RaccoonWSClient

RaccoonWSClient is a lightweight implementation of libwebsockets in C++

this project has only one dependency https://libwebsockets.org/

if you want to use https://conan.io/ the conanfile.txt is avaiable

SSL is enabled by default but you can change this to 0 and it will disable SSL

example to build with CLION + Conan

conan install . -s build_type=Debug --install-folder=cmake-build-debug --build missing
cmake .
make

export SSL_CERT_FILE="~/ca-cert.pem"

or you can add

ctxInfo.ssl_ca_filepath = "/home/cacert.pem";

You can set different parameters as you need, a full list of parameters can be found here https://libwebsockets.org/lws-api-doc-master/html/structlws__context__creation__info.html

    creation_info.port                     = CONTEXT_PORT_NO_LISTEN;
    creation_info.iface                    = NULL;
    creation_info.protocols                = protocols;
    creation_info.ssl_cert_filepath        = NULL;
    creation_info.ssl_private_key_filepath = NULL;
    creation_info.extensions               = NULL;
    creation_info.gid                      = -1;
    creation_info.uid                      = -1;
    creation_info.options                 |= LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT;
    creation_info.fd_limit_per_thread      = 1024;
    creation_info.max_http_header_pool     = 1024;
    creation_info.ws_ping_pong_interval    = 10;
    creation_info.ka_time                  = 10;
    creation_info.ka_probes                = 10;
    creation_info.ka_interval              = 10;

Example of implemention to subscribe bitstamp https://www.bitstamp.net/websocket/v2/

#include "WsRaccoonClient.h"
#include "string"
#include "iostream"

using namespace std;

class App : public WsClientCallback {

private:
    WsRaccoonClient *wsClient;

public:
    void onConnSuccess(std::string *sessionId) override {
        cout << "connection succeeded" << endl;
        std::string ban = "{ \"event\": \"bts:subscribe\", \"data\": { \"channel\": \"diff_order_book_btcusd\" } }";
        wsClient->sendMessage(&ban);
    }

    void onConnClosed() override {
        cout << "Connection closed" << endl;
    }

    void onConnError() override {
        cout << "Connection error" << endl;

    }

    void onReceiveMessage(std::string *message) override {
        cout << message->c_str() << endl;
    };

    App() {
        wsClient = nullptr;
    }

    void start() {
        std::string *address = new std::string("ws.bitstamp.net");
        std::string *path = new std::string("/");
        wsClient = new WsRaccoonClient(address, 443, path, this);
        delete address;
        delete path;

        wsClient->start();

        sleep(10);

        wsClient->stop();
        delete wsClient;
        wsClient = nullptr;
    }
};

int main(int args, char **argv) {
    (new App())->start();
    return 0;
}