Re: [lwip-users] netbuf_data() netconnwrite() problem

[address@hidden]

Francois Bouchard wrote:
> Ok, I think that the cast is the good thing to do (I got exemple that 
> does that). 
>  
> But that does'nt fix my problem.  The client application sends 10 
> unsigned short, then the server is supposed to send back the 10 u16_t 
> var, but it retransmits half of the data.  The length of the pBuf is 
> 10; but is it 10 octets?  If so that is why I get half of my data back.
>  
> Hope it's not confusing
It is, a little. But with the pbuf length you are right: both p->len and 
p->tot_len are byte counters. When sending 10 ushorts, you have to set 
the size of data to send to the correct amount.

E.g. when sending an array: tcp_write(.., (void*)ushort_array, 
10*sizeof(ushort), ...)

or when executing 10 individual writes: tcp_write(.., (void*)an_ushort, 
sizeof(ushort), ...)

Simon