Mina uses the handlers sessionClosed(...) to indicate the connection is terminated. That should get called if Mina gets a TCP FIN (connection close) sent to it.
If your looking for more robust detection that is not possible. The connection will appear "normal" until you go to use it. The data sent over the connection could be either normal data or the keep-alive messages. The keep-alive messages just make sure the connection gets used every so often. This helps detect connection problems even if your application is "idle". This is not a limitation of Mina or Java. C applications have the same problem. Rob ----- Original Message ---- From: Yigal Rachman <[EMAIL PROTECTED]> To: [email protected] Sent: Wednesday, August 15, 2007 12:47:22 PM Subject: Re: How to get MINA to detect a lost connection? Hi, Mat: Thanks for your amazingly quick response! DIRMINA-354 appears to refer to the issue of a "keep-alive" message, which is great if both sides can cooperate on this. My problem is that the instrument uses a proprietory third-party protocol, over which I have no control. The instrument expects to be left alone while it is doing its job. I was hoping that MINA has some way to detect the loss of the connection, as happens with "normal" socket programming. Yigal mat wrote: https://issues.apache.org/jira/browse/DIRMINA-354 On 8/16/07, Yigal Rachman <[EMAIL PROTECTED]> wrote: Hi, Folks: I have an instrument driver that is built on MINA. During normal operation, it does not write to the instrument, but just listens for input from the instrument. This part works flawlessly with very little coding on my part (thanks to MINA). There is one glitch: if the socket connection is ever lost, the driver continues to think it is connected because MINA does not close the session. Any ideas how I can get this to work properly? Thanks in advance, Yigal Rachman DMAS Data Acquisition Developer NEPTUNE Canada University of Victoria, Victoria, BC, Canada www.neptunecanada.ca ____________________________________________________________________________________ Yahoo! oneSearch: Finally, mobile search that gives answers, not web links. http://mobile.yahoo.com/mobileweb/onesearch?refer=1ONXIC
