What is Native Messaging Host?

[Vidya Pawar]

Hi,

What is Native Messaging Host on Chrome?

I do have a Linux command line utility which accesses system files and CPU registers to display the CPU information this works fine with no changes on the Chrome Shell.

Now I want  to develop the same features on Chrome with the GUI, so Trying to find out by which is the best way to create a Chrome app

I am trying to see if I could use Native Messaging API , so that I could connect the command line Linux version to Chrome app?

Is it a feasible way.? so have gone through the links below

http://blog.chromium.org/2013/10/connecting-chrome-apps-and-extensions.html

http://developer.chrome.com/extensions/messaging.html#native-messaging

But Not able to find 'WHAT IS NATIVE MESSAGING HOST' ?

Can you please give some working example of Native Messaging host  on Linux ?

Thank you in advance!

Thanks and Regards,

-Vidya

[David P. Caldwell]

https://developer.chrome.com/extensions/messaging.html

Example:

http://src.chromium.org/viewvc/chrome/trunk/src/chrome/common/extensions/docs/examples/api/nativeMessaging/

Not easy to download and install the example, because of:

https://code.google.com/p/chromium/issues/detail?id=329523

-- David.

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[Vidya Pawar]

Hi David,

Thank you for the quick reply.

I am able to see the extension in the Chrome ->Settings->Extensions section.

It has the Relaod (Ctrl+R) option but not the Launch option?

I believe it is same extension as given in the link below

http://blog.chromium.org/2013/10/connecting-chrome-apps-and-extensions.html

Now, How can I run this extension  ?

Thanks and Regards,

-Vidya

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-Vidya

[Rajesh Katalkar]

Vidya, that example is not extension but an chrome app.You will see "Apps" button below chrome addressbar..just click and then you see app icons .click on it and it will start

To view this discussion on the web visit https://groups.google.com/a/chromium.org/d/msgid/chromium-extensions/CAKfOme1iURo0qKHrKCOsuTbp%2BoSjp7YKaHvKOsY0%2BpmMkc_BCQ%40mail.gmail.com.

[Vidya Pawar]

Thank you Rajesh! 

Now I see the app under app section.

It loads the main.html but after loading the app I am getting  following JavaScript error in the 'Console' section

Uncaught SyntaxError: Invald regular expression: missing /

the com.google.chrome.example.echo.json is copied to appropriate location under my Linux system as below

/etc.opt/chrome/native-messaging-hosts 

After searching about this , I got couple of solutions but still not able to fix this issue.

You have any idea what me causing the issue

[Vidya Pawar]

Hi ,

I have now resolved the Javascript issue.

Now while sending the message to Naive host it gives me following error

Failed to connect : Error when communicating with the native messaging host.

in debugging I found that the port object's 'Name' attribute has " " value.

any thoughts what might e causing this issue?

Thank you in advance!

Thanks and Regards,

-Vidya

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-Vidya