Um, Jeff, you missed the point: the mozilla IMAP connection does not hang when PPP is lost.
On Tue, 2002-11-19 at 10:12, Jeffrey Stedfast wrote: > On Tue, 2002-11-19 at 13:01, Scott Otterson wrote: > > Well, first, although the IMAP on 1.2 is supposed to be faster than > > 1.08, several of us have said that IMAP is actually slower. Seems like > > this information would interest Ximian but on this list, anyway, it > > doesn't seem to be making much of an impression. > > > > Second, if a persistent tcp connection causes evolution to hang, then > > maybe evolution shouldn't be using one. > > this is why there's POP :-) > > IMAP, by definition, uses a persistent tcp connection. > > > > > On reading your response, my first thought was, "Boy, linux must be > > lame," because on Windows, nothing hangs when you lose your PPP -- not > > outlook, not mozilla, not anything as far as I know. > > wonderful about those win32 apis for finding out when the connection > goes down. Not available on linux. > > > But then I fired > > up mozilla on linux and found that it too survives having the modem > > unplugged: Read IMAP mail, unplug the modem, plug it back in again, > > reconnect, and mozilla is fine; for the same sequence, evolution hangs. > > > > So what does mozilla use that works better than a persistent tcp > > connection and should evolution be using that instead? > > HTTP != persistent tcp stream. IMAP == persistent tcp stream. > > HTTP connects, does a fetch, and then closes the connection. (well, HTTP > 1.1 can have persistent streams to avoid > connect/disconnect/connect/disconnect but that's another issue). > > IMAP connects and stays connected until the user explicitly logs off. > This is why I also mentioned that ssh (which also uses a persistent tcp > connection) also hangs for like 10 minutes. > > If you don't like the wait, you are free to modify your kernel or submit > a patch to evolution. > > Jeff > > > > > Scott > > > > On Mon, 2002-11-18 at 12:45, Jeffrey Stedfast wrote: > > > On Mon, 2002-11-18 at 13:50, Scott Otterson wrote: > > > > Yeah, I'd have to agree. IMAP is _much_ slower -- takes way longer to > > > > start up for the first time and if you disconnect, it's way slower to > > > > reconnect. > > > > > > > > The connection also hangs if my PPP dialup goes down -- I have to run > > > > killev before it can see email again. This is the only network app I > > > > have that hangs when I loose PPP. > > > > > > I'm guessing you don't run any other apps that use a persistent tcp > > > connection then :-) > > > > > > fyi I am almost always connected to remote sites with ssh and irc, etc > > > and so when my internet connection drops, all those apps hang just as > > > long as Evolution does. > > > > > > Jeff > > > > > > PS: No, netscape/mozilla do not hold persistent tcp connections. -- Scott Otterson <[EMAIL PROTECTED]> _______________________________________________ evolution maillist - [EMAIL PROTECTED] http://lists.ximian.com/mailman/listinfo/evolution
