Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

What is the syntax for Localhost in the meta tag Content Security Policy?

Posted on 2016-09-10
3
Medium Priority
?
538 Views
Last Modified: 2016-09-13
I am developing a Phonegap application that not only runs on the phone but also on the desktop's browser.  The application needs to access the resources in the www directory and a few js files that reside on external sites.  So far my meta tag looks like this:

<meta http-equiv="Content-Security-Policy" content="default-src 'unsafe-inline' localhost:*/*  'self' *.shlepz.com  *.googleapis.com   https://www.youtube.com  *.gstatic.com  *.ytimg.com; ">

Open in new window

With this meta tag I am still receiving the error, "127.0.0.1/:195 Refused to connect to 'ws://127.0.0.1:8080//ws' because it violates the following Content Security Policy directive:

I have no idea what ws is.  How do I change the localhost entry in the meta tag to make the error go away?  To state the incredibly obvious, I don't know what the port number will be until the application is loaded.  Most of the time it is 8080 but not always.

Thank you for your time,
0
Comment
Question by:Michael David
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 28

Accepted Solution

by:
Dan McFadden earned 2000 total points
ID: 41793866
The "ws://127.0.0.1:8080//ws" is a reference to localhost.  Also the CSP format is invalid based on the definition of the tag.  Best thing to do is to use a CSP generator.

Link:  http://cspisawesome.com/

Also, a few reference links:

1. https://content-security-policy.com/
2. http://www.html5rocks.com/en/tutorials/security/content-security-policy/
3. http://www.cspplayground.com/home

Dan
0
 
LVL 28

Expert Comment

by:Dan McFadden
ID: 41793867
I would try this in the meta tag:

default-src 'self' *.shlepz.com *.googleapis.com https://www.youtube.com *.gstatic.com *.ytimg.com;

Open in new window


Dan
0
 

Author Closing Comment

by:Michael David
ID: 41795752
It makes sense that a content security policy generator exists, but I didn't think of searching for it.  I was hand generating it.  Thank you so much for this link.
0

Featured Post

Learn how to optimize MySQL for your business need

With the increasing importance of apps & networks in both business & personal interconnections, perfor. has become one of the key metrics of successful communication. This ebook is a hands-on business-case-driven guide to understanding MySQL query parameter tuning & database perf

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Originally, this post was published on Monitis Blog, you can check it here . It goes without saying that technology has transformed society and the very nature of how we live, work, and communicate in ways that would’ve been incomprehensible 5 ye…
How does someone stay on the right and legal side of the hacking world?
The viewer will learn how to create a basic form using some HTML5 and PHP for later processing. Set up your basic HTML file. Open your form tag and set the method and action attributes.: (CODE) Set up your first few inputs one for the name and …
Email security requires an ever evolving service that stays up to date with counter-evolving threats. The Email Laundry perform Research and Development to ensure their email security service evolves faster than cyber criminals. We apply our Threat…

722 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question