WhatsApp/0 returns content (preview generated) as expected while Whatsapp/2 doesn't

[paulincai]

I use the latest versions of node and server Prerenders.

WhatsApp/0, as I see it in the logs is for the mobile App and WhatsApp/2 is for both Web and OSX App (possibly Windows App too)

Will just link my comment into another Issue:
From the server log:

54.170.31.203 - - [20/Mar/2019:22:07:41 +0000] "GET /https://www.activitree.com/activities/culture/archaeological_site HTTP/1.1" 200 36042 "-" "WhatsApp/0.3.2386 N"                                
54.170.31.203 - - [20/Mar/2019:22:08:02 +0000] "GET /https://www.activitree.com/activities/culture/archaeological_site HTTP/1.1" 200 36042 "-" "WhatsApp/2.19.31 i"   

#168 (comment)

[thoop]

That is unexpected since the prerender-node middleware checks for WhatsApp as a substring of the incoming user agent (both lowercased before compared) So I would expect both of those requests to return a prerendered page.

I'm not able to reproduce this in local testing either. Using both of those user agents seem to return a prerendered page for me when testing a website of mine with prerender-node installed.

So when you use WhatsApp/2 is it just returning your javascript page?

[paulincai]

Hi @thoop, I would assume the prerendered page is returned cause I can see the response on the Prerender server console when I share a link on my mobile (tried both and Android phone and Iphone):

NGINX:

54.155.24.245 - - [30/Mar/2019:16:28:31 +0000] "GET /https://www.activitree.com/ HTTP/1.1" 200 41179 "-"                                                          
"WhatsApp/2.19.34 A"   

Prerender:

2019-03-30T16:28:31.613Z got 200 in 13ms for https://www.activitree.com/ 

This is similar to the responses when I share from Whatsapp on my MAC, the only difference is that MAC Whatsapp and browser Whatsapp show the preview. You can experience that with this link https://www.activitree.com and I can confirm in advance that the Prerender server will have similar responses (all my routes are Prerendered already.)

[thoop]

Hmm, could it be possible that WhatsApp on mobile had a previously cached version of your page from before you installed Prerender? Otherwise, that seems like it's working as expected but WhatsApp just isn't showing the info properly.