How to get the size of the outputing reliable packets list

[zhengchengbin610]

Hi , I use this lib to send the media stream in the Embedded device，the device ram is limit, so I want to control the size of outgoing packets , if any method to get this ?? One way I think of is to write a function to get the size of all the packets in the outgoing list. I want if have another good way to do this ? Thanks.