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Asked: 2026-05-23T00:46:01+00:00

I am writing a Windows Phone 7 app that interfaces with my GAE backend.

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I am writing a Windows Phone 7 app that interfaces with my GAE backend. For a certain request, the WP7 client claims a 500 error is returned. I see that request in my GAE logs plain as day, correct contents, time, user agent, everything matches and no errors of any kind, the resulting http code is 200, according to the logs. But the wp7 app sees a 500.

I don’t know where to start – I don’t see how the GAE logs could be wrong, but I don’t get how the WP7 app could be wrong either. I’m not running fiddler or anything of the sort.

I don’t know where to start with this one…

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1 Answer

  1. Editorial Team

    Problem solved, apologies to WP7, it was not at fault. What was happening was that I was returning a blobstore blob from GAE that did not exist. The GAE logs show this as a 200, but with a 0kb reply size, which is what eventually tipped me off. Would be nice if the logs showed this as the 500 that is in reality being returned.

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