[Zope-dev] Are input streams seekable in Zope?

Hi, I've stumbled over some code in Zope 2.7.0 that seems to suggest that input streams are meant to be seekable. In an extension I wrote for ZServer, i.e. AJPServer, I throw an exception when this is tried and I'm quite sure the call to seek wasn't there in 2.6.x. I found the call to seek in ZPublisher.HTTPRequest.py, line 128, in method "retry". Does this mean that only seekable streams are allowed in ZPublisher (i.e. not stdin) or is this a bug? TIA, andreas