Simple Function
exports.sendMessage = functions.https.onRequest((req, res) => { const name = req.query.name res.send(`Hello ${name}!`)})JSON Request and Respond
exports.sendMessage = functions.https.onRequest((req, res) => { const name = req.body.name res.json({ message: `Hello ${name}!` })})CORS
const cors = require('cors')({origin: true})exports.sendMessage = functions.https.onRequest((req, res) => { return cors(req, res, () => { const name = req.body.name res.json({ message: `Hello ${name}!` }) })})NOTE: Alternative CORS setup via Express.
Compatible with Firebase Functions
If your client is using Firebase Functions
onRequest
exports.sendMessage = functions.https.onRequest((req, res) => { const name = req.body.data.name res.json({ data: { message: `Hello ${name}!` } })})onCall
exports.sendMessage = functions.https.onCall(async (data, context) => { const name = data.name return { text: `Hello ${name}!` }})Authenticated User
exports.sendMessage = functions.https.onCall(async (data, context) => { if (!context.auth) { throw new functions.https.HttpsError("unauthenticated", "Request had invalid credentials.") // throw new functions.https.HttpsError('failed-precondition', 'Credentials are missing') } const name = data.name return { text: `Hello ${namel}!`, user: { uid: context.auth.uid, email: context.auth.token.email, name: context.auth.token.name } }})NOTE: Refer HttpsError and FunctionsErrorCode
Validation
exports.sendMessage = functions.https.onCall(async (data, context) => { const name = data.name if (!name) { throw new functions.https.HttpsError('invalid-argument', 'Name is required') } return { text: `Hello ${namel}!` }})References: