[lwip-users] Still a Bug with memory wasting after PPP reconnect?

[Letschi]

Hello!

 

I am using PPP over a serial interface to communicate with a GSM-Modem. This works fine, but I have the following problem: After closing the PPP connection  and reestablishing the connection, my application crashes because pbuf_alloc returns NULL. The number of reconnects the application “survives” depends on the define MEM_SIZE (size of reserved heap memory).   My application only uses one pbuf_malloc-call:

 

Int SendUdpMsg (udp_pcb *pUdpConn, void *pBuff, int nLength )

{

struct pbuf* packet;

                char * data;

                packet=(struct pbuf *)pbuf_alloc(PBUF_TRANSPORT, nLength, PBUF_RAM);

                Assert( packet != NULL );

                data="">

                memcpy(data, pBuff, nLength );

                udp_send(pUdpConn, packet);

                pbuf_free( packet );

                return nLength;

}

 

As you can see I free the allocated memory directly after sending, so I don’t really know who is wasting my mem? Anyone an idea?`

 

Best regards,

Letschi