mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-26 20:47:08 +08:00
814 lines
28 KiB
C++
814 lines
28 KiB
C++
/*
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* Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
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*
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* This file is part of ZLMediaKit(https://github.com/xia-chu/ZLMediaKit).
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*
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* Use of this source code is governed by MIT license that can be found in the
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* LICENSE file in the root of the source tree. All contributing project authors
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* may be found in the AUTHORS file in the root of the source tree.
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*/
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#include <stdio.h>
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#include <sys/stat.h>
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#include <algorithm>
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#include "Common/config.h"
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#include "strCoding.h"
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#include "HttpSession.h"
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#include "HttpConst.h"
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#include "Util/base64.h"
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#include "Util/SHA1.h"
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using namespace std;
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using namespace toolkit;
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namespace mediakit {
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HttpSession::HttpSession(const Socket::Ptr &pSock) : Session(pSock) {
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GET_CONFIG(uint32_t,keep_alive_sec,Http::kKeepAliveSecond);
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pSock->setSendTimeOutSecond(keep_alive_sec);
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}
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HttpSession::~HttpSession() = default;
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void HttpSession::Handle_Req_HEAD(ssize_t &content_len){
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//暂时全部返回200 OK，因为HTTP GET存在按需生成流的操作，所以不能按照HTTP GET的流程返回
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//如果直接返回404，那么又会导致按需生成流的逻辑失效，所以HTTP HEAD在静态文件或者已存在资源时才有效
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//对于按需生成流的直播场景并不适用
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sendResponse(200, false);
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}
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void HttpSession::Handle_Req_OPTIONS(ssize_t &content_len) {
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KeyValue header;
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header.emplace("Allow", "GET, POST, OPTIONS");
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header.emplace("Access-Control-Allow-Origin", "*");
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header.emplace("Access-Control-Allow-Credentials", "true");
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header.emplace("Access-Control-Request-Methods", "GET, POST, OPTIONS");
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header.emplace("Access-Control-Request-Headers", "Accept,Accept-Language,Content-Language,Content-Type");
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sendResponse(200, true, nullptr, header);
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}
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ssize_t HttpSession::onRecvHeader(const char *header,size_t len) {
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typedef void (HttpSession::*HttpCMDHandle)(ssize_t &);
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static unordered_map<string, HttpCMDHandle> s_func_map;
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static onceToken token([]() {
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s_func_map.emplace("GET",&HttpSession::Handle_Req_GET);
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s_func_map.emplace("POST",&HttpSession::Handle_Req_POST);
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s_func_map.emplace("HEAD",&HttpSession::Handle_Req_HEAD);
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s_func_map.emplace("OPTIONS",&HttpSession::Handle_Req_OPTIONS);
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}, nullptr);
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_parser.Parse(header);
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CHECK(_parser.Url()[0] == '/');
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urlDecode(_parser);
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string cmd = _parser.Method();
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auto it = s_func_map.find(cmd);
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if (it == s_func_map.end()) {
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WarnP(this) << "不支持该命令:" << cmd;
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sendResponse(405, true);
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return 0;
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}
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//跨域
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_origin = _parser["Origin"];
