| src/examples/cpp03/http/server/server.cpp | src/examples/cpp11/http/server/server.cpp |
|---|
| ⋮ | ⋮ |
| 1 | // | 1 | // |
| 2 | //·server.cpp | 2 | //·server.cpp |
| 3 | //·~~~~~~~~~~ | 3 | //·~~~~~~~~~~ |
| 4 | // | 4 | // |
| 5 | //·Copyright·(c)·2003-2020·Christopher·M.·Kohlhoff·(chris·at·kohlhoff·dot·com) | 5 | //·Copyright·(c)·2003-2020·Christopher·M.·Kohlhoff·(chris·at·kohlhoff·dot·com) |
| 6 | // | 6 | // |
| 7 | //·Distributed·under·the·Boost·Software·License,·Version·1.0.·(See·accompanying | 7 | //·Distributed·under·the·Boost·Software·License,·Version·1.0.·(See·accompanying |
| 8 | //·file·LICENSE_1_0.txt·or·copy·at·http://www.boost.org/LICENSE_1_0.txt) | 8 | //·file·LICENSE_1_0.txt·or·copy·at·http://www.boost.org/LICENSE_1_0.txt) |
| 9 | // | 9 | // |
| 10 | | 10 | |
| 11 | #include·"server.hpp" | 11 | #include·"server.hpp" |
| 12 | #include·<boost/bind/bind.hpp> | |
| 13 | #include·<signal.h> | 12 | #include·<signal.h> |
| | 13 | #include·<utility> |
| 14 | | 14 | |
| 15 | namespace·http·{ | 15 | namespace·http·{ |
| 16 | namespace·server·{ | 16 | namespace·server·{ |
| 17 | | 17 | |
| 18 | server::server(const·std::string&·address,·const·std::string&·port, | 18 | server::server(const·std::string&·address,·const·std::string&·port, |
| 19 | ····const·std::string&·doc_root) | 19 | ····const·std::string&·doc_root) |
| 20 | ··:·io_context_(), | 20 | ··:·io_context_(1), |
| 21 | ····signals_(io_context_), | 21 | ····signals_(io_context_), |
| 22 | ····acceptor_(io_context_), | 22 | ····acceptor_(io_context_), |
| 23 | ····connection_manager_(), | 23 | ····connection_manager_(), |
| 24 | ····new_connection_(), | |
| 25 | ····request_handler_(doc_root) | 24 | ····request_handler_(doc_root) |
| 26 | { | 25 | { |
| 27 | ··//·Register·to·handle·the·signals·that·indicate·when·the·server·should·exit. | 26 | ··//·Register·to·handle·the·signals·that·indicate·when·the·server·should·exit. |
| 28 | ··//·It·is·safe·to·register·for·the·same·signal·multiple·times·in·a·program, | 27 | ··//·It·is·safe·to·register·for·the·same·signal·multiple·times·in·a·program, |
| 29 | ··//·provided·all·registration·for·the·specified·signal·is·made·through·Asio. | 28 | ··//·provided·all·registration·for·the·specified·signal·is·made·through·Asio. |
| 30 | ··signals_.add(SIGINT); | 29 | ··signals_.add(SIGINT); |
| 31 | ··signals_.add(SIGTERM); | 30 | ··signals_.add(SIGTERM); |
| 32 | #if·defined(SIGQUIT) | 31 | #if·defined(SIGQUIT) |
| 33 | ··signals_.add(SIGQUIT); | 32 | ··signals_.add(SIGQUIT); |
| 34 | #endif·//·defined(SIGQUIT) | 33 | #endif·//·defined(SIGQUIT) |
| 35 | ··signals_.async_wait(boost::bind(&server::handle_stop,·this)); | 34 | |
| | 35 | ··do_await_stop(); |
| 36 | | 36 | |
| 37 | ··//·Open·the·acceptor·with·the·option·to·reuse·the·address·(i.e.·SO_REUSEADDR). | 37 | ··//·Open·the·acceptor·with·the·option·to·reuse·the·address·(i.e.·SO_REUSEADDR). |
| 38 | ··asio::ip::tcp::resolver·resolver(io_context_); | 38 | ··asio::ip::tcp::resolver·resolver(io_context_); |
| 39 | ··asio::ip::tcp::endpoint·endpoint·= | 39 | ··asio::ip::tcp::endpoint·endpoint·= |
| 40 | ····*resolver.resolve(address,·port).begin(); | 40 | ····*resolver.resolve(address,·port).begin(); |
| 41 | ··acceptor_.open(endpoint.protocol()); | 41 | ··acceptor_.open(endpoint.protocol()); |
| 42 | ··acceptor_.set_option(asio::ip::tcp::acceptor::reuse_address(true)); | 42 | ··acceptor_.set_option(asio::ip::tcp::acceptor::reuse_address(true)); |
