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Posted: **Fri Feb 07, 2020 12:09 am**

LC 9.6.0 DP2
OSX 10.14.6
Android 7

Trying to find out in a standalone if there is an internet connection, I am doing this on a function:

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  put url "http://www.google.com" into tURL
if tUrl is empty then...no connection

While it works fine on OSX and iOS, on Android it locks the script for up to 30 seconds (I disabled wifi in order to test this).
I tried to add a

Code: Select all

 set the socketTimeoutInterval to 1000

but apparently things don't change.

Off course, if I enable wifi, everything works fine.

Why is this? How differently can I do it?
Thankyou

Posted: **Fri Feb 07, 2020 10:20 am**

Heya Trevix,

You might try giving this lesson a read, it explains the differences between 'put' and 'load' (blocking and non-blocking) url usage.

If you decide to continue to use 'put' instead, I think I'd check the result, instead of whether the variable has information or not. There might be any number of reasons aside from connectivity that would leave the variable empty, the result will tell you why it is empty.

Edited to give you a picture illustrating what I mean, This machine is obviously connected ( I am posting on it ), but duckduckgo doesn't load using Lc 6.5 because of the antiquity of protocol used in 6.5, not because the network is down.

: Just something to think about...

Posted: **Fri Feb 07, 2020 10:48 am**

Thanks for the help.
I think I solved as you suggested, putting this in the stack script:

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local sConnectionTrue = false

on OpenStack
     if the environment is "development" and  there is a stack "revStandaloneProgress" and the mode of stack "revStandaloneProgress" > 0 then
          exit OpenStack 
     end if
     breakpoint
     put "No connection" into fld "FldResult"
     send "CheckConnection" to me in 100 milliseconds
end OpenStack

command CheckConnection
     put false into sConnectionTrue
     repeat with U = 1 to 10
          if sConnectionTrue  then 
               put  "Connected" into fld "FldResult"
               beep
               exit CheckConnection
          end if
          load URL ("http://www.google.com") with message "UrlReceived"
          wait 500 milliseconds with messages
     end repeat 
     put "No connection found" into fld "FldResult"
end CheckConnection

On UrlReceived pURL, pURLStatus
     if pURLStatus is "cached" then
          put true into sConnectionTrue
          unload url pURL
     else
          put libURLErrorData(pURL) into theError
          set the text of field "FldResult" to "An error occurred:" & cr & theError & "."
     end if
end UrlReceived

Any further suggestions are welcomed.
Trevix

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Checking internet connection is blocking

Checking internet connection is blocking

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Re: Checking internet connection is blocking