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cimbalino / Cimbalino-Phone-Toolkit

Cimbalino Windows Phone Toolkit
MIT License
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MarketplaceInformationService.WebRequestEndGetResponse throws System.Xml.XmlException #45

Closed emaori closed 10 years ago

emaori commented 10 years ago

Sometime this code throws an exception:

                var _informationService = new MarketplaceInformationService();
                var result = await _informationService.GetAppInformationAsync();

The exception message is: System.Xml.XmlException: '', hexadecimal value 0x1F, is an invalid character. Line 1, position 1.

Unfortunately I am not able to reproduce this error but it happens to 28% of my users app

pedrolamas commented 10 years ago

This specific service does a web request expecting a response with XML, so the content should start with a < char.

Seeing 0x1f mentioned on the error as being the start byte seemed familiar to me... and gzip does use 0x1f 0x8b as header!

So the only thing I could think of is some weird proxy/firewall that does something to the response so the phone doesn't properly g-unzip it automatically.

It's the first time I actually see something like this, but at this point I don't think there is any way of fixing it... :\