Is there any way to detect network disconections on a Tcpip socket (SO

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Question

Le chuck gp · Jan 25, 2017

#Caché

I've already tryed

- writing in the sockect

- disconnect it after a predefined period of inactivity

I would like to know if there is another way to do it

Discussion (2)0

Vitaliy Serdtsev · Jan 25, 2017

Try to use high level interface to work with sockets: %IO.Socket, %IO.SocketCommon.

Look on %SYSTEM.INetInfo.Connected() [aka $ZUTIL(189)] or you can use tools of OS [for example see source code %SYSTEM.INetInfo.CheckAddressExist()]

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Alexey Maslov · Jan 27, 2017

You may also want to try Monitoring for Disconnect Mode (D mode)
(http://docs.intersystems.com/latest/csp/docbook/DocBook.UI.Page.cls?KEY=...).
This mode prevents a Caché process from silent halting on disconnect, which occurs by default when the socket device is the process $principal. D mode garranties that process's error trap code will handle <DISCONNECT> errors anyway.

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Is there any way to detect network disconections on a Tcpip socket (SO independent)