HTTP2 - how to send multiple PRIORITY frames and only one HEADERS frame ? #3997
Description
Details
I want to simulate Firefox Http2 frames, like below
The Firefox Http2 frames order are Magic, SETTINGS[0], WINDOW_UPDATE[0], PRIORITY[3], PRIORITY[5], PRIORITY[7], PRIORITY[9], PRIORITY[11], PRIORITY[13], then HEADERS[15]: GET /api/all, WINDOW_UPDATE[15].
I wrote a script with node-http2 but got the result below
As you can see, every stream sends a HEADERS frame. This is unexpected. I want to send the HEADERS frame only once and its parent stream id is 13, just like Firefox.
Maybe there is something wrong with my script, could you help check it? Thank you.
Node.js version
v18.3.0
Example code
const http2 = require('http2');
const
scheme = 'https',
method = 'GET',
host = 'tls.peet.ws',
path = '/api/all',
userAgent = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:105.0) Gecko/20100101 Firefox/105.0',
accept = 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8',
acceptLanguage = 'en-US,en;q=0.5',
acceptEncoding = 'gzip, deflate, br',
connection = 'keep-alive',
cacheControl = 'no-cache',
trailers = 'trailers';
const
reqOptions = {
[http2.constants.HTTP2_HEADER_METHOD]: method,
[http2.constants.HTTP2_HEADER_PATH]: path,
[http2.constants.HTTP2_HEADER_AUTHORITY]: host,
[http2.constants.HTTP2_HEADER_SCHEME]: scheme,
[http2.constants.HTTP2_HEADER_USER_AGENT]: userAgent,
[http2.constants.HTTP2_HEADER_ACCEPT]: accept,
[http2.constants.HTTP2_HEADER_ACCEPT_LANGUAGE]: acceptLanguage,
[http2.constants.HTTP2_HEADER_ACCEPT_ENCODING]: acceptEncoding,
// [ http2.constants.HTTP2_HEADER_CONNECTION ] : connection,
'Upgrade-Insecure-Requests': '1',
'Sec-Fetch-Dest': 'document',
'Sec-Fetch-Mode': 'navigate',
'Sec-Fetch-Site': 'none',
'Sec-Fetch-User': '?1',
'Pragma': 'no-cache',
[http2.constants.HTTP2_HEADER_CACHE_CONTROL]: cacheControl,
[http2.constants.HTTP2_HEADER_TE]: trailers
};
const client = http2.connect(`${scheme}://${host}`, {
settings: {
// enablePush: false,
headerTableSize: 65536,
initialWindowSize: 131072,
maxFrameSize: 16384
},
}, (session) => {
session.setLocalWindowSize(1024 * 12288);
});
function request(offset) {
return new Promise((resolve, reject) => {
const stream = client.request(reqOptions, {
weight: 42,
parent: offset === 0 ? 0 : 1,
exclusive: false,
});
if (offset !== 0) {
stream.priority({
exclusive: false,
weight: 241,
});
}
stream.on('error', () => {
console.log(stream.id);
});
stream.on('response', () => {
console.log(stream.id);
});
stream.setEncoding('utf8');
let data = '';
stream.on('data', (chunk) => {
data += chunk;
});
stream.on('end', () => {
console.log(data);
console.log(stream.id);
});
stream.end();
});
}
const requests = [];
for (let i = 0; i < 7; i++) {
requests.push(request(i));
}
Promise.all(requests).then().finally(() => {
client.close();
});Operating system
Ubuntu 20
Scope
code tests
Module and version
Not applicable.