Category: Internet

All Internet related works will be listed here..

How do I use Java with the Google Chrome browser?

 

NPAPI support by Chrome

The Java plug-in for web browsers relies on the cross platform plugin architecture NPAPI, which has long been, and currently is, supported by all major web browsers. Google announced in September 2013 plans to remove NPAPI support from Chrome by “the end of 2014”, thus effectively dropping support for Silverlight, Java, Facebook Video and other similar NPAPI based plugins.

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 Enabling NPAPI in Chrome Version 42 and later

As of Chrome Version 42, an additional configuration step is required to continue using NPAPI plugins.

  1. In your URL bar, enter:
    chrome://flags/#enable-npapi
  2. Click the Enable link for the Enable NPAPI configuration option.
  3. Click the Relaunch button that now appears at the bottom of the configuration page.

Java plug-in needs permission

 

If you see a message within Chrome that says Java(TM) needs your permission to run, you will need to respond to the Chrome options in order to run plug-ins on the page. Options vary according to the version of Chrome.

Chrome plug-in blocked icon (in address bar)

Look for the blocked plug-in icon in the Chrome address bar. Clicking on the icon will display Plug-ins were blocked on this page and plug-in options

  • Click Always allow plug-ins on [name of site] to allow plug-ins (including Java) to run on all this site’s pages.
  • Click Run all plug-ins this time to allow the plug-in (including Java) content on the page to run only until you leave this page.
  • Click Continue blocking plug-ins to prevent plug-ins from running on the page.

In addition, you can manage permissions on a site basis through the Manage plug-in blocking option.

Chrome message bar

  • Click Run this time to allow the Java content on the page to run only until you leave this page.
  • Click Always run on this site to allow Java to run on all this site’s pages. You will not see this message again for pages on this site.

Additional plug-in required

If you see a message bar within Chrome that says Java(TM) is required to display some elements on this page, click on Install plug-in in the Chrome message bar, or download from java.com.

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Plug-in out of date

If you see a message bar within Chrome that says Java(TM) was blocked because it is out of date, click on Update plug-in in the Chrome message bar to get the latest Java.

Reference:

https://java.com/en/download/faq/chrome.xml

Alternatives to NPAPI plugin

After upgrading the earlier versions of Chromium browsers to later versions greater than 42, internet users have started complaints that the JAVA plugins are not supported by chrome. After a bit research, found that chromium browsers have disabled NPAPI plugin-in on their latest versions. The deprecation of NPAPI plug-in caused the JAVA plugins to be blocked in Chrome. 

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What is NPAPI plug-in? (Source: Wiki)

Netscape Plugin Application Programming Interface (NPAPI) is a cross-platform plugin architecture used by many web browsers.

It was first developed for Netscape browsers, starting in 1995 with Netscape Navigator 2.0, but was subsequently adopted in Internet Explorer 3 in 1996 and implemented by many other browsers, although some browsers later dropped support.

For stability and security reasons, Google Chrome decided, in 2013, to start phasing out support for NPAPI. As of Chrome version 42, NPAPI is disabled by default and must be re-enabled explicitly. Google intends to remove support entirely in version 45, due in September 2015. 

Alternatives to NPAPI (Source: chromium.org)

With the deprecation of NPAPI, some developers have asked which modern technologies can be used to implement features which in the past would have relied on a platform-specific NPAPI plug-in. In answer to these questions we have composed the following list of common NPAPI use cases and web platform alternatives.

In general, the core standards-based web technologies (HTML/CSS/JS) are suitable for most client software development. If your application requires access to features outside the web sandbox, myriad Chrome Extension and App APIs offer access to OS features.

Video and audio

A common use case for NPAPI plug-ins on the modern web is embedded video and/or audio. A range of modern web technologies exist to facilitate media streaming.  The basic building blocks are WebRTC and media elements:

HTML5 Media Elements:  The HTML5 Specification provides a rich media platform through the <audio> and <video> elements. More complicated use cases can be achieved using the <canvas> element (for example check out the Video FX Chrome Experiment).

