GWT page is not rendered about prerender

[steffimueller]

+1

[thoop]

I'll look into this and let you know what I find. Thanks for letting me know!

[thoop]

It looks like this is a problem with GWT: https://groups.google.com/forum/#!topic/phantomjs/GwO02VsUHeQ

Basically, GWT checks the current user agent against the user agents that your application supports. Since our Prerender server has a custom user agent, GWT doesn't render anything. According to that article: "When compiling GWT you can specify which browsers and which versions your application will support". I haven't used GWT, so I can't tell you how.

The User Agent that Prerender uses is:
Prerender (+https://github.com/prerender/prerender)

I was able to verify the issue by changing the user agent of my local Prerender server to the same User Agent that my Chrome browser is currently using. That rendered the page correctly when I navigated to http://localhost:1337/http://gwtp-carstore.appspot.com

Please reopen this issue if you are unable to get it working after you compile GWT correctly with the Prerender user agent.

Thanks!

[confile]

It is not possible to use the Prerender user-agent for GWT because GWT has a fixed set of user agents that you have to use. What you can do is changing the user agent of prerender to

page.set('settings.userAgent', 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_1) AppleWebKit/537.36 (KHTML, like Gecko)');

Do you see any other solution to fix that?

[thoop]

I'll change it to the actual user agent of phantomjs and add the Prerender user agent on the end. Your GWT page seems to work in that case.

It'll look like this:

Mozilla/5.0 (Macintosh; Intel Mac OS X) AppleWebKit/534.34 (KHTML, like Gecko) PhantomJS/1.9.7 Safari/534.34 Prerender (+https://github.com/prerender/prerender)

[confile]

well that would be great. I will test it. Let me know when you have fixed that

[thoop]

Fixed on the github repo. It'll be pushed to production of prerender.io sometime later today.

[confile]

@thoop Great thank you I will test it and give you feedback!

[confile]

@thoop it works without modification now. Thank you. You can close this issue.

[thoop]

Thanks for letting me know!