w4a do not detect the closed server connection

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w4a do not detect the closed server connection

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This is expected for any VoIP client using unreliable connection (e.g UDP). 
It's possible to send keepAlive messages but I don't think it worth it

Original comment by [email protected] on 12 Nov 2012 at 10:10

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It is not related to keepalive at all - it is related to socket close event 
that is missed by w4a. The keepalive problem is separated w4a issue that will 
be posted in a few minutes.

Original comment by [email protected] on 12 Nov 2012 at 10:12

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Original comment by [email protected] on 12 Nov 2012 at 10:19

• Changed state: Duplicate

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"it is related to socket close event" -> UDP socket close at server side for 
signaling?

Original comment by [email protected] on 12 Nov 2012 at 10:20

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Don't forget that w4a use UDP instead of websocket transport which means no 
"close event" will be triggered.

Original comment by [email protected] on 12 Nov 2012 at 10:27

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This w4a bug is not related to signaling, more to keepalive one. Please see, 
for example :

http://stackoverflow.com/questions/4956940/how-to-know-socket-client-got-disconn
ected

Original comment by [email protected] on 12 Nov 2012 at 10:34

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Sorry but I don't understand what you are trying to demonstrate. Do you mean 
it's possible to now that the server is down when using UDP without sending any 
packet? Sorry to ask such trivial question but I'm a bit lost with the link 
you're providing which is about TCP.

Original comment by [email protected] on 12 Nov 2012 at 10:42

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Sure it is not existed for UDP - this "close" event need to be detected somehow.

Original comment by [email protected] on 12 Nov 2012 at 10:42

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Ok, seems like OPTIONS support from the server is sufficient here.

Original comment by [email protected] on 12 Nov 2012 at 10:53