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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
require('../common');
const assert = require('assert');
const net = require('net');
const debuglog = require('util').debuglog('test');
let chars_recved = 0;
let npauses = 0;
let totalLength = 0;
const server = net.createServer((connection) => {
const body = 'C'.repeat(1024);
let n = 1;
debuglog('starting write loop');
while (connection.write(body)) {
n++;
}
debuglog('ended write loop');
// Now that we're throttled, do some more writes to make sure the data isn't
// lost.
connection.write(body);
connection.write(body);
n += 2;
totalLength = n * body.length;
assert.ok(connection.bufferSize >= 0, `bufferSize: ${connection.bufferSize}`);
assert.ok(
connection.writableLength <= totalLength,
`writableLength: ${connection.writableLength}, totalLength: ${totalLength}`
);
connection.end();
});
server.listen(0, () => {
const port = server.address().port;
debuglog(`server started on port ${port}`);
let paused = false;
const client = net.createConnection(port);
client.setEncoding('ascii');
client.on('data', (d) => {
chars_recved += d.length;
debuglog(`got ${chars_recved}`);
if (!paused) {
client.pause();
npauses += 1;
paused = true;
debuglog('pause');
const x = chars_recved;
setTimeout(() => {
assert.strictEqual(chars_recved, x);
client.resume();
debuglog('resume');
paused = false;
}, 100);
}
});
client.on('end', () => {
server.close();
client.end();
});
});
process.on('exit', () => {
assert.strictEqual(chars_recved, totalLength);
assert.strictEqual(npauses > 2, true);
});
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