How to set up facebook callback url?

问题:

How do I setup a Canvas payments callback url? I only need to set up for static pricing at this time within my app. Facebook requires a Payments Object under "Realtime Updates" heading. I have been searching everywhere for a simple straight example on how to do the complete process but have not been able to find one. I have been working through the Unity3d Friendsmash example project.

回答1:

I haven't found much information on the callback, but since I don't really use it, I just used this code inside a PHP script to just make it work:

$hub_mode = $_GET['hub_mode'];
$hub_challenge = $_GET['hub_challenge'];
$hub_verify_token = $_GET['hub_verify_token'];
if ($hub_verify_token =='YourToken')
{
    echo $hub_challenge;
}

回答2:

I found the problem! I was using Parse which does not host php pages. I put my file on my bluehost account and it now works! My app can now show the pay dialog on Facebook using the callback url I gave it.