handler_switch.cpp
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#include <iostream>
#include <websocketpp/config/asio_no_tls.hpp>
#include <websocketpp/server.hpp>
typedef websocketpp::server<websocketpp::config::asio> server;
using websocketpp::connection_hdl;
using websocketpp::lib::placeholders::_1;
using websocketpp::lib::placeholders::_2;
using websocketpp::lib::bind;
using websocketpp::lib::ref;
void custom_on_msg(server & s, connection_hdl hdl, server::message_ptr msg) {
std::cout << "Message sent to custom handler" << std::endl;
}
void default_on_msg(server & s, connection_hdl hdl, server::message_ptr msg) {
std::cout << "Message sent to default handler" << std::endl;
if (msg->get_payload() == "upgrade") {
// Upgrade our connection_hdl to a full connection_ptr
server::connection_ptr con = s.get_con_from_hdl(hdl);
// Change the on message handler for this connection only to
// custom_on_mesage
con->set_message_handler(bind(&custom_on_msg,ref(s),::_1,::_2));
std::cout << "Upgrading connection to custom handler" << std::endl;
}
}
int main() {
server s;
s.set_message_handler(bind(&default_on_msg,ref(s),::_1,::_2));
s.init_asio();
s.listen(9002);
s.start_accept();
s.run();
}