WebRTC:  WebRTC was designed for real time communication between peers and the technology can also be used for applications like live streaming media and data. Google’s Chromecast device uses WebRTC to stream HD video between a browser and TV.

Several features on top of these building blocks support more advanced use cases:

Adaptive Streaming

The ability to adapt media streaming to an individual consumer is critical in delivering high-quality content to a large audience. In the past this capability has been provided by technologies such as Silverlight’s smooth streaming and Quicktime’s HTTP live streaming. The Media Source Extensions to the HTML media element provide the capability to adapt a stream to an individual consumer on the modern web. Html5rocks has put together a great example of how to use the Media Source Extensions to implement some of these common use cases.

Video Conferencing

Several of the most popular NPAPI extensions including Facebook Video Chat and Google Talk provide video conferencing functionality within the browser. With the introduction of WebRTC video conferencing is facilitated directly through JavaScript APIs. The Cube Slam Chrome Experiment provides an example of peer to peer video conferencing via WebRTC.

Digital Rights Management

Encrypted Media Extensions give HTML5 video the DRM capabilities that previously would have required the use of a platform specific plug-in. The WebM project has provided a demo which performs video playback using the Encrypted Media Extensions of the video element.  For more information, check out the EME HTML5 Rocks article.

Closed Captioning

WebVTT and the <track> element (a child element of <video>) enable web developers to add timed-text captioning capabilities to their HTML apps.

Communicating with native applications

Try the Native Messaging API for Chrome Apps and Extensions.

Games & 3D

Native Client (NaCL) provides a rich environment for cross-platform game development. Many games have already been ported to or designed for NaCL. A number of examples and detailed tutorials to get started with NaCL are available on the NaCL development site. The WebGL specification provides a high-performance platform for hardware-accelerated 3D graphics in the browser. Chrome experiments has an entire category dedicated to examples and demos of various WebGL use cases.

Security

Some services have relied on NPAPI-based security techniques.  We recommend switching to TLS or, soon, Web Crypto.

Hardware access

In the past it has often been necessary to write platform specific plug-ins to access system hardware such as webcams, microphones, USB devices, and bluetooth. Direct access to local media streams such as webcams and microphones can now be requested directly from the web via the WebRTC Media Capture specification. Chromium also provides an App API for access to USB hardware and another API for accessing Bluetooth devices.

Screen capture

Chrome extensions can perform screen capture or streaming using either Desktop Capture for full screen capture or the Tabs API captureVisibleTab for individual tab content capture. 

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Reference:

http://www.chromium.org/developers/npapi-deprecation

http://en.wikipedia.org/wiki/NPAPI

How do I setup proxy in Red Hat Enterprise Linux to access internet?

To setup the proxy environment variable as a global variable, open /etc/profile file:

# vi /etc/profile

Add the following information:

export http_proxy=http://proxy-server.name.or.ip:3128/

OR

export http_proxy=http://USERNAME:PASSOWRD@proxy-server.mycorp.com:3128/

Save and close the file.

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VMware Player unrecoverable error: (vmx)

When I opened my VMware today, following error was displayed:

VMware Player unrecoverable error: (vmx)

Exception 0xc0000006 (disk error while paging) has occurred.

A log file is available in "C:UsersacerDocumentsVirtual MachinesRed Hat Enterprise Linux 6 64-bitvmware.log".

You can request support.

To collect data to submit to VMware technical support, run "vm-support".

We will respond on the basis of your support entitlement.

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Solution: Remove the following two files from the VMware installed directory. You can check the installed directory from Player -> Manage -> Virtual Machine Settings -> Options

  1. Red Hat Enterprise Linux 6 64-bit-93cd0331.vmem
  2. Red Hat Enterprise Linux 6 64-bit-93cd0331.vmss

[Source: http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1002347]

Unable to save changes to menu in Drupal 6

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On the menu-customize page, after

1) dragging a menu item, or

2) checking/unchecking an enable checkbox,

and clicking “Save configuration”, changes to menu were not saved in Drupal 6. Hence, I started to debug the issue at the Application level. After long head bang, I raised my hand and took some rest. Finally, I googled and found that the problem was not at the Application Level but at System Level. I came to know that while posting the form (i.e. when Save Configuration is clicked) the data sent was of large amount and the system was not able to accept since maximum input size was not defined. Following were the changes made in php.ini file.

