Exceptions on createDefaultClient and rtClient->tick()

[rumichi2210]

Nakama Server version 3.22.0+4a4c53d7

nakama cpp version: [v2.8.5]

When I run nakama-cpp/example/main.cpp in a windows environment

different parts crash in both releasebuild and debugbuild.

In releasebuild

auto client = Nakama::createDefaultClient(params);

an exception is raised at runtime, and

In debug build

rtClient->tick() crashes on the third call.

Similar issues encountered in the past

C++ SDK crashes on createDefaultClient - Heroic Labs

I tried v2.7.0 and the situation did not change.

Log in debug build: --------------------------------------------------------

[Nakama::RestClient::RestClient] Created: NakamaSdkVersion: 2.8.5 git:27322aa
[Nakama::RestClient::authenticateDevice] ...
'nakama-cpp-sample.exe' (Win32): 'C:\WindowsSystem32\mswsock.dll' loaded. Symbol loading is disabled in the Include/Exclude setting.
[tick] invoking curl callback
[NRtClient::NRtClient] Created
[NRtClient::connect] ...
[tick] curl_multi_remove_handle() failed, code 2.

[tick] Wslay state: Connecting
[tick] Wslay state: Connecting
'nakama-cpp-sample.exe' (Win32): 'C:\WindowsSystem32\cryptbase.dll' was loaded. Symbol loading is disabled in the Include/Exclude setting.
'nakama-cpp-sample.exe' (Win32): 'C:\Windows\System32\bcryptprimitives.dll' was loaded. Symbol loading is disabled in the Include/Exclude setting.
[tick] Wslay state: Handshake sending
[tick] Wslay state: Handshake receiving
[tick] Wslay state: Handshake receiving
Exception thrown in 0x00007FF8972BB7C4 (in nakama-sdk.dll): 0xC0000005: An access violation occurred while reading location 0xFFFFFFFFFFFFFFFFFFFFFF.

Server side log: -----------------------------------------------------------------------------

`nakama | {"level": "debug", "ts": "2024-07-11T09:55:50.211Z", "caller": "server/session_ws.go:205", "msg": "Error reading message from client` `", "uid": "b33d655e-1087-4868-bf66-609d99098cd1", "sid": "bbc3b5bd-3f6b-11ef-b440-7106fdcb5b46", "error": "websocket: close 1006 (abnormal` `closure): unexpected EOF"}`
`nakama | {"level": "info", "ts": "2024-07-11T09:55:50.211Z", "caller": "server/session_ws.go:442", "msg": "Cleaning up closed client connection` `", "uid": "b33d655e-1087-4868-bf66-609d99098cd1", "sid": "bbc3b5bd-3f6b-11ef-b440-7106fdcb5b46"}`
`nakama | {"level": "info", "ts": "2024-07-11T09:55:50.211Z", "caller": "server/session_ws.` `go:450", "msg": "Cleaned up closed connection matchmaker", "uid": "b33d655e-1087-4868-bf66-609d99098cd1", "sid": "bbc3b5bd-3f6b-11ef-b440-7106fdcb5b46"}`
`nakama | {"level": "info", "ts": "2024-07-11T09:55:50.211Z", "caller": "server/session_ws.` `go:454", "msg": "Cleaned up closed connection tracker", "uid": "b33d655e-1087-4868-bf66-609d99098cd1", "sid": "bbc3b5bd-3f6b-11ef-b440-7106fdcb5b46"}`
`nakama | {"level": "info", "ts": "2024-07-11T09:55:50.211Z", "caller": "server/session_ws.` `go:458", "msg": "Cleaned up closed connection status registry", "uid": "b33d655e-1087-4868-bf66-609d99098cd1", "sid": "bbc3b5bd-3f6b-11ef-b440-7106fdcb5b46"}`
`nakama | {"level": "info", "ts": "2024-07-11T09:55:50.211Z", "caller": "server/session_ws.` `go:462", "msg": "Cleaned up closed connection session registry", "uid": "b33d655e-1087-4868-bf66-609d99098cd1", "sid": "bbc3b5bd-3f6b-11ef-b440-7106fdcb5b46"}`
`nakama | {"level": "debug", "ts": "2024-07-11T09:55:50.211Z", "caller": "server/tracker.go:912", "msg": "Processing presence event", "joins":0, "leaves":1}`
`nakama | {"level": "info", "ts": "2024-07-11T09:55:50.212Z", "caller": "server/session_ws.go:520", "msg": "Closed client connection", "uid": "b33d655e-1087-4868-bf66-609d99098cd1", "sid": "bbc3b5bd-3f6b-11ef-b440-7106fdcb5b46"}`
`nakama | {"level": "info", "ts": "2024-07-11T09:55:50.699Z", "caller": "server/session_ws.` `go:81", "msg": "New WebSocket session connected", "uid": "b33d655e-1087-4868-bf66-609d99098cd1", "sid": "c13047b3-3f6b-11ef-b440-7106fdcb5b46", "format":0}`
`nakama | {"level": "debug", "ts": "2024-07-11T09:55:50.699Z", "caller": "server/tracker.go:912", "msg": "Processing presence event", "joins":1, "leaves":0}`

