Re: Detecting a closed connection

Timeouts, implmented in the application, not on the socket level.

Artur

On Mon, 10 Apr 2000, Jochen Stenzel wrote:

> Hello,
> 
> in a client/server system running on base of Event, I check for closed
> connections and remove all related data from the server process, inform
> other related clients and so on. This is done via an io read/error event
> watcher. The callback calls a function that first of all checks the
> handle/socket by fileno(). Quite simple, but it works perfectly if a
> client dies a usual way, e.g. by signal.
> 
> Now, it does NOT work if the client system is shut down by switching off
> its hardware. The server system does not recognize this (remote shells
> do not close etc.) So, there seems to be no catchable event. Are there
> known strategies to detect such cases?
> 
> Thanks in advance
> 
>                         Jochen
> 
>