mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-01 09:01:33 +08:00
308 lines
10 KiB
C++
308 lines
10 KiB
C++
/*
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* MIT License
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*
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* Copyright (c) 2016 xiongziliang <771730766@qq.com>
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*
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* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, 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,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef SRC_HTTP_HTTPSESSION_H_
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#define SRC_HTTP_HTTPSESSION_H_
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#include <functional>
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#include "Common/config.h"
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#include "Rtsp/Rtsp.h"
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#include "Network/TcpSession.h"
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#include "Rtmp/RtmpMediaSource.h"
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#include "Rtmp/FlvMuxer.h"
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#include "HttpRequestSplitter.h"
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#include "WebSocketSplitter.h"
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using namespace std;
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using namespace ZL::Rtmp;
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using namespace ZL::Network;
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namespace ZL {
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namespace Http {
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class HttpSession: public TcpSession,
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public FlvMuxer,
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public HttpRequestSplitter,
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public WebSocketSplitter {
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public:
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typedef StrCaseMap KeyValue;
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typedef std::function<void(const string &codeOut,
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const KeyValue &headerOut,
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const string &contentOut)> HttpResponseInvoker;
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HttpSession(const std::shared_ptr<ThreadPool> &pTh, const Socket::Ptr &pSock);
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virtual ~HttpSession();
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virtual void onRecv(const Buffer::Ptr &) override;
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virtual void onError(const SockException &err) override;
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virtual void onManager() override;
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static string urlDecode(const string &str);
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protected:
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//用于HttpsSession调用
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void onRecv(const char *data,int size);
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//FlvMuxer override
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void onWrite(const Buffer::Ptr &data) override ;
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void onWrite(const char *data,int len) override;
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void onDetach() override;
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std::shared_ptr<FlvMuxer> getSharedPtr() override;
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//HttpRequestSplitter override
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int64_t onRecvHeader(const char *data,uint64_t len) override;
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void onRecvContent(const char *data,uint64_t len) override;
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/**
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* 重载之用于处理不定长度的content
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* 这个函数可用于处理大文件上传、http-flv推流
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* @param header http请求头
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* @param data content分片数据
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* @param len content分片数据大小
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* @param totalSize content总大小,如果为0则是不限长度content
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* @param recvedSize 已收数据大小
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*/
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virtual void onRecvUnlimitedContent(const Parser &header,
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const char *data,
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uint64_t len,
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uint64_t totalSize,
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uint64_t recvedSize){
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WarnL << "content数据长度过大，无法处理,请重载HttpSession::onRecvUnlimitedContent";
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shutdown();
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}
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void onWebSocketDecodeHeader(const WebSocketHeader &packet) override{
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DebugL << "默认关闭WebSocket";
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shutdown();
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};
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void onRecvWebSocketData(const Parser &header,const char *data,uint64_t len){
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WebSocketSplitter::decode((uint8_t *)data,len);
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}
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private:
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Parser m_parser;
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string m_strPath;
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Ticker m_ticker;
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uint32_t m_iReqCnt = 0;
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//消耗的总流量
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uint64_t m_ui64TotalBytes = 0;
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//flv over http
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MediaInfo m_mediaInfo;
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//处理content数据的callback
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function<bool (const char *data,uint64_t len) > m_contentCallBack;
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private:
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inline bool Handle_Req_GET(int64_t &content_len);
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inline bool Handle_Req_POST(int64_t &content_len);
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inline bool checkLiveFlvStream();
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inline bool checkWebSocket();
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inline bool emitHttpEvent(bool doInvoke);
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inline void urlDecode(Parser &parser);
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inline bool makeMeun(const string &strFullPath,const string &vhost, string &strRet);
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inline void sendNotFound(bool bClose);
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inline void sendResponse(const char *pcStatus,const KeyValue &header,const string &strContent);
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inline static KeyValue makeHttpHeader(bool bClose=false,int64_t iContentSize=-1,const char *pcContentType="text/html");
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void responseDelay(const string &Origin,bool bClose,
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const string &codeOut,const KeyValue &headerOut,
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const string &contentOut);
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};
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/**
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* 通过该模板类可以透明化WebSocket协议，
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* 用户只要实现WebSock协议下的具体业务协议，譬如基于WebSocket协议的Rtmp协议等
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* @tparam SessionType 业务协议的TcpSession类
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*/
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template <typename SessionType>
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class WebSocketSession : public HttpSession {
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public:
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WebSocketSession(const std::shared_ptr<ThreadPool> &pTh, const Socket::Ptr &pSock) : HttpSession(pTh,pSock){}
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virtual ~WebSocketSession(){}
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//收到eof或其他导致脱离TcpServer事件的回调
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void onError(const SockException &err) override{
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HttpSession::onError(err);
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if(_session){
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_session->onError(err);
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}
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}
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//每隔一段时间触发，用来做超时管理
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void onManager() override{
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HttpSession::onManager();
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if(_session){
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_session->onManager();
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}
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}
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protected:
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/**
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* 开始收到一个webSocket数据包
