Firebase Cloud functions: ECONNREFUSED

Question

I am trying the Optimizing Networking of firebase cloud functions like here with Typescript

const http = require('http');
const functions = require('firebase-functions');
const agent = new http.Agent({keepAlive: true});

export const getXXX = functions.https.onRequest((request, response) => {
    const req = http.request({
        host: 'localhost',
        port: 443,
        path: '',
        method: 'GET',
        agent: agent,
    }, res => {
        let rawData = '';
        res.setEncoding('utf8');
        res.on('data', chunk => { rawData += chunk; });
        res.on('end', () => {
            response.status(200).send(`Data: ${rawData}`);
        });
    });
    req.on('error', e => {
        response.status(500).send(`Error: ${e.message}`);
    });
    req.end();
});

but I keep getting

error: connect ECONNREFUSED 127.0.0.1:443

I am not very familiar with TypeScript and js so please help me.
Another question when is res.on 'Data' gets triggered ?

Shouldn't you be trying to access an external service instead of localhost on 443 (TLS)? — evilSnobu, Jun 20 '18 at 18:50

score 1 · Answer 1 · answered Jun 20 '18 at 19:27

1

Turns out I need to be on a paid plan in order to make external HTTP requests from inside my function.

answered Jun 20 '18 at 19:27

wkh

35
1
4

That's what I was saying in my answer about being on the Blaze plan. – Doug Stevenson Jun 20 '18 at 19:49

score 0 · Accepted Answer · answered Jun 20 '18 at 18:53

0

You can't access anything on "localhost" (127.0.0.1) in Cloud Functions. I suspect that you meant to put a different host in there, and ensure that your project is on the Blaze plan to enable outgoing connections to services not fully controlled by Google.

answered Jun 20 '18 at 18:53

Doug Stevenson

297,357
32
422
441

Please review the answer below https://stackoverflow.com/a/56627026/4782247 – imbatman Jun 17 '19 at 07:57
Is this also true for accessing localhost from a localhost cloud function? i.e. in the local emulator suite, can I access local cloud storage data from a locally-running cloud function? – artoonie Mar 31 '22 at 17:20

score 0 · Answer 3 · answered Jun 17 '19 at 07:57

You can run Cloud Functions on localhost. All you need to do is run a local emulator of the Cloud services. Which Google has provided! It's a really awesome tool and a great setup!

Follow these steps for the Firebase tool suite: https://firebase.google.com/docs/functions/local-emulator

Follow these steps for the Cloud tool suite: https://cloud.google.com/functions/docs/emulator

They are pretty much similar.

You do not need Blaze plan, you can use the "pay as you go" plan, which includes the free tier quota. "Free usage from Spark plan included*" https://firebase.google.com/pricing

Firebase Cloud functions: ECONNREFUSED

3 Answers3

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