text: # Copyright 2020 Google LLC
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #      http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  import argparse
  
  import grpc
  
  import greet_pb2
  import greet_pb2_grpc
  
  
  def run(target):
      with grpc.insecure_channel(target) as channel:
          stub = greet_pb2_grpc.GreeterStub(channel)
          response = stub.SayHello(greet_pb2.HelloRequest(name='GreeterClient'))
          print(f'Greeting: {response.message}')
  
  
  def get_target(server, port):
      prefix = 'http://'
      server = server[len(prefix):] if server.startswith(prefix) else server
      return f'{server}:{port}'
  
  
  if __name__ == '__main__':
      parser = argparse.ArgumentParser()
      parser.add_argument('-s', '--server', type=str, default='localhost')
      parser.add_argument('-p', '--port', type=int, default=50051)
      args = parser.parse_args()
      run(get_target(args.server, args.port))
  