[lwip-users] Allocate a netbuf to send with netconn_write

[markus . forrer]

I want to send a TCP/IP message with netconn_write. Before that I need to 
prepare the data I have to send.

For that reason I want to allocate a netbuf with the maximum block size, 
because I don't know the exact size of the send data. How can I do that? Is 
there an example (allocate netbuf, send, free buffer)?

Thanks a lot for ideas.

Best regards.
Markus