| src/examples/cpp03/echo/async_tcp_echo_server.cpp | src/examples/cpp11/echo/async_tcp_echo_server.cpp |
| ⋮ | ⋮ |
| 1 | // | 1 | // |
| 2 | //·async_tcp_echo_server.cpp | 2 | //·async_tcp_echo_server.cpp |
| 3 | //·~~~~~~~~~~~~~~~~~~~~~~~~~ | 3 | //·~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 4 | // | 4 | // |
| 5 | //·Copyright·(c)·2003-2015·Christopher·M.·Kohlhoff·(chris·at·kohlhoff·dot·com) | 5 | //·Copyright·(c)·2003-2015·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·<cstdlib> | 11 | #include·<cstdlib> |
| 12 | #include·<iostream> | 12 | #include·<iostream> |
| 13 | #include·<boost/bind.hpp> | 13 | #include·<memory> |
| | 14 | #include·<utility> |
| 14 | #include·"asio.hpp" | 15 | #include·"asio.hpp" |
| 15 | | 16 | |
| 16 | using·asio::ip::tcp; | 17 | using·asio::ip::tcp; |
| 17 | | 18 | |
| 18 | class·session | 19 | class·session |
| | 20 | ··:·public·std::enable_shared_from_this<session> |
| 19 | { | 21 | { |
| 20 | public: | 22 | public: |
| 21 | ··session(asio::io_service&·io_service) | 23 | ··session(tcp::socket·socket) |
| 22 | ····:·socket_(io_service) | 24 | ····:·socket_(std::move(socket)) |
| 23 | ··{ | 25 | ··{ |
| 24 | ··} | 26 | ··} |
| 25 | | 27 | |
| 26 | ··tcp::socket&·socket() | |
| 27 | ··{ | |
| 28 | ····return·socket_; | |
| 29 | ··} | |
| 30 | | |
| 31 | ··void·start() | 28 | ··void·start() |
| 32 | ··{ | 29 | ··{ |
| 33 | ····socket_.async_read_some(asio::buffer(data_,·max_length), | 30 | ····do_read(); |
| 34 | ········boost::bind(&session::handle_read,·this, | |
| 35 | ··········asio::placeholders::error, | |
| 36 | ··········asio::placeholders::bytes_transferred)); | |
| 37 | ··} | 31 | ··} |
| 38 | | 32 | |
| 39 | private: | 33 | private: |
| 40 | ··void·handle_read(const·asio::error_code&·error, | 34 | ··void·do_read() |
| 41 | ······size_t·bytes_transferred) | |
| 42 | ··{ | |
| 43 | ····if·(!error) | |
| 44 | ····{ | |
| 45 | ······asio::async_write(socket_, | |
| 46 | ··········asio::buffer(data_,·bytes_transferred), | |
| 47 | ··········boost::bind(&session::handle_write,·this, | |
| 48 | ············asio::placeholders::error)); | |
| 49 | ····} | |
| 50 | ····else | |
| 51 | ····{ | |
| 52 | ······delete·this; | |
| 53 | ····} | |
| 54 | ··} | |
| 55 | | |
| 56 | ··void·handle_write(const·asio::error_code&·error) | |
| 57 | ··{ | 35 | ··{ |
| 58 | ····if·(!error) | 36 | ····auto·self(shared_from_this()); |
| 59 | ····{ | 37 | ····socket_.async_read_some(asio::buffer(data_,·max_length), |
| 60 | ······socket_.async_read_some(asio::buffer(data_,·max_length), | 38 | ········[this,·self](std::error_code·ec,·std::size_t·length) |
| 61 | ··········boost::bind(&session::handle_read,·this, | 39 | ········{ |
| 62 | ············asio::placeholders::error, | 40 | ··········if·(!ec) |
| 63 | ············asio::placeholders::bytes_transferred)); | 41 | ··········{ |
| 64 | ····} | 42 | ············do_write(length); |
| 65 | ····else | 43 | ··········} |
| 66 | ····{ | 44 | ········}); |
| 67 | ······delete·this; | 45 | ··} |
| 68 | ····} | 46 | |
| | 47 | ··void·do_write(std::size_t·length) |
| | 48 | ··{ |
| | 49 | ····auto·self(shared_from_this()); |
| | 50 | ····asio::async_write(socket_,·asio::buffer(data_,·length), |
| | 51 | ········[this,·self](std::error_code·ec,·std::size_t·/*length*/) |
| | 52 | ········{ |
| | 53 | ··········if·(!ec) |
