1# Copyright 2017 gRPC authors. 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6# 7# http://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12# See the License for the specific language governing permissions and 13# limitations under the License. 14"""The Python implementation of the GRPC helloworld.Greeter client.""" 15 16from __future__ import print_function 17 18import grpc 19 20import helloworld_pb2 21import helloworld_pb2_grpc 22import header_manipulator_client_interceptor 23 24 25def run(): 26 header_adder_interceptor = header_manipulator_client_interceptor.header_adder_interceptor( 27 'one-time-password', '42') 28 # NOTE(gRPC Python Team): .close() is possible on a channel and should be 29 # used in circumstances in which the with statement does not fit the needs 30 # of the code. 31 with grpc.insecure_channel('localhost:50051') as channel: 32 intercept_channel = grpc.intercept_channel(channel, 33 header_adder_interceptor) 34 stub = helloworld_pb2_grpc.GreeterStub(intercept_channel) 35 response = stub.SayHello(helloworld_pb2.HelloRequest(name='you')) 36 print("Greeter client received: " + response.message) 37 38 39if __name__ == '__main__': 40 run() 41