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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
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49 lines
1.5 KiB
49 lines
1.5 KiB
# Copyright 2018 The gRPC Authors |
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# |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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"""Example gRPC server that gets/sets metadata (HTTP2 headers)""" |
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from __future__ import print_function |
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from concurrent import futures |
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import logging |
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import grpc |
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import helloworld_pb2 |
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import helloworld_pb2_grpc |
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class Greeter(helloworld_pb2_grpc.GreeterServicer): |
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def SayHello(self, request, context): |
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for key, value in context.invocation_metadata(): |
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print('Received initial metadata: key=%s value=%s' % (key, value)) |
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context.set_trailing_metadata(( |
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('checksum-bin', b'I agree'), |
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('retry', 'false'), |
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)) |
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return helloworld_pb2.HelloReply(message='Hello, %s!' % request.name) |
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def serve(): |
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server = grpc.server(futures.ThreadPoolExecutor(max_workers=10)) |
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helloworld_pb2_grpc.add_GreeterServicer_to_server(Greeter(), server) |
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server.add_insecure_port('[::]:50051') |
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server.start() |
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server.wait_for_termination() |
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if __name__ == '__main__': |
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logging.basicConfig() |
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serve()
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