If you don't care about the unit tests, then lib/ and server.js can be copied. zip I downloaded from github should I copy to the server? Which folder structure should I create on my server? I have previously shared some comments about security at #152 Do not commit the mistake of doing that, it is insecure. I occasionally see people forking the project and removing requireHeaders+ Origin, or allowing credentials (e.g. There are issues (questions & answers) on this issue tracker about hosting on other platforms. The top comment at this page links to "Demo server" in the README, which shows an example of starting the server (or even hosting it on Heroku). ![]() The project ships with a sample, server.js that uses the library with some default values. This project is a library that can be used to create a CORS proxy server. a demo project or an example on a portfolio), you could link to the /corsdemo page and ask visitors to click on the button, once, to opt what should I do to host cors-anywhere on my server? Documentation is very far from being clear. These kinds of scenarios can only be avoided by very clearly making the demo opt-in.įor prototyping purposes (e.g. I have once received a request from a student to help them with recovering their grade after their application failed when the public demo was unavailable. Due to the abuse, the service was often slow or unavailable, which made it a bad service to rely on for portfolio sites. Previously, the demo server was open to everyone by default. I'm just using the app as a portfolio project by the way, with very little traffic. The access is regularly revoked (currently 1-2 times per day, sometimes more if the server is overloaded).įor development purposes this is not an issue, but in production a user couldn't be expected to do this of course. The public demo is identical to the source code in this repository, except with additional routing logic in front to verify that access is permitted. The announcement here and the page where you request access very clearly states that access is temporary. Is frequently re-requesting access the intended behaviour? This got my app working again, though today I had to go through the process again. ![]() Yesterday I requested temporary access via the button located at '/corsdemo'. If you have questions, please search for existing issues first before opening a new Rob. There are also many questions and answers about hosting on the issue tracker here ( ). If you'd like to not have these restrictions, then you should self-host CORS Anywhere.įor an example of self-hosting, see. The only difference is that you need to explicitly opt in before access is temporarily allowed. If your use of CORS Anywhere is infrequent, then the exception from step 3 above will allow you to continue as before. For development, you can also consider the use of browser extensions that automatically enables CORS for certain websites. This is the preferred solution because it is faster and more reliable. You may not need proxy functionality, if the web service that you are trying to access already supports CORS. CORS Anywhere works by combining proxy functionality with CORS. ![]() If possible, try to avoid the need for a proxy at all. ![]() What should current users of CORS Anywhere do in response to this announcement? This allows developers to try out the functionality, to help with deciding on self-hosting or looking for alternatives. 2021, will only serve requests after the visitor has completed a challenge: The user (developer) must visit a page at to temporarily unlock the demo for their browser. By January 31st, 2021, will stop serving as an open proxy.The rate limit will decrease from 200 ( PSA: Countermeasures to abuse #164) per hour to 50 per hour.To counter this, I will make the following changes: Downtime becomes increasingly frequent (e.g. But abuse has become so common that the platform where the demo is hosted (Heroku) has asked me to shut down the server, despite efforts to counter the abuse (rate limits in #45 and #164, and blocking other forms of requests). The demo server of CORS Anywhere () is meant to be a demo of this project.
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