text: 'use strict';
  
  const { mustCall, hasCrypto, skip } = require('../common');
  if (!hasCrypto)
    skip('missing crypto');
  const assert = require('assert');
  const { createServer, connect } = require('http2');
  const Countdown = require('../common/countdown');
  
  // This test ensures that `bufferSize` of Http2Session and Http2Stream work
  // as expected.
  {
    const SOCKETS = 2;
    const TIMES = 10;
    const BUFFER_SIZE = 30;
    const server = createServer();
  
    // Other `bufferSize` tests for net module and tls module
    // don't assert `bufferSize` of server-side sockets.
    server.on('stream', mustCall((stream) => {
      stream.on('data', mustCall());
      stream.on('end', mustCall());
    }, SOCKETS));
  
    server.listen(0, mustCall(() => {
      const authority = `http://localhost:${server.address().port}`;
      const client = connect(authority);
      const countdown = new Countdown(SOCKETS, () => {
        client.close();
        server.close();
      });
  
      client.once('connect', mustCall());
  
      for (let j = 0; j < SOCKETS; j += 1) {
        const stream = client.request({ ':method': 'POST' });
        stream.on('data', () => {});
        stream.on('close', mustCall(() => {
          countdown.dec();
        }));
  
        for (let i = 0; i < TIMES; i += 1) {
          stream.write(Buffer.allocUnsafe(BUFFER_SIZE), mustCall());
          const expectedSocketBufferSize = BUFFER_SIZE * (i + 1);
          assert.strictEqual(stream.bufferSize, expectedSocketBufferSize);
        }
        stream.end();
        stream.close();
      }
    }));
  }
  