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For #820, modules use service only.
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winlin
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34 changed files with 3061 additions and 2620 deletions
326
trunk/src/service/srs_service_http_conn.hpp
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326
trunk/src/service/srs_service_http_conn.hpp
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/**
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* The MIT License (MIT)
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*
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* Copyright (c) 2013-2017 OSSRS(winlin)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef SRS_SERVICE_HTTP_CONN_HPP
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#define SRS_SERVICE_HTTP_CONN_HPP
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#include <srs_core.hpp>
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#include <string>
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#include <srs_http_stack.hpp>
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class ISrsProtocolReaderWriter;
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class SrsConnection;
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class SrsFastStream;
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class SrsRequest;
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class SrsHttpResponseReader;
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class SrsStSocket;
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/**
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* wrapper for http-parser,
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* provides HTTP message originted service.
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*/
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class SrsHttpParser
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{
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private:
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http_parser_settings settings;
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http_parser parser;
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// the global parse buffer.
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SrsFastStream* buffer;
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// whether allow jsonp parse.
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bool jsonp;
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private:
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// http parse data, reset before parse message.
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bool expect_field_name;
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std::string field_name;
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std::string field_value;
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SrsHttpParseState state;
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http_parser header;
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std::string url;
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std::vector<SrsHttpHeaderField> headers;
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int header_parsed;
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public:
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SrsHttpParser();
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virtual ~SrsHttpParser();
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public:
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/**
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* initialize the http parser with specified type,
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* one parser can only parse request or response messages.
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* @param allow_jsonp whether allow jsonp parser, which indicates the method in query string.
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*/
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virtual int initialize(enum http_parser_type type, bool allow_jsonp);
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/**
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* always parse a http message,
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* that is, the *ppmsg always NOT-NULL when return success.
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* or error and *ppmsg must be NULL.
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* @remark, if success, *ppmsg always NOT-NULL, *ppmsg always is_complete().
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* @remark user must free the ppmsg if not NULL.
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*/
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virtual int parse_message(ISrsProtocolReaderWriter* io, SrsConnection* conn, ISrsHttpMessage** ppmsg);
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private:
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/**
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* parse the HTTP message to member field: msg.
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*/
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virtual int parse_message_imp(ISrsProtocolReaderWriter* io);
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private:
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static int on_message_begin(http_parser* parser);
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static int on_headers_complete(http_parser* parser);
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static int on_message_complete(http_parser* parser);
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static int on_url(http_parser* parser, const char* at, size_t length);
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static int on_header_field(http_parser* parser, const char* at, size_t length);
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static int on_header_value(http_parser* parser, const char* at, size_t length);
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static int on_body(http_parser* parser, const char* at, size_t length);
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};
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// for http header.
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typedef std::pair<std::string, std::string> SrsHttpHeaderField;
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// A Request represents an HTTP request received by a server
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// or to be sent by a client.
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//
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// The field semantics differ slightly between client and server
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// usage. In addition to the notes on the fields below, see the
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// documentation for Request.Write and RoundTripper.
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class SrsHttpMessage : public ISrsHttpMessage
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{
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private:
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/**
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* parsed url.
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*/
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std::string _url;
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/**
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* the extension of file, for example, .flv
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*/
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std::string _ext;
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/**
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* parsed http header.
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*/
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http_parser _header;
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/**
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* body object, reader object.
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* @remark, user can get body in string by get_body().
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*/
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SrsHttpResponseReader* _body;
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/**
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* whether the body is chunked.
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*/
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bool chunked;
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/**
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* whether the body is infinite chunked.
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*/
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bool infinite_chunked;
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/**
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* whether the request indicates should keep alive
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* for the http connection.
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*/
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bool keep_alive;
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/**
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* uri parser
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*/
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SrsHttpUri* _uri;
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/**
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* use a buffer to read and send ts file.
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*/
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// TODO: FIXME: remove it.
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char* _http_ts_send_buffer;
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// http headers
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std::vector<SrsHttpHeaderField> _headers;
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// the query map
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std::map<std::string, std::string> _query;
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// the transport connection, can be NULL.
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SrsConnection* conn;
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// whether request is jsonp.
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bool jsonp;
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// the method in QueryString will override the HTTP method.
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std::string jsonp_method;
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public:
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SrsHttpMessage(ISrsProtocolReaderWriter* io, SrsConnection* c);
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virtual ~SrsHttpMessage();
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public:
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/**
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* set the original messages, then update the message.
