Upload of binary files

[Peter Hansen]

Irmen de Jong wrote:
> 
> Peter Mott wrote:
> > if form.has_key("Data"):
> >     fileinfo=form["Data"]
> >     data = fileinfo.file.read()
> 
> This won't do. It is not guaranteed that a single read() returns
> all of your data. 

Since when?  I know with sockets you don't get a guarantee that
recv() gets all the data, but the docs on read() for a file 
object say:

  read ([size]) 
  Read at most size bytes from the file (less if the read hits EOF before 
  obtaining size bytes). If the size argument is negative or omitted, 
  read all data until EOF is reached. 

That reads like a guarantee to me.  Do I have to go and wrap all 
our code that uses read() with a retry loop?

-Peter