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[REBOL] Re: Checking for broken connections

From: sqlab:gmx at: 4-Nov-2003 8:47

> Ok, I asked this question a while ago and got some good answers, but a > scenario has risen that I wasn't counting on before, and the previous > solution doesn't work. > > Suppose you have a sever running: > s: open/lines/no-wait tcp://:8000 > v: first s > > And a client: > c: open/lines/no-wait tcp://ip-address:8000 > > well if the client connection closes either because rebol closed down or > the > connection was closed with a 'close c' command, you can check if the > client > is still connected or not using 'check: copy v' on the server end and as > long as it doesn't return 'none', the connection is still active. > > Well I discovered today that if the client computer turns off abrubtly > (say > >from a power outage) or crashes, that the connection will still come back > as > active using this approach. Even though the remote computer is turned off > > (obviously disconnected) a copy on the server does not return 'none'. > Does > anyone know a solid way to check for this under such circumstances?? > > Matt >
Hello Matt you can try to set the keep-alive option. set-modes s [keep-alive: true] and see if you get an event indicating the closure. If not, you must provide your own time out action. AR -- NEU FÜR ALLE - GMX MediaCenter - für Fotos, Musik, Dateien... Fotoalbum, File Sharing, MMS, Multimedia-Gruß, GMX FotoService Jetzt kostenlos anmelden unter +++ GMX - die erste Adresse für Mail, Message, More! +++