mirror of https://github.com/grpc/grpc-node.git
65 lines
1.9 KiB
JavaScript
65 lines
1.9 KiB
JavaScript
/*
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*
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* Copyright 2023 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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*
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*/
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const grpc = require('@grpc/grpc-js');
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const protoLoader = require('@grpc/proto-loader');
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const parseArgs = require('minimist');
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const PROTO_PATH = __dirname + '/../protos/echo.proto';
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const packageDefinition = protoLoader.loadSync(
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PROTO_PATH,
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{keepCase: true,
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longs: String,
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enums: String,
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defaults: true,
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oneofs: true
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});
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const echoProto = grpc.loadPackageDefinition(packageDefinition).grpc.examples.echo;
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function main() {
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let argv = parseArgs(process.argv.slice(2), {
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string: 'target',
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default: {target: 'localhost:50052'}
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});
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const client = new echoProto.Echo(argv.target, grpc.credentials.createInsecure());
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const call = client.bidirectionalStreamingEcho();
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const EXPECTED_MESSAGES = 2;
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let receivedMessages = 0;
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call.on('data', value => {
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console.log(`received message "${value.message}"`)
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receivedMessages += 1;
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if (receivedMessages >= EXPECTED_MESSAGES) {
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console.log('cancelling call');
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call.cancel();
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}
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});
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call.on('status', statusObject => {
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console.log(`received call status with code ${grpc.status[statusObject.code]}`);
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});
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call.on('error', error => {
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console.log(`received error ${error}`);
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})
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console.log('sending message "hello"');
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call.write({message: 'hello'});
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console.log('sending message "world"')
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call.write({message: 'world'});
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}
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main();
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