RTC: Extract rtc server in app

trunk/src/app/srs_app_rtc_server.hpp

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+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2013-2020 John
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SRS_APP_RTC_SERVER_HPP
+#define SRS_APP_RTC_SERVER_HPP
+
+#include <srs_core.hpp>
+
+#include <srs_app_listener.hpp>
+#include <srs_app_st.hpp>
+#include <srs_app_reload.hpp>
+#include <srs_app_hourglass.hpp>
+#include <srs_app_hybrid.hpp>
+
+#include <string>
+
+class SrsRtcServer;
+class SrsHourGlass;
+class SrsRtcSession;
+class SrsRequest;
+class SrsSdp;
+
+class SrsUdpMuxSender : virtual public ISrsUdpSender, virtual public ISrsCoroutineHandler, virtual public ISrsReloadHandler
+{
+private:
+    srs_netfd_t lfd;
+    SrsRtcServer* server;
+    SrsCoroutine* trd;
+private:
+    srs_cond_t cond;
+    bool waiting_msgs;
+    bool gso;
+    int nn_senders;
+private:
+    // Hotspot msgs, we are working on it.
+    // @remark We will wait util all messages are ready.
+    std::vector<srs_mmsghdr> hotspot;
+    // Cache msgs, for other coroutines to fill it.
+    std::vector<srs_mmsghdr> cache;
+    int cache_pos;
+    // The max number of messages for sendmmsg. If 1, we use sendmsg to send.
+    int max_sendmmsg;
+    // The total queue length, for each sender.
+    int queue_length;
+    // The extra queue ratio.
+    int extra_ratio;
+    int extra_queue;
+public:
+    SrsUdpMuxSender(SrsRtcServer* s);
+    virtual ~SrsUdpMuxSender();
+public:
+    virtual srs_error_t initialize(srs_netfd_t fd, int senders);
+private:
+    void free_mhdrs(std::vector<srs_mmsghdr>& mhdrs);
+public:
+    virtual srs_error_t fetch(srs_mmsghdr** pphdr);
+    virtual srs_error_t sendmmsg(srs_mmsghdr* hdr);
+    virtual bool overflow();
+    virtual void set_extra_ratio(int r);
+public:
+    virtual srs_error_t cycle();
+// interface ISrsReloadHandler
+public:
+    virtual srs_error_t on_reload_rtc_server();
+};
+
+class SrsRtcServer : virtual public ISrsUdpMuxHandler, virtual public ISrsHourGlass
+{
+private:
+    SrsHourGlass* timer;
+    std::vector<SrsUdpMuxListener*> listeners;
+    std::vector<SrsUdpMuxSender*> senders;
+private:
+    std::map<std::string, SrsRtcSession*> map_username_session; // key: username(local_ufrag + ":" + remote_ufrag)
+    std::map<std::string, SrsRtcSession*> map_id_session; // key: peerip(ip + ":" + port)
+public:
+    SrsRtcServer();
+    virtual ~SrsRtcServer();
+public:
+    virtual srs_error_t initialize();
+public:
+    // TODO: FIXME: Support gracefully quit.
+    // TODO: FIXME: Support reload.
+    srs_error_t listen_udp();
+    virtual srs_error_t on_udp_packet(SrsUdpMuxSocket* skt);
+    srs_error_t listen_api();
+public:
+    // Peer start offering, we answer it.
+    srs_error_t create_session(
+        SrsRequest* req, const SrsSdp& remote_sdp, SrsSdp& local_sdp, const std::string& mock_eip, bool publish,
+        SrsRtcSession** psession
+    );
+    // We start offering, create_session2 to generate offer, setup_session2 to handle answer.
+    srs_error_t create_session2(SrsSdp& local_sdp, SrsRtcSession** psession);
+    srs_error_t setup_session2(SrsRtcSession* session, SrsRequest* req, const SrsSdp& remote_sdp);
+public:
+    bool insert_into_id_sessions(const std::string& peer_id, SrsRtcSession* session);
+    void check_and_clean_timeout_session();
+    int nn_sessions();
+    SrsRtcSession* find_session_by_username(const std::string& ufrag);
+private:
+    SrsRtcSession* find_session_by_peer_id(const std::string& peer_id);
+// interface ISrsHourGlass
+public:
+    virtual srs_error_t notify(int type, srs_utime_t interval, srs_utime_t tick);
+};
+
+// The RTC server adapter.
+class RtcServerAdapter : public ISrsHybridServer
+{
+private:
+    SrsRtcServer* rtc;
+public:
+    RtcServerAdapter();
+    virtual ~RtcServerAdapter();
+public:
+    virtual srs_error_t initialize();
+    virtual srs_error_t run();
+    virtual void stop();
+};
+
+#endif
+