.0.0:50051', :this_port_is_insecure)
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				|  |  | +  s.handle(EchoServer)
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				|  |  | +  s.run_till_terminated
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				|  |  | +end
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				|  |  | +
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				|  |  | +main
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