--- /dev/null
+#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();
+}