[Zope] PDF needs ExternalFile Object with byte-range capability?

[Jim Fulton]

Brad Clements wrote:
> 
> I need to start serving large .PDF files from my ZopeHTTPServer.
> 
> I'm thinking that I'd rather not put the actual data into bobo.

Why?

> Does anyone have an ExternalFile object?
> 
> Also, I'd like to support byte-range serving.

Is this a high priority?  There is some possibility
that we might implement this in ZServer at some point.
Then again, perhaps it would be better to do this for 
Files (and Images) directly.

> I'm thinking that I could
> modify Image.py File class, in index_html check to see if REQUEST
> has a byte-range heading, if so use a range on self.data, as in return
> self.data[startoffset:endoffset]

I'm interested to see what you come up with.  It should apply to
Files too.
 
> I'd also have to set RESPONSE headers. I'm concerned about getLen
> and len methods. Are they used to set the content-length response
> header? If I set a content-length header myself will that over-ride Zope's
> default process of setting the length?

Yes.

Jim

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