Connecting to Data Connect emulator raises an SSL error

[aalej]

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[REQUIRED] Step 2: Describe your environment

• Operating System version: 14.7.2
• Firebase SDK version: Firebase Admin v13.1.0
• Firebase Product: Data Connect
• Node.js version: v22.13.1
• NPM version: v10.9.2

[REQUIRED] Step 3: Describe the problem

While connected to the emulator, trying to perform a query using Data Connect raises an SSL error. The docs mentions using export DATA_CONNECT_EMULATOR_HOST="127.0.0.1:8080" to connect to the emulator.

1. Looking at https://github.com/firebase/firebase-tools/blob/2bfb61bde9fd5a247f323aad2ebcf567a73666f9/src/emulator/constants.ts#L17, the default port of the Data Connect emulator is 9399, so I think we should be using export DATA_CONNECT_EMULATOR_HOST="127.0.0.1:9399"

2. Internally, in the Admin SDK, I think we should automatically format the URL to include/start with http:// similar to Auth

Steps to reproduce:

What happened? How can we make the problem occur?
This could be a description, log/console output, etc.

MCVE and steps to repro in https://github.com/aalej/firebase-admin-2852

Relevant Code:

import { initializeApp } from "firebase-admin/app";
import { getDataConnect } from 'firebase-admin/data-connect';

// From https://firebase.google.com/docs/data-connect/admin-sdk#use_the_sdk_with_the_emulator but changed 8080 to 9399
process.env.DATA_CONNECT_EMULATOR_HOST = "127.0.0.1:9399"

initializeApp({
    projectId: "demo-project",
    credential: {
        getAccessToken: () => Promise.resolve({ access_token: "fake-access-token", "expires_in": 3600 })
    }
})

const dataConnect = getDataConnect({
    serviceId: "test-dc-2",
    location: "us-central1"
})

async function main() {
    const query = "query ListMovies { movies { id } }";
    const gqlResponse = await dataConnect.executeGraphql(query);
    console.log(JSON.stringify(gqlResponse))
}

main()

Tools Issue: firebase/firebase-tools#8180

[lahirumaramba]

Hey @aalej thank you for the repro, I really appreciate it. I have a PR pending to fix this issue. Stay tuned.