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Composite Stream Wrapper providing partial MemoryStream and full original Stream

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问题 Does anyone know of a composite stream solution that will pre-load the first portion of a Stream in to a MemoryStream and keep the remainder as the original Stream which will be accessed when subsequent parts are required as necessary? I should imagine some wrapper class would implement the Stream interface and transparently juggle the access between the two streams depending upon which part is accessed. I'm hoping this is a solution someone may have solved before, maybe to optimize

Using a custom stream wrapper as test stub for PHP's http:// stream wrapper

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问题 I'm writing a custom stream wrapper to use as a stub in unit tests for an HTTP client class that uses the built-in http:// stream wrapper. Specifically, I need control over the value returned in the 'wrapper_data' key by calls to stream_get_meta_data on streams created by the custom stream wrapper. Unfortunately, the documentation on custom stream wrappers is woeful and the API seems unintuitive. What method in a custom wrapper controls the the meta wrapper_data response? Using the class at

Composite Stream Wrapper providing partial MemoryStream and full original Stream

阅读更多关于 Composite Stream Wrapper providing partial MemoryStream and full original Stream

Does anyone know of a composite stream solution that will pre-load the first portion of a Stream in to a MemoryStream and keep the remainder as the original Stream which will be accessed when subsequent parts are required as necessary? I should imagine some wrapper class would implement the Stream interface and transparently juggle the access between the two streams depending upon which part is accessed. I'm hoping this is a solution someone may have solved before, maybe to optimize performance of reading a large FileStream. In my case I'm trying to get around a Windows Phone 8 bug reading