[lwip-users] Raw TCP flow control

[Peter Jolasson]

Hi there,

 

I'm using the "raw api" for TCP communication

 

Normally my "callback_recv" function passes along the payload data to the application and then calls pbuf_free() and tcp_recved().

 

But how should I handle a situation when my application cannot accept the data? (temporary stalled for a few 100 ms)

 

My guess is:

 

Store a pointer to the pbuf and in the "callback_poll" function monitor when/if my application can receive the data and then pass along the data and call pbuf_free() and tcp_recved().

 

 

Is this the correct approach/solution? Do I have to store a list of unused pbufs or can I in some way halt the "callback_recv" function while I'm only interested in the "callback_poll"?

 

/Peter/