; How many GET/POST/COOKIE input variables may be accepted
max_input_vars = 2048

After making above changes I restarted the Apache server. Thus, the problem was resolved and Save Configuration in Menu started working.

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MTNL Broadband Browsing Problem

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I am using MTNL Broadband for 1 and a half years. I had never faced Webpage browsing problem since then. I called MTNL Customer Care many times but they fooled me. Problem still not solved.

Then I started searching regarding the problem my own. I googled with the same title as this post. I found that huge number of MTNL Customers facing the same problem.

images

After continuous haunt for the solution I found a blog where the author introduced me about opendns. It was a new topic to me and was not that concerned. I followed the comments on that post I found some dns ips and was told that if updated on your system’s network config Browsing Problem would vanish.

Immediately, I updated my dns configuration. God damn, it worked. Thanks to the auther.

Following are the DNS IPs :

208.67.222.222,

208.67.220.220

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Alphabets Kids will Learn in Future

Alphabets kids will learn in Future.

A: Amazon.com
A shopping Website.

B: Blogspot.com
A free blog website from google.com.
Bing.com
A search engine from Microsoft.

C: Cnn.com
CNN News Website

D: Dropbox.com
Share Files on the Cloud

E: Ebay.com
A shopping Website.

F: Flipkart.com
A shopping Website.
Facebook.com
A social networking website.

G: Google.com
A Search Engine

H: Hostgator.com
A Website Hosting Website

I: Instagram.com
Share Pictures online.

J: Jabong.com
A shopping Website.

K: Kakaku.com
A Chinese Website

L: Live.com
Email Website from Microsoft

M: Msn.com
A Search Engine from Microsoft.

N: Naukri.com
A Job Search Website.

O: Olx.in
Sell your old products online

P: Photobucket.com
Share images online

Q: Quikr.com
Sell your old products online

R: Rediffmail.com
An Email Website

S: SurveyMonkey.com
Create Surveys and Get Answers online.

T: Twitter.com
A microblog Website

U: Upload.com
Upload and Share Files

V: Vimeo.com
Upload and Share Videos

W: Wikipedia.org
The Free Encyclopedia

X: Xe.com
Live Exchange Rates.

Y: Youtube.com
Upload and Share Videos

Z: Zomato.com
Search Restaurants Nearby.

Information Compiled from alexa.com (Top 500 Websites on the Web)

How to Recover Files Hidden by Virus in Pen Drive?

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memory-card

  1. Open Windows Command Prompt in elevated mode (for Windows 8, 7, Vista)
  2. Go to path of pen drive i.e. my case it is F, type f: and hit enter
  3. Type attrib -s -h -r /S /D and hit enter

 

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Disk /dev/sdb doesn’t contain a valid partition table in Linux

drive-not-formatted

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1. Run fdisk /dev/sdb

2. Create a new partition table with ‘o’

3. Create a new partition with ‘n’

4. Let it use the default values by hitting ENTER when it asks for numbers, to take the entire available disk in this partition

5. Write the new partition table with ‘w’, which should dump you back to the prompt.

6. Finally, you should have a /dev/sdb1 to format using the following command:

  sudo mkfs.vfat -n ‘Ubuntu’ -I /dev/sdb1

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Http Error 0 in Drupal

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Http Error 0  is a very common error that occurs in Drupal. There are many reasons behind this error.

htttp-error-0

One of the way to resolve this error is to append the following line in this file : /etc/apache2/mods-available/fcgi.conf

[code]

MaxRequestLen 536870912

[/code]

Increase the number value of the MaxRequestLen until the error stops to continue.

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