http.get, how to detect internet shut down?

[DrakaSAN]

function download (url, file, callback) {
http.get(url, function (res) {
res.pipe(file, {end: 'false});
res.on('end', function () {
file.end();
callback(file.path);
});
}).on('error', function (err) {
offline(err);
});
}

If internet is shut down before the http.get, it trigger the error with ENETUNREACH as err, and I can handle it. But if I shut down internet while the file is being downloaded, the connection just hang until it is back on (and usually crash when so).

Is there a way to detect that internet is shut down in the middle of the download?

[tjfontaine]

TCP will timeout eventually and the next time you tried to write or read you would get an ECONNRESET or EPIPE -- but if you want to be more aggressive you can use req.setTimeout or res.setTimeout and if data hasn't traversed in that time frame it will fire a timeout event.

This kind of question though is more suited for irc or the mailing list.

Thanks for using node!