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author | 2016-11-07 10:42:23 +0100 | |
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committer | 2016-11-07 10:42:23 +0100 | |
commit | fc58a0bec8bf779af3afecbc6ca59a7b9c9c0b67 (patch) | |
tree | 011e6d736c6e191f130c066a860e7fda9d0e0014 /src/lib/http/request_parser.hpp | |
parent | ce0e6e6a3e114625e6b33a2ab75489a5b0cba17b (diff) |
Added basic HTTP server, not active yet, based on ASIO example with small refactoring included (nw)
Diffstat (limited to 'src/lib/http/request_parser.hpp')
-rw-r--r-- | src/lib/http/request_parser.hpp | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/src/lib/http/request_parser.hpp b/src/lib/http/request_parser.hpp new file mode 100644 index 00000000000..828091c6bd3 --- /dev/null +++ b/src/lib/http/request_parser.hpp @@ -0,0 +1,89 @@ +// license:Boost +// copyright-holders:Christopher M. Kohlhoff + +#ifndef HTTP_REQUEST_PARSER_HPP +#define HTTP_REQUEST_PARSER_HPP + +#include <tuple> + +namespace http { +namespace server { + +struct request; + +/// Parser for incoming requests. +class request_parser +{ +public: + /// Construct ready to parse the request method. + request_parser(); + + /// Reset to initial parser state. + void reset(); + + /// Result of parse. + enum result_type { good, bad, indeterminate }; + + /// Parse some data. The enum return value is good when a complete request has + /// been parsed, bad if the data is invalid, indeterminate when more data is + /// required. The InputIterator return value indicates how much of the input + /// has been consumed. + template <typename InputIterator> + std::tuple<result_type, InputIterator> parse(request& req, + InputIterator begin, InputIterator end) + { + while (begin != end) + { + result_type result = consume(req, *begin++); + if (result == good || result == bad) + return std::make_tuple(result, begin); + } + return std::make_tuple(indeterminate, begin); + } + +private: + /// Handle the next character of input. + result_type consume(request& req, char input); + + /// Check if a byte is an HTTP character. + static bool is_char(int c); + + /// Check if a byte is an HTTP control character. + static bool is_ctl(int c); + + /// Check if a byte is defined as an HTTP tspecial character. + static bool is_tspecial(int c); + + /// Check if a byte is a digit. + static bool is_digit(int c); + + /// The current state of the parser. + enum state + { + method_start, + method, + uri, + http_version_h, + http_version_t_1, + http_version_t_2, + http_version_p, + http_version_slash, + http_version_major_start, + http_version_major, + http_version_minor_start, + http_version_minor, + expecting_newline_1, + header_line_start, + header_lws, + header_name, + space_before_header_value, + header_value, + expecting_newline_2, + expecting_newline_3 + } m_state; +}; + +} // namespace server +} // namespace http + +#endif // HTTP_REQUEST_PARSER_HPP |