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* @param packet
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*/
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void onWebSocketDecodeHeader(const WebSocketHeader &packet) override{
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//新包，原来的包残余数据清空掉
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_remian_data.clear();
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if(_firstPacket){
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_firstPacket = false;
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_session = std::make_shared<SessionImp>(nullptr,_sock);
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//此处截取数据并进行websocket协议打包
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weak_ptr<WebSocketSession> weakSelf = dynamic_pointer_cast<WebSocketSession>(shared_from_this());
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_session->setOnBeforeSendCB([weakSelf](const Buffer::Ptr &buf){
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auto strongSelf = weakSelf.lock();
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if(strongSelf){
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bool mask_flag = strongSelf->_mask_flag;
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strongSelf->_mask_flag = false;
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strongSelf->WebSocketSplitter::encode((uint8_t *)buf->data(),buf->size());
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strongSelf->_mask_flag = mask_flag;
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}
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return buf->size();
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});
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}
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}
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/**
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* 收到websocket数据包负载
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* @param packet
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* @param ptr
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* @param len
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* @param recved
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*/
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void onWebSocketDecodePlayload(const WebSocketHeader &packet,const uint8_t *ptr,uint64_t len,uint64_t recved) override {
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if(packet._playload_len == recved){
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//收到完整的包
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if(_remian_data.empty()){
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onRecvWholePacket((char *)ptr,len);
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}else{
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_remian_data.append((char *)ptr,len);
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onRecvWholePacket(_remian_data);
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_remian_data.clear();
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}
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} else {
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//部分数据
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_remian_data.append((char *)ptr,len);
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}
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}
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/**
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* 发送数据进行websocket协议打包后回调
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* @param ptr
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* @param len
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*/
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void onWebSocketEncodeData(const uint8_t *ptr,uint64_t len) override{
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_session->realSend(_session->obtainBuffer((char *)ptr,len));
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}
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/**
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* 收到一个完整的websock数据包
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* @param data
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* @param len
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*/
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void onRecvWholePacket(const char *data,uint64_t len){
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BufferRaw::Ptr buffer = _session->obtainBuffer(data,len);
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_session->onRecv(buffer);
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}
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/**
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* 收到一个完整的websock数据包
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* @param str
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*/
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void onRecvWholePacket(const string &str){
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BufferString::Ptr buffer = std::make_shared<BufferString>(str);
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_session->onRecv(buffer);
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}
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private:
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typedef function<int(const Buffer::Ptr &buf)> onBeforeSendCB;
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/**
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* 该类实现了TcpSession派生类发送数据的截取
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* 目的是发送业务数据前进行websocket协议的打包
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*/
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class SessionImp : public SessionType{
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public:
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SessionImp(const std::shared_ptr<ThreadPool> &pTh, const Socket::Ptr &pSock) : SessionType(pTh,pSock){};
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~SessionImp(){}
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/**
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* 截取到数据后，再进行webSocket协议打包
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* 然后真正的发送数据到socket
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* @param buf 数据
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* @return 数据字节数
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*/
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int realSend(const Buffer::Ptr &buf){
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return SessionType::send(buf);
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}
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/**
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* 设置发送数据截取回调函数
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* @param cb 截取回调函数
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*/
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void setOnBeforeSendCB(const onBeforeSendCB &cb){
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_beforeSendCB = cb;
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}
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protected:
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/**
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* 重载send函数截取数据
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* @param buf 需要截取的数据
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* @return 数据字节数
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*/
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int send(const Buffer::Ptr &buf) override {
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if(_beforeSendCB){
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return _beforeSendCB(buf);
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}
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return SessionType::send(buf);
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}
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private:
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onBeforeSendCB _beforeSendCB;
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};
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private:
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std::shared_ptr<SessionImp> _session;
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string _remian_data;
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bool _firstPacket = true;
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};
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/**
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* 回显会话
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*/
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class EchoSession : public TcpSession {
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public:
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EchoSession(const std::shared_ptr<ThreadPool> &pTh, const Socket::Ptr &pSock) : TcpSession(pTh,pSock){};
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virtual ~EchoSession(){};
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void onRecv(const Buffer::Ptr &buffer) override {
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send(buffer);
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}
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void onError(const SockException &err) override{
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WarnL << err.what();
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}
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//每隔一段时间触发，用来做超时管理
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void onManager() override{
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DebugL;
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}
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};
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typedef WebSocketSession<EchoSession> EchoWebSocketSession;
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} /* namespace Http */
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} /* namespace ZL */
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#endif /* SRC_HTTP_HTTPSESSION_H_ */
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