• Home
  • Archive
  • Tools
  • Contact Us

The Customize Windows

Technology Journal

  • Cloud Computing
  • Computer
  • Digital Photography
  • Windows 7
  • Archive
  • Cloud Computing
  • Virtualization
  • Computer and Internet
  • Digital Photography
  • Android
  • Sysadmin
  • Electronics
  • Big Data
  • Virtualization
  • Downloads
  • Web Development
  • Apple
  • Android
Advertisement
You are here: Home » Cross-Origin Resource Sharing (CORS)

By Abhishek Ghosh September 8, 2014 7:02 pm Updated on September 8, 2014

Cross-Origin Resource Sharing (CORS)

Advertisement

What is Cross-Origin Resource Sharing (CORS)? Why we need to know about (CORS) in the context of HTTPS? Here is in details discussion. You can read which SSL certificate you need if you yet not have installed SSL certificate. It is quite common with SSL to get errors for this Cross-Origin Resource Sharing (CORS) part. Minimum should be known.

Table of Contents

  • 1 Introduction
  • 2 Basics of Cross-Origin Resource Sharing
  • 3 Implementation of CORS
  • 4 Relationship With JSONP

 

Basics of Cross-Origin Resource Sharing (CORS)

 

Cross-origin resource sharing (CORS) is a specification of a technology browsers that defines means for server to allow its resources to be accessed by a web page from a different domain. This type of access would otherwise be denied the same origin policy. CORS defines a means by which a web browser and web server may interact to determine whether or not the cross-origin requests will be allowed. It is an agreement that allows great flexibility, but it is safer to allow all requests of this type. Support for Cross-orign was originally proposed by Matt Oshry, Brad Porter and Michael Bodell from Tellme Networks in March 2004 for inclusion in the VoiceXML 2.1 to allow requests for cross-orign data securely VoiceXML browsers. The mechanism was considered to be general in nature and not specific to VoiceXML and was later implemented via a separate Implementation Note. The WebApps Working Group of the W3C with participation of the major browser vendors have begun to formalize Note on a W3C Working Draft in the way of a formal status of a W3C Recommendation.

Cross-Origin Resource Sharing (CORS)
 

Implementation of Cross-Origin Resource Sharing (CORS)

 

Advertisement

---

Implement the CORS on a server is as simple as sending additional HTTP headers, for example:

 

Vim
1
2
Access-Control-Allow-Origin: *
Access-Control-Allow-Origin: https://example.com:443 http://cdn.example.com

The CORS is supported by all browsers based on the engines – Gecko 1.9.1 (Firefox 3.5, SeaMonkey 2.0) and above, WebKit (Unsure about the initial version, Safari 4 and higher, Google Chrome 3 and higher, possibly earlier), MSHTML / Trident 4.0 (Internet Explorer 8) provides partial support via XDomainRequest object.

Usage of CORS in Nginx :

Vim
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
# multiple contributors
# see http://enable-cors.org/index.html
location / {
 
    if ($http_origin ~* (https?://[^/]*\.rackcdn\.com(:[0-9]+)?)) {
        set $cors "true";
    }
    if ($request_method = 'OPTIONS') {
        set $cors "${cors}options";  
    }
 
    if ($request_method = 'GET') {
        set $cors "${cors}get";  
    }
    if ($request_method = 'POST') {
        set $cors "${cors}post";
    }
 
    if ($cors = "trueget") {
        add_header 'Access-Control-Allow-Origin' "$http_origin";
        add_header 'Access-Control-Allow-Credentials' 'true';
        # add_header 'Access-Control-Expose-Headers' 'myresponseheader';
    }
 
    if ($cors = "truepost") {
        add_header 'Access-Control-Allow-Origin' "$http_origin";
        add_header 'Access-Control-Allow-Credentials' 'true';
    }
    if ($cors = "trueoptions") {
        add_header 'Access-Control-Allow-Origin' "$http_origin";
        add_header 'Access-Control-Allow-Credentials' 'true';
        add_header 'Access-Control-Max-Age' 1728000;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
        add_header 'Access-Control-Allow-Headers' 'Authorization,Content-Type,Accept,Origin,User-Agent,DNT,Cache-Control,X-Mx-ReqToken,Keep-Alive,X-Requested-With,If-Modified-Since';
        add_header 'Content-Length' 0;
        add_header 'Content-Type' 'text/plain charset=UTF-8';
        return 204;
    }
    # other stuffs
}
# copyleft under gnu gpl 3.0

 

Relationship of Cross-Origin Resource Sharing (CORS) and JSONP

 

CORS can be used with a modern alternative to standard JSONP. While JSONP requests only supports using the GET method, CORS also supports other types of HTTP requests. With CORS it is possible to use common XMLHttpRequest. On the other hand, JSONP works with legacy browsers without CORS support. CORS is supported by most modern browsers.

