How to check server connection on client side

[YtreioJ]

Hi,
How to check connection with remote server from the client side? Maybe something like ping, or from Qt networking? linux

[ODБOï]

@YtreioJ which server are you talking about ? what is the protocol ?

[YtreioJ]

Ip, i wanna something like ping in the console, which would return true, if server or tunnel is available

[Pablo J. Rogina]

@YtreioJ simply telnet to the host at the service port, if service is listening you'll have at least a connection... to check a Squid server is listening on port 3128 do:

telnet hostname/ip_address 3128

[YtreioJ]

@Pablo-J.-Rogina How to use it? From which library? Examples?

[ODБOï]

@YtreioJ One way to do it is to create your script and then execute it from your app using QProcess

can help : https://github.com/edhana/qt-ping-example

[YtreioJ]

@LeLev yes, i've tried to create external script with ping command, but how to make him return true/false

[ODБOï]

@YtreioJ said in How to check server connection on client side:

but how to make him return true/false

do you mean :
how to return true or false in your script ?
or
how your app will see the result of executed process ?

Could you please detail a bit more your questions every time ?

[YtreioJ]

@LeLev yeah, how my app will see the result?

[ODБOï]

@YtreioJ
check the official doc:
may be

//QByteArray QProcess::readAllStandardOutput()
QString output(theProcess.readAllStandardOutput());

[JonB]

@YtreioJ

@LeLev yes, i've tried to create external script with ping command, but how to make him return true/false

Have you looked at the docs for whatever external ping command you are using to see if perhaps its exit code tells you anything about success?