node-dnserrors
Exposes a function mapping DNS errors to DnsError objects.
The defined DnsError objects are created via createerror.
Installation
Make sure you have node.js and npm installed, then run:
npm install dnserrors
Usage
The primary use case is wrapping errors originating from dns operations:
var dns = require('dns');
var dnsErrors = require('dnserrors');
dns.lookup('qovwiejiqvwiejvoqwevqwev.com', function (err) {
var dnsError = dnsErrors(err);
console.warn(dnsError.toString()); // ENOTFOUND: getaddrinfo ENOTFOUND
});
Other errors will be marked as not being dns errors:
var dnsErrors = require('dnserrors');
var err = new Error();
var dnsError = dnsErrors(err);
if (dnsError.NotDnsError) {
// what am I?
}
Mappings
The following is a list of dns errors mapped by this module:
- ENODATA (mapped to 404)
- EFORMERR (mapped to 400)
- ESERVFAIL (mapped to 502)
- ENOTFOUND (mapped to 404)
- ENOENT (mapped to 404)
- ENOTIMP (mapped to 501)
- EREFUSED (mapped to 403)
- EBADQUERY (mapped to 400)
- EBADNAME (mapped to 400)
- EBADFAMILY (mapped to 400)
- EBADRESP (mapped to 502)
- ECONNREFUSED (mapped to 502)
- ETIMEOUT (mapped to 504)
- EEOF (mapped to 500)
- EFILE (mapped to 500)
- ENOMEM (mapped to 500)
- EDESTRUCTION (mapped to 500)
- EBADSTR (mapped to 400)
- EBADFLAGS (mapped to 400)
- ENONAME (mapped to 400)
- EBADHINTS (mapped to 400)
- ENOTINITIALIZED (mapped to 500)
- ELOADIPHLPAPI (mapped to 500)
- EADDRGETNETWORKPARAMS (mapped to 500)
- ECANCELLED (mapped to 500)
License
3-clause BSD license -- see the LICENSE file for details.