packet-parser/index.js
2025-02-06 17:32:31 +03:00

32 lines
2.0 KiB
JavaScript
Raw Permalink Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

function simpleParseHeaders (packet) {
return Object.fromEntries(packet.match(/[a-z\-]{1,}:\s{0,}.{1,}(\n|\r){1,}/gmiu)?.map(i => {
const [key, value] = i.split(/:\s{0,}/miu);
return [
key.trim(),
value.trim()
];
}) ?? []);
}
class PacketParseResult {
constructor (result, isEncrypted = false) {
this.result = result;
this.isEncrypted = isEncrypted;
}
}
module.exports = async (bytes) => {
const packet = bytes.toString("utf8");
const isHTTP = packet.match(/(GET|POST|PUT|DELETE|OPTIONS|HEAD|PATCH|TRACE|CONNECT)\s{1,}\/[a-zA-Z0-9_\-\.\/?=&%:]{0,}\s{1,}HTTP(S|)\/(1\.0|1\.1|2\.0)(\n|\r)/gmu)?.length > 0 ?? false;
let isWebSocket = false;
if (isHTTP) {
const headers = simpleParseHeaders(packet);
if (headers.Upgrade === "websocket")
isWebSocket = true;
}
return new PacketParseResult({
isHTTP, isWebSocket
}, false);
}