node/test/parallel/test-http2-multiplex.js

// Flags: --expose-http2
'use strict';

// Tests opening 100 concurrent simultaneous uploading streams over a single
// connection and makes sure that the data for each is appropriately echoed.

const common = require('../common');
const assert = require('assert');
const http2 = require('http2');

const server = http2.createServer();

const count = 100;

server.on('stream', common.mustCall((stream) => {
  stream.respond();
  stream.pipe(stream);
}, count));

server.listen(0, common.mustCall(() => {
  const client = http2.connect(`http://localhost:${server.address().port}`);

  let remaining = count;

  function maybeClose() {
    if (--remaining === 0) {
      server.close();
      client.destroy();
    }
  }

  function doRequest() {
    const req = client.request({ ':method': 'POST ' });

    let data = '';
    req.setEncoding('utf8');
    req.on('data', (chunk) => data += chunk);
    req.on('end', common.mustCall(() => {
      assert.strictEqual(data, 'abcdefghij');
      maybeClose();
    }));

    let n = 0;
    function writeChunk() {
      if (n < 10) {
        req.write(String.fromCharCode(97 + n));
        setTimeout(writeChunk, 10);
      } else {
        req.end();
      }
      n++;
    }

    writeChunk();
  }

  for (let n = 0; n < count; n++)
    doRequest();
}));