What am I doing wrong?

[zenmanenergy]

Can someone point me in the right direction? I'm getting errors with the _ws.onEvent line in the constructor.

`

include

include

class GameServer { public: GameServer();

private: AsyncWebServer _server(...); AsyncWebSocket _ws(...); AwsEventHandler onWsServerEvent(AsyncWebSocket server, AsyncWebSocketClient _client, AwsEventType type, void arg, uint8_t data, size_t len); };

GameServer::GameServer(){ AsyncWebServer _server(80); AsyncWebSocket _ws("/ws"); _ws.onEvent(onWsServerEvent); }

AwsEventHandler GameServer::onWsServerEvent(AsyncWebSocket server, AsyncWebSocketClient _client, AwsEventType type, void arg, uint8_t data, size_t len){

} `

[fartknox]

Were you able to solve this? I'm having the same problem trying to pass an event handler from inside a different class.

[zenmanenergy]

Nope. I just gave up on it.

[fartknox]

This is the closest I got. Still fails

_ws.onEvent(&AsyncFSWebServer::onWsEvent);

no known conversion for argument 1 from

'void (AsyncFSWebServer::)(AsyncWebSocket, AsyncWebSocketClient, AwsEventType, void, uint8_t, size_t) {aka void (AsyncFSWebServer::)(AsyncWebSocket, AsyncWebSocketClient, AwsEventType, void, unsigned char, unsigned int)}'

to 'AwsEventHandler {aka std::function<void(AsyncWebSocket, AsyncWebSocketClient, AwsEventType, void, unsigned char, unsigned int)>}'

[hreintke]

@zenmanenergy @PrintedProto You should use std::bind(..) when you want to pass a class function. std::bind(&AsyncFSWebServer::onWsEvent,this, ....placeholders...);

[fartknox]

@hreintke

Thank you! Your response kinda whooshed over my head, then I looked up info on std::bind and how it works.

http://en.cppreference.com/w/cpp/utility/functional/bind

This line compiled for me. It looks cumbersome though. Is there a way to write it better?

_ws.onEvent(std::bind(&AsyncFSWebServer::onWsEvent,this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3, std::placeholders::_4, std::placeholders::_5, std::placeholders::_6));

[hreintke]

@PrintedProto Agree, it's not the most nice piece of code but that is the way it is.

Not used it myself but I think this should work too.

using namespace std::placeholders; _ws.onEvent(std::bind(&AsyncFSWebServer::onWsEvent,this, _1, _2, _3, _4, _5, _6));