Hi,
I'm trying to use asynManager isConnected() to test whether or not an IP port is connected to a device. But I'm finding that isConnected() only seems to report the connected status of the asynUser structure to the underlying device.
If I attempt to call drvAsynIPPort on an IP address that has nothing connected to it, the connection fails. Then I attempt to connect an asynUser to this port using asynOctetSyncIO connect(), which also fails. Then I call asynManager isConnected a few times, and I find that the first few calls return false, and then after iocInit it returns true. But still, in the background, asynManager is attempting to connect to the IP port via the autoConnect feature.
Is this behaviour correct?
I can get around it by maintaining connected status myself. But the documentation seems to indicate that isConnected() shouldn't return true if the IP port is not connected.
Also, if I call asynOctetSyncIO writeRead, with a 5s timeout, I find it blocks forever if the IP port is not connected.
Any ideas?
Cheers,
Matt
--
This e-mail and any attachments may contain confidential, copyright and or privileged material, and are for the use of the intended addressee only. If you are not the intended addressee or an authorised recipient of the addressee please notify us of receipt by returning the e-mail and do not use, copy, retain, distribute or disclose the information in or attached to the e-mail.
Any opinions expressed within this e-mail are those of the individual and not necessarily of Diamond Light Source Ltd.
Diamond Light Source Ltd. cannot guarantee that this e-mail or any attachments are free from viruses and we cannot accept liability for any damage which you may sustain as a result of software viruses which may be transmitted in or with the message.
Diamond Light Source Limited (company no. 4375679). Registered in England and Wales with its registered office at Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, United Kingdom
- Replies:
- RE: asynManager isConnected Mark Rivers
- Re: asynManager isConnected J. Lewis Muir
- Navigate by Date:
- Prev:
Re: waveform of STRING memory structure Pavel Masloff
- Next:
mbbi/mbbo Mask values Dudley, David
- Index:
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
<2012>
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
- Navigate by Thread:
- Prev:
Re: waveform of STRING memory structure Pavel Masloff
- Next:
RE: asynManager isConnected Mark Rivers
- Index:
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
<2012>
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
|