Post Requests Are Executed Twice

[Henry Chang]

I am using python appengine, and it looks like something external (outside of my app) is making post requests executed twice.  Is anybody seeing this also?

Looks like something like this has happened before.

https://groups.google.com/forum/#!topic/google-appengine-downtime-notify/9fAYP7UyppQ

[ni...@apimetrics.io]

Not here, but if you're seeing the requests coming from a browser executing AJAX requests, note that they'll send a HEAD request for cross-site scripting security checks before sending the POST.