grpc-client-server-tls.ts

import { ChannelCredentials } from '@grpc/grpc-js';
import * as fs from 'fs';
import * as path from 'path';

import { TLSServiceClient } from './generated/proto/tls_service';

function getChannelCredentials(): ChannelCredentials {
  const rootCert = fs.readFileSync(path.resolve(__dirname, '../certs/ca-cert.pem'));
  
  // If you use CA root certificate
  // const channelCredentials = ChannelCredentials.createSsl();

  // If you use Self-Signed root certificate you need to provide it
  const channelCredentials = ChannelCredentials.createSsl(rootCert);

  return channelCredentials;
}

function main() {
  const credentials = getChannelCredentials();

  const client = new TLSServiceClient('0.0.0.0:4000', credentials);

  client.unary({ id: 'test' }, (error, response) => {
    // eslint-disable-next-line no-console
    console.log('response: ', response);
  });
}

main();