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//默认后面数据不是content而是header
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ssize_t content_len = 0;
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(this->*(it->second))(content_len);
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//清空解析器节省内存
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_parser.Clear();
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//返回content长度
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return content_len;
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}
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void HttpSession::onRecvContent(const char *data,size_t len) {
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if(_contentCallBack){
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if(!_contentCallBack(data,len)){
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_contentCallBack = nullptr;
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}
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}
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}
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void HttpSession::onRecv(const Buffer::Ptr &pBuf) {
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_ticker.resetTime();
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input(pBuf->data(),pBuf->size());
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}
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void HttpSession::onError(const SockException& err) {
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if (_is_live_stream) {
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//flv/ts播放器
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uint64_t duration = _ticker.createdTime() / 1000;
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WarnP(this) << "FLV/TS/FMP4播放器("
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<< _mediaInfo.shortUrl()
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<< ")断开:" << err
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<< ",耗时(s):" << duration;
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GET_CONFIG(uint32_t, iFlowThreshold, General::kFlowThreshold);
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if (_total_bytes_usage >= iFlowThreshold * 1024) {
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NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastFlowReport, _mediaInfo, _total_bytes_usage,
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duration, true, static_cast<SockInfo &>(*this));
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}
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return;
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}
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}
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void HttpSession::onManager() {
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GET_CONFIG(uint32_t,keepAliveSec,Http::kKeepAliveSecond);
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if(_ticker.elapsedTime() > keepAliveSec * 1000){
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//1分钟超时
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shutdown(SockException(Err_timeout,"session timeout"));
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}
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}
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bool HttpSession::checkWebSocket(){
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auto Sec_WebSocket_Key = _parser["Sec-WebSocket-Key"];
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if (Sec_WebSocket_Key.empty()) {
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return false;
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}
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auto Sec_WebSocket_Accept = encodeBase64(SHA1::encode_bin(Sec_WebSocket_Key + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"));
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KeyValue headerOut;
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headerOut["Upgrade"] = "websocket";
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headerOut["Connection"] = "Upgrade";
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headerOut["Sec-WebSocket-Accept"] = Sec_WebSocket_Accept;
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if (!_parser["Sec-WebSocket-Protocol"].empty()) {
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headerOut["Sec-WebSocket-Protocol"] = _parser["Sec-WebSocket-Protocol"];
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}
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auto res_cb = [this, headerOut]() {
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_live_over_websocket = true;
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sendResponse(101, false, nullptr, headerOut, nullptr, true);
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};
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//判断是否为websocket-flv
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if (checkLiveStreamFlv(res_cb)) {
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//这里是websocket-flv直播请求
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return true;
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}
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//判断是否为websocket-ts
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if (checkLiveStreamTS(res_cb)) {
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//这里是websocket-ts直播请求
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return true;
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}
