twitter/CocoaSPDY — pull request #24 by lingmingyb (2014-01-14 10:35:20+00:00)
Title: fix data pollution issue

The data buffer should be copied in advance in case _currentReadOp->_buffer being polluted(This bug can be reproduced easily using a single NSURLConnection App).

I thought https://github.com/twitter/CocoaSPDY/issues/23 was related with this issue.