How to catch node.js http error on nonexistent host?

Question

when I'm trying to use the http module to access nonexistent host, like this:

requestToRemote = http.createClient(80, 'fjasdfhasdkfj.vvvxcz').request(
    method,
    path,
    headers
);

But I get the following error:

node.js:201
        throw e; // process.nextTick error, or 'error' event on first tick
              ^
Error: getaddrinfo ENOENT
    at errnoException (dns.js:31:11)
    at Object.onanswer [as oncomplete] (dns.js:140:16)

I'd like to catch this error, so I've tried try/catch and setting the error listeners of a bunch of request properties, but none of if worked. How can I catch the error?

Answer 1

Looks like the error is thrown from http.Client, not the request. How about something like:

var site = http.createClient(80, host);
site.on('error', function(err) {
    sys.debug('unable to connect to ' + host);
});
var requestToRemote = site.request(...);

FYI, http.createClient has been deprecated -- the following should work using the get convenience method:

http.get({host: host}, function(res) {
    ...
}).on('error', function(e) {
    console.log("Got error: " + e.message);
});