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//判断是否为websocket-fmp4
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if (checkLiveStreamFMP4(res_cb)) {
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//这里是websocket-fmp4直播请求
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return true;
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}
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//这是普通的websocket连接
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if (!onWebSocketConnect(_parser)) {
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sendResponse(501, true, nullptr, headerOut);
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return true;
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}
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sendResponse(101, false, nullptr, headerOut, nullptr, true);
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return true;
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}
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bool HttpSession::checkLiveStream(const string &schema, const string &url_suffix, const function<void(const MediaSource::Ptr &src)> &cb){
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std::string url = _parser.Url();
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auto it = _parser.getUrlArgs().find("schema");
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if (it != _parser.getUrlArgs().end()) {
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if (strcasecmp(it->second.c_str(), schema.c_str())) {
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// unsupported schema
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return false;
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}
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} else {
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auto prefix_size = url_suffix.size();
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if (url.size() < prefix_size || strcasecmp(url.data() + (url.size() - prefix_size), url_suffix.data())) {
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//未找到后缀
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return false;
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}
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// url去除特殊后缀
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url.resize(url.size() - prefix_size);
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}
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//带参数的url
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if (!_parser.Params().empty()) {
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url += "?";
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url += _parser.Params();
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}
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//解析带上协议+参数完整的url
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_mediaInfo.parse(schema + "://" + _parser["Host"] + url);
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if (_mediaInfo._app.empty() || _mediaInfo._streamid.empty()) {
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//url不合法
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return false;
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}
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bool close_flag = !strcasecmp(_parser["Connection"].data(), "close");
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weak_ptr<HttpSession> weak_self = dynamic_pointer_cast<HttpSession>(shared_from_this());
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//鉴权结果回调
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auto onRes = [cb, weak_self, close_flag](const string &err) {
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auto strong_self = weak_self.lock();
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if (!strong_self) {
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//本对象已经销毁
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return;
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}
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if (!err.empty()) {
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//播放鉴权失败
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strong_self->sendResponse(401, close_flag, nullptr, KeyValue(), std::make_shared<HttpStringBody>(err));
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return;
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}
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//异步查找直播流
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MediaSource::findAsync(strong_self->_mediaInfo, strong_self, [weak_self, close_flag, cb](const MediaSource::Ptr &src) {
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auto strong_self = weak_self.lock();
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if (!strong_self) {
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//本对象已经销毁
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return;
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}
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if (!src) {
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//未找到该流
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strong_self->sendNotFound(close_flag);
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} else {
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strong_self->_is_live_stream = true;
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//触发回调
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cb(src);
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}
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});
