There is a problem with how Facebook scrapes my page for meta data.
When I use the Facebook object debugger I get the following error:
I am quite sure this has something to do with how my DNS records are defined. It seems the scraper can't even reach my site. As the error states, it can't turn the host name to a valid IP.
When I press the link down the page "See exactly what out scra...", I get "Document returned no data".
I am trying to figure it for about a month now and getting VERY VERY frustrated.
Can someone shed some light on the subject ?
After digging for 3 days came to the conclusion that name servers were configured incorrectly.
I am using Bigrock for the domain and GoDaddy for hosting, by mistake, I configured actual hosting provider hostname in "Name Server 3" and "Name Server 4". But Facebook looks for the content in first server "bigrocks-1.com"(wrong server) server but does not find any hosting and throughs 'Could not resolve the hostname into a valid IP address'.
So do remember to put hosting provider address on the first name server
Hope it may help you :)
ok i had the exact same problem and solution was in the dns ... facebook is not able to fetch the data cause of wrong server name ... you need to get in touch with the hosting service provider where your website is hosted or from where you brought your domain name and ask for the right nanme s
Related
I am trying to point the domain www.xxx.com to www.ttio.com/tc using cloudflare to enable to the https on the site.
On GoDaddy I have changed the nameservers to cloudflare's recommended name servers
I have also gone to "Page rules" on Cloudflare and added a forwarding rule so that the above is in place.
On going to www.xxx.com however, i get the following error:
It redirects to this url: https://shortener.secureserver.net/error_404
and the error is:
Destination
Unknown
Everything's working on our side, so the link you clicked is either wrong or has been retired.
I have done everything I think I should have, so could anyone shed any light on this please?
You can't point a domain (e.g. www.xxx.com) at an URL (e.g. www.ttio.com/tc). A domain needs to be converted to an IP address by the browser.
If the web server for www.ttio.com is set to recognise www.xxx.com and serve the content from the /tc folder under www.ttio.com, just set up a CNAME for www.xxx.com pointing www.ttio.com and it will work.
If the web server for www.ttio.com doesn't know about www.xxx.com at all, you'll need to use a translation proxy. One way of doing that is using a Cloudflare worker to map the www.xxx.com/PATH URL to www.ttio.com/tc/PATH. An example of how to do this is at https://developers.cloudflare.com/workers/tutorials/configure-your-cdn/. You may also need to rewrite the HTML so that links in the pages don't point to www.ttio.com/tc. An example of how to do that is at https://developers.cloudflare.com/workers/reference/apis/html-rewriter/.
I'm trying to insert http://localhost:4000/api/myroute as returlURL
on https://developer.paypal.com.
Paypal displays this message :
We are sorry something went wrong while saving application please try again...
So, localhost seems be forbidden but the last week, it's was ok.
How can i enter localhost url ?
Please, do not answer me the 127.0.0.1 solution.
"localhost" to PayPal's server, is themselves, so if they tried to redirect to http://localhost/whatever, it would just go right back to their own server, and that URL most likely wouldn't exist, and you'd end up with a 404 at the PayPal server.
If you want to test on your local server you're going to need to setup DNS to point some sort of a domain to your public IP address there, and make sure your web server is configured to answer to that domain as well.
For example, your site might be www.domain.com. Lookup your public IP address there, and then create a DNS record for domain.com that points sandbox.domain.com to your public IP address there.
Then you can use http://sandbox.domain.com anytime you need to work with PayPal (or anything else) and it'll work the same as "localhost" is for you now, but 3rd party servers will be able to communicate with your application as expected. This will also allow you to have other people on different networks test/demo the site with you.
I've recently setup a new Tomcat instance on Google Compute Engine and I can access my Tomcat instance via its IP address in the browser.
I've now setup a Cloud DNS entry and had my domain registrar point my domain name to the Cloud DNS servers. However this was 2 days ago and I still can't access my website via the domain name.
The WHOIS record shows the following Name Server entries
Name Server ns-cloud-e1.googledomains.com
Name Server ns-cloud-e2.googledomains.com
Name Server ns-cloud-e3.googledomains.com
Name Server ns-cloud-e4.googledomains.com
I've also setup an A record in the Cloud DNS console based on the feedback of my domain registrar. Is there anything else I need to setup in order for all this to work?
[EDIT 1] Having a look again at the instructions provided by Google it seems the name server names they wanted me to use have changed to
ns-cloud-d1.googledomains.com.
ns-cloud-d2.googledomains.com.
ns-cloud-d3.googledomains.com.
ns-cloud-d4.googledomains.com.
I've asked my registrar to make the change in case this is the problem.
[EDIT 2] My registrar has updated my DNS records and they resolve to Google's servers. However my website still doesn't show when entered into a browser I get an NXDOMAIN error, which implies my domain doesn't exist. Does anyone have a basic example of what the Cloud DNS settings should look like? Do I need to setup A records or CNAME records?
[EDIT3] My setup is shown here (domain name and IP addresses have been faked for screenshot)
Thanks in advance.
Andy.
OK, I finally worked out the problem.
In the screenshot in my question the following changes were required.
1) Replace the A record for *.andtest.com.au with an A record for just andtest.com.au
2) Replace the www.andtest.com.au A record with a CNAME record for www.andtest.com.au which points to andtest.com.au
Now when I enter www.andtest.com.au in a browser, I see my Tomcat web page.
I'm having a problem using Facebook object debugger ( https://developers.facebook.com/tools/debug/og/object/ ) to scrape information from my page and i'm
getting the error "Could not resolve the hostname into a valid IP address." as you can see bellow
This website hosted in Azure, as an Web App.
Everything looks ok on the domain registrar, i have an A record pointing to the public IP and a CNAME pointing to xxx.azurewebsites.net.
You may want to try removing the A record and redirecting the root to www.
When requesting the Facebook/Graph API with a Facebook App, I get the error (#5) Unauthorized source IP address. Searching the internet I found that adding the server's IP to the app's whitelist may work. But when I do that, I get the following error: Uncaught OAuthException: This IP can't make requests for that application.
The server has definitely only the IP address I added to the whitelist. Using another server with the same app works just fine. I suppose this is due to a bug in our application requesting the API too often with invalid keys (all from this very IP).
So, to me, this seems like something we need to contact Facebook for, so our IP gets unlisted. Somebody has a idea on how to do it?
First, access canhazip.com or jsonip.com from the server to make sure it has the public IP you think it does. Second, make sure that IP address is in "Server IP Whitelist" for the app's Settings > Advanced section in the Developer console (https://developers.facebook.com/apps/[APP ID]/settings/advanced/).