| src/examples/cpp03/socks4/sync_client.cpp | src/examples/cpp11/socks4/sync_client.cpp |
|---|
| ⋮ | ⋮ |
| 1 | // | 1 | // |
| 2 | //·sync_client.cpp | 2 | //·sync_client.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·<array> |
| 11 | #include·<iostream> | 12 | #include·<iostream> |
| 12 | #include·<iomanip> | 13 | #include·<iomanip> |
| 13 | #include·<ostream> | 14 | #include·<ostream> |
| 14 | #include·<string> | 15 | #include·<string> |
| 15 | #include·<asio.hpp> | 16 | #include·<asio.hpp> |
| 16 | #include·<boost/array.hpp> | |
| 17 | #include·"socks4.hpp" | 17 | #include·"socks4.hpp" |
| 18 | | 18 | |
| 19 | using·asio::ip::tcp; | 19 | using·asio::ip::tcp; |
| 20 | | 20 | |
| 21 | int·main(int·argc,·char*·argv[]) | 21 | int·main(int·argc,·char*·argv[]) |
| 22 | { | 22 | { |
| 23 | ··try | 23 | ··try |
| 24 | ··{ | 24 | ··{ |
| 25 | ····if·(argc·!=·4) | 25 | ····if·(argc·!=·4) |
| 26 | ····{ | 26 | ····{ |
| 27 | ······std::cout·<<·"Usage:·sync_client·<socks4server>·<socks4port>·<user>\n"; | 27 | ······std::cout·<<·"Usage:·sync_client·<socks4server>·<socks4port>·<user>\n"; |
| 28 | ······std::cout·<<·"Examples:\n"; | 28 | ······std::cout·<<·"Examples:\n"; |
| 29 | ······std::cout·<<·"··sync_client·127.0.0.1·1080·chris\n"; | 29 | ······std::cout·<<·"··sync_client·127.0.0.1·1080·chris\n"; |
| 30 | ······std::cout·<<·"··sync_client·localhost·socks·chris\n"; | 30 | ······std::cout·<<·"··sync_client·localhost·socks·chris\n"; |
| 31 | ······return·1; | 31 | ······return·1; |
| 32 | ····} | 32 | ····} |
| 33 | | 33 | |
| 34 | ····asio::io_context·io_context; | 34 | ····asio::io_context·io_context; |
| 35 | | 35 | |
| 36 | ····//·Get·a·list·of·endpoints·corresponding·to·the·SOCKS·4·server·name. | 36 | ····//·Get·a·list·of·endpoints·corresponding·to·the·SOCKS·4·server·name. |
| 37 | ····tcp::resolver·resolver(io_context); | 37 | ····tcp::resolver·resolver(io_context); |
| 38 | ····tcp::resolver::results_type·endpoints·=·resolver.resolve(argv[1],·argv[2]); | 38 | ····auto·endpoints·=·resolver.resolve(argv[1],·argv[2]); |
| 39 | | 39 | |
| 40 | ····//·Try·each·endpoint·until·we·successfully·establish·a·connection·to·the | 40 | ····//·Try·each·endpoint·until·we·successfully·establish·a·connection·to·the |
| 41 | ····//·SOCKS·4·server. | 41 | ····//·SOCKS·4·server. |
| 42 | ····tcp::socket·socket(io_context); | 42 | ····tcp::socket·socket(io_context); |
| 43 | ····asio::connect(socket,·endpoints); | 43 | ····asio::connect(socket,·endpoints); |
| 44 | | 44 | |
| 45 | ····//·Get·an·endpoint·for·the·Boost·website.·This·will·be·passed·to·the·SOCKS | 45 | ····//·Get·an·endpoint·for·the·Boost·website.·This·will·be·passed·to·the·SOCKS |
| 46 | ····//·4·server.·Explicitly·specify·IPv4·since·SOCKS·4·does·not·support·IPv6. | 46 | ····//·4·server.·Explicitly·specify·IPv4·since·SOCKS·4·does·not·support·IPv6. |
| 47 | ····tcp::endpoint·http_endpoint·= | 47 | ····auto·http_endpoint·=·*resolver.resolve(tcp::v4(),·"www.boost.org",·"http"); |
| 48 | ······*resolver.resolve(tcp::v4(),·"www.boost.org",·"http").begin(); | |
| 49 | | 48 | |
| 50 | ····//·Send·the·request·to·the·SOCKS·4·server. | 49 | ····//·Send·the·request·to·the·SOCKS·4·server. |
| 51 | ····socks4::request·socks_request( | 50 | ····socks4::request·socks_request( |
| 52 | ········socks4::request::connect,·http_endpoint,·argv[3]); | 51 | ········socks4::request::connect,·http_endpoint,·argv[3]); |
