Fiddler

Use Fiddler to debug urlfetch requests in Google AppEngine

We use a lot of web crawling to get data from third-party websites. Some crawling is not as easy as just a simple GET request, so we have to send specific POST data, cookies and HTTP headers. And all this needs to be debugged. Fiddler2 is the gold standard for web debugging tools, so I'd like to use it in this case too.

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