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'use strict';
const common = require('../common');
const assert = require('assert');
const dgram = require('dgram');
const client = dgram.createSocket('udp4');
const buf = Buffer.alloc(256, 'x');
const offset = 20;
const len = buf.length - offset;
const onMessage = common.mustCall(function messageSent(err, bytes) {
assert.ifError(err);
assert.notStrictEqual(bytes, buf.length);
assert.strictEqual(bytes, buf.length - offset);
client.close();
});
client.bind(0, () => client.send(buf, offset, len,
client.address().port,
onMessage));
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