cors | CORS net/http middleware for Go | Runtime Evironment library

 by   go-chi Go Version: v1.2.1 License: MIT

kandi X-RAY | cors Summary

kandi X-RAY | cors Summary

cors is a Go library typically used in Server, Runtime Evironment applications. cors has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

go-chi/cors is a fork of github.com/rs/cors that provides a net/http compatible middleware for performing preflight CORS checks on the server side. These headers are required for using the browser native Fetch API. This middleware is designed to be used as a top-level middleware on the chi router. Applying with within a r.Group() or using With() will not work without routes matching OPTIONS added.
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            kandi-support Support

              cors has a low active ecosystem.
              It has 221 star(s) with 27 fork(s). There are 7 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 2 open issues and 6 have been closed. On average issues are closed in 351 days. There are 1 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of cors is v1.2.1

            kandi-Quality Quality

              cors has 0 bugs and 0 code smells.

            kandi-Security Security

              cors has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              cors code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              cors is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              cors releases are not available. You will need to build from source code and install.
              Installation instructions are not available. Examples and code snippets are available.
              It has 895 lines of code, 34 functions and 5 files.
              It has high code complexity. Code complexity directly impacts maintainability of the code.

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            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of cors
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            cors Key Features

            No Key Features are available at this moment for cors.

            cors Examples and Code Snippets

            No Code Snippets are available at this moment for cors.

            Community Discussions

            QUESTION

            Python/Docker ImportError: cannot import name 'json' from itsdangerous
            Asked 2022-Mar-31 at 12:49

            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 12:31

            I 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.

            Source https://stackoverflow.com/questions/71189819

            QUESTION

            Added corsConfigurationSource and still an error "has been blocked by CORS policy"
            Asked 2022-Mar-02 at 19:19

            I'm trying to connect Spring Security to my project. Created the Security Config class

            ...

            ANSWER

            Answered 2022-Mar-02 at 19:19

            If 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:

            Source https://stackoverflow.com/questions/71202079

            QUESTION

            throwError(error) is now deprecated, but there is no new Error(HttpErrorResponse)
            Asked 2022-Mar-01 at 00:42

            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 ?

            http-error.interceptor.ts ...

            ANSWER

            Answered 2021-Aug-04 at 19:08

            QUESTION

            Chrome 98 Private Network Access problem w/ disabled web security: Request had no target IP address space, yet the resource is in address space local
            Asked 2022-Feb-25 at 16:03

            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 04:20

            Below Steps can help to solve issue in chrome 98, for other browser like edge you need to do similar like chrome.

            For MAC
            • Requestly with chrome version 98. You need to follow following steps :- Run this command on terminal

              defaults write com.google.Chrome InsecurePrivateNetworkRequestsAllowed -bool true

            • Restart your Browser, Not work then restart your machine

            For WINDOWS
            • 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

            Source https://stackoverflow.com/questions/71018461

            QUESTION

            Background images in css are not getting cached
            Asked 2022-Feb-25 at 03:48

            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 20:53

            The 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.

            Source https://stackoverflow.com/questions/71004617

            QUESTION

            pymongo [SSL: CERTIFICATE_VERIFY_FAILED]: certificate has expired on Mongo Atlas
            Asked 2022-Jan-29 at 22:03

            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 05:57

            This 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.

            Source https://stackoverflow.com/questions/69397039

            QUESTION

            Why do we need the "crossorigin" attribute when preloading font files?
            Asked 2022-Jan-27 at 12:16

            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 12:16

            The 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(),

            Source https://stackoverflow.com/questions/70183153

            QUESTION

            angular 13: Module not found: Error: Can't resolve 'rxjs/operators'
            Asked 2022-Jan-22 at 05:29

            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 05:29

            I just solve this issue by correcting the RxJS version to 7.4.0. I hope this can solve others issue as well.

            Source https://stackoverflow.com/questions/70589846

            QUESTION

            slack chat.postMessage API endpoint is not allowing the authorization header
            Asked 2022-Jan-17 at 23:28

            I have this code running in the browser

            ...

            ANSWER

            Answered 2022-Jan-17 at 23:28

            I 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 Fusebit

            Source https://stackoverflow.com/questions/70727979

            QUESTION

            How to enable cors in ASP.NET Core 6.0 Web API project?
            Asked 2021-Dec-28 at 21:07

            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 20:05

            Add service builder.Services.AddCors and app add app.UseCors("corsapp");

            replace builder.WithOrigins("*") with builder.WithOrigins("http://localhost:800", "https://misite.com");

            check documentation

            Source https://stackoverflow.com/questions/70511588

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install cors

            You can download it from GitHub.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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            https://github.com/go-chi/cors.git

          • CLI

            gh repo clone go-chi/cors

          • sshUrl

            git@github.com:go-chi/cors.git

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