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'use strict'; const common = require('../common'); if (!common.hasCrypto) common.skip('missing crypto'); const Countdown = require('../common/countdown'); const http2 = require('http2'); const assert = require('assert'); // Test that the maxConcurrentStreams setting is strictly enforced const server = http2.createServer({ settings: { maxConcurrentStreams: 1 } }); let c = 0; server.on('stream', common.mustCall((stream) => { // Because we only allow one open stream at a time, // c should never be greater than 1. assert.strictEqual(++c, 1); stream.respond(); // Force some asynchronous stuff. setImmediate(() => { stream.end('ok'); assert.strictEqual(--c, 0); }); }, 3)); server.listen(0, common.mustCall(() => { const client = http2.connect(`http://localhost:${server.address().port}`); const countdown = new Countdown(3, common.mustCall(() => { server.close(); client.destroy(); })); client.on('remoteSettings', common.mustCall(() => { assert.strictEqual(client.remoteSettings.maxConcurrentStreams, 1); { const req = client.request(); req.resume(); req.on('close', () => { countdown.dec(); setImmediate(() => { const req = client.request(); req.resume(); req.on('close', () => countdown.dec()); }); }); } { const req = client.request(); req.resume(); req.on('close', () => countdown.dec()); } })); }));