On Wed, 28 Feb 2007 19:04:25 -0300 "Benjamin Jackson" <[EMAIL PROTECTED]> wrote:
> Hey Zed, > > > Honestly, the idea of upload progress done this way (with polling http > > requests) is a super bad idea in my book. It's currently a hack to > > work around a broken UI in the browser, so I try not to steer people in > > this direction. > > > > What you should do, if you're interested, is contact Ezra at > > [EMAIL PROTECTED] as he does custom setups of this using Merb. If you > > want to do it yourself, http://merb.devjavu.com/ has example code in it > > that you can use. > > What would you suggest to someone who needs to allow clients to upload > files of more than a meg or two if not an upload progress script? It's > difficult to tell someone that they'll need to stare at their monitor > for a half hour to an hour while the upload churns on with no progress > :P First off, an upload of 2-3 mb won't take so long that you have to provide a second-by-second byte accurate feedback mechanism to them. A simple spinner graphic saying "just a moment" is most more than enough. If your application is such that you need absolute accuracy on progress, resumable uploads, validation of the upload, etc. then don't use HTTP. It doesn't do any of this and your app will have a mountain to climb over. If you need to simply provide a nice way to show progress of really large files (and again, HTTP wasn't designed for this so you're basically fixing a browser usability issue) then you should use flash. There's a few rather nice upload progress meters that don't use this stupid 2-second HTTP poll mechanism and just do what the rest of the world does: keep track of what's been sent over the socket. In other words, using repeated HTTP requests to ask the server what the browser has sent in a blow-by-blow accurate way so that you can show someone what's effectively a spinner for a few seconds or minutes is a dumb way to use HTTP. There's other much better tools, especially if you need to have the upload be reliable in any way. -- Zed A. Shaw, MUDCRAP-CE Master Black Belt Sifu http://www.zedshaw.com/ http://www.awprofessional.com/title/0321483502 -- The Mongrel Book http://mongrel.rubyforge.org/ http://www.lingr.com/room/3yXhqKbfPy8 -- Come get help. _______________________________________________ Mongrel-users mailing list [email protected] http://rubyforge.org/mailman/listinfo/mongrel-users