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};
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Broadcast::AuthInvoker invoker = [weak_self, onRes](const string &err) {
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if (auto strong_self = weak_self.lock()) {
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strong_self->async([onRes, err]() { onRes(err); });
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}
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};
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auto flag = NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastMediaPlayed, _mediaInfo, invoker, static_cast<SockInfo &>(*this));
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if (!flag) {
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//该事件无人监听,默认不鉴权
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onRes("");
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}
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return true;
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}
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//http-fmp4 链接格式:http://vhost-url:port/app/streamid.live.mp4?key1=value1&key2=value2
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bool HttpSession::checkLiveStreamFMP4(const function<void()> &cb){
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return checkLiveStream(FMP4_SCHEMA, ".live.mp4", [this, cb](const MediaSource::Ptr &src) {
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auto fmp4_src = dynamic_pointer_cast<FMP4MediaSource>(src);
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assert(fmp4_src);
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if (!cb) {
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//找到源，发送http头，负载后续发送
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sendResponse(200, false, HttpFileManager::getContentType(".mp4").data(), KeyValue(), nullptr, true);
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} else {
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//自定义发送http头
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cb();
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}
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//直播牺牲延时提升发送性能
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setSocketFlags();
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onWrite(std::make_shared<BufferString>(fmp4_src->getInitSegment()), true);
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weak_ptr<HttpSession> weak_self = dynamic_pointer_cast<HttpSession>(shared_from_this());
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fmp4_src->pause(false);
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_fmp4_reader = fmp4_src->getRing()->attach(getPoller());
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_fmp4_reader->setGetInfoCB([weak_self]() { return weak_self.lock(); });
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_fmp4_reader->setDetachCB([weak_self]() {
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auto strong_self = weak_self.lock();
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if (!strong_self) {
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//本对象已经销毁
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return;
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}
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strong_self->shutdown(SockException(Err_shutdown, "fmp4 ring buffer detached"));
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});
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_fmp4_reader->setReadCB([weak_self](const FMP4MediaSource::RingDataType &fmp4_list) {
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auto strong_self = weak_self.lock();
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if (!strong_self) {
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//本对象已经销毁
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return;
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}
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size_t i = 0;
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auto size = fmp4_list->size();
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fmp4_list->for_each([&](const FMP4Packet::Ptr &ts) {
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strong_self->onWrite(ts, ++i == size);
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});
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});
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});
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}
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//http-ts 链接格式:http://vhost-url:port/app/streamid.live.ts?key1=value1&key2=value2
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bool HttpSession::checkLiveStreamTS(const function<void()> &cb){
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return checkLiveStream(TS_SCHEMA, ".live.ts", [this, cb](const MediaSource::Ptr &src) {
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auto ts_src = dynamic_pointer_cast<TSMediaSource>(src);
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assert(ts_src);
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if (!cb) {
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//找到源，发送http头，负载后续发送
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sendResponse(200, false, HttpFileManager::getContentType(".ts").data(), KeyValue(), nullptr, true);
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} else {
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//自定义发送http头
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cb();
