On 2 Aug 2010, at 11:50 AM, David Duncan wrote:
> On Aug 2, 2010, at 9:40 AM, Fritz Anderson wrote:
>
>> The didReceiveData: callback asserts that the data accumulator exists. In
>> certain circumstances (it seems to be with four of these requests started
>> nearly simultaneously), the assertion is triggered. self.dataAccumulator is
>> nil, and there is a significant amount of data coming in - 30K out of a 200K
>> image.
>
>
> It is unclear how you are managing having multiple requests. Do you have
> multiple instances of this class, or does -loadAsync just get called 4 times?
Yes, I have multiple instances of this class. Any one loader object has exactly
one NSURLConnection in its entire lifetime.
This is a loader for images in a table. Up to four image cells may be visible
at a time. When the table first appears, each visible cell creates a loader
object, and each of those initiates a download. Four downloads, but a loader
doesn't know about anything but its own NSURLConnection.
I think the parallel-download thing may be a red herring. And my "solution" may
simply have moved the expression of the bug somewhere I haven't found yet.
— F
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