rtp服务器单端口模式收到相同ssrc推流时延时关闭RtpSession对象(防止频繁创建销毁对象)

src/Rtp/RtpSelector.h

@@ -44,6 +44,13 @@ public:
     RtpSelector() = default;
     ~RtpSelector() = default;
 
+    class ProcessExisted : public std::runtime_error {
+    public:
+        template<typename ...T>
+        ProcessExisted(T && ...args) : std::runtime_error(std::forward<T>(args)...) {}
+        ~ProcessExisted() override = default;
+    };
+
     static bool getSSRC(const char *data,size_t data_len, uint32_t &ssrc);
     static RtpSelector &Instance();