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Merge service to protocol
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winlin
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17 changed files with 21 additions and 35 deletions
284
trunk/src/protocol/srs_service_http_conn.hpp
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284
trunk/src/protocol/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) 2013-2020 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 ISrsConnection;
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class SrsFastStream;
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class SrsRequest;
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class ISrsReader;
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class SrsHttpResponseReader;
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class ISrsProtocolReadWriter;
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// A wrapper for http-parser,
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// provides HTTP message originted service.
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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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std::string field_name;
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std::string field_value;
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SrsHttpParseState state;
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http_parser hp_header;
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std::string url;
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SrsHttpHeader* header;
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private:
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// Point to the start of body.
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const char* p_body_start;
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// To discover the length of header, point to the last few bytes in header.
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const char* p_header_tail;
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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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// 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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virtual srs_error_t initialize(enum http_parser_type type, bool allow_jsonp = false);
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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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virtual srs_error_t parse_message(ISrsReader* reader, ISrsHttpMessage** ppmsg);
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private:
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// parse the HTTP message to member field: msg.
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virtual srs_error_t parse_message_imp(ISrsReader* reader);
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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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// 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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// The body object, reader object.
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// @remark, user can get body in string by get_body().
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SrsHttpResponseReader* _body;
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// Whether the body is infinite chunked.
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bool infinite_chunked;
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// Use a buffer to read and send ts file.
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// The transport connection, can be NULL.
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ISrsConnection* owner_conn;
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private:
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uint8_t _method;
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uint16_t _status;
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int64_t _content_length;
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private:
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// The http headers
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SrsHttpHeader _header;
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// Whether the request indicates should keep alive for the http connection.
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bool _keep_alive;
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// Whether the body is chunked.
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bool chunked;
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private:
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// The parsed url.
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std::string _url;
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// The extension of file, for example, .flv
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std::string _ext;
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// The uri parser
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SrsHttpUri* _uri;
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// The query map
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std::map<std::string, std::string> _query;
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private:
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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(ISrsReader* reader = NULL, SrsFastStream* buffer = NULL);
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virtual ~SrsHttpMessage();
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public:
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// Set the basic information for HTTP request.
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// @remark User must call set_basic before set_header, because the content_length will be overwrite by header.
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virtual void set_basic(uint8_t method, uint16_t status, int64_t content_length);
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// Set HTTP header and whether the request require keep alive.
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// @remark User must call set_header before set_url, because the Host in header is used for url.
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virtual void set_header(SrsHttpHeader* header, bool keep_alive);
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// set the original messages, then update the message.
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virtual srs_error_t set_url(std::string url, bool allow_jsonp);
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public:
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// Get the owner connection, maybe NULL.
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virtual ISrsConnection* connection();
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virtual void set_connection(ISrsConnection* conn);
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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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// The method helpers.
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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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// Whether body is chunked encoding, for reader only.
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virtual bool is_chunked();
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// Whether body is infinite chunked encoding.
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// @remark set by enter_infinite_chunked.
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virtual bool is_infinite_chunked();
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// Whether should keep the connection alive.
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virtual bool is_keep_alive();
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// The uri contains the host and path.
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virtual std::string uri();
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// The url maybe the path.
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virtual std::string url();
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virtual std::string host();
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virtual int port();
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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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// Get the RESTful matched id.
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virtual int parse_rest_id(std::string pattern);
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public:
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virtual srs_error_t enter_infinite_chunked();
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public:
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// Read body to string.
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// @remark for small http body.
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virtual srs_error_t body_read_all(std::string& body);
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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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virtual ISrsHttpResponseReader* body_reader();
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// The content length, -1 for chunked or not set.
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virtual int64_t content_length();
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// Get the param in query string, 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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virtual std::string query_get(std::string key);
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// Get the headers.
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virtual SrsHttpHeader* header();
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public:
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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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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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class ISrsHttpHeaderFilter
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{
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public:
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ISrsHttpHeaderFilter();
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virtual ~ISrsHttpHeaderFilter();
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public:
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// Filter the HTTP header h.
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virtual srs_error_t filter(SrsHttpHeader* h) = 0;
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};
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// Response writer use st socket
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class SrsHttpResponseWriter : public ISrsHttpResponseWriter
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{
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private:
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ISrsProtocolReadWriter* skt;
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SrsHttpHeader* hdr;
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// Before writing header, there is a chance to filter it,
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// such as remove some headers or inject new.
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ISrsHttpHeaderFilter* hf;
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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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// The status code passed to WriteHeader
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int status;
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private:
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// The explicitly-declared Content-Length; or -1
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int64_t content_length;
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// The number of bytes written in body
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int64_t written;
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private:
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// The 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(ISrsProtocolReadWriter* io);
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virtual ~SrsHttpResponseWriter();
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public:
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virtual srs_error_t final_request();
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virtual SrsHttpHeader* header();
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virtual srs_error_t write(char* data, int size);
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virtual srs_error_t writev(const iovec* iov, int iovcnt, ssize_t* pnwrite);
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virtual void write_header(int code);
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virtual srs_error_t send_header(char* data, int size);
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};
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// Response reader use st socket.
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class SrsHttpResponseReader : virtual public ISrsHttpResponseReader
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{
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private:
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ISrsReader* 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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size_t nb_left_chunk;
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// The number of bytes of current chunk.
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size_t 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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// Generally the reader is the under-layer io such as socket,
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// while buffer is a fast cache which may have cached some data from reader.
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SrsHttpResponseReader(SrsHttpMessage* msg, ISrsReader* reader, SrsFastStream* buffer);
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virtual ~SrsHttpResponseReader();
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// Interface ISrsHttpResponseReader
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public:
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virtual bool eof();
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virtual srs_error_t read(void* buf, size_t size, ssize_t* nread);
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private:
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virtual srs_error_t read_chunked(void* buf, size_t size, ssize_t* nread);
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virtual srs_error_t read_specified(void* buf, size_t size, ssize_t* nread);
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};
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#endif
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