williamshome

I got a problem when i am connecting a flash application in a smartphone (windows mobile 5) to my max/msp program sitting on a PC.

Things works fine when first connecting, but when i disconnect it, therefore xmlsocket.close(), an error message pop out in max window.

?error: flashserver: recv() failed with -1

?error: flashserver: receive: 參數錯誤。(

Plus, I can see that the network performance (wireless LAN) seems to decay too.

?error: flashserver: recv() failed with -1
?error: flashserver: receive: 參數錯誤。(

flashserver-and-smartphone

> I got a problem when i am connecting a flash application in a smartphone (windows mobile 5) to my max/msp program sitting on a PC.

> Things works fine when first connecting, but when i disconnect it, therefore xmlsocket.close(), an error message pop out in max window.

> ?error: flashserver: recv() failed with -1

> ?error: flashserver: receive: 參數錯誤。(

This 'just' means that flashserver was trying to read data from the 

socket while the connection got closed. The recv() call is scheduled in 

regular intervals. If there's already one scheduled and the connection 

is closed, it might be already too late to cancel the read, thus you get 

a failed read on a socket which doesn't exist any longer. - A future 

version of flashserver will hopefully address this problem, if ever find 

If you get this error on EVERY close there there seems to be something 

else going on. It could be that flash is not disconnecting properly. In 

order to figure that out, send flashserver a message 'interval 5000'. 

This sets the poll time to 5 seconds, so it's now only checking for 

input every 5 seconds. Then close the connection and have a look whether 

the number box that indicates the number of connected clients decrements 

it's number immediately. If it does change only after a short time and 

you still get the error, then I would say that Flash is not properly 

> Plus, I can see that the network performance (wireless LAN) seems to decay too.

Sure? This would really surprise me. flashserver closes the connection 

after the failed read, so at least after the error message everything 

williamshome wrote:
> Hi all,
>
> I got a problem when i am connecting a flash application in a smartphone (windows mobile 5) to my max/msp program sitting on a PC.
>
> Things works fine when first connecting, but when i disconnect it, therefore xmlsocket.close(), an error message pop out in max window.
>
> ?error: flashserver: recv() failed with -1
> ?error: flashserver: receive: 參數錯誤。(

This 'just' means that flashserver was trying to read data from the 
socket while the connection got closed. The recv() call is scheduled in 
regular intervals. If there's already one scheduled and the connection 
is closed, it might be already too late to cancel the read, thus you get 
a failed read on a socket which doesn't exist any longer. - A future 
version of flashserver will hopefully address this problem, if ever find 
the time to code it...
If you get this error on EVERY close there there seems to be something 
else going on. It could be that flash is not disconnecting properly. In 
order to figure that out, send flashserver a message 'interval 5000'. 
This sets the poll time to 5 seconds, so it's now only checking for 
input every 5 seconds. Then close the connection and have a look whether 
the number box that indicates the number of connected clients decrements 
it's number immediately. If it does change only after a short time and 
you still get the error, then I would say that Flash is not properly 
closing the connection.

Sure? This would really surprise me. flashserver closes the connection 
after the failed read, so at least after the error message everything 
should immediately go 'back to normal'.

As you said, I have tried to have a longer interval. In "interval 5000", yes, no more error; but in other smaller value, even 4500, the error still appear. However, it can be concluded it is related to the netoworking property of Wifi on smartphone. (It is because I never see this error on PC-to-PC connection)

Sorry on misleading, I was testing the respond time on PC-to-smartphone. At first, it takes only a round-trip time ~15ms, while when times go, it would suddently jump to ~60ms or even ~90ms.

I guess it is most likely related to the Wifi property, while I wish some smart guy here might have experience on solving it.

As you said, I have tried to have a longer interval. In "interval  5000", yes, no more error; but in other smaller value, even 4500, the error still appear. However, it can be concluded it is related to the netoworking property of Wifi on smartphone. (It is because I never see this error on PC-to-PC connection)

Flashserver and smartphone