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