'use strict';

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

if (!common.hasCrypto)

common.skip('missing crypto');

// This test ensures that the built-in HTTP/2 diagnostics channels are reporting

// the diagnostics messages for the 'http2.server.stream.start' channel only

// after the 'http2.server.stream.created' channel.

const Countdown = require('../common/countdown');

const assert = require('assert');

const dc = require('diagnostics_channel');

const http2 = require('http2');

const serverHttp2StreamCreationCount = 2;

const map = {};

dc.subscribe('http2.server.stream.created', common.mustCall(({ stream, headers }) => {

map[stream.id] = { ...map[stream.id], 'createdTime': process.hrtime.bigint() };

}, serverHttp2StreamCreationCount));

dc.subscribe('http2.server.stream.start', common.mustCall(({ stream, headers }) => {

map[stream.id] = { ...map[stream.id], 'startTime': process.hrtime.bigint() };

}, serverHttp2StreamCreationCount));

const server = http2.createServer();

server.on('stream', common.mustCall((stream) => {

stream.respond();

stream.end();

stream.pushStream({}, common.mustSucceed((pushStream) => {

pushStream.respond();

pushStream.end();

}));

}));

server.listen(0, common.mustCall(() => {

const port = server.address().port;

const client = http2.connect(`http://localhost:${port}`);

const countdown = new Countdown(serverHttp2StreamCreationCount, () => {

client.close();

server.close();

const timings = Object.values(map);

assert.strictEqual(timings.length, serverHttp2StreamCreationCount);

for (const { createdTime, startTime } of timings) {

assert.ok(createdTime < startTime);

}

});

const stream = client.request({});

stream.on('response', common.mustCall(() => {

countdown.dec();

}));

client.on('stream', common.mustCall((pushStream) => {

pushStream.on('push', common.mustCall(() => {

countdown.dec();

}));

}));

}));