Re: nsIStreamObserver changes?

[Doug Turner]

OnStart is called now without any status because nothing has happened 
yet.  It is an notification that tells the observers "get ready".  One 
can expect an OnStop to tell us if things went sucessful or if the 
transaction failed.  Today, if we fail to connect to the remote server 
(because of a DNS problem) the OnStop (not the OnStart) is called to 
tell us what happened. 

What would passing a status in OnStart buy us?  What kind of errors do 
we expect to throw here?