cors | Node.js CORS middleware | Runtime Evironment library
kandi X-RAY | cors Summary
kandi X-RAY | cors Summary
CORS is a node.js package for providing a Connect/Express middleware that can be used to enable CORS with various options.
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Top functions reviewed by kandi - BETA
- Wraps the CORS middleware .
- Configure the origin header for the request .
- CORS middleware .
- Configures the allowed headers .
- Check if the given origin is allowed to the allowedOrigin .
- Configures the exposed headers .
- Applies multiple headers .
- Configure methods
- Creates a max - age - header .
- Configure Access Control - credentials
cors Key Features
cors Examples and Code Snippets
License : Strong Copyleft (CC BY-SA 4.0)
Copyconst express = require('express');
const app = express();
const bodyParser = require('body-parser');
const cookieParser = require('cookie-parser');
const cors = require('cors');
const errorHandler = require('./_middleware/error-handler');const cors = require("cors");
let whitelist = ["http://localhost:3000"];
// Middleware
app.use(
cors({
origin: function (origin, callback) {
if (!origin) return callback(null, true);
if (whitelist.indexconst express = require('express');
const app = express();
const cors = require('cors');
const path = require('path');
app.use(express.json());
app.use(cors());
const db = require('./models');
//****************************************const express = require('express');
const app = express();
const cors = require('cors');
const path = require('path');
app.use(express.json());
app.use(cors());
const db = require('./models');
app.use(express.static(path.join(__dirname,const cors = require('cors');
app.use(cors({origin: true, credentials: true}));
const express = require("express");
const bodyParser = require("body-parser");
const cors = require("cors");
const app = express();
const { db, port } = require("./config.js");
app.use(bodyParser.json());
app.use(
bodyParser.urlencoded(const express = require('express')
const cors = require('cors')
const app = express()
var corsOptions = {
origin: 'https://n-blogcode.netlify.app'
}
...
app.use(cors(corsOptions)) //cors for all routes
app.options('*', cors(def createClient(accessKey: String, secretKey: String, region: String = "us"): AmazonS3 = {
val endpointConfig = new EndpointConfiguration("https://storage.googleapis.com", region)
val credentials = new BasicAWSCredentials(accessKe.AddMicrosoftIdentityWebApp(authOptions =>
{
this.Configuration.Bind("AzureAD", authOptions);
authOptions.MaxAge = TimeSpan.FromDays(2);
}
, sessionOptions =>
{
// This appears to be obsolete. Don't use it because you getimport * as cors from "cors";
const corsHandler = cors({ origin: true });
// allow cors in http function
exports.myFunc = functions.https.onRequest((req, resp) => {
corsHandler(req, res, async () => {
// youCommunity Discussions
Trending Discussions on cors
QUESTION
I am trying to get a Flask and Docker application to work but when I try and run it using my docker-compose up command in my Visual Studio terminal, it gives me an ImportError called ImportError: cannot import name 'json' from itsdangerous. I have tried to look for possible solutions to this problem but as of right now there are not many on here or anywhere else. The only two solutions I could find are to change the current installation of MarkupSafe and itsdangerous to a higher version: https://serverfault.com/questions/1094062/from-itsdangerous-import-json-as-json-importerror-cannot-import-name-json-fr and another one on GitHub that tells me to essentially change the MarkUpSafe and itsdangerous installation again https://github.com/aws/aws-sam-cli/issues/3661, I have also tried to make a virtual environment named veganetworkscriptenv to install the packages but that has also failed as well. I am currently using Flask 2.0.0 and Docker 5.0.0 and the error occurs on line eight in vegamain.py.
Here is the full ImportError that I get when I try and run the program:
...ANSWER
Answered 2022-Feb-20 at 12:31I was facing the same issue while running docker containers with flask.
I downgraded Flask to 1.1.4 and markupsafe to 2.0.1 which solved my issue.
Check this for reference.
QUESTION
I'm trying to connect Spring Security to my project. Created the Security Config class
...ANSWER
Answered 2022-Mar-02 at 19:19If this is a local environment, you don't need to configure Spring, instead you modify angular configuration.
Create a file proxy.conf.json in your project's src/ folder.
Add the following content to the new proxy file:
QUESTION
Apparently throwError(error) is now deprecated. The IntelliSense of VS Code suggests throwError(() => new Error('error'). new Error(...) accepts only strings. What's the correct way to replace it without breaking my HttpErrorHandlerService ?
ANSWER
Answered 2021-Aug-04 at 19:08Instead of this:
QUESTION
We have a test environment on a public site. There we use --disable-web-security flag on chrome for the testers to bypass CORS errors for public service calls during manual test phase. And also we have localhost requests on the agent machine. However today with Chrome 98 update we started struggling with the network requests targeting localhost.
The error we get is for the localhost requests from a public site:
Access to XMLHttpRequest at 'https://localhost:3030/static/first.qjson' from origin 'https://....com' has been blocked by CORS policy: Request had no target IP address space, yet the resource is in address space `local`.
The site on localhost is configured to return Access-Control-Allow-* CORS headers including "Access-Control-Allow-Private-Network: true".
And also I do not see any preflight request. Just one GET request with CORS error on it.