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*/
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virtual int update(std::string url, bool allow_jsonp, http_parser* header, SrsFastStream* body, std::vector<SrsHttpHeaderField>& headers);
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public:
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virtual SrsConnection* connection();
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public:
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virtual uint8_t method();
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virtual uint16_t status_code();
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/**
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* method helpers.
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*/
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virtual std::string method_str();
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virtual bool is_http_get();
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virtual bool is_http_put();
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virtual bool is_http_post();
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virtual bool is_http_delete();
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virtual bool is_http_options();
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/**
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* whether body is chunked encoding, for reader only.
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*/
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virtual bool is_chunked();
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/**
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* whether body is infinite chunked encoding.
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* @remark set by enter_infinite_chunked.
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*/
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virtual bool is_infinite_chunked();
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/**
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* whether should keep the connection alive.
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*/
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virtual bool is_keep_alive();
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/**
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* the uri contains the host and path.
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*/
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virtual std::string uri();
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/**
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* the url maybe the path.
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*/
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virtual std::string url();
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virtual std::string host();
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virtual std::string path();
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virtual std::string query();
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virtual std::string ext();
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/**
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* get the RESTful matched id.
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*/
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virtual int parse_rest_id(std::string pattern);
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public:
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virtual int enter_infinite_chunked();
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public:
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/**
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* read body to string.
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* @remark for small http body.
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*/
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virtual int body_read_all(std::string& body);
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/**
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* get the body reader, to read one by one.
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* @remark when body is very large, or chunked, use this.
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*/
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virtual ISrsHttpResponseReader* body_reader();
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/**
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* the content length, -1 for chunked or not set.
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*/
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virtual int64_t content_length();
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/**
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* get the param in query string,
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* for instance, query is "start=100&end=200",
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* then query_get("start") is "100", and query_get("end") is "200"
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*/
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virtual std::string query_get(std::string key);
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/**
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* get the headers.
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*/
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virtual int request_header_count();
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virtual std::string request_header_key_at(int index);
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virtual std::string request_header_value_at(int index);
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virtual std::string get_request_header(std::string name);
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public:
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/**
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* convert the http message to a request.
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* @remark user must free the return request.
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*/
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virtual SrsRequest* to_request(std::string vhost);
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public:
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virtual bool is_jsonp();
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};
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// the http chunked header size,
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// for writev, there always one chunk to send it.
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#define SRS_HTTP_HEADER_CACHE_SIZE 64
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/**
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* response writer use st socket
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*/
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class SrsHttpResponseWriter : public ISrsHttpResponseWriter
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{
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private:
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SrsStSocket* skt;
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SrsHttpHeader* hdr;
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private:
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char header_cache[SRS_HTTP_HEADER_CACHE_SIZE];
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iovec* iovss_cache;
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int nb_iovss_cache;
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private:
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// reply header has been (logically) written
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bool header_wrote;
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// status code passed to WriteHeader
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int status;
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private:
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// explicitly-declared Content-Length; or -1
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int64_t content_length;
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// number of bytes written in body
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int64_t written;
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private:
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// wroteHeader tells whether the header's been written to "the
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// wire" (or rather: w.conn.buf). this is unlike
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// (*response).wroteHeader, which tells only whether it was
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// logically written.
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bool header_sent;
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public:
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SrsHttpResponseWriter(SrsStSocket* io);
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virtual ~SrsHttpResponseWriter();
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public:
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virtual int final_request();
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virtual SrsHttpHeader* header();
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virtual int write(char* data, int size);
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virtual int writev(const iovec* iov, int iovcnt, ssize_t* pnwrite);
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virtual void write_header(int code);
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virtual int send_header(char* data, int size);
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};
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/**
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* response reader use st socket.
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*/
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class SrsHttpResponseReader : virtual public ISrsHttpResponseReader
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{
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private:
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ISrsProtocolReaderWriter* skt;
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SrsHttpMessage* owner;
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SrsFastStream* buffer;
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bool is_eof;
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// the left bytes in chunk.
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int nb_left_chunk;
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// the number of bytes of current chunk.
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int nb_chunk;
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// already read total bytes.
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int64_t nb_total_read;
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public:
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SrsHttpResponseReader(SrsHttpMessage* msg, ISrsProtocolReaderWriter* io);
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virtual ~SrsHttpResponseReader();
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public:
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/**
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* initialize the response reader with buffer.
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*/
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virtual int initialize(SrsFastStream* buffer);
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// interface ISrsHttpResponseReader
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public:
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virtual bool eof();
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virtual int read(char* data, int nb_data, int* nb_read);
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private:
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virtual int read_chunked(char* data, int nb_data, int* nb_read);
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virtual int read_specified(char* data, int nb_data, int* nb_read);
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};
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#endif
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