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37 lines
1001 B
37 lines
1001 B
'use strict';
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var common = require('../common');
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var mustCall = common.mustCall;
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var assert = require('assert');
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var dgram = require('dgram');
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var dns = require('dns');
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var socket = dgram.createSocket('udp4');
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var buffer = new Buffer('gary busey');
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dns.setServers([]);
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socket.once('error', onEvent);
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// assert that:
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// * callbacks act as "error" listeners if given.
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// * error is never emitter for missing dns entries
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// if a callback that handles error is present
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// * error is emitted if a callback with no argument is passed
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socket.send(buffer, 0, buffer.length, 100,
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'dne.example.com', mustCall(callbackOnly));
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function callbackOnly(err) {
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assert.ok(err);
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socket.removeListener('error', onEvent);
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socket.on('error', mustCall(onError));
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socket.send(buffer, 0, buffer.length, 100, 'dne.example.com');
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}
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function onEvent(err) {
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assert.fail(null, null, 'Error should not be emitted if there is callback');
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}
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function onError(err) {
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assert.ok(err);
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socket.close();
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}
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