[lwip-users] TCP transmission error

[boter]

Hi all,

 

    I  writed  a simple TCP-server program base on Rowley webserver demo using lwip.

the server function is that transmit back what it received.  when the function netconn_recv()

is executed the fifth time ,the error will occur . I traced the program . I found the case is the

function netconn_recv() cann't obtain memory for the new incoming data. (the return of

buf = memp_malloc(MEMP_NETBUF) in netconn_recv() function is NULL) . so the server

program cann't receive incoming data again.  I changed MEM_SIZE  from 2000 to 4000 ,but

the result is  same. if anyone need the source code ,please email to me . or anybody send

me your successful program of TCP communication. let me appreciate your experience.

    My email address : address@hidden 

 

Thanks
Boter

29 Dec, 2005