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Editorial Team
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Asked: 2026-06-06T00:32:59+00:00

I’ve got RestKit in my iPhone app interacting with a Rails app on Heroku,

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I’ve got RestKit in my iPhone app interacting with a Rails app on Heroku, but RestKit won’t seem to work with the Rails app running locally on my machine. Here’s the output in my iPhone app:

Fail: Error Domain=NSURLErrorDomain Code=-1004 "Could not connect to the server." NSErrorFailingURLKey=http://0.0.0.0:3000/users/1.json, NSUnderlyingError=0x2a9690 "Could not connect to the server."}

I’ve done all the sanity checks. http://0.0.0.0:3000/users/1.json returns a JSON object in my browser and when I change the root URL to the app on Heroku, RestKit works fine.

Is there something I’m missing? How do I get RestKit to work with the local version of my app?

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1 Answer

  1. Editorial Team

    This was a dumb error on my part. An app running on a device obviously can’t access a rails app running on localhost.

    This works fine in the simulator or when pointed to a production server.

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