[linear]

SDK-830 C++ SDK exceptions on createDefaultClient and rtClient->tick()

[redbaron]

Could you provide a minimal reproducer of the problem for us to look at? Is it unmodified example/main.cpp from this repo?

[rumichi2210]

I only changed the ipAddress in example/main.cpp.

#include <nakama-cpp/Nakama.h>
#include "nakama-cpp/realtime/NRtDefaultClientListener.h"
#include <iostream>
#include <chrono>
#include <thread>
#include <optional>

int mainHelper();

int main() {
    return mainHelper();
}

int mainHelper() {
    Nakama::NLogger::initWithConsoleSink(Nakama::NLogLevel::Debug);
    Nakama::NClientParameters params;
    params.serverKey = "defaultkey";
    params.host = "192.168.200.100";
    params.port = Nakama::DEFAULT_PORT;
    auto client = Nakama::createDefaultClient(params);
    Nakama::NRtClientPtr rtClient = nullptr;
    bool done = false;
    auto loginFailedCallback = [&done](const Nakama::NError &error) {
        NLOG_INFO("Failed to login");
        NLOG_INFO(error.message);
        done = true;
    };

    auto connectSucceededCallback = [&done]() {
        NLOG_INFO("Done connecting socket");
        done = true;
    };

    auto rtErrorCallback = [&done](const Nakama::NRtError& error) {
        NLOG_INFO("Error from socket:...");
        NLOG_INFO(error.message);
        done = true;
    };

    auto loginSucceededCallback = [&done, &connectSucceededCallback, &rtErrorCallback, &client, &rtClient](Nakama::NSessionPtr session) {
        NLOG_INFO("Login successful");
        NLOG_INFO(session->getAuthToken()); // raw JWT token
        Nakama::NRtDefaultClientListener listener;
        listener.setConnectCallback(connectSucceededCallback);
        listener.setErrorCallback(rtErrorCallback);
        rtClient = client->createRtClient();
        rtClient->setListener(&listener);
        NLOG_INFO("Connecting socket");
        rtClient->connect(session, true, Nakama::NRtClientProtocol::Json);
    };

    std::string deviceId = "e872f976-34c1-4c41-88fe-fd6aef118782";
    NLOG_INFO("Authenticating...");

    client->authenticateDevice(
            deviceId,
            Nakama::opt::nullopt,
            Nakama::opt::nullopt,
            {},
            loginSucceededCallback,
            loginFailedCallback);

    while (!done) {
        client->tick();

        if (rtClient)
        {
            rtClient->tick();
        }

        std::this_thread::sleep_for(std::chrono::milliseconds(50));
    }

    NLOG_INFO("Press any key to continue");
    getchar();
    client->disconnect();
    return 0;
}

[benessbbyy]

I am experiencing the same issue.