How to prevent a large amount of body content from piling up in the buffer when h2 is sending data?

[zhangqiang-01]

What is the problem your feature solves, or the need it fulfills?

I've noticed that in the write_body function of h2, the data to be sent is simply added to the sending queue. If data sending gets blocked, will it lead to a large amount of data piling up and an inaccurate situation of send_bytes statistics?

[zhangqiang-01]

Should we first use poll_capacity to wait until the buffer is sufficient before send_data?

[eaufavor]

I'm working on a fix as you suggested