| 53 | ····asio::write(socket,·socks_request.buffers()); | 52 | ····asio::write(socket,·socks_request.buffers()); |
| 54 | | 53 | |
| 55 | ····//·Receive·a·response·from·the·SOCKS·4·server. | 54 | ····//·Receive·a·response·from·the·SOCKS·4·server. |
| 56 | ····socks4::reply·socks_reply; | 55 | ····socks4::reply·socks_reply; |
| 57 | ····asio::read(socket,·socks_reply.buffers()); | 56 | ····asio::read(socket,·socks_reply.buffers()); |
| 58 | | 57 | |
| 59 | ····//·Check·whether·we·successfully·negotiated·with·the·SOCKS·4·server. | 58 | ····//·Check·whether·we·successfully·negotiated·with·the·SOCKS·4·server. |
| 60 | ····if·(!socks_reply.success()) | 59 | ····if·(!socks_reply.success()) |
| 61 | ····{ | 60 | ····{ |
| 62 | ······std::cout·<<·"Connection·failed.\n"; | 61 | ······std::cout·<<·"Connection·failed.\n"; |
| 63 | ······std::cout·<<·"status·=·0x"·<<·std::hex·<<·socks_reply.status(); | 62 | ······std::cout·<<·"status·=·0x"·<<·std::hex·<<·socks_reply.status(); |
| 64 | ······return·1; | 63 | ······return·1; |
| 65 | ····} | 64 | ····} |
| 66 | | 65 | |
| 67 | ····//·Form·the·HTTP·request.·We·specify·the·"Connection:·close"·header·so·that | 66 | ····//·Form·the·HTTP·request.·We·specify·the·"Connection:·close"·header·so·that |
| 68 | ····//·the·server·will·close·the·socket·after·transmitting·the·response.·This | 67 | ····//·the·server·will·close·the·socket·after·transmitting·the·response.·This |
| 69 | ····//·will·allow·us·to·treat·all·data·up·until·the·EOF·as·the·response. | 68 | ····//·will·allow·us·to·treat·all·data·up·until·the·EOF·as·the·response. |
| 70 | ····std::string·request·= | 69 | ····std::string·request·= |
| 71 | ······"GET·/·HTTP/1.0\r\n" | 70 | ······"GET·/·HTTP/1.0\r\n" |
| 72 | ······"Host:·www.boost.org\r\n" | 71 | ······"Host:·www.boost.org\r\n" |
| 73 | ······"Accept:·*/*\r\n" | 72 | ······"Accept:·*/*\r\n" |
| 74 | ······"Connection:·close\r\n\r\n"; | 73 | ······"Connection:·close\r\n\r\n"; |
| 75 | | 74 | |
| 76 | ····//·Send·the·HTTP·request. | 75 | ····//·Send·the·HTTP·request. |
| 77 | ····asio::write(socket,·asio::buffer(request)); | 76 | ····asio::write(socket,·asio::buffer(request)); |
| 78 | | 77 | |
| 79 | ····//·Read·until·EOF,·writing·data·to·output·as·we·go. | 78 | ····//·Read·until·EOF,·writing·data·to·output·as·we·go. |
| 80 | ····boost::array<char,·512>·response; | 79 | ····std::array<char,·512>·response; |
| 81 | ····asio::error_code·error; | 80 | ····std::error_code·error; |
| 82 | ····while·(std::size_t·s·=·socket.read_some( | 81 | ····while·(std::size_t·s·=·socket.read_some( |
| 83 | ··········asio::buffer(response),·error)) | 82 | ··········asio::buffer(response),·error)) |
| 84 | ······std::cout.write(response.data(),·s); | 83 | ······std::cout.write(response.data(),·s); |
| 85 | ····if·(error·!=·asio::error::eof) | 84 | ····if·(error·!=·asio::error::eof) |
| 86 | ······throw·asio::system_error(error); | 85 | ······throw·std::system_error(error); |
| 87 | ··} | 86 | ··} |
| 88 | ··catch·(std::exception&·e) | 87 | ··catch·(std::exception&·e) |
| 89 | ··{ | 88 | ··{ |
| 90 | ····std::cout·<<·"Exception:·"·<<·e.what()·<<·"\n"; | 89 | ····std::cout·<<·"Exception:·"·<<·e.what()·<<·"\n"; |
| 91 | ··} | 90 | ··} |
| 92 | | 91 | |
| 93 | ··return·0; | 92 | ··return·0; |
| 94 | } | 93 | } |