| | 54 | ··········{ |
| | 55 | ············do_read(); |
| | 56 | ··········} |
| | 57 | ········}); |
| 69 | ··} | 58 | ··} |
| 70 | | 59 | |
| 71 | ··tcp::socket·socket_; | 60 | ··tcp::socket·socket_; |
| 72 | ··enum·{·max_length·=·1024·}; | 61 | ··enum·{·max_length·=·1024·}; |
| 73 | ··char·data_[max_length]; | 62 | ··char·data_[max_length]; |
| 74 | }; | 63 | }; |
| 75 | | 64 | |
| 76 | class·server | 65 | class·server |
| 77 | { | 66 | { |
| 78 | public: | 67 | public: |
| 79 | ··server(asio::io_service&·io_service,·short·port) | 68 | ··server(asio::io_service&·io_service,·short·port) |
| 80 | ····:·io_service_(io_service), | 69 | ····:·acceptor_(io_service,·tcp::endpoint(tcp::v4(),·port)), |
| 81 | ······acceptor_(io_service,·tcp::endpoint(tcp::v4(),·port)) | 70 | ······socket_(io_service) |
| 82 | ··{ | 71 | ··{ |
| 83 | ····start_accept(); | 72 | ····do_accept(); |
| 84 | ··} | 73 | ··} |
| 85 | | 74 | |
| 86 | private: | 75 | private: |
| 87 | ··void·start_accept() | 76 | ··void·do_accept() |
| 88 | ··{ | |
| 89 | ····session*·new_session·=·new·session(io_service_); | |
| 90 | ····acceptor_.async_accept(new_session->socket(), | |
| 91 | ········boost::bind(&server::handle_accept,·this,·new_session, | |
| 92 | ··········asio::placeholders::error)); | |
| 93 | ··} | |
| 94 | | |
| 95 | ··void·handle_accept(session*·new_session, | |
| 96 | ······const·asio::error_code&·error) | |
| 97 | ··{ | 77 | ··{ |
| 98 | ····if·(!error) | 78 | ····acceptor_.async_accept(socket_, |
| 99 | ····{ | 79 | ········[this](std::error_code·ec) |
| 100 | ······new_session->start(); | 80 | ········{ |
| 101 | ····} | 81 | ··········if·(!ec) |
| 102 | ····else | 82 | ··········{ |
| 103 | ····{ | 83 | ············std::make_shared<session>(std::move(socket_))->start(); |
| 104 | ······delete·new_session; | 84 | ··········} |
| 105 | ····} | |
| 106 | | 85 | |
| 107 | ····start_accept(); | 86 | ··········do_accept(); |
| | 87 | ········}); |
| 108 | ··} | 88 | ··} |
| 109 | | 89 | |
| 110 | ··asio::io_service&·io_service_; | |
| 111 | ··tcp::acceptor·acceptor_; | 90 | ··tcp::acceptor·acceptor_; |
| | 91 | ··tcp::socket·socket_; |
| 112 | }; | 92 | }; |
| 113 | | 93 | |
| 114 | int·main(int·argc,·char*·argv[]) | 94 | int·main(int·argc,·char*·argv[]) |
| 115 | { | 95 | { |
| 116 | ··try | 96 | ··try |
| 117 | ··{ | 97 | ··{ |
| 118 | ····if·(argc·!=·2) | 98 | ····if·(argc·!=·2) |
| 119 | ····{ | 99 | ····{ |
| 120 | ······std::cerr·<<·"Usage:·async_tcp_echo_server·<port>\n"; | 100 | ······std::cerr·<<·"Usage:·async_tcp_echo_server·<port>\n"; |
| 121 | ······return·1; | 101 | ······return·1; |
| 122 | ····} | 102 | ····} |
| 123 | | 103 | |
| 124 | ····asio::io_service·io_service; | 104 | ····asio::io_service·io_service; |
| 125 | | 105 | |
| 126 | ····using·namespace·std;·//·For·atoi. | 106 | ····server·s(io_service,·std::atoi(argv[1])); |
| 127 | ····server·s(io_service,·atoi(argv[1])); | |
| 128 | | 107 | |
| 129 | ····io_service.run(); | 108 | ····io_service.run(); |
| 130 | ··} | 109 | ··} |
| 131 | ··catch·(std::exception&·e) | 110 | ··catch·(std::exception&·e) |
| 132 | ··{ | 111 | ··{ |
| 133 | ····std::cerr·<<·"Exception:·"·<<·e.what()·<<·"\n"; | 112 | ····std::cerr·<<·"Exception:·"·<<·e.what()·<<·"\n"; |
| 134 | ··} | 113 | ··} |
| 135 | | 114 | |
| 136 | ··return·0; | 115 | ··return·0; |
| 137 | } | 116 | } |