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}
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//直播牺牲延时提升发送性能
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setSocketFlags();
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weak_ptr<HttpSession> weak_self = dynamic_pointer_cast<HttpSession>(shared_from_this());
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ts_src->pause(false);
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_ts_reader = ts_src->getRing()->attach(getPoller());
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_ts_reader->setGetInfoCB([weak_self]() { return weak_self.lock(); });
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_ts_reader->setDetachCB([weak_self](){
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auto strong_self = weak_self.lock();
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if (!strong_self) {
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//本对象已经销毁
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return;
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}
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strong_self->shutdown(SockException(Err_shutdown,"ts ring buffer detached"));
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});
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_ts_reader->setReadCB([weak_self](const TSMediaSource::RingDataType &ts_list) {
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auto strong_self = weak_self.lock();
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if (!strong_self) {
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//本对象已经销毁
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return;
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}
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size_t i = 0;
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auto size = ts_list->size();
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ts_list->for_each([&](const TSPacket::Ptr &ts) {
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strong_self->onWrite(ts, ++i == size);
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});
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});
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});
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}
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//http-flv 链接格式:http://vhost-url:port/app/streamid.live.flv?key1=value1&key2=value2
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bool HttpSession::checkLiveStreamFlv(const function<void()> &cb){
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auto start_pts = atoll(_parser.getUrlArgs()["starPts"].data());
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return checkLiveStream(RTMP_SCHEMA, ".live.flv", [this, cb, start_pts](const MediaSource::Ptr &src) {
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auto rtmp_src = dynamic_pointer_cast<RtmpMediaSource>(src);
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assert(rtmp_src);
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if (!cb) {
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//找到源，发送http头，负载后续发送
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sendResponse(200, false, HttpFileManager::getContentType(".flv").data(), KeyValue(), nullptr, true);
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} else {
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//自定义发送http头
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cb();
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}
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//直播牺牲延时提升发送性能
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setSocketFlags();
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//非H264/AAC时打印警告日志，防止用户提无效问题
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auto tracks = src->getTracks(false);
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for (auto &track : tracks) {
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switch (track->getCodecId()) {
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case CodecH264:
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case CodecAAC:
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break;
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default: {
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WarnP(this) << "flv播放器一般只支持H264和AAC编码,该编码格式可能不被播放器支持:" << track->getCodecName();
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break;
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}
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}
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}
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start(getPoller(), rtmp_src, start_pts);
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});
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}
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void HttpSession::Handle_Req_GET(ssize_t &content_len) {
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Handle_Req_GET_l(content_len, true);
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}
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void HttpSession::Handle_Req_GET_l(ssize_t &content_len, bool sendBody) {
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//先看看是否为WebSocket请求
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if (checkWebSocket()) {
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content_len = -1;
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_contentCallBack = [this](const char *data, size_t len) {
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WebSocketSplitter::decode((uint8_t *) data, len);
