转自：C/C++编程：WebSocketpp（Linux + Clion + boostAsio）_websocket++-CSDN博客

 目前自己使用的：

#include <functional>
#include <mutex>
#include <set>
#include <thread>#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;class count_server{
public:count_server() : m_count(0){m_server.init_asio();m_server.set_open_handler(bind(&count_server::on_open,this,_1));m_server.set_close_handler(bind(&count_server::on_close,this,_1));}void on_open(connection_hdl hdl) {std::lock_guard<std::mutex> lock(m_mutex);m_connections.insert(hdl);}void on_close(connection_hdl hdl) {std::lock_guard<std::mutex> lock(m_mutex);m_connections.erase(hdl);}void count(){while (1){sleep(1);m_count++;std::stringstream  ss;ss << m_count;std::lock_guard<std::mutex> lock(m_mutex);for (auto it : m_connections) {m_server.send(it,ss.str(),websocketpp::frame::opcode::text);}}}void run(uint16_t port) {m_server.listen(port);m_server.start_accept();m_server.run();}
private:typedef std::set<connection_hdl,std::owner_less<connection_hdl>> con_list;int m_count;server m_server;con_list  m_connections;std::mutex  m_mutex;
};int main(){count_server server;std::thread t(std::bind(&count_server::count,&server));server.run(9002);
}