We suspect this might be a side effect caused when you disable web security by --disable-web-security. It might be preventing obtaining of the target IP address space. Our assumption is based on the CORS preflight section on https://wicg.github.io/private-network-access/
3.1.2. CORS preflight
The HTTP fetch algorithm should be adjusted to ensure that a preflight is triggered for all private network requests initiated from secure contexts.
The main issue here is again that the response’s IP address space is not known until a connection is obtained in HTTP-network fetch, which is layered under CORS-preflight fetch.
So does anyone know any workaround for Private Network Access with --disable-web-security flag ? Or maybe we are missing something. Thanks for the help.
...ANSWER
Answered 2022-Feb-09 at 04:20Below Steps can help to solve issue in chrome 98, for other browser like edge you need to do similar like chrome.
For MACRequestly with chrome version 98. You need to follow following steps :- Run this command on terminal
defaults write com.google.Chrome InsecurePrivateNetworkRequestsAllowed -bool trueRestart your Browser, Not work then restart your machine
- Run 'regedit' to open windows registry (If permission issue came then run that command with Admin command prompt)
- Go to Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Chrome
- Create new DWORD value with "InsecurePrivateNetworkRequestsAllowed" Name
- Change Value to "1"
- Restart your Browser
QUESTION
I have some react code that is rendering content dynamically via React.createElement. As such, css is applied via an object. Elements in that dynamic generation can have background image, pointing to a public aws S3 bucket.
It seems that every time my components re-render, the background images are being fetched again from S3. This is delaying the page render. I have S3 meta-data for Cache-Control set on all the objects . Here are request and response headers for background image load -
Response header -
...ANSWER
Answered 2022-Feb-23 at 20:53The reason you're seeing a network request is probably because you're using the Cache-Control: no-cache header in your request.
As seen here:
The no-cache response directive indicates that the response can be stored in caches, but the response must be validated with the origin server before each reuse, even when the cache is disconnected from the origin server.
Cache-Control: no-cache
If you want caches to always check for content updates while reusing stored content, no-cache is the directive to use. It does this by requiring caches to revalidate each request with the origin server.
Note that no-cache does not mean "don't cache". no-cache allows caches to store a response but requires them to revalidate it before reuse. If the sense of "don't cache" that you want is actually "don't store", then no-store is the directive to use.
See here: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#response_directives
Here is what a full request for a cached asset looks like on my network tab, when the asset returns 304 Not Modified from the validation request. (from S3) This is in a background: url context.
QUESTION
I am using MongoDB(Mongo Atlas) in my Django app. All was working fine till yesterday. But today, when I ran the server, it is showing me the following error on console
...ANSWER
Answered 2021-Oct-03 at 05:57This is because of a root CA Let’s Encrypt uses (and Mongo Atals uses Let's Encrypt) has expired on 2020-09-30 - namely the "IdentTrust DST Root CA X3" one.
The fix is to manually install in the Windows certificate store the "ISRG Root X1" and "ISRG Root X2" root certificates, and the "Let’s Encrypt R3" intermediate one - link to their official site - https://letsencrypt.org/certificates/
Copy from the comments: download the .der field from the 1st category, download, double click and follow the wizard to install it.
QUESTION
To correctly preload font files, we're told we always need the crossorigin attribute applied to our tags, e.g:
ANSWER
Answered 2022-Jan-27 at 12:16The HTML attribute crossorigin defines how to handle crossorigin requests. Setting the crossorigin attribute (equivalent to crossorigin="anonymous") will switch the request to a CORS request using the same-origin policy. It is required on the rel="preload" as font requests require same-origin policy.
The same-origin policy is required on almost all new resource types, such as fetch(),
QUESTION
I have upgraded my angular to angular 13. when I run to build SSR it gives me following error.
...ANSWER
Answered 2022-Jan-22 at 05:29I just solve this issue by correcting the RxJS version to 7.4.0. I hope this can solve others issue as well.
QUESTION
I have this code running in the browser
...ANSWER
Answered 2022-Jan-17 at 23:28I don't understand, I need to specify the bearer token somehow, even in the docs it says to put it in the Authorization header, why aren't they allowing it?
This is a different problem, is not related to the Bearer token at all. From the error you're getting, it means, the origin you're using to fetch the Slack API, is not trusted (http://127.0.0.1:5500), there is nothing you can do from the browser since this is a policy that comes from the server which defines the authorized origins. (Learn more about CORS here) Since I don't think this is supported by Slack, you will need to fetch the Slack API from the server.
One way to solve this, is by exposing a backend API, for example:
Post a message to Slack Run in FusebitQUESTION
Configured CORS in my ASP.NET Core 6.0 Web API project. But the preflight request receives a http 405 error.
In other words HTTP OPTION is not allowed. Looks like cors is not enabled.
I've seen examples with config.EnableCors(); but there is no App_Start/WebApiConfig.cs in this project template.
What am I missing here?
Program.cs
...ANSWER
Answered 2021-Dec-28 at 20:05Add service builder.Services.AddCors and app add app.UseCors("corsapp");
replace builder.WithOrigins("*") with builder.WithOrigins("http://localhost:800", "https://misite.com");
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