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//_contentCallBack是可持续的，后面还要处理后续数据
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return true;
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};
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return;
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}
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if (emitHttpEvent(false)) {
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//拦截http api事件
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return;
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}
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if (checkLiveStreamFlv()) {
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//拦截http-flv播放器
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return;
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}
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if (checkLiveStreamTS()) {
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//拦截http-ts播放器
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return;
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}
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if (checkLiveStreamFMP4()) {
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//拦截http-fmp4播放器
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return;
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}
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bool bClose = !strcasecmp(_parser["Connection"].data(),"close");
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weak_ptr<HttpSession> weak_self = dynamic_pointer_cast<HttpSession>(shared_from_this());
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HttpFileManager::onAccessPath(*this, _parser, [weak_self, bClose](int code, const string &content_type,
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const StrCaseMap &responseHeader, const HttpBody::Ptr &body) {
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auto strong_self = weak_self.lock();
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if (!strong_self) {
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return;
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}
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strong_self->async([weak_self, bClose, code, content_type, responseHeader, body]() {
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auto strong_self = weak_self.lock();
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if (!strong_self) {
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return;
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}
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strong_self->sendResponse(code, bClose, content_type.data(), responseHeader, body);
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});
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});
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}
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static string dateStr() {
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char buf[64];
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time_t tt = time(NULL);
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strftime(buf, sizeof buf, "%a, %b %d %Y %H:%M:%S GMT", gmtime(&tt));
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return buf;
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}
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class AsyncSenderData {
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public:
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friend class AsyncSender;
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using Ptr = std::shared_ptr<AsyncSenderData>;
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AsyncSenderData(const Session::Ptr &session, const HttpBody::Ptr &body, bool close_when_complete) {
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_session = dynamic_pointer_cast<HttpSession>(session);
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_body = body;
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_close_when_complete = close_when_complete;
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}
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~AsyncSenderData() = default;
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private:
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std::weak_ptr<HttpSession> _session;
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HttpBody::Ptr _body;
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bool _close_when_complete;
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bool _read_complete = false;
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};
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class AsyncSender {
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public:
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using Ptr = std::shared_ptr<AsyncSender>;
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static bool onSocketFlushed(const AsyncSenderData::Ptr &data) {
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if (data->_read_complete) {
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if (data->_close_when_complete) {
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//发送完毕需要关闭socket
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shutdown(data->_session.lock());
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}
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return false;
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}
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GET_CONFIG(uint32_t, sendBufSize, Http::kSendBufSize);
