Listening to breakpoints from a different host with Xdebug

I'm building an application in Ember.js and I am debugging the PHP API remotely. It is working when I enable the cookie for XDebug, set a breakpoint, and then run the code. The breakpoint hits and I get all the debugger data in my IDE (PHPStorm) correctly.

In order to access the API from Ember, I have to use ember-cli with a proxy. The XDebug cookie is getting passed through the proxy, but requests that I make through Ember do not hit breakpoints in my IDE. I think this is due to the fact that XDebug sees the ember-cli request as coming from the remote server, rather than my development machine. Is there a way for me to get debugging to work for requests that go through the ember-cli proxy? I have to use the proxy instead of going directly to the API from the browser due to cross site browser security issue (ember-cli is running on port 4200 on the server and the API is on port 80).

I have pydbgpproxy running and PHPStorm is working with that as well, but even though the session for the requests going through ember-cli and the requests going from my machine directly to the API are the same key, I think it's still differentiating between the requesting machine's address.

Thank you!