NodeJS AWS SDK for JavaScript v2 SNS: publishing a message from your local laptop when behind your corporate firewall

EventPublisher.js

// I was getting this error when publishing sns from my local laptop:
// arn:aws:sns:ap-southeast-2:396497070286:int-afl-sns-topic
// Inaccessible host: `sns.ap-southeast-2.amazonaws.com'.
// This service may not be available in the `ap-southeast-2' region.",
// "code":"UnknownEndpoint",
// "region":"ap-southeast-2",
// "hostname":"sns.ap-southeast-2.amazonaws.com"
// getaddrinfo ENOTFOUND sns.ap-southeast-2.amazonaws.com

// This is the solution

import AWS from 'aws-sdk'
import { SNS } from 'aws-sdk'

const proxy = require('proxy-agent')

const sns = new AWS.SNS({
  apiVersion: '2010-03-31',
  region: 'ap-southeast-2',
  httpOptions: { agent: proxy('http://myAbcCompanyInternal.proxy.com') },
})

const snsTopicArn = 'arn:aws:sns:ap-southeast-2:XXXYYY:dev-myApp-sns-topic'

const publishEvent = async (message) => {
  const params = {
    TopicArn: snsTopicArn,
    Message: JSON.stringify(message),
  }

  try {
    const snsResponse = await sns.publish(params).promise()
    console.debug(`My SNS Response: ${JSON.stringify(snsResponse)}`)
  } catch (e) {
    console.error(`My SNS exception: Error publishing message to SNS topic: ${snsTopicArn}`, e)
    throw e
  }
}

// This solution didn't work for me:

const sns = new AWS.SNS({ apiVersion: '2010-03-31' })

AWS.config.update({
  region: 'ap-southeast-2',
  httpOptions: {
    agent: proxy('http://myAbcCompanyInternal.proxy.com'),
  },
})

// Credits:
// https://github.com/aws/aws-sdk-js/issues/2053

/////////////////////////////////////////
// This solution would have worked as well. Just put AWS.config.update(...) before new AWS.SNS(...)
AWS.config.update({
  region: 'ap-southeast-2',
  httpOptions: {
    agent: proxy('http://myAbcCompanyInternal.proxy.com'),
  },
})

const sns = new AWS.SNS({ apiVersion: '2010-03-31' })