Check connection and timeout

[Bob Sneidar]

Hi Ludovic. 

I use a simple method of sockets to determine if I have a connection to a host. I close the socket first: 

closeSocket 127.0.0.1:3306

Then I open the socket:

Open socket to 127.0.0.1:3306
Put the result into tError

If terror begins with “ERROR: “ then
   — your code here
End if

Then close the socket again. 

Close socket 127.0.0.1:3306

I find this to be the most reliable way to check a connection. I may not have internet, but the host may not be on the internet it may be local. Also, sockets will always work whereas ICMP can be blocked by a firewall. And simply trying to connect to a host will, as you have noticed bring timeouts into play. 

Bob S



> On Jul 13, 2023, at 11:26 PM, Ludovic THEBAULT via use-livecode <use-livecode at lists.runrev.com> wrote:
> 
> Hello,
> 
> I use this code to check is there is an internet connection :
> 
> tsNETSETTIMEOUTS 60,0,2000,60000,5,1000
> 
> put tsNetHeadSync("https://google.com/", tHeaders, tResult, tBytes) into tRecvHeaders
> 
>   if tResult begins with "tsneterr:" then
>      return false 
>   else
>      return true 
>   end if
> 
> 
> But the setting for the timeout of tsNETSETTIMEOUTS is not active, I always have a 30 seconds timeout.
> 
> Is there an other settings ?
> 
> Thanks.
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