// license:Boost // copyright-holders:Christopher M. Kohlhoff #include "server.hpp" #include #include namespace http { namespace server { server::server(const std::string& address, const std::string& port, const std::string& doc_root) : m_io_context(1), m_signals(m_io_context), m_acceptor(m_io_context), m_connection_manager(), m_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. m_signals.add(SIGINT); m_signals.add(SIGTERM); #if defined(SIGQUIT) signals_.add(SIGQUIT); #endif // defined(SIGQUIT) do_await_stop(); // Open the acceptor with the option to reuse the address (i.e. SO_REUSEADDR). asio::ip::tcp::resolver resolver(m_io_context); asio::ip::tcp::endpoint endpoint = *resolver.resolve(address, port).begin(); m_acceptor.open(endpoint.protocol()); m_acceptor.set_option(asio::ip::tcp::acceptor::reuse_address(true)); m_acceptor.bind(endpoint); m_acceptor.listen(); do_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. m_io_context.run(); } void server::do_accept() { m_acceptor.async_accept( [this](std::error_code ec, asio::ip::tcp::socket socket) { // Check whether the server was stopped by a signal before this // completion handler had a chance to run. if (!m_acceptor.is_open()) { return; } if (!ec) { m_connection_manager.start(std::make_shared( std::move(socket), m_connection_manager, m_request_handler)); } do_accept(); }); } void server::do_await_stop() { m_signals.async_wait( [this](std::error_code /*ec*/, int /*signo*/) { // The server is stopped by cancelling all outstanding asynchronous // operations. Once all operations have finished the io_context::run() // call will exit. m_acceptor.close(); m_connection_manager.stop_all(); }); } } // namespace server } // namespace http