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Firebase cloud functions: POST method with bus boy blocked by CORS


Firebase cloud functions: POST method with bus boy blocked by CORS

By : Stephen Blackburn
Date : October 16 2020, 08:10 PM
wish of those help Finally found the answer.. content type should be "multipart/form-data" not "application/x-www-form-urlencoded" when posting from react.
code :


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Enabling CORS in Cloud Functions for Firebase

Enabling CORS in Cloud Functions for Firebase


By : Arohi Sharma
Date : March 29 2020, 07:55 AM
will be helpful for those in need There are two sample functions provided by the Firebase team that demonstrate the use of CORS:
Time server with date formatting HTTPS endpoint requiring Authentication
code :
const cors = require('cors')({origin: true});
Firebase Cloud Functions: Cors examples don't work

Firebase Cloud Functions: Cors examples don't work


By : user2917868
Date : March 29 2020, 07:55 AM
hop of those help? I'm trying to call a simple helloWorld firebase cloud function from my local web app. The logs in Firebase return a status code 200 when I call the function but I face CORS issues. I have already implemented CORS solution steps suggested by Firebase (see index.js code below) but this does not work in my case. Is there anything else I can try to solve this issue? , Use mode: cors instead of mode: no-cors on the fetch.
Client side CORS error with cloud functions and Firebase

Client side CORS error with cloud functions and Firebase


By : user3214104
Date : March 29 2020, 07:55 AM
should help you out I was able to fix with updating my index.js code to include a list of allowed origins.
code :
const functions = require("firebase-functions")
const express = require("express")
const app = express()
const cors = require("cors")({ origin: true })


var allowedOrigins = ["https://domainone", "https://domaintwo"]
app.use(
  cors({
    origin: function(origin, callback) {
      if (!origin) return callback(null, true)
      if (allowedOrigins.indexOf(origin) === -1) {
        var msg = "The CORS policy for this site does not " + "allow access from the specified Origin."
        return callback(new Error(msg), false)
      }
      return callback(null, true)
    }
  })
)

const studio = require("./http/studio.js")
app.post("/api/admin/studio", studio.add)
exports.app = functions.https.onRequest(app)

Firebase Cloud Functions: Requests from referer <empty> are blocked. - PERMISSION_DENIED

Firebase Cloud Functions: Requests from referer <empty> are blocked. - PERMISSION_DENIED


By : user3537372
Date : March 29 2020, 07:55 AM
wish helps you Because you are invoking your function from a node.js environment, the HTTP Header Referer isn't being set. When you create requests through a browser, the browser will automatically fill this field for you.
You can get a suitable referrer value using:
code :
"https://" + process.env.GCLOUD_PROJECT + ".cloudfunctions.net/createJobDynamicLink"
// becomes "https://your-project-id.cloudfunctions.net/createJobDynamicLink"
const options = {
        method: 'POST',
        uri: `https://firebasedynamiclinks.googleapis.com/v1/shortLinks?key=${dynamic_links_key}`,
        body: {
            "longDynamicLink": makeDynamicLongLink(job)
        },
        headers: {
            "Referer": "https://" + process.env.GCLOUD_PROJECT + ".cloudfunctions.net/createJobDynamicLink"
        },
        json: true
    };
How Firebase Cloud functions handle HTTP post method?

How Firebase Cloud functions handle HTTP post method?


By : Dr Shambango
Date : March 29 2020, 07:55 AM
it should still fix some issue Functions built on Firebase can also use Express.js routers for handling GET/POST/PUT/DELETE, etc... is fully supported by Google, and is the recommended way to implement these types of functions.
More documentation can be found here:
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