| 43 | ··acceptor_.bind(endpoint); | 43 | ··acceptor_.bind(endpoint); |
| 44 | ··acceptor_.listen(); | 44 | ··acceptor_.listen(); |
| 45 | | 45 | |
| 46 | ··start_accept(); | 46 | ··do_accept(); |
| 47 | } | 47 | } |
| 48 | | 48 | |
| 49 | void·server::run() | 49 | void·server::run() |
| 50 | { | 50 | { |
| 51 | ··//·The·io_context::run()·call·will·block·until·all·asynchronous·operations | 51 | ··//·The·io_context::run()·call·will·block·until·all·asynchronous·operations |
| 52 | ··//·have·finished.·While·the·server·is·running,·there·is·always·at·least·one | 52 | ··//·have·finished.·While·the·server·is·running,·there·is·always·at·least·one |
| 53 | ··//·asynchronous·operation·outstanding:·the·asynchronous·accept·call·waiting | 53 | ··//·asynchronous·operation·outstanding:·the·asynchronous·accept·call·waiting |
| 54 | ··//·for·new·incoming·connections. | 54 | ··//·for·new·incoming·connections. |
| 55 | ··io_context_.run(); | 55 | ··io_context_.run(); |
| 56 | } | 56 | } |
| 57 | | 57 | |
| 58 | void·server::start_accept() | 58 | void·server::do_accept() |
| 59 | { | |
| 60 | ··new_connection_.reset(new·connection(io_context_, | |
| 61 | ········connection_manager_,·request_handler_)); | |
| 62 | ··acceptor_.async_accept(new_connection_->socket(), | |
| 63 | ······boost::bind(&server::handle_accept,·this, | |
| 64 | ········asio::placeholders::error)); | |
| 65 | } | |
| 66 | | |
| 67 | void·server::handle_accept(const·asio::error_code&·e) | |
| 68 | { | 59 | { |
| 69 | ··//·Check·whether·the·server·was·stopped·by·a·signal·before·this·completion | 60 | ··acceptor_.async_accept( |
| 70 | ··//·handler·had·a·chance·to·run. | 61 | ······[this](std::error_code·ec,·asio::ip::tcp::socket·socket) |
| 71 | ··if·(!acceptor_.is_open()) | 62 | ······{ |
| 72 | ··{ | 63 | ········//·Check·whether·the·server·was·stopped·by·a·signal·before·this |
| 73 | ····return; | 64 | ········//·completion·handler·had·a·chance·to·run. |
| 74 | ··} | 65 | ········if·(!acceptor_.is_open()) |
| 75 | | 66 | ········{ |
| 76 | ··if·(!e) | 67 | ··········return; |
| 77 | ··{ | 68 | ········} |
| 78 | ····connection_manager_.start(new_connection_); | 69 | |
| 79 | ··} | 70 | ········if·(!ec) |
| | 71 | ········{ |
| | 72 | ··········connection_manager_.start(std::make_shared<connection>( |
| | 73 | ··············std::move(socket),·connection_manager_,·request_handler_)); |
| | 74 | ········} |
| 80 | | 75 | |
| 81 | ··start_accept(); | 76 | ········do_accept(); |
| | 77 | ······}); |
| 82 | } | 78 | } |
| 83 | | 79 | |
| 84 | void·server::handle_stop() | 80 | void·server::do_await_stop() |
| 85 | { | 81 | { |
| 86 | ··//·The·server·is·stopped·by·cancelling·all·outstanding·asynchronous | 82 | ··signals_.async_wait( |
| 87 | ··//·operations.·Once·all·operations·have·finished·the·io_context::run()·call | 83 | ······[this](std::error_code·/*ec*/,·int·/*signo*/) |
| 88 | ··//·will·exit. | 84 | ······{ |
| 89 | ··acceptor_.close(); | 85 | ········//·The·server·is·stopped·by·cancelling·all·outstanding·asynchronous |
| 90 | ··connection_manager_.stop_all(); | 86 | ········//·operations.·Once·all·operations·have·finished·the·io_context::run() |
| | 87 | ········//·call·will·exit. |
| | 88 | ········acceptor_.close(); |
| | 89 | ········connection_manager_.stop_all(); |
| | 90 | ······}); |
| 91 | } | 91 | } |
| 92 | | 92 | |
| 93 | }·//·namespace·server | 93 | }·//·namespace·server |
| 94 | }·//·namespace·http | 94 | }·//·namespace·http |