Dan, You might consider something more accurate like comparing MD5/SHA-1 hashes of the two files (local and remote) instead of timestamps because clocks can be changed on each system and/or be out-of-synch. Of course, if you use MD5/SHA-1 hash, you must download the whole remote file to calculate that value (or, alternatively, upload the hash as a small separate file whenever the full calendar is uploaded. You then only need to download a small file to access the calendar's hash).
--- Dan Lee <[EMAIL PROTECTED]> wrote: > Does anyone know of a way to get the timestamp for a remote file? > > For our project ReminderFox we have code to download/upload a > calendar > file via FTP or WebDAV. We would like to do this automatically and > be > smart about it -- that is, only have to download the remote calendar > file if it actually differs from the file on the local system. I > thought > the best way would be to check the timestamp of the remote file, but > I > am not sure how this can be done. > For downloading the file, I was utilizing code of this sort: > > var ioService = > Components.classes["@ > mozilla.org/network/io-service;1"].getService(Components.interfaces.nsIIOService)<http://mozilla.org/network/io-service;1%22%5D.getService%28Components.interfaces.nsIIOService%29> > ; > this.streamLoader=Components.classes["@ > mozilla.org/network/stream-loader;1"].createInstance(Components.interfaces.nsIStreamLoader)<http://mozilla.org/network/stream-loader;1%22%5D.createInstance%28Components.interfaces.nsIStreamLoader%29> > ; > this._channel = ioService.newChannelFromURI( aURI ); > if(aURI.scheme=="http" || aURI.scheme=="https") > this._channel.loadFlags |= > Components.interfaces.nsIRequest.LOAD_BYPASS_CACHE; > this.streamLoader.init(this._channel, this , null); > > Since it's just dealing with streams, I am not sure if there's any > way > to get the timestamp of the file that the stream was created from. > Has > anyone done anything similar or having any ideas of how I could do > this? > > Thanks. > > _______________________________________________ > Project_owners mailing list > [email protected] > http://mozdev.org/mailman/listinfo/project_owners > __________________________________________ Yahoo! DSL Something to write home about. Just $16.99/mo. or less. dsl.yahoo.com _______________________________________________ Project_owners mailing list [email protected] http://mozdev.org/mailman/listinfo/project_owners
