doc/html/boost_asio/example/cpp03/http/server/server.cpp – 1.80.0
doc/html/boost_asio/example/cpp03/http/server/server.cpp
// // server.cpp // ~~~~~~~~~~ // // Copyright (c) 2003-2022 Christopher M. Kohlhoff (chris at kohlhoff dot com) // // Distributed under the Boost Software License, Version 1.0. (See accompanying // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) // #include "server.hpp" #include <boost/bind/bind.hpp> #includenamespace http { namespace server { server::server(const std::string& address, const std::string& port, const std::string& doc_root) : io_context_(), signals_(io_context_), acceptor_(io_context_), connection_manager_(), new_connection_(), request_handler_(doc_root) { // Register to handle the signals that indicate when the server should exit. // It is safe to register for the same signal multiple times in a program, // provided all registration for the specified signal is made through Asio. signals_.add(SIGINT); signals_.add(SIGTERM); #if defined(SIGQUIT) signals_.add(SIGQUIT); #endif // defined(SIGQUIT) signals_.async_wait(boost::bind(&server::handle_stop, this)); // Open the acceptor with the option to reuse the address (i.e. SO_REUSEADDR). boost::asio::ip::tcp::resolver resolver(io_context_); boost::asio::ip::tcp::endpoint endpoint = *resolver.resolve(address, port).begin(); acceptor_.open(endpoint.protocol()); acceptor_.set_option(boost::asio::ip::tcp::acceptor::reuse_address(true)); acceptor_.bind(endpoint); acceptor_.listen(); start_accept(); } void server::run() { // The io_context::run() call will block until all asynchronous operations // have finished. While the server is running, there is always at least one // asynchronous operation outstanding: the asynchronous accept call waiting // for new incoming connections. io_context_.run(); } void server::start_accept() { new_connection_.reset(new connection(io_context_, connection_manager_, request_handler_)); acceptor_.async_accept(new_connection_->socket(), boost::bind(&server::handle_accept, this, boost::asio::placeholders::error)); } void server::handle_accept(const boost::system::error_code& e) { // Check whether the server was stopped by a signal before this completion // handler had a chance to run. if (!acceptor_.is_open()) { return; } if (!e) { connection_manager_.start(new_connection_); } start_accept(); } void server::handle_stop() { // The server is stopped by cancelling all outstanding asynchronous // operations. Once all operations have finished the io_context::run() call // will exit. acceptor_.close(); connection_manager_.stop_all(); } } // namespace server } // namespace http
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