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'use strict';
const common = require('../common');
const assert = require('assert');
const dgram = require('dgram');
const client = dgram.createSocket('udp4');
const chunk = 'abc';
let received = 0;
let sent = 0;
const limit = 10;
let async = false;
let port;
function onsend() {
if (sent++ < limit) {
client.send(chunk, 0, chunk.length, port, common.localhostIPv4, onsend);
} else {
assert.strictEqual(async, true, 'Send should be asynchronous.');
}
}
client.on('listening', function() {
port = this.address().port;
setImmediate(function() {
async = true;
});
onsend();
});
client.on('message', function(buf, info) {
received++;
if (received === limit) {
client.close();
}
});
client.on('close', common.mustCall(function() {
assert.strictEqual(received, limit);
}));
client.bind(0);
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