check if online

[-hans-]

Hi,

I'm not as close to network, networkprotocolls and co.

question:

Will this be a safe way to check if a user is 'online' (connected to the internet by wlan or lan or ...)

var myConnection = new Socket();
if(myConnection.open ("www.google.de:80")) {myConnection.close();}else{alert('Not connected.')}

[benjaminmueller_burda]

Hi,

• your code definitly works
• being able to connect to "google.de" is not a save definition of being "online".  Firewalls, Proxies etc can ruin your day. 
• rather check the connection to the online service you want to connect to (if that is google, forget what I said) .. 

Regards

b.

[-hans-]

hi,

I want to get sure that the dropbox can work ...is there a concrete way to check for connectivity of the dropbox¿

[benjaminmueller_burda · Accepted solution]

sure .. connect to the dropbox URL http://www.dropbox.com oder their API https://api.dropbox.com/ instead of connecting to google

[-hans-]

as easy ¿