Jrtp的简单应用，以及内存泄漏的问题。_jrtplib内存泄露-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_25359343/article/details/98175966

本文深入探讨了JRTP传输中导致内存泄漏的原因，指出GetNextPacket()与DeletePacket()未配对使用及线程循环不当是关键问题。通过具体代码示例，分析了接收端处理数据包时的常见错误，并提供了修复建议。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

工程发生了内存泄漏，排查许久发现是jrtp传输的问题。在此备份一下，以共勉。

接收端代码段：

int main(void)
{
#ifdef RTP_SOCKETTYPE_WINSOCK
	WSADATA dat;
	WSAStartup(MAKEWORD(2, 2), &dat);
#endif // RTP_SOCKETTYPE_WINSOCK

	RTPSession sess;
	uint16_t portbase;
	int status, i, num;

	cout << "Using version " << RTPLibraryVersion::GetVersion().GetVersionString() << endl;
	cout << "Enter local portbase:" << endl;
	cin >> portbase;
	cout << endl;

	// Now, we'll create a RTP session, set the destination, send some
	// packets and poll for incoming data.

	RTPUDPv4TransmissionParams transparams;
	RTPSessionParams sessparams;

	// IMPORTANT: The local timestamp unit MUST be set, otherwise
	//            RTCP Sender Report info will be calculated wrong
	// In this case, we'll be sending 10 samples each second, so we'll
	// put the timestamp unit to (1.0/10.0)

	sessparams.SetOwnTimestampUnit(1.0 / 10.0);
	sessparams.SetAcceptOwnPackets(true);
	transparams.SetPortbase(portbase);
	status = sess.Create(sessparams, &transparams);

	checkerror(status);

	while (1)
	{
		sess.BeginDataAccess();
		// check incoming packets
		if (sess.GotoFirstSourceWithData())
		{
			do
			{
				RTPPacket *pack;
				while ((pack = sess.GetNextPacket()) != NULL)
				{
					// You can examine the data here
					cout << "Got packet !" << endl;
					cout << pack->GetPayloadData() << endl;
					// we don't longer need the packet, so
					// we'll delete it
					sess.DeletePacket(pack);
				}
			} while (sess.GotoNextSourceWithData());
		}
		sess.EndDataAccess();

#ifndef RTP_SUPPORT_THREAD
		status = sess.Poll();
		checkerror(status);
#endif // RTP_SUPPORT_THREAD

		RTPTime::Wait(RTPTime(1, 0));
	}
	sess.BYEDestroy(RTPTime(10, 0), 0, 0);

#ifdef RTP_SOCKETTYPE_WINSOCK
	WSACleanup();
#endif // RTP_SOCKETTYPE_WINSOCK

	return 0;
}

问题一：
GetNextPacket()和DeletePacket()必须配对使用。
如果只GetNextPacket()而不DeletePacket()，发送端不断地发送数据，接收端就会不断地发生内存泄漏。

问题二：

while (1)
{
	//		sess.BeginDataAccess();
	//		// check incoming packets
	//		if (sess.GotoFirstSourceWithData())
	//		{
	//			do
	//			{
	//				RTPPacket *pack;
	//				while ((pack = sess.GetNextPacket()) != NULL)
	//				{
	//					// You can examine the data here
	//					cout << "Got packet !" << endl;
	//					cout << pack->GetPayloadData() << endl;
	//					// we don't longer need the packet, so
	//					// we'll delete it
	//					sess.DeletePacket(pack);
	//				}
	//			} while (sess.GotoNextSourceWithData());
	//		}
	//		sess.EndDataAccess();
	//
	//#ifndef RTP_SUPPORT_THREAD
	//		status = sess.Poll();
	//		checkerror(status);
	//#endif // RTP_SUPPORT_THREAD
	//
	//		RTPTime::Wait(RTPTime(1, 0));
}

如果将线程里的循环全都注释让线程空跑，当发送端发送数据时，接收端依然会不断地发生内存泄漏。深层原因需要钻研jrtp源码，懒得看了，如果有同胞发现原因。望告知

程序代码：
https://download.youkuaiyun.com/download/qq_25359343/11461800

参考：
https://blog.youkuaiyun.com/wastedsoul/article/details/80581864