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data->_body->readDataAsync(sendBufSize, [data](const Buffer::Ptr &sendBuf) {
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auto session = data->_session.lock();
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if (!session) {
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//本对象已经销毁
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return;
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}
|
||
session->async([data, sendBuf]() {
|
||
auto session = data->_session.lock();
|
||
if (!session) {
|
||
//本对象已经销毁
|
||
return;
|
||
}
|
||
onRequestData(data, session, sendBuf);
|
||
}, false);
|
||
});
|
||
return true;
|
||
}
|
||
|
||
private:
|
||
static void onRequestData(const AsyncSenderData::Ptr &data, const std::shared_ptr<HttpSession> &session, const Buffer::Ptr &sendBuf) {
|
||
session->_ticker.resetTime();
|
||
if (sendBuf && session->send(sendBuf) != -1) {
|
||
//文件还未读完，还需要继续发送
|
||
if (!session->isSocketBusy()) {
|
||
//socket还可写，继续请求数据
|
||
onSocketFlushed(data);
|
||
}
|
||
return;
|
||
}
|
||
//文件写完了
|
||
data->_read_complete = true;
|
||
if (!session->isSocketBusy() && data->_close_when_complete) {
|
||
shutdown(session);
|
||
}
|
||
}
|
||
|
||
static void shutdown(const std::shared_ptr<HttpSession> &session) {
|
||
if(session){
|
||
session->shutdown(SockException(Err_shutdown, StrPrinter << "close connection after send http body completed."));
|
||
}
|
||
}
|
||
};
|
||
|
||
static const string kDate = "Date";
|
||
static const string kServer = "Server";
|
||
static const string kConnection = "Connection";
|
||
static const string kKeepAlive = "Keep-Alive";
|
||
static const string kContentType = "Content-Type";
|
||
static const string kContentLength = "Content-Length";
|
||
static const string kAccessControlAllowOrigin = "Access-Control-Allow-Origin";
|
||
static const string kAccessControlAllowCredentials = "Access-Control-Allow-Credentials";
|
||
|
||
void HttpSession::sendResponse(int code,
|
||
bool bClose,
|
||
const char *pcContentType,
|
||
const HttpSession::KeyValue &header,
|
||
const HttpBody::Ptr &body,
|
||
bool no_content_length ){
|
||
GET_CONFIG(string,charSet,Http::kCharSet);
|
||
GET_CONFIG(uint32_t,keepAliveSec,Http::kKeepAliveSecond);
|
||
|
||
//body默认为空
|
||
int64_t size = 0;
|
||
if (body && body->remainSize()) {
|
||
//有body，获取body大小
|
||
size = body->remainSize();
|
||
}
|
||
|
||
if (no_content_length) {
|
||
// http-flv直播是Keep-Alive类型
|
||
bClose = false;
|
||
} else if ((size_t)size >= SIZE_MAX || size < 0) {
|
||
//不固定长度的body，那么发送完body后应该关闭socket，以便浏览器做下载完毕的判断
|
||
bClose = true;
|
||
}
|
||
|
||
HttpSession::KeyValue &headerOut = const_cast<HttpSession::KeyValue &>(header);
|
||
headerOut.emplace(kDate, dateStr());
|
||
headerOut.emplace(kServer, kServerName);
|
||
headerOut.emplace(kConnection, bClose ? "close" : "keep-alive");
|
||
if (!bClose) {
|
||
string keepAliveString = "timeout=";
|
||
keepAliveString += to_string(keepAliveSec);
|
||
keepAliveString += ", max=100";
|
||
headerOut.emplace(kKeepAlive, std::move(keepAliveString));
|
||
}
|
||
|
||
if (!_origin.empty()) {
|
||
//设置跨域
|
||
headerOut.emplace(kAccessControlAllowOrigin, _origin);
|
||
headerOut.emplace(kAccessControlAllowCredentials, "true");
|
||
}
|
||
|
||
if (!no_content_length && size >= 0 && (size_t)size < SIZE_MAX) {
|
||
//文件长度为固定值,且不是http-flv强制设置Content-Length
|
||
headerOut[kContentLength] = to_string(size);
|
||
}
|
||
|
||
if (size && !pcContentType) {
|
||
//有body时，设置缺省类型
|
||
pcContentType = "text/plain";
|
||
}
|
||
|
||
if ((size || no_content_length) && pcContentType) {
|
||
//有body时，设置文件类型
|
||
string strContentType = pcContentType;
|
||
strContentType += "; charset=";
|
||
strContentType += charSet;
|
||
headerOut.emplace(kContentType, std::move(strContentType));
|
||
}
|
||
|
||
//发送http头
|
||
string str;
|
||
str.reserve(256);
|
||
str += "HTTP/1.1 ";
|
||
str += to_string(code);
|
||
str += ' ';
|
||
str += getHttpStatusMessage(code);
|
||
str += "\r\n";
|
||
for (auto &pr : header) {
|
||
str += pr.first;
|
||
str += ": ";
|
||
str += pr.second;
|
||
str += "\r\n";
|
||
}
|
||
str += "\r\n";
|
||
SockSender::send(std::move(str));
|
||
_ticker.resetTime();
|
||
|
||
if (!size) {
|
||
//没有body
|
||
if (bClose) {
|
||
shutdown(SockException(Err_shutdown,StrPrinter << "close connection after send http header completed with status code:" << code));
|
||
}
|
||
return;
|
||
}
|
||
|
||
#if 0
|
||
//sendfile跟共享mmap相比并没有性能上的优势，相反，sendfile还有功能上的缺陷，先屏蔽
|
||
if (typeid(*this) == typeid(HttpSession) && !body->sendFile(getSock()->rawFD())) {
|
||
// http支持sendfile优化
|
||
return;
|
||
}
|
||
#endif
|
||
|
||
GET_CONFIG(uint32_t, sendBufSize, Http::kSendBufSize);
|
||
if (body->remainSize() > sendBufSize) {
|
||
//文件下载提升发送性能
|
||
setSocketFlags();
|
||
}
|
||
|
||
//发送http body
|
||
AsyncSenderData::Ptr data = std::make_shared<AsyncSenderData>(static_pointer_cast<Session>(shared_from_this()), body, bClose);
|
||
getSock()->setOnFlush([data]() { return AsyncSender::onSocketFlushed(data); });
|
||
AsyncSender::onSocketFlushed(data);
|
||
}
|
||
|
||
string HttpSession::urlDecode(const string &str){
|
||
auto ret = strCoding::UrlDecode(str);
|
||
#ifdef _WIN32
|
||
GET_CONFIG(string,charSet,Http::kCharSet);
|
||
bool isGb2312 = !strcasecmp(charSet.data(), "gb2312");
|
||
if (isGb2312) {
|
||
ret = strCoding::UTF8ToGB2312(ret);
|
||
}
|
||
#endif // _WIN32
|
||
return ret;
|
||
}
|
||
|
||
void HttpSession::urlDecode(Parser &parser){
|
||
parser.setUrl(urlDecode(parser.Url()));
|
||
for(auto &pr : _parser.getUrlArgs()){
|
||