Go To Top of This Article

Tagged With cors mshtml , Cross-Origin Resource Sharing (CORS) on Kayako , is CORS on https , paperuri:(da2c02f5753b792a35d4c36ded6e629d) , what is CORS (Cross-Origin Resource Sharing)

This Article Has Been Shared 773 Times!

Facebook Twitter Pinterest

Abhishek Ghosh

About Abhishek Ghosh

Abhishek Ghosh is a Businessman, Surgeon, Author and Blogger. You can keep touch with him on Twitter - @AbhishekCTRL.

Here’s what we’ve got for you which might like :

Articles Related to Cross-Origin Resource Sharing (CORS)

  • The various aspects of Web 2.0

    What is Web 2.0? What are the various aspects of Web 2.0? Author discusses about Web 2.0 in simple language.

  • Connecting Two Computers With USB Port over Ethernet

    Connecting Two Computers With USB Port over Ethernet has the advantage that you can share files, Internet Connection but will not need to carry a router.

  • Tips for Improving Skill of Digital Photography

    Tips for Improving Skill of Digital Photography – some less known practice can make your photography more better. These are not magics but will definitely work.

  • Base64 Encoding Schemes and Usage with HTML5 Simplified

    Base64 Encoding Schemes are now frequently used in HTML5 design for the CSS part. But what this Base64 Encoding Schemes are and how you can use them?

  • DNS Prefetch and Link prefetching in HTML5

    DNS Prefetch and Link prefetching in HTML5 is a method to resolve the fully qualified domain names before an user tries to get the linked static files.

Additionally, performing a search on this website can help you. Also, we have YouTube Videos.

Take The Conversation Further ...

We'd love to know your thoughts on this article.
Meet the Author over on Twitter to join the conversation right now!

If you want to Advertise on our Article or want a Sponsored Article, you are invited to Contact us.

Contact Us

Subscribe To Our Free Newsletter

Get new posts by email:

Please Confirm the Subscription When Approval Email Will Arrive in Your Email Inbox as Second Step.

Search this website…

 

Popular Articles

Our Homepage is best place to find popular articles!

Here Are Some Good to Read Articles :

  • Cloud Computing Service Models
  • What is Cloud Computing?
  • Cloud Computing and Social Networks in Mobile Space
  • ARM Processor Architecture
  • What Camera Mode to Choose
  • Indispensable MySQL queries for custom fields in WordPress
  • Windows 7 Speech Recognition Scripting Related Tutorials

Social Networks

  • Pinterest (24.3K Followers)
  • Twitter (5.8k Followers)
  • Facebook (5.7k Followers)
  • LinkedIn (3.7k Followers)
  • YouTube (1.3k Followers)
  • GitHub (Repository)
  • GitHub (Gists)
Looking to publish sponsored article on our website?

Contact us

Recent Posts

  • Cyberpunk Aesthetics: What’s in it Special January 27, 2023
  • How to Do Electrical Layout Plan for Adding Smart Switches January 26, 2023
  • What is a Data Mesh? January 25, 2023
  • What is Vehicular Ad-Hoc Network? January 24, 2023
  • Difference Between Panel Light, COB Light, Track Light January 21, 2023

About This Article

Cite this article as: Abhishek Ghosh, "Cross-Origin Resource Sharing (CORS)," in The Customize Windows, September 8, 2014, January 29, 2023, https://thecustomizewindows.com/2014/09/cross-origin-resource-sharing-cors/.

Source:The Customize Windows, JiMA.in

PC users can consult Corrine Chorney for Security.

Want to know more about us? Read Notability and Mentions & Our Setup.

Copyright © 2023 - The Customize Windows | dESIGNed by The Customize Windows

Copyright  · Privacy Policy  · Advertising Policy  · Terms of Service  · Refund Policy

We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept”, you consent to the use of ALL the cookies.
Do not sell my personal information.
Cookie SettingsAccept
Manage consent

Privacy Overview

This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience.
Necessary
Always Enabled
Necessary cookies are absolutely essential for the website to function properly. These cookies ensure basic functionalities and security features of the website, anonymously.
CookieDurationDescription
cookielawinfo-checkbox-analytics11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Analytics".
cookielawinfo-checkbox-functional11 monthsThe cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional".
cookielawinfo-checkbox-necessary11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary".
cookielawinfo-checkbox-others11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other.
cookielawinfo-checkbox-performance11 monthsThis cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Performance".
viewed_cookie_policy11 monthsThe cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. It does not store any personal data.
Functional
Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features.
Performance
Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors.
Analytics
Analytical cookies are used to understand how visitors interact with the website. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc.
Advertisement
Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. These cookies track visitors across websites and collect information to provide customized ads.
Others
Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet.
SAVE & ACCEPT