Re: [lwip-devel] tcp sending balance state

[Kieran Mansley]

On 9 Mar 2012, at 08:26, narke wrote:

> Hi,
> 
> How do I get know a pcb is balanced in sending.  By that, I mean, I
> want to know SND.UNA == SND.NXT.  From the pcb struct, however, I
> don't get how to query these status.    Does the pcb->unsent == NULL
> and pcb->unacked == NULL  do the same job?

There isn't an API to do that.  You can look at the fields in the pcb, but 
there is no guarantee that they will remain the same in future versions.  
unsent==NULL and unacked==NULL means everything has been sent and acknowledged 
(which is I think what you want).  

Kieran