node/test/parallel/test-http2-max-concurrent-streams.js

'use strict';

const common = require('../common');
if (!common.hasCrypto)
  common.skip('missing crypto');
const assert = require('assert');
const h2 = require('http2');
const Countdown = require('../common/countdown');

// Only allow one stream to be open at a time
const server = h2.createServer({ settings: { maxConcurrentStreams: 1 } });

// The stream handler must be called only once
server.on('stream', common.mustCall((stream) => {
  stream.respond();
  stream.end('hello world');
}));

server.listen(0, common.mustCall(() => {
  const client = h2.connect(`http://localhost:${server.address().port}`);

  const countdown = new Countdown(2, () => {
    server.close();
    client.close();
  });

  client.on('remoteSettings', common.mustCall((settings) => {
    assert.strictEqual(settings.maxConcurrentStreams, 1);
  }));

  // This one should go through with no problems
  {
    const req = client.request({ ':method': 'POST' });
    req.on('aborted', common.mustNotCall());
    req.on('response', common.mustCall());
    req.resume();
    req.on('end', common.mustCall());
    req.on('close', common.mustCall(() => countdown.dec()));
    req.end();
  }

  {
    // This one should be aborted
    const req = client.request({ ':method': 'POST' });
    req.on('aborted', common.mustCall());
    req.on('response', common.mustNotCall());
    req.resume();
    req.on('end', common.mustCall());
    req.on('close', common.mustCall(() => countdown.dec()));
    req.on('error', common.expectsError({
      code: 'ERR_HTTP2_STREAM_ERROR',
      type: Error,
      message: 'Stream closed with error code NGHTTP2_REFUSED_STREAM'
    }));
  }
}));