const_cast<string &>(pr.second) = urlDecode(pr.second);
|
||
}
|
||
}
|
||
|
||
bool HttpSession::emitHttpEvent(bool doInvoke){
|
||
bool bClose = !strcasecmp(_parser["Connection"].data(),"close");
|
||
/////////////////////异步回复Invoker///////////////////////////////
|
||
weak_ptr<HttpSession> weak_self = dynamic_pointer_cast<HttpSession>(shared_from_this());
|
||
HttpResponseInvoker invoker = [weak_self,bClose](int code, const KeyValue &headerOut, const HttpBody::Ptr &body){
|
||
auto strong_self = weak_self.lock();
|
||
if(!strong_self) {
|
||
return;
|
||
}
|
||
strong_self->async([weak_self, bClose, code, headerOut, body]() {
|
||
auto strong_self = weak_self.lock();
|
||
if (!strong_self) {
|
||
//本对象已经销毁
|
||
return;
|
||
}
|
||
strong_self->sendResponse(code, bClose, nullptr, headerOut, body);
|
||
});
|
||
};
|
||
///////////////////广播HTTP事件///////////////////////////
|
||
bool consumed = false;//该事件是否被消费
|
||
NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastHttpRequest,_parser,invoker,consumed,static_cast<SockInfo &>(*this));
|
||
if(!consumed && doInvoke){
|
||
//该事件无人消费，所以返回404
|
||
invoker(404,KeyValue(), HttpBody::Ptr());
|
||
}
|
||
return consumed;
|
||
}
|
||
|
||
std::string HttpSession::get_peer_ip() {
|
||
GET_CONFIG(string, forwarded_ip_header, Http::kForwardedIpHeader);
|
||
if(!forwarded_ip_header.empty() && !_parser.getHeader()[forwarded_ip_header].empty()){
|
||
return _parser.getHeader()[forwarded_ip_header];
|
||
}
|
||
return Session::get_peer_ip();
|
||
}
|
||
|
||
void HttpSession::Handle_Req_POST(ssize_t &content_len) {
|
||
GET_CONFIG(size_t,maxReqSize,Http::kMaxReqSize);
|
||
|
||
ssize_t totalContentLen = _parser["Content-Length"].empty() ? -1 : atoll(_parser["Content-Length"].data());
|
||
|
||
if(totalContentLen == 0){
|
||
//content为空
|
||
//emitHttpEvent内部会选择是否关闭连接
|
||
emitHttpEvent(true);
|
||
return;
|
||
}
|
||
|
||
if(totalContentLen > 0 && (size_t)totalContentLen < maxReqSize ){
|
||
//返回固定长度的content
|
||
content_len = totalContentLen;
|
||
auto parserCopy = _parser;
|
||
_contentCallBack = [this,parserCopy](const char *data,size_t len){
|
||
//恢复http头
|
||
_parser = parserCopy;
|
||
//设置content
|
||
_parser.setContent(string(data,len));
|
||
//触发http事件，emitHttpEvent内部会选择是否关闭连接
|
||
emitHttpEvent(true);
|
||
//清空数据,节省内存
|
||
_parser.Clear();
|
||
//content已经接收完毕
|
||
return false;
|
||
};
|
||
}else{
|
||
//返回不固定长度的content或者超过长度限制的content
|
||
content_len = -1;
|
||
auto parserCopy = _parser;
|
||
std::shared_ptr<size_t> recvedContentLen = std::make_shared<size_t>(0);
|
||
bool bClose = !strcasecmp(_parser["Connection"].data(),"close");
|
||
|
||
_contentCallBack = [this,parserCopy,totalContentLen,recvedContentLen,bClose](const char *data,size_t len){
|
||
*(recvedContentLen) += len;
|
||
if (totalContentLen < 0) {
|
||
//不固定长度的content,源源不断接收数据
|
||
onRecvUnlimitedContent(parserCopy, data, len, SIZE_MAX, *(recvedContentLen));
|
||
return true;
|
||
}
|
||
|
||
//长度超过限制的content
|
||
onRecvUnlimitedContent(parserCopy,data,len,totalContentLen,*(recvedContentLen));
|
||
|
||
if(*(recvedContentLen) < (size_t)totalContentLen){
|
||
//数据还没接收完毕
|
||
//_contentCallBack是可持续的，后面还要处理后续content数据
|
||
return true;
|
||
}
|
||
|
||
//数据接收完毕
|
||
if(!bClose){
|
||
//keep-alive类型连接
|
||
//content接收完毕，后续都是http header
|
||
setContentLen(0);
|
||
//content已经接收完毕
|
||
return false;
|
||
}
|
||
|
||
//连接类型是close类型，收完content就关闭连接
|
||
shutdown(SockException(Err_shutdown,"recv http content completed"));
|
||
//content已经接收完毕
|
||
return false ;
|
||
};
|
||
}
|
||
//有后续content数据要处理,暂时不关闭连接
|
||
}
|
||
|
||
void HttpSession::sendNotFound(bool bClose) {
|
||
GET_CONFIG(string, notFound, Http::kNotFound);
|
||
sendResponse(404, bClose, "text/html", KeyValue(), std::make_shared<HttpStringBody>(notFound));
|
||
}
|
||
|
||
void HttpSession::setSocketFlags(){
|
||
GET_CONFIG(int, mergeWriteMS, General::kMergeWriteMS);
|
||
if(mergeWriteMS > 0) {
|
||
//推流模式下，关闭TCP_NODELAY会增加推流端的延时，但是服务器性能将提高
|
||
SockUtil::setNoDelay(getSock()->rawFD(), false);
|
||
//播放模式下，开启MSG_MORE会增加延时，但是能提高发送性能
|
||
setSendFlags(SOCKET_DEFAULE_FLAGS | FLAG_MORE);
|
||
}
|
||
}
|
||
|
||
void HttpSession::onWrite(const Buffer::Ptr &buffer, bool flush) {
|
||
if(flush){
|
||
//需要flush那么一次刷新缓存
|
||
HttpSession::setSendFlushFlag(true);
|
||
}
|
||
|
||
_ticker.resetTime();
|
||
if (!_live_over_websocket) {
|
||
_total_bytes_usage += buffer->size();
|
||
send(buffer);
|
||
} else {
|
||
WebSocketHeader header;
|
||
header._fin = true;
|
||
header._reserved = 0;
|
||
header._opcode = WebSocketHeader::BINARY;
|
||
header._mask_flag = false;
|
||
WebSocketSplitter::encode(header, buffer);
|
||
}
|
||
|
||
if (flush) {
|
||
//本次刷新缓存后，下次不用刷新缓存
|
||
HttpSession::setSendFlushFlag(false);
|
||
}
|
||
}
|
||
|
||
void HttpSession::onWebSocketEncodeData(Buffer::Ptr buffer){
|
||
_total_bytes_usage += buffer->size();
|
||
send(std::move(buffer));
|
||
}
|
||
|
||
void HttpSession::onWebSocketDecodeComplete(const WebSocketHeader &header_in){
|
||
WebSocketHeader& header = const_cast<WebSocketHeader&>(header_in);
|
||
header._mask_flag = false;
|
||
|
||
switch (header._opcode) {
|
||
case WebSocketHeader::CLOSE: {
|
||
encode(header, nullptr);
|
||
shutdown(SockException(Err_shutdown, "recv close request from client"));
|
||
break;
|
||
}
|
||
|
||
default : break;
|
||
}
|
||
}
|
||
|
||
void HttpSession::onDetach() {
|
||
shutdown(SockException(Err_shutdown,"rtmp ring buffer detached"));
|
||
}
|
||
|
||
std::shared_ptr<FlvMuxer> HttpSession::getSharedPtr(){
|
||
return dynamic_pointer_cast<FlvMuxer>(shared_from_this());
|
||
}
|
||
|
||
} /* namespace mediakit */
|