CS sendToGC Not Getting Reply

[forum_win]

import {
    CDataGCCStrike15_v2_MatchInfo,
    CMsgGCCStrike15_v2_MatchList,
    CMsgGCCStrike15_v2_MatchListRequestFullGameInfo,
    CMsgGCCStrike15_v2_MatchListRequestRecentUserGames,
} from "csgo-protobuf";
import SteamUser from "steam-user";


const payload = new CMsgGCCStrike15_v2_MatchListRequestFullGameInfo({
    matchid: 3679454899302563903n,
    outcomeid: 3679460199292207251n,
    token: 16014,
});

const user = new SteamUser();
user.logOn({ accountName: "forum_win", password: "" });
user.on("debug", msg => {
    console.log("DEBUG", msg);
});
user.on("error", msg => {
    console.log("error", msg);
});
user.on("disconnected", (e, m) => console.log("DISCONNECTED", e, m));
user.on("loggedOn", () => {
    //https://github.com/SteamDatabase/Protobufs/blob/master/csgo/cstrike15_gcmessages.proto#L41
    //https://steamdb.info/app/730/info/
    user.sendToGC(730, 9147, {}, Buffer.from(payload.toBinary()));
});
user.on("receivedFromGC", (appid, msgType, payload) => {
    console.log(`Received message ${msgType} from GC ${appid} with ${payload.length} bytes`);
});

user.on("appQuit", () => {
    console.log(`quit!!!`);
});

Following logic found:
https://github.com/akiver/boiler-writter/blob/main/boiler-writter/main.cpp
https://github.com/akiver/boiler-writter/blob/main/boiler-writter/CSGOMatchList.cpp
https://github.com/akiver/boiler-writter/blob/main/boiler-writter/CSGOClient.cpp

Trying to leverage steam-user to call protobuf GC, but never receinving receivedFromGC event. Using the @types as well. Tried stepping through and have had no luck. Wondering if there's just a miss in the implementation.

Tried encoding the protobuf payload using a few different npm libs such as protobufjs and copying proto from: https://github.com/SteamDatabase/Protobufs/blob/master/csgo/cstrike15_gcmessages.proto#L41

Any direction would be greatly appreciated. Thanks!pre widget

Edited May 6 by forum_win
Redact old pw

[Dr. McKay]

You need to report that you're in CS2 by calling user.gamesPlayed(730), then complete the GC handshaking process before sending any other GC messages. For CS, this is sending ClientHello (4006) with the proper version number and waiting for ClientWelcome (4004) in response.

You can check node-globaloffensive for reference.